boards_base=${wildcard board_*}
-# remove vhci example on anything but linux
-ifneq (${shell uname}, Linux)
-boards=${subst board_usb,,$(boards_base)}
-else
boards=$(boards_base)
-endif
all:
for bi in ${boards}; do $(MAKE) -C $$bi; done
clean:
for bi in ${boards}; do $(MAKE) -C $$bi clean; done
+#
+# The USB example is not made by default, as it downloads stuff
+# for the vhci library, it fails the debian policy on being able
+# to build offline.
+#
+extra_board_usb:
+ make -C extra_board_usb
+++ /dev/null
-simusb_flash.bin
+++ /dev/null
-#
-# Copyright 2012 Torbjorn Tyridal <ttyridal@gmail.com>
-#
-# This file is part of simavr.
-#
-# simavr is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# simavr is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with simavr. If not, see <http://www.gnu.org/licenses/>.
-
-target= simusb
-firm_src = at90usb162_cdc_loopback.c
-firmware = ${firm_src:.c=.hex}
-simavr = ../../
-
-IPATH = .
-IPATH += ../parts
-IPATH += ../vhci/include
-IPATH += ../vhci
-IPATH += ${simavr}/include
-IPATH += ${simavr}/simavr/sim
-#IPATH += /usr/local/include
-
-VPATH = .
-VPATH += ../parts
-
-LDFLAGS += -lpthread -lusb_vhci -L../vhci/lib
-
-all: obj ${firmware} ${target}
-
-include ${simavr}/Makefile.common
-
-board = ${OBJ}/${target}.elf
-
-${board} : ${OBJ}/vhci_usb.o
-${board} : ${OBJ}/${target}.o
-
-../vhci/lib/libusb_vhci.a:
- @echo -n "BUILDIN $@ "
- @{ export CC=;export CFLAGS=; $(MAKE) -j -C ../vhci >/tmp/vhci.build.log 2>&1 || \
- { echo "ERROR check /tmp/vhci.build.log"; exit 1; }; } && \
- echo " Done"
-
-vhci : ../vhci/lib/libusb_vhci.a
-
-clean-vhci:
- $(MAKE) -C ../vhci clean
-
-${target}: vhci ${board}
- @echo $@ done
-
-clean: clean-${OBJ} clean-vhci
- rm -rf *.a *.axf *.hex ${target} *.vcd
+++ /dev/null
-This will bridge the usb avr to the vhci-usb virtual usb host.
-
-You'll need vhci-usb and vhci-usb-lib to build and use it.
-(http://sourceforge.net/projects/usb-vhci/)
-
-When setup, your avr project will connect to the linux usb system
-as a real device.
-
-BUILDING usb-vhci
------------------
-git://usb-vhci.git.sourceforge.net/gitroot/usb-vhci/vhci_hcd
-
-The driver doesn't compile on recent linux kernels.
-(commit 203800f0 Mon Apr 4)
-0001-SPIN_LOCK_UNLOCKED-has-been-depreciated.patch
-and
-0002-need-transaction-translator.patch
-should fix that.
-
-then simply "make && make install"
-
-might need to copy the api header file:
-mkdir -p /usr/local/include/linux
-sudo cp usb-vhci.h /usr/local/include/linux
-
-
-BUILDING libusb_vhci
---------------------
-git://usb-vhci.git.sourceforge.net/gitroot/usb-vhci/libusb_vhci
-
-This was a little more troublesome, but I didn't care to figure it out.
-with libusb_vhci trunk (commit 5927f39a Sun Mar 27)
-
-add
-0001-Comment-out-function-that-doesn-t-compile.patch
-patch to remove that won't compile (and we don't use)
-then:
-cd src
-gcc -c libusb_vhci.c
-ar rcs libusb_vhci.a libusb_vhci.o
-sudo cp libusb_vhci.a /usr/local/lib
-mkdir -p /usr/local/include/linux
-sudo cp libusb_vhci.h /usr/local/include/linux
-
-Gives us what we need
+++ /dev/null
-/* vim: set sts=4:sw=4:ts=4:noexpandtab
- *
- * USB Serial Example for Teensy USB Development Board
- * http://www.pjrc.com/teensy/usb_serial.html
- * Copyright (c) 2008,2010,2011 PJRC.COM, LLC
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-// Version 1.0: Initial Release
-// Version 1.1: support Teensy++
-// Version 1.2: fixed usb_serial_available
-// Version 1.3: added transmit bandwidth test
-// Version 1.4: added usb_serial_write
-// Version 1.5: add support for Teensy 2.0
-// Version 1.6: fix zero length packet bug
-// Version 1.7: fix usb_serial_set_control
-
-#define USB_SERIAL_PRIVATE_INCLUDE
-#include "at90usb162_cdc_loopback.h"
-
-/**************************************************************************
- *
- * Configurable Options
- *
- **************************************************************************/
-
-// You can change these to give your code its own name. On Windows,
-// these are only used before an INF file (driver install) is loaded.
-#define STR_MANUFACTURER L"Your Name"
-#define STR_PRODUCT L"USB Serial"
-
-// All USB serial devices are supposed to have a serial number
-// (according to Microsoft). On windows, a new COM port is created
-// for every unique serial/vendor/product number combination. If
-// you program 2 identical boards with 2 different serial numbers
-// and they are assigned COM7 and COM8, each will always get the
-// same COM port number because Windows remembers serial numbers.
-//
-// On Mac OS-X, a device file is created automatically which
-// incorperates the serial number, eg, /dev/cu-usbmodem12341
-//
-// Linux by default ignores the serial number, and creates device
-// files named /dev/ttyACM0, /dev/ttyACM1... in the order connected.
-// Udev rules (in /etc/udev/rules.d) can define persistent device
-// names linked to this serial number, as well as permissions, owner
-// and group settings.
-#define STR_SERIAL_NUMBER L"12345"
-
-// Mac OS-X and Linux automatically load the correct drivers. On
-// Windows, even though the driver is supplied by Microsoft, an
-// INF file is needed to load the driver. These numbers need to
-// match the INF file.
-#define VENDOR_ID 0x16C0
-#define PRODUCT_ID 0x047A
-
-// When you write data, it goes into a USB endpoint buffer, which
-// is transmitted to the PC when it becomes full, or after a timeout
-// with no more writes. Even if you write in exactly packet-size
-// increments, this timeout is used to send a "zero length packet"
-// that tells the PC no more data is expected and it should pass
-// any buffered data to the application that may be waiting. If
-// you want data sent immediately, call usb_serial_flush_output().
-#define TRANSMIT_FLUSH_TIMEOUT 5 /* in milliseconds */
-
-// If the PC is connected but not "listening", this is the length
-// of time before usb_serial_getchar() returns with an error. This
-// is roughly equivilant to a real UART simply transmitting the
-// bits on a wire where nobody is listening, except you get an error
-// code which you can ignore for serial-like discard of data, or
-// use to know your data wasn't sent.
-#define TRANSMIT_TIMEOUT 25 /* in milliseconds */
-
-// USB devices are supposed to implment a halt feature, which is
-// rarely (if ever) used. If you comment this line out, the halt
-// code will be removed, saving 116 bytes of space (gcc 4.3.0).
-// This is not strictly USB compliant, but works with all major
-// operating systems.
-#define SUPPORT_ENDPOINT_HALT
-
-
-
-/**************************************************************************
- *
- * Endpoint Buffer Configuration
- *
- **************************************************************************/
-
-// These buffer sizes are best for most applications, but perhaps if you
-// want more buffering on some endpoint at the expense of others, this
-// is where you can make such changes. The AT90USB162 has only 176 bytes
-// of DPRAM (USB buffers) and only endpoints 3 & 4 can double buffer.
-
-#define ENDPOINT0_SIZE 16
-#define CDC_ACM_ENDPOINT 2
-#define CDC_RX_ENDPOINT 3
-#define CDC_TX_ENDPOINT 4
-#if defined(__AVR_AT90USB162__)
-#define CDC_ACM_SIZE 16
-#define CDC_ACM_BUFFER EP_SINGLE_BUFFER
-#define CDC_RX_SIZE 32
-#define CDC_RX_BUFFER EP_DOUBLE_BUFFER
-#define CDC_TX_SIZE 32
-#define CDC_TX_BUFFER EP_DOUBLE_BUFFER
-#else
-#define CDC_ACM_SIZE 16
-#define CDC_ACM_BUFFER EP_SINGLE_BUFFER
-#define CDC_RX_SIZE 64
-#define CDC_RX_BUFFER EP_DOUBLE_BUFFER
-#define CDC_TX_SIZE 64
-#define CDC_TX_BUFFER EP_DOUBLE_BUFFER
-#endif
-
-static const uint8_t PROGMEM endpoint_config_table[] = {
- 0,
- 1, EP_TYPE_INTERRUPT_IN, EP_SIZE(CDC_ACM_SIZE) | CDC_ACM_BUFFER,
- 1, EP_TYPE_BULK_OUT, EP_SIZE(CDC_RX_SIZE) | CDC_RX_BUFFER,
- 1, EP_TYPE_BULK_IN, EP_SIZE(CDC_TX_SIZE) | CDC_TX_BUFFER
-};
-
-
-/**************************************************************************
- *
- * Descriptor Data
- *
- **************************************************************************/
-
-// Descriptors are the data that your computer reads when it auto-detects
-// this USB device (called "enumeration" in USB lingo). The most commonly
-// changed items are editable at the top of this file. Changing things
-// in here should only be done by those who've read chapter 9 of the USB
-// spec and relevant portions of any USB class specifications!
-
-static const uint8_t PROGMEM device_descriptor[] = {
- 18, // bLength
- 1, // bDescriptorType
- 0x00, 0x02, // bcdUSB
- 2, // bDeviceClass
- 0, // bDeviceSubClass
- 0, // bDeviceProtocol
- ENDPOINT0_SIZE, // bMaxPacketSize0
- LSB(VENDOR_ID), MSB(VENDOR_ID), // idVendor
- LSB(PRODUCT_ID), MSB(PRODUCT_ID), // idProduct
- 0x00, 0x01, // bcdDevice
- 1, // iManufacturer
- 2, // iProduct
- 3, // iSerialNumber
- 1 // bNumConfigurations
-};
-
-#define CONFIG1_DESC_SIZE (9+9+5+5+4+5+7+9+7+7)
-static const uint8_t PROGMEM config1_descriptor[CONFIG1_DESC_SIZE] = {
- // configuration descriptor, USB spec 9.6.3, page 264-266, Table 9-10
- 9, // bLength;
- 2, // bDescriptorType;
- LSB(CONFIG1_DESC_SIZE), // wTotalLength
- MSB(CONFIG1_DESC_SIZE),
- 2, // bNumInterfaces
- 1, // bConfigurationValue
- 0, // iConfiguration
- 0xC0, // bmAttributes
- 50, // bMaxPower
- // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
- 9, // bLength
- 4, // bDescriptorType
- 0, // bInterfaceNumber
- 0, // bAlternateSetting
- 1, // bNumEndpoints
- 0x02, // bInterfaceClass
- 0x02, // bInterfaceSubClass
- 0x01, // bInterfaceProtocol
- 0, // iInterface
- // CDC Header Functional Descriptor, CDC Spec 5.2.3.1, Table 26
- 5, // bFunctionLength
- 0x24, // bDescriptorType
- 0x00, // bDescriptorSubtype
- 0x10, 0x01, // bcdCDC
- // Call Management Functional Descriptor, CDC Spec 5.2.3.2, Table 27
- 5, // bFunctionLength
- 0x24, // bDescriptorType
- 0x01, // bDescriptorSubtype
- 0x01, // bmCapabilities
- 1, // bDataInterface
- // Abstract Control Management Functional Descriptor, CDC Spec 5.2.3.3, Table 28
- 4, // bFunctionLength
- 0x24, // bDescriptorType
- 0x02, // bDescriptorSubtype
- 0x06, // bmCapabilities
- // Union Functional Descriptor, CDC Spec 5.2.3.8, Table 33
- 5, // bFunctionLength
- 0x24, // bDescriptorType
- 0x06, // bDescriptorSubtype
- 0, // bMasterInterface
- 1, // bSlaveInterface0
- // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
- 7, // bLength
- 5, // bDescriptorType
- CDC_ACM_ENDPOINT | 0x80, // bEndpointAddress
- 0x03, // bmAttributes (0x03=intr)
- CDC_ACM_SIZE, 0, // wMaxPacketSize
- 64, // bInterval
- // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
- 9, // bLength
- 4, // bDescriptorType
- 1, // bInterfaceNumber
- 0, // bAlternateSetting
- 2, // bNumEndpoints
- 0x0A, // bInterfaceClass
- 0x00, // bInterfaceSubClass
- 0x00, // bInterfaceProtocol
- 0, // iInterface
- // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
- 7, // bLength
- 5, // bDescriptorType
- CDC_RX_ENDPOINT, // bEndpointAddress
- 0x02, // bmAttributes (0x02=bulk)
- CDC_RX_SIZE, 0, // wMaxPacketSize
- 0, // bInterval
- // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
- 7, // bLength
- 5, // bDescriptorType
- CDC_TX_ENDPOINT | 0x80, // bEndpointAddress
- 0x02, // bmAttributes (0x02=bulk)
- CDC_TX_SIZE, 0, // wMaxPacketSize
- 0 // bInterval
-};
-
-// If you're desperate for a little extra code memory, these strings
-// can be completely removed if iManufacturer, iProduct, iSerialNumber
-// in the device desciptor are changed to zeros.
-struct usb_string_descriptor_struct {
- uint8_t bLength;
- uint8_t bDescriptorType;
- int16_t wString[];
-};
-static const struct usb_string_descriptor_struct PROGMEM string0 = {
- 4,
- 3,
- {0x0409}
-};
-static const struct usb_string_descriptor_struct PROGMEM string1 = {
- sizeof(STR_MANUFACTURER),
- 3,
- STR_MANUFACTURER
-};
-static const struct usb_string_descriptor_struct PROGMEM string2 = {
- sizeof(STR_PRODUCT),
- 3,
- STR_PRODUCT
-};
-static const struct usb_string_descriptor_struct PROGMEM string3 = {
- sizeof(STR_SERIAL_NUMBER),
- 3,
- STR_SERIAL_NUMBER
-};
-
-// This table defines which descriptor data is sent for each specific
-// request from the host (in wValue and wIndex).
-static const struct descriptor_list_struct {
- uint16_t wValue;
- uint16_t wIndex;
- const uint8_t *addr;
- uint8_t length;
-} PROGMEM descriptor_list[] = {
- {0x0100, 0x0000, device_descriptor, sizeof(device_descriptor)},
- {0x0200, 0x0000, config1_descriptor, sizeof(config1_descriptor)},
- {0x0300, 0x0000, (const uint8_t *)&string0, 4},
- {0x0301, 0x0409, (const uint8_t *)&string1, sizeof(STR_MANUFACTURER)},
- {0x0302, 0x0409, (const uint8_t *)&string2, sizeof(STR_PRODUCT)},
- {0x0303, 0x0409, (const uint8_t *)&string3, sizeof(STR_SERIAL_NUMBER)}
-};
-#define NUM_DESC_LIST (sizeof(descriptor_list)/sizeof(struct descriptor_list_struct))
-
-
-/**************************************************************************
- *
- * Variables - these are the only non-stack RAM usage
- *
- **************************************************************************/
-
-// zero when we are not configured, non-zero when enumerated
-static volatile uint8_t usb_configuration=0;
-
-// the time remaining before we transmit any partially full
-// packet, or send a zero length packet.
-static volatile uint8_t transmit_flush_timer=0;
-static uint8_t transmit_previous_timeout=0;
-
-// serial port settings (baud rate, control signals, etc) set
-// by the PC. These are ignored, but kept in RAM.
-static uint8_t cdc_line_coding[7]={0x00, 0xE1, 0x00, 0x00, 0x00, 0x00, 0x08};
-static uint8_t cdc_line_rtsdtr=0;
-
-
-/**************************************************************************
- *
- * Public Functions - these are the API intended for the user
- *
- **************************************************************************/
-
-// initialize USB serial
-void usb_init(void)
-{
- sei();
- HW_CONFIG();
- USB_FREEZE(); // enable USB
- PLL_CONFIG(); // config PLL, 16 MHz xtal
- while (!(PLLCSR & (1<<PLOCK))) ; // wait for PLL lock
- USB_CONFIG(); // start USB clock
- UDCON = 0; // enable attach resistor
- usb_configuration = 0;
- cdc_line_rtsdtr = 0;
- UDIEN = (1<<EORSTE)|(1<<SOFE);
-}
-
-// return 0 if the USB is not configured, or the configuration
-// number selected by the HOST
-uint8_t usb_configured(void)
-{
- return usb_configuration;
-}
-
-// get the next character, or -1 if nothing received
-int16_t usb_serial_getchar(void)
-{
- uint8_t c, intr_state;
-
- // interrupts are disabled so these functions can be
- // used from the main program or interrupt context,
- // even both in the same program!
- intr_state = SREG;
- cli();
- if (!usb_configuration) {
- SREG = intr_state;
- return -1;
- }
- UENUM = CDC_RX_ENDPOINT;
- retry:
- c = UEINTX;
- if (!(c & (1<<RWAL))) {
- // no data in buffer
- if (c & (1<<RXOUTI)) {
- UEINTX = 0x6B;
- goto retry;
- }
- SREG = intr_state;
- return -1;
- }
- // take one byte out of the buffer
- c = UEDATX;
- // if buffer completely used, release it
- if (!(UEINTX & (1<<RWAL))) UEINTX = 0x6B;
- SREG = intr_state;
- return c;
-}
-
-// number of bytes available in the receive buffer
-uint8_t usb_serial_available(void)
-{
- uint8_t n=0, i, intr_state;
-
- intr_state = SREG;
- cli();
- if (usb_configuration) {
- UENUM = CDC_RX_ENDPOINT;
- n = UEBCLX;
- if (!n) {
- i = UEINTX;
- if (i & (1<<RXOUTI) && !(i & (1<<RWAL))) UEINTX = 0x6B;
- }
- }
- SREG = intr_state;
- return n;
-}
-
-// discard any buffered input
-void usb_serial_flush_input(void)
-{
- uint8_t intr_state;
-
- if (usb_configuration) {
- intr_state = SREG;
- cli();
- UENUM = CDC_RX_ENDPOINT;
- while ((UEINTX & (1<<RWAL))) {
- UEINTX = 0x6B;
- }
- SREG = intr_state;
- }
-}
-
-// transmit a character. 0 returned on success, -1 on error
-int8_t usb_serial_putchar(uint8_t c)
-{
- uint8_t timeout, intr_state;
-
- // if we're not online (enumerated and configured), error
- if (!usb_configuration) return -1;
- // interrupts are disabled so these functions can be
- // used from the main program or interrupt context,
- // even both in the same program!
- intr_state = SREG;
- cli();
- UENUM = CDC_TX_ENDPOINT;
- // if we gave up due to timeout before, don't wait again
- if (transmit_previous_timeout) {
- if (!(UEINTX & (1<<RWAL))) {
- SREG = intr_state;
- return -1;
- }
- transmit_previous_timeout = 0;
- }
- // wait for the FIFO to be ready to accept data
- timeout = UDFNUML + TRANSMIT_TIMEOUT;
- while (1) {
- // are we ready to transmit?
- if (UEINTX & (1<<RWAL)) break;
- SREG = intr_state;
- // have we waited too long? This happens if the user
- // is not running an application that is listening
- if (UDFNUML == timeout) {
- transmit_previous_timeout = 1;
- return -1;
- }
- // has the USB gone offline?
- if (!usb_configuration) return -1;
- // get ready to try checking again
- intr_state = SREG;
- cli();
- UENUM = CDC_TX_ENDPOINT;
- }
- // actually write the byte into the FIFO
- UEDATX = c;
- // if this completed a packet, transmit it now!
- if (!(UEINTX & (1<<RWAL))) UEINTX = 0x3A;
- transmit_flush_timer = TRANSMIT_FLUSH_TIMEOUT;
- SREG = intr_state;
- return 0;
-}
-
-
-// transmit a character, but do not wait if the buffer is full,
-// 0 returned on success, -1 on buffer full or error
-int8_t usb_serial_putchar_nowait(uint8_t c)
-{
- uint8_t intr_state;
-
- if (!usb_configuration) return -1;
- intr_state = SREG;
- cli();
- UENUM = CDC_TX_ENDPOINT;
- if (!(UEINTX & (1<<RWAL))) {
- // buffer is full
- SREG = intr_state;
- return -1;
- }
- // actually write the byte into the FIFO
- UEDATX = c;
- // if this completed a packet, transmit it now!
- if (!(UEINTX & (1<<RWAL))) UEINTX = 0x3A;
- transmit_flush_timer = TRANSMIT_FLUSH_TIMEOUT;
- SREG = intr_state;
- return 0;
-}
-
-// transmit a buffer.
-// 0 returned on success, -1 on error
-// This function is optimized for speed! Each call takes approx 6.1 us overhead
-// plus 0.25 us per byte. 12 Mbit/sec USB has 8.67 us per-packet overhead and
-// takes 0.67 us per byte. If called with 64 byte packet-size blocks, this function
-// can transmit at full USB speed using 43% CPU time. The maximum theoretical speed
-// is 19 packets per USB frame, or 1216 kbytes/sec. However, bulk endpoints have the
-// lowest priority, so any other USB devices will likely reduce the speed. Speed
-// can also be limited by how quickly the PC-based software reads data, as the host
-// controller in the PC will not allocate bandwitdh without a pending read request.
-// (thanks to Victor Suarez for testing and feedback and initial code)
-
-int8_t usb_serial_write(const uint8_t *buffer, uint16_t size)
-{
- uint8_t timeout, intr_state, write_size;
-
- // if we're not online (enumerated and configured), error
- if (!usb_configuration) return -1;
- // interrupts are disabled so these functions can be
- // used from the main program or interrupt context,
- // even both in the same program!
- intr_state = SREG;
- cli();
- UENUM = CDC_TX_ENDPOINT;
- // if we gave up due to timeout before, don't wait again
- if (transmit_previous_timeout) {
- if (!(UEINTX & (1<<RWAL))) {
- SREG = intr_state;
- return -1;
- }
- transmit_previous_timeout = 0;
- }
- // each iteration of this loop transmits a packet
- while (size) {
- // wait for the FIFO to be ready to accept data
- timeout = UDFNUML + TRANSMIT_TIMEOUT;
- while (1) {
- // are we ready to transmit?
- if (UEINTX & (1<<RWAL)) break;
- SREG = intr_state;
- // have we waited too long? This happens if the user
- // is not running an application that is listening
- if (UDFNUML == timeout) {
- transmit_previous_timeout = 1;
- return -1;
- }
- // has the USB gone offline?
- if (!usb_configuration) return -1;
- // get ready to try checking again
- intr_state = SREG;
- cli();
- UENUM = CDC_TX_ENDPOINT;
- }
-
- // compute how many bytes will fit into the next packet
- write_size = CDC_TX_SIZE - UEBCLX;
- if (write_size > size) write_size = size;
- size -= write_size;
-
- // write the packet
- switch (write_size) {
- #if (CDC_TX_SIZE == 64)
- case 64: UEDATX = *buffer++;
- case 63: UEDATX = *buffer++;
- case 62: UEDATX = *buffer++;
- case 61: UEDATX = *buffer++;
- case 60: UEDATX = *buffer++;
- case 59: UEDATX = *buffer++;
- case 58: UEDATX = *buffer++;
- case 57: UEDATX = *buffer++;
- case 56: UEDATX = *buffer++;
- case 55: UEDATX = *buffer++;
- case 54: UEDATX = *buffer++;
- case 53: UEDATX = *buffer++;
- case 52: UEDATX = *buffer++;
- case 51: UEDATX = *buffer++;
- case 50: UEDATX = *buffer++;
- case 49: UEDATX = *buffer++;
- case 48: UEDATX = *buffer++;
- case 47: UEDATX = *buffer++;
- case 46: UEDATX = *buffer++;
- case 45: UEDATX = *buffer++;
- case 44: UEDATX = *buffer++;
- case 43: UEDATX = *buffer++;
- case 42: UEDATX = *buffer++;
- case 41: UEDATX = *buffer++;
- case 40: UEDATX = *buffer++;
- case 39: UEDATX = *buffer++;
- case 38: UEDATX = *buffer++;
- case 37: UEDATX = *buffer++;
- case 36: UEDATX = *buffer++;
- case 35: UEDATX = *buffer++;
- case 34: UEDATX = *buffer++;
- case 33: UEDATX = *buffer++;
- #endif
- #if (CDC_TX_SIZE >= 32)
- case 32: UEDATX = *buffer++;
- case 31: UEDATX = *buffer++;
- case 30: UEDATX = *buffer++;
- case 29: UEDATX = *buffer++;
- case 28: UEDATX = *buffer++;
- case 27: UEDATX = *buffer++;
- case 26: UEDATX = *buffer++;
- case 25: UEDATX = *buffer++;
- case 24: UEDATX = *buffer++;
- case 23: UEDATX = *buffer++;
- case 22: UEDATX = *buffer++;
- case 21: UEDATX = *buffer++;
- case 20: UEDATX = *buffer++;
- case 19: UEDATX = *buffer++;
- case 18: UEDATX = *buffer++;
- case 17: UEDATX = *buffer++;
- #endif
- #if (CDC_TX_SIZE >= 16)
- case 16: UEDATX = *buffer++;
- case 15: UEDATX = *buffer++;
- case 14: UEDATX = *buffer++;
- case 13: UEDATX = *buffer++;
- case 12: UEDATX = *buffer++;
- case 11: UEDATX = *buffer++;
- case 10: UEDATX = *buffer++;
- case 9: UEDATX = *buffer++;
- #endif
- case 8: UEDATX = *buffer++;
- case 7: UEDATX = *buffer++;
- case 6: UEDATX = *buffer++;
- case 5: UEDATX = *buffer++;
- case 4: UEDATX = *buffer++;
- case 3: UEDATX = *buffer++;
- case 2: UEDATX = *buffer++;
- default:
- case 1: UEDATX = *buffer++;
- case 0: break;
- }
- // if this completed a packet, transmit it now!
- if (!(UEINTX & (1<<RWAL))) UEINTX = 0x3A;
- transmit_flush_timer = TRANSMIT_FLUSH_TIMEOUT;
- SREG = intr_state;
- }
- return 0;
-}
-
-
-// immediately transmit any buffered output.
-// This doesn't actually transmit the data - that is impossible!
-// USB devices only transmit when the host allows, so the best
-// we can do is release the FIFO buffer for when the host wants it
-void usb_serial_flush_output(void)
-{
- uint8_t intr_state;
-
- intr_state = SREG;
- cli();
- if (transmit_flush_timer) {
- UENUM = CDC_TX_ENDPOINT;
- UEINTX = 0x3A;
- transmit_flush_timer = 0;
- }
- SREG = intr_state;
-}
-
-// functions to read the various async serial settings. These
-// aren't actually used by USB at all (communication is always
-// at full USB speed), but they are set by the host so we can
-// set them properly if we're converting the USB to a real serial
-// communication
-// uint32_t usb_serial_get_baud(void)
-// {
-// return *(uint32_t *)cdc_line_coding;
-// }
-uint8_t usb_serial_get_stopbits(void)
-{
- return cdc_line_coding[4];
-}
-uint8_t usb_serial_get_paritytype(void)
-{
- return cdc_line_coding[5];
-}
-uint8_t usb_serial_get_numbits(void)
-{
- return cdc_line_coding[6];
-}
-uint8_t usb_serial_get_control(void)
-{
- return cdc_line_rtsdtr;
-}
-// write the control signals, DCD, DSR, RI, etc
-// There is no CTS signal. If software on the host has transmitted
-// data to you but you haven't been calling the getchar function,
-// it remains buffered (either here or on the host) and can not be
-// lost because you weren't listening at the right time, like it
-// would in real serial communication.
-int8_t usb_serial_set_control(uint8_t signals)
-{
- uint8_t intr_state;
-
- intr_state = SREG;
- cli();
- if (!usb_configuration) {
- // we're not enumerated/configured
- SREG = intr_state;
- return -1;
- }
-
- UENUM = CDC_ACM_ENDPOINT;
- if (!(UEINTX & (1<<RWAL))) {
- // unable to write
- // TODO; should this try to abort the previously
- // buffered message??
- SREG = intr_state;
- return -1;
- }
- UEDATX = 0xA1;
- UEDATX = 0x20;
- UEDATX = 0;
- UEDATX = 0;
- UEDATX = 0; // 0 seems to work nicely. what if this is 1??
- UEDATX = 0;
- UEDATX = 1;
- UEDATX = 0;
- UEDATX = signals;
- UEINTX = 0x3A;
- SREG = intr_state;
- return 0;
-}
-
-
-
-/**************************************************************************
- *
- * Private Functions - not intended for general user consumption....
- *
- **************************************************************************/
-
-
-// USB Device Interrupt - handle all device-level events
-// the transmit buffer flushing is triggered by the start of frame
-//
-ISR(USB_GEN_vect, ISR_BLOCK)
-{
- uint8_t intbits, t;
- intbits = UDINT;
- UDINT = 0;
- if (intbits & (1<<EORSTI)) {
- UENUM = 0;
- UECONX = 1;
- UECFG0X = EP_TYPE_CONTROL;
- UECFG1X = EP_SIZE(ENDPOINT0_SIZE) | EP_SINGLE_BUFFER;
- UEIENX = (1<<RXSTPE);
- usb_configuration = 0;
- cdc_line_rtsdtr = 0;
- }
- if (intbits & (1<<SOFI)) {
- if (usb_configuration) {
- t = transmit_flush_timer;
- if (t) {
- transmit_flush_timer = --t;
- if (!t) {
- UENUM = CDC_TX_ENDPOINT;
- UEINTX = 0x3A;
- }
- }
- }
- }
-}
-
-
-// Misc functions to wait for ready and send/receive packets
-static inline void usb_wait_in_ready(void)
-{
- while (!(UEINTX & (1<<TXINI))) ;
-}
-static inline void usb_send_in(void)
-{
- UEINTX = ~(1<<TXINI);
-}
-static inline void usb_wait_receive_out(void)
-{
- while (!(UEINTX & (1<<RXOUTI))) ;
-}
-static inline void usb_ack_out(void)
-{
- UEINTX = ~(1<<RXOUTI);
-}
-
-
-
-// USB Endpoint Interrupt - endpoint 0 is handled here. The
-// other endpoints are manipulated by the user-callable
-// functions, and the start-of-frame interrupt.
-//
-ISR(USB_COM_vect, ISR_BLOCK)
-{
- uint8_t intbits;
- const uint8_t *list;
- const uint8_t *cfg;
- uint8_t i, n, len, en;
- uint8_t *p;
- uint8_t bmRequestType;
- uint8_t bRequest;
- uint16_t wValue;
- uint16_t wIndex;
- uint16_t wLength;
- uint16_t desc_val;
- const uint8_t *desc_addr;
- uint8_t desc_length;
-
- UENUM = 0;
- intbits = UEINTX;
- if (intbits & (1<<RXSTPI)) {
- bmRequestType = UEDATX;
- bRequest = UEDATX;
- wValue = UEDATX;
- wValue |= (UEDATX << 8);
- wIndex = UEDATX;
- wIndex |= (UEDATX << 8);
- wLength = UEDATX;
- wLength |= (UEDATX << 8);
- UEINTX = ~((1<<RXSTPI) | (1<<RXOUTI) | (1<<TXINI));
- if (bRequest == GET_DESCRIPTOR) {
- list = (const uint8_t *)descriptor_list;
- for (i=0; ; i++) {
- if (i >= NUM_DESC_LIST) {
- UECONX = (1<<STALLRQ)|(1<<EPEN); //stall
- return;
- }
- desc_val = pgm_read_word(list);
- if (desc_val != wValue) {
- list += sizeof(struct descriptor_list_struct);
- continue;
- }
- list += 2;
- desc_val = pgm_read_word(list);
- if (desc_val != wIndex) {
- list += sizeof(struct descriptor_list_struct)-2;
- continue;
- }
- list += 2;
- desc_addr = (const uint8_t *)pgm_read_word(list);
- list += 2;
- desc_length = pgm_read_byte(list);
- break;
- }
- len = (wLength < 256) ? wLength : 255;
- if (len > desc_length) len = desc_length;
- do {
- // wait for host ready for IN packet
- do {
- i = UEINTX;
- } while (!(i & ((1<<TXINI)|(1<<RXOUTI))));
- if (i & (1<<RXOUTI))
- {
- return; // abort
- }
- // send IN packet
- n = len < ENDPOINT0_SIZE ? len : ENDPOINT0_SIZE;
- for (i = n; i; i--) {
- UEDATX = pgm_read_byte(desc_addr++);
- }
- len -= n;
- usb_send_in();
- } while (len || n == ENDPOINT0_SIZE);
- return;
- }
- if (bRequest == SET_ADDRESS) {
- usb_send_in();
- usb_wait_in_ready();
- UDADDR = wValue | (1<<ADDEN);
- return;
- }
- if (bRequest == SET_CONFIGURATION && bmRequestType == 0) {
- usb_configuration = wValue;
- cdc_line_rtsdtr = 0;
- transmit_flush_timer = 0;
- usb_send_in();
- cfg = endpoint_config_table;
- for (i=1; i<5; i++) {
- UENUM = i;
- en = pgm_read_byte(cfg++);
- UECONX = en;
- if (en) {
- UECFG0X = pgm_read_byte(cfg++);
- UECFG1X = pgm_read_byte(cfg++);
- }
- }
- UERST = 0x1E;
- UERST = 0;
- return;
- }
- if (bRequest == GET_CONFIGURATION && bmRequestType == 0x80) {
- usb_wait_in_ready();
- UEDATX = usb_configuration;
- usb_send_in();
- return;
- }
- if (bRequest == CDC_GET_LINE_CODING && bmRequestType == 0xA1) {
- usb_wait_in_ready();
- p = cdc_line_coding;
- for (i=0; i<7; i++) {
- UEDATX = *p++;
- }
- usb_send_in();
- return;
- }
- if (bRequest == CDC_SET_LINE_CODING && bmRequestType == 0x21) {
- usb_wait_receive_out();
- p = cdc_line_coding;
- for (i=0; i<7; i++) {
- *p++ = UEDATX;
- }
- usb_ack_out();
- usb_send_in();
- return;
- }
- if (bRequest == CDC_SET_CONTROL_LINE_STATE && bmRequestType == 0x21) {
- cdc_line_rtsdtr = wValue;
- usb_wait_in_ready();
- usb_send_in();
- return;
- }
- if (bRequest == GET_STATUS) {
- usb_wait_in_ready();
- i = 0;
- #ifdef SUPPORT_ENDPOINT_HALT
- if (bmRequestType == 0x82) {
- UENUM = wIndex;
- if (UECONX & (1<<STALLRQ)) i = 1;
- UENUM = 0;
- }
- #endif
- UEDATX = i;
- UEDATX = 0;
- usb_send_in();
- return;
- }
- #ifdef SUPPORT_ENDPOINT_HALT
- if ((bRequest == CLEAR_FEATURE || bRequest == SET_FEATURE)
- && bmRequestType == 0x02 && wValue == 0) {
- i = wIndex & 0x7F;
- if (i >= 1 && i <= MAX_ENDPOINT) {
- usb_send_in();
- UENUM = i;
- if (bRequest == SET_FEATURE) {
- UECONX = (1<<STALLRQ)|(1<<EPEN);
- } else {
- UECONX = (1<<STALLRQC)|(1<<RSTDT)|(1<<EPEN);
- UERST = (1 << i);
- UERST = 0;
- }
- return;
- }
- }
- #endif
- }
- UECONX = (1<<STALLRQ) | (1<<EPEN); // stall
-}
-
-
-#define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
-
-#if 0
-#include <stdio.h>
-static int dw_putchar(char __c, FILE *__stream) { DWDR = __c;(void)__stream; return __c;}
-FILE dwout = FDEV_SETUP_STREAM(dw_putchar, NULL, _FDEV_SETUP_WRITE);
-stdout=&dwout;
-#endif
-
-// Very simple character echo test
-int main(void)
-{
- CPU_PRESCALE(0);
- usb_init();
- while(usb_configured()==0);
- while (1) {
- int n = usb_serial_getchar();
- if (n >= 0) usb_serial_putchar(n);
- }
-}
+++ /dev/null
-/* vim: set sts=4:sw=4:ts=4:noexpandtab */
-#ifndef usb_serial_h__
-#define usb_serial_h__
-
-#include <stdint.h>
-
-// setup
-void usb_init(void); // initialize everything
-uint8_t usb_configured(void); // is the USB port configured
-
-// receiving data
-int16_t usb_serial_getchar(void); // receive a character (-1 if timeout/error)
-uint8_t usb_serial_available(void); // number of bytes in receive buffer
-void usb_serial_flush_input(void); // discard any buffered input
-
-// transmitting data
-int8_t usb_serial_putchar(uint8_t c); // transmit a character
-int8_t usb_serial_putchar_nowait(uint8_t c); // transmit a character, do not wait
-int8_t usb_serial_write(const uint8_t *buffer, uint16_t size); // transmit a buffer
-void usb_serial_flush_output(void); // immediately transmit any buffered output
-
-// serial parameters
-uint32_t usb_serial_get_baud(void); // get the baud rate
-uint8_t usb_serial_get_stopbits(void); // get the number of stop bits
-uint8_t usb_serial_get_paritytype(void);// get the parity type
-uint8_t usb_serial_get_numbits(void); // get the number of data bits
-uint8_t usb_serial_get_control(void); // get the RTS and DTR signal state
-int8_t usb_serial_set_control(uint8_t signals); // set DSR, DCD, RI, etc
-
-// constants corresponding to the various serial parameters
-#define USB_SERIAL_DTR 0x01
-#define USB_SERIAL_RTS 0x02
-#define USB_SERIAL_1_STOP 0
-#define USB_SERIAL_1_5_STOP 1
-#define USB_SERIAL_2_STOP 2
-#define USB_SERIAL_PARITY_NONE 0
-#define USB_SERIAL_PARITY_ODD 1
-#define USB_SERIAL_PARITY_EVEN 2
-#define USB_SERIAL_PARITY_MARK 3
-#define USB_SERIAL_PARITY_SPACE 4
-#define USB_SERIAL_DCD 0x01
-#define USB_SERIAL_DSR 0x02
-#define USB_SERIAL_BREAK 0x04
-#define USB_SERIAL_RI 0x08
-#define USB_SERIAL_FRAME_ERR 0x10
-#define USB_SERIAL_PARITY_ERR 0x20
-#define USB_SERIAL_OVERRUN_ERR 0x40
-
-// This file does not include the HID debug functions, so these empty
-// macros replace them with nothing, so users can compile code that
-// has calls to these functions.
-#define usb_debug_putchar(c)
-#define usb_debug_flush_output()
-
-
-
-// Everything below this point is only intended for usb_serial.c
-#ifdef USB_SERIAL_PRIVATE_INCLUDE
-#include <avr/io.h>
-#include <avr/pgmspace.h>
-#include <avr/interrupt.h>
-
-#define EP_TYPE_CONTROL 0x00
-#define EP_TYPE_BULK_IN 0x81
-#define EP_TYPE_BULK_OUT 0x80
-#define EP_TYPE_INTERRUPT_IN 0xC1
-#define EP_TYPE_INTERRUPT_OUT 0xC0
-#define EP_TYPE_ISOCHRONOUS_IN 0x41
-#define EP_TYPE_ISOCHRONOUS_OUT 0x40
-#define EP_SINGLE_BUFFER 0x02
-#define EP_DOUBLE_BUFFER 0x06
-#define EP_SIZE(s) ((s) == 64 ? 0x30 : \
- ((s) == 32 ? 0x20 : \
- ((s) == 16 ? 0x10 : \
- 0x00)))
-
-#define MAX_ENDPOINT 4
-
-#define LSB(n) (n & 255)
-#define MSB(n) ((n >> 8) & 255)
-
-#if defined(__AVR_AT90USB162__)
-#define HW_CONFIG()
-#define PLL_CONFIG() (PLLCSR = ((1<<PLLE)|(1<<PLLP0)))
-#define USB_CONFIG() (USBCON = (1<<USBE))
-#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
-#elif defined(__AVR_ATmega32U4__)
-#define HW_CONFIG() (UHWCON = 0x01)
-#define PLL_CONFIG() (PLLCSR = 0x12)
-#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
-#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
-#elif defined(__AVR_AT90USB646__)
-#define HW_CONFIG() (UHWCON = 0x81)
-#define PLL_CONFIG() (PLLCSR = 0x1A)
-#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
-#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
-#elif defined(__AVR_AT90USB1286__)
-#define HW_CONFIG() (UHWCON = 0x81)
-#define PLL_CONFIG() (PLLCSR = 0x16)
-#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
-#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
-#endif
-
-// standard control endpoint request types
-#define GET_STATUS 0
-#define CLEAR_FEATURE 1
-#define SET_FEATURE 3
-#define SET_ADDRESS 5
-#define GET_DESCRIPTOR 6
-#define GET_CONFIGURATION 8
-#define SET_CONFIGURATION 9
-#define GET_INTERFACE 10
-#define SET_INTERFACE 11
-// HID (human interface device)
-#define HID_GET_REPORT 1
-#define HID_GET_PROTOCOL 3
-#define HID_SET_REPORT 9
-#define HID_SET_IDLE 10
-#define HID_SET_PROTOCOL 11
-// CDC (communication class device)
-#define CDC_SET_LINE_CODING 0x20
-#define CDC_GET_LINE_CODING 0x21
-#define CDC_SET_CONTROL_LINE_STATE 0x22
-#endif
-#endif
+++ /dev/null
-/* vim: set sts=4:sw=4:ts=4:noexpandtab
- simusb.c
-
- Copyright 2012 Torbjorn Tyridal <ttyridal@gmail.com>
-
- This file is part of simavr.
-
- simavr is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- simavr is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with simavr. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <sys/mman.h>
-#include <unistd.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <libgen.h>
-
-#include <pthread.h>
-
-#include "sim_avr.h"
-#include "avr_ioport.h"
-#include "sim_elf.h"
-#include "sim_hex.h"
-#include "sim_gdb.h"
-#include "vhci_usb.h"
-#include "sim_vcd_file.h"
-
-struct vhci_usb_t vhci_usb;
-avr_t * avr = NULL;
-avr_vcd_t vcd_file;
-
-
-
-char avr_flash_path[1024];
-int avr_flash_fd = 0;
-
-// avr special flash initalization
-// here: open and map a file to enable a persistent storage for the flash memory
-void avr_special_init( avr_t* avr)
-{
- //puts(" --=== INIT CALLED ===--");
- // release flash memory if allocated
- if(avr->flash) free(avr->flash);
- // open the file
- avr_flash_fd = open(avr_flash_path, O_RDWR|O_CREAT, 0644);
- if (avr_flash_fd < 0) {
- perror(avr_flash_path);
- exit(1);
- }
- // resize and map the file the file
- (void)ftruncate(avr_flash_fd, avr->flashend + 1);
- avr->flash = (uint8_t*)mmap(NULL, avr->flashend + 1, // 32k is multiple of 4096
- PROT_READ|PROT_WRITE, MAP_SHARED, avr_flash_fd, 0);
- if (!avr->flash) {
- fprintf(stderr, "unable to map memory\n");
- perror(avr_flash_path);
- exit(1);
- }
-}
-
-// avr special flash deinitalization
-// here: cleanup the persistent storage
-void avr_special_deinit( avr_t* avr)
-{
- //puts(" --=== DEINIT CALLED ===--");
- // unmap and close the file
- munmap( avr->flash, avr->flashend + 1);
- close( avr_flash_fd);
- // signal that cleanup is done
- avr->flash = NULL;
-}
-
-int main(int argc, char *argv[])
-{
-// elf_firmware_t f;
- const char * pwd = dirname(argv[0]);
-
- avr = avr_make_mcu_by_name("at90usb162");
- if (!avr) {
- fprintf(stderr, "%s: Error creating the AVR core\n", argv[0]);
- exit(1);
- }
- strcpy(avr_flash_path, "simusb_flash.bin");
- // register our own functions
- avr->special_init = avr_special_init;
- avr->special_deinit = avr_special_deinit;
- //avr->reset = NULL;
- avr_init(avr);
- avr->frequency = 8000000;
-
- // this trick creates a file that contains /and keep/ the flash
- // in the same state as it was before. This allow the bootloader
- // app to be kept, and re-run if the bootloader doesn't get a
- // new one
- {
- char path[1024];
- uint32_t base, size;
- snprintf(path, sizeof(path), "%s/../%s", pwd, "at90usb162_cdc_loopback.hex");
-
- uint8_t * boot = read_ihex_file(path, &size, &base);
- if (!boot) {
- fprintf(stderr, "%s: Unable to load %s\n", argv[0], path);
- exit(1);
- }
- printf("Booloader %04x: %d\n", base, size);
- memcpy(avr->flash + base, boot, size);
- free(boot);
- avr->pc = base;
- avr->codeend = avr->flashend;
- }
-
- // even if not setup at startup, activate gdb if crashing
- avr->gdb_port = 1234;
- if (0) {
- //avr->state = cpu_Stopped;
- avr_gdb_init(avr);
- }
-
- vhci_usb_init(avr, &vhci_usb);
- vhci_usb_connect(&vhci_usb, '0');
-
-
- while (1) {
- avr_run(avr);
- }
-}
--- /dev/null
+simusb_flash.bin
--- /dev/null
+#
+# Copyright 2012 Torbjorn Tyridal <ttyridal@gmail.com>
+#
+# This file is part of simavr.
+#
+# simavr is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# simavr is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with simavr. If not, see <http://www.gnu.org/licenses/>.
+
+target= simusb
+firm_src = at90usb162_cdc_loopback.c
+firmware = ${firm_src:.c=.hex}
+simavr = ../../
+
+IPATH = .
+IPATH += ../parts
+IPATH += ../vhci/include
+IPATH += ../vhci
+IPATH += ${simavr}/include
+IPATH += ${simavr}/simavr/sim
+#IPATH += /usr/local/include
+
+VPATH = .
+VPATH += ../parts
+
+LDFLAGS += -lpthread -lusb_vhci -L../vhci/lib
+
+all: obj ${firmware} ${target}
+
+include ${simavr}/Makefile.common
+
+board = ${OBJ}/${target}.elf
+
+${board} : ${OBJ}/vhci_usb.o
+${board} : ${OBJ}/${target}.o
+
+../vhci/lib/libusb_vhci.a:
+ @echo -n "BUILDIN $@ "
+ @{ export CC=;export CFLAGS=; $(MAKE) -j -C ../vhci >/tmp/vhci.build.log 2>&1 || \
+ { echo "ERROR check /tmp/vhci.build.log"; exit 1; }; } && \
+ echo " Done"
+
+vhci : ../vhci/lib/libusb_vhci.a
+
+clean-vhci:
+ $(MAKE) -C ../vhci clean
+
+${target}: vhci ${board}
+ @echo $@ done
+
+clean: clean-${OBJ} clean-vhci
+ rm -rf *.a *.axf *.hex ${target} *.vcd
--- /dev/null
+This will bridge the usb avr to the vhci-usb virtual usb host.
+
+You'll need vhci-usb and vhci-usb-lib to build and use it.
+(http://sourceforge.net/projects/usb-vhci/)
+
+When setup, your avr project will connect to the linux usb system
+as a real device.
+
+BUILDING usb-vhci
+-----------------
+git://usb-vhci.git.sourceforge.net/gitroot/usb-vhci/vhci_hcd
+
+The driver doesn't compile on recent linux kernels.
+(commit 203800f0 Mon Apr 4)
+0001-SPIN_LOCK_UNLOCKED-has-been-depreciated.patch
+and
+0002-need-transaction-translator.patch
+should fix that.
+
+then simply "make && make install"
+
+might need to copy the api header file:
+mkdir -p /usr/local/include/linux
+sudo cp usb-vhci.h /usr/local/include/linux
+
+
+BUILDING libusb_vhci
+--------------------
+git://usb-vhci.git.sourceforge.net/gitroot/usb-vhci/libusb_vhci
+
+This was a little more troublesome, but I didn't care to figure it out.
+with libusb_vhci trunk (commit 5927f39a Sun Mar 27)
+
+add
+0001-Comment-out-function-that-doesn-t-compile.patch
+patch to remove that won't compile (and we don't use)
+then:
+cd src
+gcc -c libusb_vhci.c
+ar rcs libusb_vhci.a libusb_vhci.o
+sudo cp libusb_vhci.a /usr/local/lib
+mkdir -p /usr/local/include/linux
+sudo cp libusb_vhci.h /usr/local/include/linux
+
+Gives us what we need
--- /dev/null
+/* vim: set sts=4:sw=4:ts=4:noexpandtab
+ *
+ * USB Serial Example for Teensy USB Development Board
+ * http://www.pjrc.com/teensy/usb_serial.html
+ * Copyright (c) 2008,2010,2011 PJRC.COM, LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+// Version 1.0: Initial Release
+// Version 1.1: support Teensy++
+// Version 1.2: fixed usb_serial_available
+// Version 1.3: added transmit bandwidth test
+// Version 1.4: added usb_serial_write
+// Version 1.5: add support for Teensy 2.0
+// Version 1.6: fix zero length packet bug
+// Version 1.7: fix usb_serial_set_control
+
+#define USB_SERIAL_PRIVATE_INCLUDE
+#include "at90usb162_cdc_loopback.h"
+
+/**************************************************************************
+ *
+ * Configurable Options
+ *
+ **************************************************************************/
+
+// You can change these to give your code its own name. On Windows,
+// these are only used before an INF file (driver install) is loaded.
+#define STR_MANUFACTURER L"Your Name"
+#define STR_PRODUCT L"USB Serial"
+
+// All USB serial devices are supposed to have a serial number
+// (according to Microsoft). On windows, a new COM port is created
+// for every unique serial/vendor/product number combination. If
+// you program 2 identical boards with 2 different serial numbers
+// and they are assigned COM7 and COM8, each will always get the
+// same COM port number because Windows remembers serial numbers.
+//
+// On Mac OS-X, a device file is created automatically which
+// incorperates the serial number, eg, /dev/cu-usbmodem12341
+//
+// Linux by default ignores the serial number, and creates device
+// files named /dev/ttyACM0, /dev/ttyACM1... in the order connected.
+// Udev rules (in /etc/udev/rules.d) can define persistent device
+// names linked to this serial number, as well as permissions, owner
+// and group settings.
+#define STR_SERIAL_NUMBER L"12345"
+
+// Mac OS-X and Linux automatically load the correct drivers. On
+// Windows, even though the driver is supplied by Microsoft, an
+// INF file is needed to load the driver. These numbers need to
+// match the INF file.
+#define VENDOR_ID 0x16C0
+#define PRODUCT_ID 0x047A
+
+// When you write data, it goes into a USB endpoint buffer, which
+// is transmitted to the PC when it becomes full, or after a timeout
+// with no more writes. Even if you write in exactly packet-size
+// increments, this timeout is used to send a "zero length packet"
+// that tells the PC no more data is expected and it should pass
+// any buffered data to the application that may be waiting. If
+// you want data sent immediately, call usb_serial_flush_output().
+#define TRANSMIT_FLUSH_TIMEOUT 5 /* in milliseconds */
+
+// If the PC is connected but not "listening", this is the length
+// of time before usb_serial_getchar() returns with an error. This
+// is roughly equivilant to a real UART simply transmitting the
+// bits on a wire where nobody is listening, except you get an error
+// code which you can ignore for serial-like discard of data, or
+// use to know your data wasn't sent.
+#define TRANSMIT_TIMEOUT 25 /* in milliseconds */
+
+// USB devices are supposed to implment a halt feature, which is
+// rarely (if ever) used. If you comment this line out, the halt
+// code will be removed, saving 116 bytes of space (gcc 4.3.0).
+// This is not strictly USB compliant, but works with all major
+// operating systems.
+#define SUPPORT_ENDPOINT_HALT
+
+
+
+/**************************************************************************
+ *
+ * Endpoint Buffer Configuration
+ *
+ **************************************************************************/
+
+// These buffer sizes are best for most applications, but perhaps if you
+// want more buffering on some endpoint at the expense of others, this
+// is where you can make such changes. The AT90USB162 has only 176 bytes
+// of DPRAM (USB buffers) and only endpoints 3 & 4 can double buffer.
+
+#define ENDPOINT0_SIZE 16
+#define CDC_ACM_ENDPOINT 2
+#define CDC_RX_ENDPOINT 3
+#define CDC_TX_ENDPOINT 4
+#if defined(__AVR_AT90USB162__)
+#define CDC_ACM_SIZE 16
+#define CDC_ACM_BUFFER EP_SINGLE_BUFFER
+#define CDC_RX_SIZE 32
+#define CDC_RX_BUFFER EP_DOUBLE_BUFFER
+#define CDC_TX_SIZE 32
+#define CDC_TX_BUFFER EP_DOUBLE_BUFFER
+#else
+#define CDC_ACM_SIZE 16
+#define CDC_ACM_BUFFER EP_SINGLE_BUFFER
+#define CDC_RX_SIZE 64
+#define CDC_RX_BUFFER EP_DOUBLE_BUFFER
+#define CDC_TX_SIZE 64
+#define CDC_TX_BUFFER EP_DOUBLE_BUFFER
+#endif
+
+static const uint8_t PROGMEM endpoint_config_table[] = {
+ 0,
+ 1, EP_TYPE_INTERRUPT_IN, EP_SIZE(CDC_ACM_SIZE) | CDC_ACM_BUFFER,
+ 1, EP_TYPE_BULK_OUT, EP_SIZE(CDC_RX_SIZE) | CDC_RX_BUFFER,
+ 1, EP_TYPE_BULK_IN, EP_SIZE(CDC_TX_SIZE) | CDC_TX_BUFFER
+};
+
+
+/**************************************************************************
+ *
+ * Descriptor Data
+ *
+ **************************************************************************/
+
+// Descriptors are the data that your computer reads when it auto-detects
+// this USB device (called "enumeration" in USB lingo). The most commonly
+// changed items are editable at the top of this file. Changing things
+// in here should only be done by those who've read chapter 9 of the USB
+// spec and relevant portions of any USB class specifications!
+
+static const uint8_t PROGMEM device_descriptor[] = {
+ 18, // bLength
+ 1, // bDescriptorType
+ 0x00, 0x02, // bcdUSB
+ 2, // bDeviceClass
+ 0, // bDeviceSubClass
+ 0, // bDeviceProtocol
+ ENDPOINT0_SIZE, // bMaxPacketSize0
+ LSB(VENDOR_ID), MSB(VENDOR_ID), // idVendor
+ LSB(PRODUCT_ID), MSB(PRODUCT_ID), // idProduct
+ 0x00, 0x01, // bcdDevice
+ 1, // iManufacturer
+ 2, // iProduct
+ 3, // iSerialNumber
+ 1 // bNumConfigurations
+};
+
+#define CONFIG1_DESC_SIZE (9+9+5+5+4+5+7+9+7+7)
+static const uint8_t PROGMEM config1_descriptor[CONFIG1_DESC_SIZE] = {
+ // configuration descriptor, USB spec 9.6.3, page 264-266, Table 9-10
+ 9, // bLength;
+ 2, // bDescriptorType;
+ LSB(CONFIG1_DESC_SIZE), // wTotalLength
+ MSB(CONFIG1_DESC_SIZE),
+ 2, // bNumInterfaces
+ 1, // bConfigurationValue
+ 0, // iConfiguration
+ 0xC0, // bmAttributes
+ 50, // bMaxPower
+ // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
+ 9, // bLength
+ 4, // bDescriptorType
+ 0, // bInterfaceNumber
+ 0, // bAlternateSetting
+ 1, // bNumEndpoints
+ 0x02, // bInterfaceClass
+ 0x02, // bInterfaceSubClass
+ 0x01, // bInterfaceProtocol
+ 0, // iInterface
+ // CDC Header Functional Descriptor, CDC Spec 5.2.3.1, Table 26
+ 5, // bFunctionLength
+ 0x24, // bDescriptorType
+ 0x00, // bDescriptorSubtype
+ 0x10, 0x01, // bcdCDC
+ // Call Management Functional Descriptor, CDC Spec 5.2.3.2, Table 27
+ 5, // bFunctionLength
+ 0x24, // bDescriptorType
+ 0x01, // bDescriptorSubtype
+ 0x01, // bmCapabilities
+ 1, // bDataInterface
+ // Abstract Control Management Functional Descriptor, CDC Spec 5.2.3.3, Table 28
+ 4, // bFunctionLength
+ 0x24, // bDescriptorType
+ 0x02, // bDescriptorSubtype
+ 0x06, // bmCapabilities
+ // Union Functional Descriptor, CDC Spec 5.2.3.8, Table 33
+ 5, // bFunctionLength
+ 0x24, // bDescriptorType
+ 0x06, // bDescriptorSubtype
+ 0, // bMasterInterface
+ 1, // bSlaveInterface0
+ // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+ 7, // bLength
+ 5, // bDescriptorType
+ CDC_ACM_ENDPOINT | 0x80, // bEndpointAddress
+ 0x03, // bmAttributes (0x03=intr)
+ CDC_ACM_SIZE, 0, // wMaxPacketSize
+ 64, // bInterval
+ // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
+ 9, // bLength
+ 4, // bDescriptorType
+ 1, // bInterfaceNumber
+ 0, // bAlternateSetting
+ 2, // bNumEndpoints
+ 0x0A, // bInterfaceClass
+ 0x00, // bInterfaceSubClass
+ 0x00, // bInterfaceProtocol
+ 0, // iInterface
+ // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+ 7, // bLength
+ 5, // bDescriptorType
+ CDC_RX_ENDPOINT, // bEndpointAddress
+ 0x02, // bmAttributes (0x02=bulk)
+ CDC_RX_SIZE, 0, // wMaxPacketSize
+ 0, // bInterval
+ // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+ 7, // bLength
+ 5, // bDescriptorType
+ CDC_TX_ENDPOINT | 0x80, // bEndpointAddress
+ 0x02, // bmAttributes (0x02=bulk)
+ CDC_TX_SIZE, 0, // wMaxPacketSize
+ 0 // bInterval
+};
+
+// If you're desperate for a little extra code memory, these strings
+// can be completely removed if iManufacturer, iProduct, iSerialNumber
+// in the device desciptor are changed to zeros.
+struct usb_string_descriptor_struct {
+ uint8_t bLength;
+ uint8_t bDescriptorType;
+ int16_t wString[];
+};
+static const struct usb_string_descriptor_struct PROGMEM string0 = {
+ 4,
+ 3,
+ {0x0409}
+};
+static const struct usb_string_descriptor_struct PROGMEM string1 = {
+ sizeof(STR_MANUFACTURER),
+ 3,
+ STR_MANUFACTURER
+};
+static const struct usb_string_descriptor_struct PROGMEM string2 = {
+ sizeof(STR_PRODUCT),
+ 3,
+ STR_PRODUCT
+};
+static const struct usb_string_descriptor_struct PROGMEM string3 = {
+ sizeof(STR_SERIAL_NUMBER),
+ 3,
+ STR_SERIAL_NUMBER
+};
+
+// This table defines which descriptor data is sent for each specific
+// request from the host (in wValue and wIndex).
+static const struct descriptor_list_struct {
+ uint16_t wValue;
+ uint16_t wIndex;
+ const uint8_t *addr;
+ uint8_t length;
+} PROGMEM descriptor_list[] = {
+ {0x0100, 0x0000, device_descriptor, sizeof(device_descriptor)},
+ {0x0200, 0x0000, config1_descriptor, sizeof(config1_descriptor)},
+ {0x0300, 0x0000, (const uint8_t *)&string0, 4},
+ {0x0301, 0x0409, (const uint8_t *)&string1, sizeof(STR_MANUFACTURER)},
+ {0x0302, 0x0409, (const uint8_t *)&string2, sizeof(STR_PRODUCT)},
+ {0x0303, 0x0409, (const uint8_t *)&string3, sizeof(STR_SERIAL_NUMBER)}
+};
+#define NUM_DESC_LIST (sizeof(descriptor_list)/sizeof(struct descriptor_list_struct))
+
+
+/**************************************************************************
+ *
+ * Variables - these are the only non-stack RAM usage
+ *
+ **************************************************************************/
+
+// zero when we are not configured, non-zero when enumerated
+static volatile uint8_t usb_configuration=0;
+
+// the time remaining before we transmit any partially full
+// packet, or send a zero length packet.
+static volatile uint8_t transmit_flush_timer=0;
+static uint8_t transmit_previous_timeout=0;
+
+// serial port settings (baud rate, control signals, etc) set
+// by the PC. These are ignored, but kept in RAM.
+static uint8_t cdc_line_coding[7]={0x00, 0xE1, 0x00, 0x00, 0x00, 0x00, 0x08};
+static uint8_t cdc_line_rtsdtr=0;
+
+
+/**************************************************************************
+ *
+ * Public Functions - these are the API intended for the user
+ *
+ **************************************************************************/
+
+// initialize USB serial
+void usb_init(void)
+{
+ sei();
+ HW_CONFIG();
+ USB_FREEZE(); // enable USB
+ PLL_CONFIG(); // config PLL, 16 MHz xtal
+ while (!(PLLCSR & (1<<PLOCK))) ; // wait for PLL lock
+ USB_CONFIG(); // start USB clock
+ UDCON = 0; // enable attach resistor
+ usb_configuration = 0;
+ cdc_line_rtsdtr = 0;
+ UDIEN = (1<<EORSTE)|(1<<SOFE);
+}
+
+// return 0 if the USB is not configured, or the configuration
+// number selected by the HOST
+uint8_t usb_configured(void)
+{
+ return usb_configuration;
+}
+
+// get the next character, or -1 if nothing received
+int16_t usb_serial_getchar(void)
+{
+ uint8_t c, intr_state;
+
+ // interrupts are disabled so these functions can be
+ // used from the main program or interrupt context,
+ // even both in the same program!
+ intr_state = SREG;
+ cli();
+ if (!usb_configuration) {
+ SREG = intr_state;
+ return -1;
+ }
+ UENUM = CDC_RX_ENDPOINT;
+ retry:
+ c = UEINTX;
+ if (!(c & (1<<RWAL))) {
+ // no data in buffer
+ if (c & (1<<RXOUTI)) {
+ UEINTX = 0x6B;
+ goto retry;
+ }
+ SREG = intr_state;
+ return -1;
+ }
+ // take one byte out of the buffer
+ c = UEDATX;
+ // if buffer completely used, release it
+ if (!(UEINTX & (1<<RWAL))) UEINTX = 0x6B;
+ SREG = intr_state;
+ return c;
+}
+
+// number of bytes available in the receive buffer
+uint8_t usb_serial_available(void)
+{
+ uint8_t n=0, i, intr_state;
+
+ intr_state = SREG;
+ cli();
+ if (usb_configuration) {
+ UENUM = CDC_RX_ENDPOINT;
+ n = UEBCLX;
+ if (!n) {
+ i = UEINTX;
+ if (i & (1<<RXOUTI) && !(i & (1<<RWAL))) UEINTX = 0x6B;
+ }
+ }
+ SREG = intr_state;
+ return n;
+}
+
+// discard any buffered input
+void usb_serial_flush_input(void)
+{
+ uint8_t intr_state;
+
+ if (usb_configuration) {
+ intr_state = SREG;
+ cli();
+ UENUM = CDC_RX_ENDPOINT;
+ while ((UEINTX & (1<<RWAL))) {
+ UEINTX = 0x6B;
+ }
+ SREG = intr_state;
+ }
+}
+
+// transmit a character. 0 returned on success, -1 on error
+int8_t usb_serial_putchar(uint8_t c)
+{
+ uint8_t timeout, intr_state;
+
+ // if we're not online (enumerated and configured), error
+ if (!usb_configuration) return -1;
+ // interrupts are disabled so these functions can be
+ // used from the main program or interrupt context,
+ // even both in the same program!
+ intr_state = SREG;
+ cli();
+ UENUM = CDC_TX_ENDPOINT;
+ // if we gave up due to timeout before, don't wait again
+ if (transmit_previous_timeout) {
+ if (!(UEINTX & (1<<RWAL))) {
+ SREG = intr_state;
+ return -1;
+ }
+ transmit_previous_timeout = 0;
+ }
+ // wait for the FIFO to be ready to accept data
+ timeout = UDFNUML + TRANSMIT_TIMEOUT;
+ while (1) {
+ // are we ready to transmit?
+ if (UEINTX & (1<<RWAL)) break;
+ SREG = intr_state;
+ // have we waited too long? This happens if the user
+ // is not running an application that is listening
+ if (UDFNUML == timeout) {
+ transmit_previous_timeout = 1;
+ return -1;
+ }
+ // has the USB gone offline?
+ if (!usb_configuration) return -1;
+ // get ready to try checking again
+ intr_state = SREG;
+ cli();
+ UENUM = CDC_TX_ENDPOINT;
+ }
+ // actually write the byte into the FIFO
+ UEDATX = c;
+ // if this completed a packet, transmit it now!
+ if (!(UEINTX & (1<<RWAL))) UEINTX = 0x3A;
+ transmit_flush_timer = TRANSMIT_FLUSH_TIMEOUT;
+ SREG = intr_state;
+ return 0;
+}
+
+
+// transmit a character, but do not wait if the buffer is full,
+// 0 returned on success, -1 on buffer full or error
+int8_t usb_serial_putchar_nowait(uint8_t c)
+{
+ uint8_t intr_state;
+
+ if (!usb_configuration) return -1;
+ intr_state = SREG;
+ cli();
+ UENUM = CDC_TX_ENDPOINT;
+ if (!(UEINTX & (1<<RWAL))) {
+ // buffer is full
+ SREG = intr_state;
+ return -1;
+ }
+ // actually write the byte into the FIFO
+ UEDATX = c;
+ // if this completed a packet, transmit it now!
+ if (!(UEINTX & (1<<RWAL))) UEINTX = 0x3A;
+ transmit_flush_timer = TRANSMIT_FLUSH_TIMEOUT;
+ SREG = intr_state;
+ return 0;
+}
+
+// transmit a buffer.
+// 0 returned on success, -1 on error
+// This function is optimized for speed! Each call takes approx 6.1 us overhead
+// plus 0.25 us per byte. 12 Mbit/sec USB has 8.67 us per-packet overhead and
+// takes 0.67 us per byte. If called with 64 byte packet-size blocks, this function
+// can transmit at full USB speed using 43% CPU time. The maximum theoretical speed
+// is 19 packets per USB frame, or 1216 kbytes/sec. However, bulk endpoints have the
+// lowest priority, so any other USB devices will likely reduce the speed. Speed
+// can also be limited by how quickly the PC-based software reads data, as the host
+// controller in the PC will not allocate bandwitdh without a pending read request.
+// (thanks to Victor Suarez for testing and feedback and initial code)
+
+int8_t usb_serial_write(const uint8_t *buffer, uint16_t size)
+{
+ uint8_t timeout, intr_state, write_size;
+
+ // if we're not online (enumerated and configured), error
+ if (!usb_configuration) return -1;
+ // interrupts are disabled so these functions can be
+ // used from the main program or interrupt context,
+ // even both in the same program!
+ intr_state = SREG;
+ cli();
+ UENUM = CDC_TX_ENDPOINT;
+ // if we gave up due to timeout before, don't wait again
+ if (transmit_previous_timeout) {
+ if (!(UEINTX & (1<<RWAL))) {
+ SREG = intr_state;
+ return -1;
+ }
+ transmit_previous_timeout = 0;
+ }
+ // each iteration of this loop transmits a packet
+ while (size) {
+ // wait for the FIFO to be ready to accept data
+ timeout = UDFNUML + TRANSMIT_TIMEOUT;
+ while (1) {
+ // are we ready to transmit?
+ if (UEINTX & (1<<RWAL)) break;
+ SREG = intr_state;
+ // have we waited too long? This happens if the user
+ // is not running an application that is listening
+ if (UDFNUML == timeout) {
+ transmit_previous_timeout = 1;
+ return -1;
+ }
+ // has the USB gone offline?
+ if (!usb_configuration) return -1;
+ // get ready to try checking again
+ intr_state = SREG;
+ cli();
+ UENUM = CDC_TX_ENDPOINT;
+ }
+
+ // compute how many bytes will fit into the next packet
+ write_size = CDC_TX_SIZE - UEBCLX;
+ if (write_size > size) write_size = size;
+ size -= write_size;
+
+ // write the packet
+ switch (write_size) {
+ #if (CDC_TX_SIZE == 64)
+ case 64: UEDATX = *buffer++;
+ case 63: UEDATX = *buffer++;
+ case 62: UEDATX = *buffer++;
+ case 61: UEDATX = *buffer++;
+ case 60: UEDATX = *buffer++;
+ case 59: UEDATX = *buffer++;
+ case 58: UEDATX = *buffer++;
+ case 57: UEDATX = *buffer++;
+ case 56: UEDATX = *buffer++;
+ case 55: UEDATX = *buffer++;
+ case 54: UEDATX = *buffer++;
+ case 53: UEDATX = *buffer++;
+ case 52: UEDATX = *buffer++;
+ case 51: UEDATX = *buffer++;
+ case 50: UEDATX = *buffer++;
+ case 49: UEDATX = *buffer++;
+ case 48: UEDATX = *buffer++;
+ case 47: UEDATX = *buffer++;
+ case 46: UEDATX = *buffer++;
+ case 45: UEDATX = *buffer++;
+ case 44: UEDATX = *buffer++;
+ case 43: UEDATX = *buffer++;
+ case 42: UEDATX = *buffer++;
+ case 41: UEDATX = *buffer++;
+ case 40: UEDATX = *buffer++;
+ case 39: UEDATX = *buffer++;
+ case 38: UEDATX = *buffer++;
+ case 37: UEDATX = *buffer++;
+ case 36: UEDATX = *buffer++;
+ case 35: UEDATX = *buffer++;
+ case 34: UEDATX = *buffer++;
+ case 33: UEDATX = *buffer++;
+ #endif
+ #if (CDC_TX_SIZE >= 32)
+ case 32: UEDATX = *buffer++;
+ case 31: UEDATX = *buffer++;
+ case 30: UEDATX = *buffer++;
+ case 29: UEDATX = *buffer++;
+ case 28: UEDATX = *buffer++;
+ case 27: UEDATX = *buffer++;
+ case 26: UEDATX = *buffer++;
+ case 25: UEDATX = *buffer++;
+ case 24: UEDATX = *buffer++;
+ case 23: UEDATX = *buffer++;
+ case 22: UEDATX = *buffer++;
+ case 21: UEDATX = *buffer++;
+ case 20: UEDATX = *buffer++;
+ case 19: UEDATX = *buffer++;
+ case 18: UEDATX = *buffer++;
+ case 17: UEDATX = *buffer++;
+ #endif
+ #if (CDC_TX_SIZE >= 16)
+ case 16: UEDATX = *buffer++;
+ case 15: UEDATX = *buffer++;
+ case 14: UEDATX = *buffer++;
+ case 13: UEDATX = *buffer++;
+ case 12: UEDATX = *buffer++;
+ case 11: UEDATX = *buffer++;
+ case 10: UEDATX = *buffer++;
+ case 9: UEDATX = *buffer++;
+ #endif
+ case 8: UEDATX = *buffer++;
+ case 7: UEDATX = *buffer++;
+ case 6: UEDATX = *buffer++;
+ case 5: UEDATX = *buffer++;
+ case 4: UEDATX = *buffer++;
+ case 3: UEDATX = *buffer++;
+ case 2: UEDATX = *buffer++;
+ default:
+ case 1: UEDATX = *buffer++;
+ case 0: break;
+ }
+ // if this completed a packet, transmit it now!
+ if (!(UEINTX & (1<<RWAL))) UEINTX = 0x3A;
+ transmit_flush_timer = TRANSMIT_FLUSH_TIMEOUT;
+ SREG = intr_state;
+ }
+ return 0;
+}
+
+
+// immediately transmit any buffered output.
+// This doesn't actually transmit the data - that is impossible!
+// USB devices only transmit when the host allows, so the best
+// we can do is release the FIFO buffer for when the host wants it
+void usb_serial_flush_output(void)
+{
+ uint8_t intr_state;
+
+ intr_state = SREG;
+ cli();
+ if (transmit_flush_timer) {
+ UENUM = CDC_TX_ENDPOINT;
+ UEINTX = 0x3A;
+ transmit_flush_timer = 0;
+ }
+ SREG = intr_state;
+}
+
+// functions to read the various async serial settings. These
+// aren't actually used by USB at all (communication is always
+// at full USB speed), but they are set by the host so we can
+// set them properly if we're converting the USB to a real serial
+// communication
+// uint32_t usb_serial_get_baud(void)
+// {
+// return *(uint32_t *)cdc_line_coding;
+// }
+uint8_t usb_serial_get_stopbits(void)
+{
+ return cdc_line_coding[4];
+}
+uint8_t usb_serial_get_paritytype(void)
+{
+ return cdc_line_coding[5];
+}
+uint8_t usb_serial_get_numbits(void)
+{
+ return cdc_line_coding[6];
+}
+uint8_t usb_serial_get_control(void)
+{
+ return cdc_line_rtsdtr;
+}
+// write the control signals, DCD, DSR, RI, etc
+// There is no CTS signal. If software on the host has transmitted
+// data to you but you haven't been calling the getchar function,
+// it remains buffered (either here or on the host) and can not be
+// lost because you weren't listening at the right time, like it
+// would in real serial communication.
+int8_t usb_serial_set_control(uint8_t signals)
+{
+ uint8_t intr_state;
+
+ intr_state = SREG;
+ cli();
+ if (!usb_configuration) {
+ // we're not enumerated/configured
+ SREG = intr_state;
+ return -1;
+ }
+
+ UENUM = CDC_ACM_ENDPOINT;
+ if (!(UEINTX & (1<<RWAL))) {
+ // unable to write
+ // TODO; should this try to abort the previously
+ // buffered message??
+ SREG = intr_state;
+ return -1;
+ }
+ UEDATX = 0xA1;
+ UEDATX = 0x20;
+ UEDATX = 0;
+ UEDATX = 0;
+ UEDATX = 0; // 0 seems to work nicely. what if this is 1??
+ UEDATX = 0;
+ UEDATX = 1;
+ UEDATX = 0;
+ UEDATX = signals;
+ UEINTX = 0x3A;
+ SREG = intr_state;
+ return 0;
+}
+
+
+
+/**************************************************************************
+ *
+ * Private Functions - not intended for general user consumption....
+ *
+ **************************************************************************/
+
+
+// USB Device Interrupt - handle all device-level events
+// the transmit buffer flushing is triggered by the start of frame
+//
+ISR(USB_GEN_vect, ISR_BLOCK)
+{
+ uint8_t intbits, t;
+ intbits = UDINT;
+ UDINT = 0;
+ if (intbits & (1<<EORSTI)) {
+ UENUM = 0;
+ UECONX = 1;
+ UECFG0X = EP_TYPE_CONTROL;
+ UECFG1X = EP_SIZE(ENDPOINT0_SIZE) | EP_SINGLE_BUFFER;
+ UEIENX = (1<<RXSTPE);
+ usb_configuration = 0;
+ cdc_line_rtsdtr = 0;
+ }
+ if (intbits & (1<<SOFI)) {
+ if (usb_configuration) {
+ t = transmit_flush_timer;
+ if (t) {
+ transmit_flush_timer = --t;
+ if (!t) {
+ UENUM = CDC_TX_ENDPOINT;
+ UEINTX = 0x3A;
+ }
+ }
+ }
+ }
+}
+
+
+// Misc functions to wait for ready and send/receive packets
+static inline void usb_wait_in_ready(void)
+{
+ while (!(UEINTX & (1<<TXINI))) ;
+}
+static inline void usb_send_in(void)
+{
+ UEINTX = ~(1<<TXINI);
+}
+static inline void usb_wait_receive_out(void)
+{
+ while (!(UEINTX & (1<<RXOUTI))) ;
+}
+static inline void usb_ack_out(void)
+{
+ UEINTX = ~(1<<RXOUTI);
+}
+
+
+
+// USB Endpoint Interrupt - endpoint 0 is handled here. The
+// other endpoints are manipulated by the user-callable
+// functions, and the start-of-frame interrupt.
+//
+ISR(USB_COM_vect, ISR_BLOCK)
+{
+ uint8_t intbits;
+ const uint8_t *list;
+ const uint8_t *cfg;
+ uint8_t i, n, len, en;
+ uint8_t *p;
+ uint8_t bmRequestType;
+ uint8_t bRequest;
+ uint16_t wValue;
+ uint16_t wIndex;
+ uint16_t wLength;
+ uint16_t desc_val;
+ const uint8_t *desc_addr;
+ uint8_t desc_length;
+
+ UENUM = 0;
+ intbits = UEINTX;
+ if (intbits & (1<<RXSTPI)) {
+ bmRequestType = UEDATX;
+ bRequest = UEDATX;
+ wValue = UEDATX;
+ wValue |= (UEDATX << 8);
+ wIndex = UEDATX;
+ wIndex |= (UEDATX << 8);
+ wLength = UEDATX;
+ wLength |= (UEDATX << 8);
+ UEINTX = ~((1<<RXSTPI) | (1<<RXOUTI) | (1<<TXINI));
+ if (bRequest == GET_DESCRIPTOR) {
+ list = (const uint8_t *)descriptor_list;
+ for (i=0; ; i++) {
+ if (i >= NUM_DESC_LIST) {
+ UECONX = (1<<STALLRQ)|(1<<EPEN); //stall
+ return;
+ }
+ desc_val = pgm_read_word(list);
+ if (desc_val != wValue) {
+ list += sizeof(struct descriptor_list_struct);
+ continue;
+ }
+ list += 2;
+ desc_val = pgm_read_word(list);
+ if (desc_val != wIndex) {
+ list += sizeof(struct descriptor_list_struct)-2;
+ continue;
+ }
+ list += 2;
+ desc_addr = (const uint8_t *)pgm_read_word(list);
+ list += 2;
+ desc_length = pgm_read_byte(list);
+ break;
+ }
+ len = (wLength < 256) ? wLength : 255;
+ if (len > desc_length) len = desc_length;
+ do {
+ // wait for host ready for IN packet
+ do {
+ i = UEINTX;
+ } while (!(i & ((1<<TXINI)|(1<<RXOUTI))));
+ if (i & (1<<RXOUTI))
+ {
+ return; // abort
+ }
+ // send IN packet
+ n = len < ENDPOINT0_SIZE ? len : ENDPOINT0_SIZE;
+ for (i = n; i; i--) {
+ UEDATX = pgm_read_byte(desc_addr++);
+ }
+ len -= n;
+ usb_send_in();
+ } while (len || n == ENDPOINT0_SIZE);
+ return;
+ }
+ if (bRequest == SET_ADDRESS) {
+ usb_send_in();
+ usb_wait_in_ready();
+ UDADDR = wValue | (1<<ADDEN);
+ return;
+ }
+ if (bRequest == SET_CONFIGURATION && bmRequestType == 0) {
+ usb_configuration = wValue;
+ cdc_line_rtsdtr = 0;
+ transmit_flush_timer = 0;
+ usb_send_in();
+ cfg = endpoint_config_table;
+ for (i=1; i<5; i++) {
+ UENUM = i;
+ en = pgm_read_byte(cfg++);
+ UECONX = en;
+ if (en) {
+ UECFG0X = pgm_read_byte(cfg++);
+ UECFG1X = pgm_read_byte(cfg++);
+ }
+ }
+ UERST = 0x1E;
+ UERST = 0;
+ return;
+ }
+ if (bRequest == GET_CONFIGURATION && bmRequestType == 0x80) {
+ usb_wait_in_ready();
+ UEDATX = usb_configuration;
+ usb_send_in();
+ return;
+ }
+ if (bRequest == CDC_GET_LINE_CODING && bmRequestType == 0xA1) {
+ usb_wait_in_ready();
+ p = cdc_line_coding;
+ for (i=0; i<7; i++) {
+ UEDATX = *p++;
+ }
+ usb_send_in();
+ return;
+ }
+ if (bRequest == CDC_SET_LINE_CODING && bmRequestType == 0x21) {
+ usb_wait_receive_out();
+ p = cdc_line_coding;
+ for (i=0; i<7; i++) {
+ *p++ = UEDATX;
+ }
+ usb_ack_out();
+ usb_send_in();
+ return;
+ }
+ if (bRequest == CDC_SET_CONTROL_LINE_STATE && bmRequestType == 0x21) {
+ cdc_line_rtsdtr = wValue;
+ usb_wait_in_ready();
+ usb_send_in();
+ return;
+ }
+ if (bRequest == GET_STATUS) {
+ usb_wait_in_ready();
+ i = 0;
+ #ifdef SUPPORT_ENDPOINT_HALT
+ if (bmRequestType == 0x82) {
+ UENUM = wIndex;
+ if (UECONX & (1<<STALLRQ)) i = 1;
+ UENUM = 0;
+ }
+ #endif
+ UEDATX = i;
+ UEDATX = 0;
+ usb_send_in();
+ return;
+ }
+ #ifdef SUPPORT_ENDPOINT_HALT
+ if ((bRequest == CLEAR_FEATURE || bRequest == SET_FEATURE)
+ && bmRequestType == 0x02 && wValue == 0) {
+ i = wIndex & 0x7F;
+ if (i >= 1 && i <= MAX_ENDPOINT) {
+ usb_send_in();
+ UENUM = i;
+ if (bRequest == SET_FEATURE) {
+ UECONX = (1<<STALLRQ)|(1<<EPEN);
+ } else {
+ UECONX = (1<<STALLRQC)|(1<<RSTDT)|(1<<EPEN);
+ UERST = (1 << i);
+ UERST = 0;
+ }
+ return;
+ }
+ }
+ #endif
+ }
+ UECONX = (1<<STALLRQ) | (1<<EPEN); // stall
+}
+
+
+#define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
+
+#if 0
+#include <stdio.h>
+static int dw_putchar(char __c, FILE *__stream) { DWDR = __c;(void)__stream; return __c;}
+FILE dwout = FDEV_SETUP_STREAM(dw_putchar, NULL, _FDEV_SETUP_WRITE);
+stdout=&dwout;
+#endif
+
+// Very simple character echo test
+int main(void)
+{
+ CPU_PRESCALE(0);
+ usb_init();
+ while(usb_configured()==0);
+ while (1) {
+ int n = usb_serial_getchar();
+ if (n >= 0) usb_serial_putchar(n);
+ }
+}
--- /dev/null
+/* vim: set sts=4:sw=4:ts=4:noexpandtab */
+#ifndef usb_serial_h__
+#define usb_serial_h__
+
+#include <stdint.h>
+
+// setup
+void usb_init(void); // initialize everything
+uint8_t usb_configured(void); // is the USB port configured
+
+// receiving data
+int16_t usb_serial_getchar(void); // receive a character (-1 if timeout/error)
+uint8_t usb_serial_available(void); // number of bytes in receive buffer
+void usb_serial_flush_input(void); // discard any buffered input
+
+// transmitting data
+int8_t usb_serial_putchar(uint8_t c); // transmit a character
+int8_t usb_serial_putchar_nowait(uint8_t c); // transmit a character, do not wait
+int8_t usb_serial_write(const uint8_t *buffer, uint16_t size); // transmit a buffer
+void usb_serial_flush_output(void); // immediately transmit any buffered output
+
+// serial parameters
+uint32_t usb_serial_get_baud(void); // get the baud rate
+uint8_t usb_serial_get_stopbits(void); // get the number of stop bits
+uint8_t usb_serial_get_paritytype(void);// get the parity type
+uint8_t usb_serial_get_numbits(void); // get the number of data bits
+uint8_t usb_serial_get_control(void); // get the RTS and DTR signal state
+int8_t usb_serial_set_control(uint8_t signals); // set DSR, DCD, RI, etc
+
+// constants corresponding to the various serial parameters
+#define USB_SERIAL_DTR 0x01
+#define USB_SERIAL_RTS 0x02
+#define USB_SERIAL_1_STOP 0
+#define USB_SERIAL_1_5_STOP 1
+#define USB_SERIAL_2_STOP 2
+#define USB_SERIAL_PARITY_NONE 0
+#define USB_SERIAL_PARITY_ODD 1
+#define USB_SERIAL_PARITY_EVEN 2
+#define USB_SERIAL_PARITY_MARK 3
+#define USB_SERIAL_PARITY_SPACE 4
+#define USB_SERIAL_DCD 0x01
+#define USB_SERIAL_DSR 0x02
+#define USB_SERIAL_BREAK 0x04
+#define USB_SERIAL_RI 0x08
+#define USB_SERIAL_FRAME_ERR 0x10
+#define USB_SERIAL_PARITY_ERR 0x20
+#define USB_SERIAL_OVERRUN_ERR 0x40
+
+// This file does not include the HID debug functions, so these empty
+// macros replace them with nothing, so users can compile code that
+// has calls to these functions.
+#define usb_debug_putchar(c)
+#define usb_debug_flush_output()
+
+
+
+// Everything below this point is only intended for usb_serial.c
+#ifdef USB_SERIAL_PRIVATE_INCLUDE
+#include <avr/io.h>
+#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+
+#define EP_TYPE_CONTROL 0x00
+#define EP_TYPE_BULK_IN 0x81
+#define EP_TYPE_BULK_OUT 0x80
+#define EP_TYPE_INTERRUPT_IN 0xC1
+#define EP_TYPE_INTERRUPT_OUT 0xC0
+#define EP_TYPE_ISOCHRONOUS_IN 0x41
+#define EP_TYPE_ISOCHRONOUS_OUT 0x40
+#define EP_SINGLE_BUFFER 0x02
+#define EP_DOUBLE_BUFFER 0x06
+#define EP_SIZE(s) ((s) == 64 ? 0x30 : \
+ ((s) == 32 ? 0x20 : \
+ ((s) == 16 ? 0x10 : \
+ 0x00)))
+
+#define MAX_ENDPOINT 4
+
+#define LSB(n) (n & 255)
+#define MSB(n) ((n >> 8) & 255)
+
+#if defined(__AVR_AT90USB162__)
+#define HW_CONFIG()
+#define PLL_CONFIG() (PLLCSR = ((1<<PLLE)|(1<<PLLP0)))
+#define USB_CONFIG() (USBCON = (1<<USBE))
+#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
+#elif defined(__AVR_ATmega32U4__)
+#define HW_CONFIG() (UHWCON = 0x01)
+#define PLL_CONFIG() (PLLCSR = 0x12)
+#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
+#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
+#elif defined(__AVR_AT90USB646__)
+#define HW_CONFIG() (UHWCON = 0x81)
+#define PLL_CONFIG() (PLLCSR = 0x1A)
+#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
+#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
+#elif defined(__AVR_AT90USB1286__)
+#define HW_CONFIG() (UHWCON = 0x81)
+#define PLL_CONFIG() (PLLCSR = 0x16)
+#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
+#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
+#endif
+
+// standard control endpoint request types
+#define GET_STATUS 0
+#define CLEAR_FEATURE 1
+#define SET_FEATURE 3
+#define SET_ADDRESS 5
+#define GET_DESCRIPTOR 6
+#define GET_CONFIGURATION 8
+#define SET_CONFIGURATION 9
+#define GET_INTERFACE 10
+#define SET_INTERFACE 11
+// HID (human interface device)
+#define HID_GET_REPORT 1
+#define HID_GET_PROTOCOL 3
+#define HID_SET_REPORT 9
+#define HID_SET_IDLE 10
+#define HID_SET_PROTOCOL 11
+// CDC (communication class device)
+#define CDC_SET_LINE_CODING 0x20
+#define CDC_GET_LINE_CODING 0x21
+#define CDC_SET_CONTROL_LINE_STATE 0x22
+#endif
+#endif
--- /dev/null
+/* vim: set sts=4:sw=4:ts=4:noexpandtab
+ simusb.c
+
+ Copyright 2012 Torbjorn Tyridal <ttyridal@gmail.com>
+
+ This file is part of simavr.
+
+ simavr is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ simavr is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with simavr. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <sys/mman.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <libgen.h>
+
+#include <pthread.h>
+
+#include "sim_avr.h"
+#include "avr_ioport.h"
+#include "sim_elf.h"
+#include "sim_hex.h"
+#include "sim_gdb.h"
+#include "vhci_usb.h"
+#include "sim_vcd_file.h"
+
+struct vhci_usb_t vhci_usb;
+avr_t * avr = NULL;
+avr_vcd_t vcd_file;
+
+
+
+char avr_flash_path[1024];
+int avr_flash_fd = 0;
+
+// avr special flash initalization
+// here: open and map a file to enable a persistent storage for the flash memory
+void avr_special_init( avr_t* avr)
+{
+ //puts(" --=== INIT CALLED ===--");
+ // release flash memory if allocated
+ if(avr->flash) free(avr->flash);
+ // open the file
+ avr_flash_fd = open(avr_flash_path, O_RDWR|O_CREAT, 0644);
+ if (avr_flash_fd < 0) {
+ perror(avr_flash_path);
+ exit(1);
+ }
+ // resize and map the file the file
+ (void)ftruncate(avr_flash_fd, avr->flashend + 1);
+ avr->flash = (uint8_t*)mmap(NULL, avr->flashend + 1, // 32k is multiple of 4096
+ PROT_READ|PROT_WRITE, MAP_SHARED, avr_flash_fd, 0);
+ if (!avr->flash) {
+ fprintf(stderr, "unable to map memory\n");
+ perror(avr_flash_path);
+ exit(1);
+ }
+}
+
+// avr special flash deinitalization
+// here: cleanup the persistent storage
+void avr_special_deinit( avr_t* avr)
+{
+ //puts(" --=== DEINIT CALLED ===--");
+ // unmap and close the file
+ munmap( avr->flash, avr->flashend + 1);
+ close( avr_flash_fd);
+ // signal that cleanup is done
+ avr->flash = NULL;
+}
+
+int main(int argc, char *argv[])
+{
+// elf_firmware_t f;
+ const char * pwd = dirname(argv[0]);
+
+ avr = avr_make_mcu_by_name("at90usb162");
+ if (!avr) {
+ fprintf(stderr, "%s: Error creating the AVR core\n", argv[0]);
+ exit(1);
+ }
+ strcpy(avr_flash_path, "simusb_flash.bin");
+ // register our own functions
+ avr->special_init = avr_special_init;
+ avr->special_deinit = avr_special_deinit;
+ //avr->reset = NULL;
+ avr_init(avr);
+ avr->frequency = 8000000;
+
+ // this trick creates a file that contains /and keep/ the flash
+ // in the same state as it was before. This allow the bootloader
+ // app to be kept, and re-run if the bootloader doesn't get a
+ // new one
+ {
+ char path[1024];
+ uint32_t base, size;
+ snprintf(path, sizeof(path), "%s/../%s", pwd, "at90usb162_cdc_loopback.hex");
+
+ uint8_t * boot = read_ihex_file(path, &size, &base);
+ if (!boot) {
+ fprintf(stderr, "%s: Unable to load %s\n", argv[0], path);
+ exit(1);
+ }
+ printf("Booloader %04x: %d\n", base, size);
+ memcpy(avr->flash + base, boot, size);
+ free(boot);
+ avr->pc = base;
+ avr->codeend = avr->flashend;
+ }
+
+ // even if not setup at startup, activate gdb if crashing
+ avr->gdb_port = 1234;
+ if (0) {
+ //avr->state = cpu_Stopped;
+ avr_gdb_init(avr);
+ }
+
+ vhci_usb_init(avr, &vhci_usb);
+ vhci_usb_connect(&vhci_usb, '0');
+
+
+ while (1) {
+ avr_run(avr);
+ }
+}
projects / simavr / commitdiff