From 05e744a159e6c7b808b12e53b5ac231a8045bd8b Mon Sep 17 00:00:00 2001
From: travisutk <travisutk@12e2690d-a6be-4b82-a7b7-67c4a43b65c8>
Date: Sun, 25 Nov 2012 22:04:37 +0000
Subject: [PATCH] Forked donbfet to allow for Zigduino support. Not yet
 working.

git-svn-id: https://svn.code.sf.net/p/goodfet/code/trunk@1352 12e2690d-a6be-4b82-a7b7-67c4a43b65c8
---
 firmware/config.mk            |   4 +-
 firmware/lib/atmega128rfa1.c  | 171 ++++++++++++++++++++++++++++++++++
 firmware/platforms/zigduino.h | 110 ++++++++++++++++++++++
 3 files changed, 283 insertions(+), 2 deletions(-)
 create mode 100644 firmware/lib/atmega128rfa1.c
 create mode 100644 firmware/platforms/zigduino.h

diff --git a/firmware/config.mk b/firmware/config.mk
index f001b48..29a587a 100644
--- a/firmware/config.mk
+++ b/firmware/config.mk
@@ -150,8 +150,8 @@ endif
 ifneq (,$(findstring $(board),zigduino))
 GCC := avr-gcc
 CC := avr-gcc
-mcu ?= atmega1284p
-platform = donbfet
+mcu ?= atmega128rfa1
+platform = zigduino
 CFLAGS=$(DEBUG) -Iinclude -mmcu=$(mcu) -W -Os -mcall-prologues -Wall -Wextra -Wuninitialized -fpack-struct -fshort-enums -funsigned-bitfields
 config := monitor #avr spi
 endif
diff --git a/firmware/lib/atmega128rfa1.c b/firmware/lib/atmega128rfa1.c
new file mode 100644
index 0000000..81dcd2c
--- /dev/null
+++ b/firmware/lib/atmega128rfa1.c
@@ -0,0 +1,171 @@
+#include "platform.h"
+
+#include <avr/io.h>
+#include <util/delay.h>
+
+//! Receive a byte.
+unsigned char serial0_rx(){
+  while( !(UCSR0A & (1 << RXC0)) );
+  return UDR0;
+}
+
+//! Receive a byte.
+unsigned char serial1_rx(){
+  return 0;
+}
+
+//! Transmit a byte.
+void serial0_tx(unsigned char x){
+  while (!(UCSR0A & (1<<UDRE0)) );
+  UDR0 = x;
+}
+
+//! Transmit a byte on the second UART.
+void serial1_tx(unsigned char x){
+}
+
+//! Set the baud rate.
+void setbaud0(unsigned char rate){
+        /* disable briefly */
+        UCSR0B = 0;
+
+        UBRR0L = 4;   /* 500,000 baud at 20MHz */
+        //UBRR0L = 1;   /* 500,000 baud at 8MHz */
+        //UBRR0L = 103; /* 9600 baud */
+        // XXX UBRR0L = 8;     /* 115200 baud ERROR RATE TOO HIGH */
+        UBRR0H = 0;
+
+        UCSR0A = (1 << U2X0);   /* double the baud rate */
+        UCSR0C = (3 << UCSZ00); /* 8N1 */
+
+        /* enabling rx/tx must be done after frame/baud setup */
+        UCSR0B = ((1 << TXEN0) | (1 << RXEN0));
+
+  return;
+  
+}
+
+//! Set the baud rate of the second uart.
+void setbaud1(unsigned char rate){
+  //http://mspgcc.sourceforge.net/baudrate.html
+  switch(rate){
+  case 1://9600 baud
+    
+    break;
+  case 2://19200 baud
+    
+    break;
+  case 3://38400 baud
+    
+    break;
+  case 4://57600 baud
+    
+    break;
+  default:
+  case 5://115200 baud
+    
+    break;
+  }
+}
+
+
+void zigduino_init_uart0(){
+  setbaud0(0);
+  _delay_ms(500); //takes a bit to stabilize
+}
+
+void led_init(){
+  
+}
+
+void  led_on() {
+	PLEDOUT |= (1 << PLEDPIN);
+}
+
+void led_off() {
+	PLEDOUT &= ~(1 << PLEDPIN);
+}
+
+void zigduino_init(){
+        uint8_t x;
+
+        /* explicitly clear interrupts */
+        cli();
+
+        /* move the vectors */
+
+        /* move interrupts from boot flash section */
+        /* NB */
+        /* you MUST use a variable during this process. even highly optimized,
+         * masking the bit, shifting, ANDing, and setting MCUCR will exceed
+         * 4 CPU cycles! set a variable with the desired value for MCUCR and
+         * then set the register once IVCE is enabled
+         */
+        x = MCUCR & ~(1 << IVSEL);
+
+        /* enable change of interrupt vectors */
+        /* NOTE: setting IVCE disables interrupts until the bit is auto-unset 
+         * 4 cycles after being set or after IVSEL is written
+         */
+        MCUCR |= (1 << IVCE);
+        MCUCR = x;
+
+        /* disable the watchdog timer; this macro will disable interrupts for us */
+        /* NOTE: ensure that the WDRF flag is unset in the MCUSR or we will spinlock
+         * when the watchdog times out
+         */
+        MCUSR &= ~(1 << WDRF);
+        wdt_disable();
+
+        /* init the USART */
+        zigduino_init_uart0();
+
+	/* set the LED as an output */
+	PLEDDIR |= (1 << PLEDPIN);
+	PLEDOUT |= (1 << PLEDPIN);
+
+        /* explicitly enable interrupts */
+        sei();
+}
+
+void
+zigduino_reboot()
+{
+	MCUSR &= ~(1 << WDRF);
+	wdt_enable(WDTO_15MS);
+	while(1)
+		_delay_ms(127);
+}
+
+void zigduino_init_uart1(){
+}
+
+uint8_t
+zigduino_get_byte(uint16_t v)
+{
+	/* NB */
+	/* we are only passed in a 16bit word. should 
+	 * be increased to 32bit if we want to handle
+	 * far reads as well
+	 */
+/* XXX should be far on the 1284P, but there are bugs with flash reads using _far */
+/* XXX until the bugs are figured out (probably my fault?) use _near */
+	return pgm_read_byte_near(v);
+}
+
+int * 
+zigduino_ramend(void)
+{
+	/* NB */
+	/* ATmega1284P has 16K SRAM */
+	return (int * )0x4000; 
+}
+
+void
+led_toggle(void)
+{
+	led_on();
+	_delay_ms(30);
+	led_off();
+}
+
diff --git a/firmware/platforms/zigduino.h b/firmware/platforms/zigduino.h
new file mode 100644
index 0000000..cc56739
--- /dev/null
+++ b/firmware/platforms/zigduino.h
@@ -0,0 +1,110 @@
+/*! \file donbfet.h
+  \author Don A. Bailey
+  \brief Port descriptions for the DonbFET platform.
+*/
+
+/* NB: define default CPU frequency */
+//XXX #define F_CPU 8000000UL
+#define F_CPU 20000000UL
+
+#include <avr/io.h>
+#include <avr/wdt.h>
+#include <avr/boot.h>
+#include <avr/sleep.h>
+#include <avr/interrupt.h>
+#include <avr/pgmspace.h>
+#include <util/delay.h>
+#include <inttypes.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <ctype.h>
+
+/* all AVR SRAM starts after I/O mapped memory and registers */
+#define RAMSTART 0x100
+
+#ifndef PB0
+# define PB0 PORTB0
+#endif
+#ifndef PA0
+# define PA0 PORTA0
+#endif
+#ifndef PA1
+# define PA1 PORTA1
+#endif
+#ifndef PA2
+# define PA2 PORTA2
+#endif
+#ifndef PA3
+# define PA3 PORTA3
+#endif
+#ifndef PA4
+# define PA4 PORTA4
+#endif
+#ifndef PA5
+# define PA5 PORTA5
+#endif
+
+//LED on P1.0
+#define PLEDOUT PORTB
+#define PLEDDIR DDRB
+#define PLEDPIN PB0
+
+//Use P3 instead of P5 for target I/O on chips without P5.
+#ifdef msp430f2274
+//#warning "No P5, using P3 instead.  Will break 2618 and 1612 support."
+# define P5OUT P3OUT
+# define P5DIR P3DIR
+# define P5IN P3IN
+# define P5REN P3REN
+
+# define SPIOUT P3OUT
+# define SPIDIR P3DIR
+# define SPIIN  P3IN
+# define SPIREN P3REN
+#else
+
+# if (platform == zigduino)
+#  define SPIOUT PORTA
+#  define SPIDIR DDRA
+#  define SPIIN  PINA
+//# define SPIREN P5REN
+# endif
+#endif
+
+//This is how things used to work, don't do it anymore.
+//#ifdef msp430x1612
+//#define P5REN somedamnedextern
+//#endif
+
+#if (platform == zigduino)
+# define SETSS PORTA|=SS;
+# define CLRSS PORTA&=~SS;
+# define DIRSS DDRA|=SS;
+#else
+//No longer works for Hope badge.
+# define SETSS P5OUT|=BIT0
+# define CLRSS P5OUT&=~BIT0
+# define DIRSS P5DIR|=BIT0;
+#endif
+
+//Used for the Nordic port, !RST pin on regular GoodFET.
+#define SETCE P2OUT|=BIT6
+#define CLRCE P2OUT&=~BIT6
+#define DIRCE P2DIR|=BIT6
+
+// network byte order converters
+#define htons(x) ((((uint16_t)(x) & 0xFF00) >> 8) | \
+				 (((uint16_t)(x) & 0x00FF) << 8))
+#define htonl(x) ((((uint32_t)(x) & 0xFF000000) >> 24) | \
+				  (((uint32_t)(x) & 0x00FF0000) >> 8) | \
+				  (((uint32_t)(x) & 0x0000FF00) << 8) | \
+				  (((uint32_t)(x) & 0x000000FF) << 24))
+
+#define ntohs htons
+#define ntohl htonl
+
+extern uint8_t zigduino_get_byte(uint16_t);
+
-- 
2.20.1