444 lines
12 KiB
C
444 lines
12 KiB
C
/*
|
|
* Copyright (c) 2005, Swedish Institute of Computer Science
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* This file is part of the Contiki operating system.
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <avr/io.h>
|
|
#include <avr/interrupt.h>
|
|
#include <avr/pgmspace.h>
|
|
|
|
#include "contiki-conf.h"
|
|
#include "contiki.h"
|
|
|
|
#include "dev/slip.h"
|
|
#include "dev/rs232.h"
|
|
|
|
/*ATmega32 and smaller have UBRRH/UCSRC at the same I/O address.
|
|
*USART_UCSRC_SEL (bit7) selects writing to UBRHH(0) or UCSRC(1).
|
|
*It is OR'd in below so if not defined we can just set it to zero.
|
|
*/
|
|
#ifndef USART_UCSRC_SEL
|
|
#define USART_UCSRC_SEL 0x00
|
|
#endif
|
|
|
|
/* Currently only the STK500 platform uses a static RAM buffer for printfs.
|
|
* Others print a character at a time using the gcc string pointer.
|
|
* gcc may not strip the unused buffer, even though it is statically
|
|
* allocated in an unused routine.
|
|
*/
|
|
#ifdef RS232_CONF_PRINTF_BUFFER_LENGTH
|
|
#define RS232_PRINTF_BUFFER_LENGTH RS232_CONF_PRINTF_BUFFER_LENGTH
|
|
#else
|
|
#if CONTIKI_TARGET_STK500
|
|
#define RS232_PRINTF_BUFFER_LENGTH 64
|
|
#endif
|
|
#endif
|
|
|
|
/* TX interrupts would allow non-blocking output up to the size of some RAM buffer.
|
|
* Since a RAM buffer is not implemented tx interrupts are superfluous and unwanted
|
|
* because they block debug prints from within interrupt routines
|
|
*/
|
|
#ifdef RS232_CONF_TX_INTERRUPTS
|
|
#define RS232_TX_INTERRUPTS RS232_CONF_TX_INTERRUPTS
|
|
#else
|
|
#define RS232_TX_INTERRUPTS 0
|
|
#endif
|
|
|
|
/* Insert a carriage return after a line feed. This is the default. */
|
|
#ifndef ADD_CARRIAGE_RETURN_AFTER_NEWLINE
|
|
#define ADD_CARRIAGE_RETURN_AFTER_NEWLINE 1
|
|
#endif
|
|
|
|
/* Reducing NUMPORTS from the default will harmlessly disable usage of those ports */
|
|
/* Two ports take 400 bytes flash and 4 bytes RAM. */
|
|
#ifdef RS232_CONF_NUMPORTS
|
|
#define NUMPORTS RS232_CONF_NUMPORTS
|
|
#endif
|
|
|
|
#if defined (__AVR_ATmega128__) || defined(__AVR_ATmega1284P__) || defined(__AVR_ATmega1281__) || defined(__AVR_ATmega128RFA1__) || defined(__AVR_ATmega128RFR2__) || defined(__AVR_ATmega256RFR2__)
|
|
#ifndef NUMPORTS
|
|
#define NUMPORTS 2
|
|
#elif NUMPORTS > 2
|
|
#error Only two serial ports are defined for this processor!
|
|
#endif
|
|
|
|
#if NUMPORTS > 0
|
|
#define D_UDR0 UDR0
|
|
#define D_UDRE0M (1 << UDRE0)
|
|
#define D_UBRR0H UBRR0H
|
|
#define D_UBRR0L UBRR0L
|
|
#define D_UCSR0A UCSR0A
|
|
#define D_UCSR0B UCSR0B
|
|
#define D_UCSR0C UCSR0C
|
|
#define D_USART0_RX_vect USART0_RX_vect
|
|
#define D_USART0_TX_vect USART0_TX_vect
|
|
|
|
#if NUMPORTS > 1
|
|
#define D_UDR1 UDR1
|
|
#define D_UDRE1M (1 << UDRE1)
|
|
#define D_UBRR1H UBRR1H
|
|
#define D_UBRR1L UBRR1L
|
|
#define D_UCSR1A UCSR1A
|
|
#define D_UCSR1B UCSR1B
|
|
#define D_UCSR1C UCSR1C
|
|
#define D_USART1_RX_vect USART1_RX_vect
|
|
#define D_USART1_TX_vect USART1_TX_vect
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#elif defined (__AVR_AT90USB1287__)
|
|
/* Has only UART1, map it to port 0 */
|
|
#ifndef NUMPORTS
|
|
#define NUMPORTS 1
|
|
#elif NUMPORTS > 1
|
|
#error Only one serial port is defined for this processor!
|
|
#endif
|
|
|
|
#if NUMPORTS > 0
|
|
#define D_UDR0 UDR1
|
|
#define D_UDRE0M (1 << UDRE1)
|
|
#define D_UBRR0H UBRR1H
|
|
#define D_UBRR0L UBRR1L
|
|
#define D_UCSR0A UCSR1A
|
|
#define D_UCSR0B UCSR1B
|
|
#define D_UCSR0C UCSR1C
|
|
#define D_USART0_RX_vect USART1_RX_vect
|
|
#define D_USART0_TX_vect USART1_TX_vect
|
|
#endif
|
|
|
|
#elif defined (__AVR_ATmega8515__)
|
|
#ifndef NUMPORTS
|
|
#define NUMPORTS 1
|
|
#elif NUMPORTS > 1
|
|
#error Only one serial port is defined for this processor!
|
|
#endif
|
|
|
|
#if NUMPORTS > 0
|
|
#define D_UDR0 UDR
|
|
#define D_UDRE0M (1 << UDRE)
|
|
#define D_UBRR0H UBRRH
|
|
#define D_UBRR0L UBRRL
|
|
#define D_UCSR0A UCSRA
|
|
#define D_UCSR0B UCSRB
|
|
#define D_UCSR0C UCSRC
|
|
#define D_USART0_RX_vect USART_RX_vect
|
|
#define D_USART0_TX_vect USART_TX_vect
|
|
#endif
|
|
|
|
#elif defined (__AVR_ATmega328P__)
|
|
#ifndef NUMPORTS
|
|
#define NUMPORTS 1
|
|
#elif NUMPORTS > 1
|
|
#error Only one serial port is defined for this processor!
|
|
#endif
|
|
|
|
#if NUMPORTS > 0
|
|
#define D_UDR0 UDR0
|
|
#define D_UDRE0M (1 << UDRE0)
|
|
#define D_UBRR0H UBRR0H
|
|
#define D_UBRR0L UBRR0L
|
|
#define D_UCSR0A UCSR0A
|
|
#define D_UCSR0B UCSR0B
|
|
#define D_UCSR0C UCSR0C
|
|
#define D_USART0_RX_vect USART_RX_vect
|
|
#define D_USART0_TX_vect USART_TX_vect
|
|
#endif
|
|
|
|
#elif defined (__AVR_ATmega8__) || defined (__AVR_ATmega16__) || defined (__AVR_ATmega32__)
|
|
#ifndef NUMPORTS
|
|
#define NUMPORTS 1
|
|
#elif NUMPORTS > 1
|
|
#error Only one serial port is defined for this processor!
|
|
#endif
|
|
|
|
#if NUMPORTS > 0
|
|
#define D_UDR0 UDR
|
|
#define D_UDRE0M (1 << UDRE)
|
|
#define D_UBRR0H UBRRH
|
|
#define D_UBRR0L UBRRL
|
|
#define D_UCSR0A UCSRA
|
|
#define D_UCSR0B UCSRB
|
|
#define D_UCSR0C UCSRC
|
|
#define D_USART0_RX_vect USART_RXC_vect
|
|
#define D_USART0_TX_vect USART_TXC_vect
|
|
#endif
|
|
|
|
#elif defined (__AVR_ATmega644__)
|
|
#ifndef NUMPORTS
|
|
#define NUMPORTS 1
|
|
#elif NUMPORTS > 1
|
|
#error Only one serial port is defined for this processor!
|
|
#endif
|
|
|
|
#if NUMPORTS > 0
|
|
#define D_UDR0 UDR0
|
|
#define D_UDRE0M (1 << UDRE0)
|
|
#define D_UBRR0H UBRR0H
|
|
#define D_UBRR0L UBRR0L
|
|
#define D_UCSR0A UCSR0A
|
|
#define D_UCSR0B UCSR0B
|
|
#define D_UCSR0C UCSR0C
|
|
#define D_USART0_RX_vect USART0_RX_vect
|
|
#define D_USART0_TX_vect USART0_TX_vect
|
|
#endif
|
|
|
|
#else
|
|
#error Please define the UART registers for your MCU!
|
|
#endif
|
|
|
|
#if NUMPORTS > 0
|
|
int (* input_handler_0)(unsigned char);
|
|
ISR(D_USART0_RX_vect)
|
|
{
|
|
unsigned char c;
|
|
c = D_UDR0;
|
|
if (input_handler_0 != NULL) input_handler_0(c);
|
|
}
|
|
#if RS232_TX_INTERRUPTS
|
|
volatile uint8_t txwait_0;
|
|
ISR(D_USART0_TX_vect)
|
|
{
|
|
txwait_0 = 0;
|
|
}
|
|
#endif
|
|
|
|
#if NUMPORTS > 1
|
|
int (* input_handler_1)(unsigned char);
|
|
ISR(D_USART1_RX_vect)
|
|
{
|
|
unsigned char c;
|
|
c = D_UDR1;
|
|
if (input_handler_1 != NULL) input_handler_1(c);
|
|
}
|
|
#if RS232_TX_INTERRUPTS
|
|
volatile uint8_t txwait_1;
|
|
ISR(USART1_TX_vect)
|
|
{
|
|
txwait_1 = 0;
|
|
}
|
|
#endif
|
|
|
|
#if NUMPORTS > 2
|
|
int (* input_handler_2)(unsigned char);
|
|
ISR(D_USART2_RX_vect)
|
|
{
|
|
unsigned char c;
|
|
c = D_UDR2;
|
|
if (input_handler_2 != NULL) input_handler_2(c);
|
|
}
|
|
#if RS232_TX_INTERRUPTS
|
|
volatile uint8_t txwait_2;
|
|
ISR(USART2_TX_vect)
|
|
{
|
|
txwait_2= 0;
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
#endif
|
|
#endif
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
rs232_init (uint8_t port, uint8_t bd, uint8_t ffmt)
|
|
{
|
|
#if NUMPORTS > 0
|
|
if (port == 0) {
|
|
D_UBRR0H = (uint8_t)(bd>>8);
|
|
D_UBRR0L = (uint8_t)bd;
|
|
#if RS232_TX_INTERRUPTS
|
|
txwait_0 = 0;
|
|
D_UCSR0B = USART_INTERRUPT_RX_COMPLETE | USART_INTERRUPT_TX_COMPLETE | \
|
|
USART_RECEIVER_ENABLE | USART_TRANSMITTER_ENABLE;
|
|
#else
|
|
D_UCSR0B = USART_INTERRUPT_RX_COMPLETE | \
|
|
USART_RECEIVER_ENABLE | USART_TRANSMITTER_ENABLE;
|
|
#endif
|
|
D_UCSR0C = USART_UCSRC_SEL | ffmt;
|
|
input_handler_0 = NULL;
|
|
|
|
#if NUMPORTS > 1
|
|
} else if (port == 1) {
|
|
D_UBRR1H = (uint8_t)(bd>>8);
|
|
D_UBRR1L = (uint8_t)bd;
|
|
#if RS232_TX_INTERRUPTS
|
|
txwait_1 = 0;
|
|
D_UCSR1B = USART_INTERRUPT_RX_COMPLETE | USART_INTERRUPT_TX_COMPLETE | \
|
|
USART_RECEIVER_ENABLE | USART_TRANSMITTER_ENABLE;
|
|
#else
|
|
D_UCSR1B = USART_INTERRUPT_RX_COMPLETE | \
|
|
USART_RECEIVER_ENABLE | USART_TRANSMITTER_ENABLE;
|
|
#endif
|
|
D_UCSR1C = USART_UCSRC_SEL | ffmt;
|
|
input_handler_1 = NULL;
|
|
|
|
#if NUMPORTS > 2
|
|
} else if (port == 2) {
|
|
D_UBRR2H = (uint8_t)(bd>>8);
|
|
D_UBRR2L = (uint8_t)bd;
|
|
#if RS232_TX_INTERRUPTS
|
|
txwait_2 = 0;
|
|
D_UCSR2B = USART_INTERRUPT_RX_COMPLETE | USART_INTERRUPT_TX_COMPLETE | \
|
|
USART_RECEIVER_ENABLE | USART_TRANSMITTER_ENABLE;
|
|
#else
|
|
D_UCSR2B = USART_INTERRUPT_RX_COMPLETE | \
|
|
USART_RECEIVER_ENABLE | USART_TRANSMITTER_ENABLE;
|
|
#endif
|
|
D_UCSR2C = USART_UCSRC_SEL | ffmt;
|
|
input_handler_2 = NULL;
|
|
#endif
|
|
#endif
|
|
}
|
|
#endif /* NUMPORTS > 0 */
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
rs232_send(uint8_t port, unsigned char c)
|
|
{
|
|
#if RS232_TX_INTERRUPTS
|
|
/* Output character and block until it is transmitted */
|
|
#if NUMPORTS > 0
|
|
if (port == 0 ) {
|
|
txwait_0 = 1;
|
|
D_UDR0 = c;
|
|
while (txwait_0);
|
|
#if NUMPORTS > 1
|
|
} else if (port == 1) {
|
|
txwait_1 = 1;
|
|
D_UDR1 = c;
|
|
while (txwait_1);
|
|
#if NUMPORTS > 2
|
|
} else if (port == 2) {
|
|
txwait_2 = 1;
|
|
D_UDR2 = c;
|
|
while (txwait_2);
|
|
#endif
|
|
#endif
|
|
}
|
|
#endif
|
|
#else /* RS232_TX_INTERRUPTS */
|
|
/* Block until tx ready and output character */
|
|
#if NUMPORTS > 0
|
|
if (port == 0 ) {
|
|
while (!(D_UCSR0A & D_UDRE0M));
|
|
D_UDR0 = c;
|
|
#if NUMPORTS > 1
|
|
} else if (port == 1) {
|
|
while (!(D_UCSR1A & D_UDRE1M));
|
|
D_UDR1 = c;
|
|
#if NUMPORTS > 2
|
|
} else if (port == 2) {
|
|
while (!(D_UCSR2A & D_UDRE2M));
|
|
D_UDR2 = c;
|
|
#endif
|
|
#endif
|
|
}
|
|
#endif
|
|
#endif /* RS232_TX_INTERRUPTS */
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
rs232_set_input(uint8_t port, int (*f)(unsigned char))
|
|
{
|
|
#if NUMPORTS > 0
|
|
if (port == 0) {
|
|
input_handler_0 = f;
|
|
#if NUMPORTS > 1
|
|
} else if (port == 1) {
|
|
input_handler_1 = f;
|
|
#if NUMPORTS > 2
|
|
} else if (port == 2) {
|
|
input_handler_2 = f;
|
|
#endif
|
|
#endif
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
rs232_print(uint8_t port, char *buf)
|
|
{
|
|
while(*buf) {
|
|
#if ADD_CARRIAGE_RETURN_AFTER_NEWLINE
|
|
if(*buf=='\n') rs232_send(port, '\r');
|
|
if(*buf=='\r') buf++; else rs232_send(port, *buf++);
|
|
#else
|
|
rs232_send(port, *buf++);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
#if RS232_PRINTF_BUFFER_LENGTH
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
rs232_printf(uint8_t port, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
static char buf[RS232_PRINTF_BUFFER_LENGTH];
|
|
|
|
va_start (ap, fmt);
|
|
vsnprintf (buf, RS232_PRINTF_BUFFER_LENGTH, fmt, ap);
|
|
va_end(ap);
|
|
|
|
rs232_print (port, buf);
|
|
}
|
|
#endif
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
slip_arch_writeb(unsigned char c)
|
|
{
|
|
rs232_send(SLIP_PORT, c);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
int rs232_stdout_putchar(char c, FILE *stream);
|
|
static uint8_t stdout_rs232_port=RS232_PORT_0;
|
|
static FILE rs232_stdout = FDEV_SETUP_STREAM(rs232_stdout_putchar,
|
|
NULL,
|
|
_FDEV_SETUP_WRITE);
|
|
|
|
int rs232_stdout_putchar(char c, FILE *stream)
|
|
{
|
|
#if ADD_CARRIAGE_RETURN_AFTER_NEWLINE
|
|
if(c=='\n') rs232_send(stdout_rs232_port, '\r');
|
|
if(c!='\r') rs232_send (stdout_rs232_port, c);
|
|
#else
|
|
rs232_send (stdout_rs232_port, c);
|
|
#endif
|
|
return 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void rs232_redirect_stdout (uint8_t port) {
|
|
stdout_rs232_port = port;
|
|
stdout = &rs232_stdout;
|
|
}
|