atmega328 mcu

diff --git a/firmware/config.mk b/firmware/config.mk
index e9a5b5d..43eba48 100644 (file)
--- a/firmware/config.mk
+++ b/firmware/config.mk
@@ -171,7 +171,7 @@ endif
 ifneq (,$(findstring $(board),arduino))
 GCC := avr-gcc
 CP   = avr-objcopy
-mcu ?= atmega168
+mcu ?= atmega328
 platform ?= arduino
 #BSL := avrdude -V -F -c stk500v1 -p m328p -b 57600 -P /dev/ttyACM0 -U flash:w:goodfet.hex
 CFLAGS=$(DEBUG) -Iinclude -mmcu=$(mcu) -W -Os -mcall-prologues -Wall -Wextra -Wuninitialized -fpack-struct -fshort-enums -funsigned-bitfields

diff --git a/firmware/lib/atmega328.c b/firmware/lib/atmega328.c
new file mode 100644 (file)
index 0000000..896b36f
--- /dev/null
+++ b/firmware/lib/atmega328.c
@@ -0,0 +1,101 @@
+//! MSP430F1612/1611 clock and I/O definitions
+
+#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){
+  //TODO support multiple rates.
+  #define SPEED 9600
+  
+  
+  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;
+  }
+  
+  //#define BAUD 115200L
+#define BAUD 9600L
+#include <util/setbaud.h>
+  UBRR0H = UBRRH_VALUE;
+  UBRR0L = UBRRL_VALUE;
+  
+  UCSR0C = _BV(UCSZ01) | _BV(UCSZ00);
+  UCSR0B = _BV(RXEN0) | _BV(TXEN0);
+  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 avr_init_uart0(){
+  PORTD = _BV(PD2);
+  setbaud0(0);
+  _delay_ms(500); //takes a bit to stabilize
+}
+
+
+void avr_init_uart1(){
+}
+
+
+