For development, I am using xmegaduino, which is a port of Arduino to use with xmega processors. Since none of the board configuration files that it comes with are for an xmega A3, which is what I am using, I need to make my own. I've got it pretty much figured out, but now I have hit a wall. Serial does not work!
Serial is pretty much a required peripheral, because of its great use in debugging, and I am having a heck of a time trying to get it working. Since there is not much activity on the xmegaduino project right now, I figured I'd come to (one of) the next best places.
I'm sure the best way to ask this, but please help me get serial working. I will include the pins_arduino.h and serial_init.cpp files, but if there are other ones that need to be looked, I can post those as well.
pins_arduino.h - This has been modified from an included Sparkfun board. It had an xmega A1
Code: Select all
/*
pins_arduino.h - Pin definition functions for Arduino
Part of Arduino - http://www.arduino.cc/
Copyright (c) 2007 David A. Mellis
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or BANNED FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330,
Boston, MA 02111-1307 USA
*/
#ifndef Pins_Arduino_h
#define Pins_Arduino_h
#include <avr/pgmspace.h>
#define USE_RTC
#define REPEAT8(x) x, x, x, x, x, x, x, x
#define BV0TO7 _BV(0), _BV(1), _BV(2), _BV(3), _BV(4), _BV(5), _BV(6), _BV(7)
#define BV7TO0 _BV(7), _BV(6), _BV(5), _BV(4), _BV(3), _BV(2), _BV(1), _BV(0)
#define NUM_DIGITAL_PINS 47
#define NUM_ANALOG_INPUTS 16
#define EXTERNAL_NUM_INTERRUPTS 48
#define analogInputToDigitalPin(p) ((p < 16) ? p : -1)
#define digitalPinHasPWM(p) (((p) >= 16 && (p) <= 21) || ((p) >= 24 && (p)<= 29) || ((p) >= 32 && (p)<= 37))
static const uint8_t SS = 20;
static const uint8_t MOSI = 21;
static const uint8_t MISO = 22;
static const uint8_t SCK = 23;
static const uint8_t SS1 = 28;
static const uint8_t MOSI1 = 29;
static const uint8_t MISO1 = 30;
static const uint8_t SCK1 = 31;
//static const uint8_t SS2 = 36;
//static const uint8_t MOSI2 = 37;
//static const uint8_t MISO2 = 38;
//static const uint8_t SCK2 = 39;
//static const uint8_t SS3 = 44;
//static const uint8_t MOSI3 = 45;
//static const uint8_t MISO3 = 46;
//static const uint8_t SCK3 = 47;
static const uint8_t SDA = 16;
static const uint8_t SCL = 17;
static const uint8_t LED_BUILTIN = 13;
static const uint8_t A0 = 0;
static const uint8_t A1 = 1;
static const uint8_t A2 = 2;
static const uint8_t A3 = 3;
static const uint8_t A4 = 4;
static const uint8_t A5 = 5;
static const uint8_t A6 = 6;
static const uint8_t A7 = 7;
static const uint8_t A8 = 8;
static const uint8_t A9 = 9;
static const uint8_t A10 = 10;
static const uint8_t A11 = 11;
static const uint8_t A12 = 12;
static const uint8_t A13 = 13;
static const uint8_t A14 = 14;
static const uint8_t A15 = 15;
#define Wire xmWireC
#define Wire2 xmWireE
#define SPI_PORT SPID
#define digitalPinToPCICR(p) (((p) >= 0 && (p) <= 21) ? (&PCICR) : ((uint8_t *)0))
#define digitalPinToPCICRbit(p) (((p) <= 7) ? 2 : (((p) <= 13) ? 0 : 1))
#define digitalPinToPCMSK(p) (((p) <= 7) ? (&PCMSK2) : (((p) <= 13) ? (&PCMSK0) : (((p) <= 21) ? (&PCMSK1) : ((uint8_t *)0))))
#define digitalPinToPCMSKbit(p) (((p) <= 7) ? (p) : (((p) <= 13) ? ((p) - 8) : ((p) - 14)))
#ifdef ARDUINO_MAIN
// these arrays map port names (e.g. port B) to the
// appropriate addresses for various functions (e.g. reading
// and writing)
const uint16_t PROGMEM port_to_PGM[] = {
NOT_A_PORT,
(uint16_t) &PORTA,
(uint16_t) &PORTB,
(uint16_t) &PORTC,
(uint16_t) &PORTD,
(uint16_t) &PORTE,
//(uint16_t) &PORTF,
};
const uint8_t PROGMEM digital_pin_to_port_PGM[] = {
// PORTLIST
REPEAT8(PA), // 0 - 7
REPEAT8(PB), // 8 - 15
REPEAT8(PC), // 16 - 23
REPEAT8(PD), // 24 - 31
REPEAT8(PE), // 32 - 39
//REPEAT8(PF), // 40 - 47
//REPEAT8(PH), // 48 - 55
//REPEAT8(PJ), // 56 - 63
//REPEAT8(PK), // 64 - 71
};
const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[] = {
BV0TO7, // PORT A
BV0TO7, // PORT B
BV0TO7, // PORT C
BV0TO7, // PORT D
BV0TO7, // PORT E
//BV0TO7, // PORT F
//BV0TO7, // PORT H
//BV0TO7, // PORT J
//BV0TO7, // PORT K
};
const uint8_t PROGMEM digital_pin_to_timer_PGM[] = {
//TIMERS
//-----------------------
NOT_ON_TIMER , //PA
NOT_ON_TIMER ,
NOT_ON_TIMER ,
NOT_ON_TIMER ,
NOT_ON_TIMER ,
NOT_ON_TIMER ,
NOT_ON_TIMER ,
NOT_ON_TIMER ,
NOT_ON_TIMER , //PB
NOT_ON_TIMER ,
NOT_ON_TIMER ,
NOT_ON_TIMER ,
NOT_ON_TIMER ,
NOT_ON_TIMER ,
NOT_ON_TIMER ,
NOT_ON_TIMER ,
TIMER_C0A , //PC
TIMER_C0B ,
TIMER_C0C ,
TIMER_C0D ,
TIMER_C1A ,
TIMER_C1B ,
NOT_ON_TIMER ,
NOT_ON_TIMER ,
TIMER_D0A , //PD
TIMER_D0B ,
TIMER_D0C ,
TIMER_D0D ,
TIMER_D1A ,
TIMER_D1B ,
NOT_ON_TIMER ,
NOT_ON_TIMER ,
TIMER_E0A , //PE
TIMER_E0B ,
TIMER_E0C ,
TIMER_E0D ,
TIMER_E1A ,
TIMER_E1B ,
NOT_ON_TIMER ,
NOT_ON_TIMER ,
//TIMER_F0A , //PF
//TIMER_F0B ,
//TIMER_F0C ,
//TIMER_F0D ,
//NOT_ON_TIMER ,
//NOT_ON_TIMER ,
//NOT_ON_TIMER ,
//NOT_ON_TIMER ,
};
const TC0_t* PROGMEM timer_to_tc0_PGM[] = {
NULL,
&TCC0,
&TCC0,
&TCC0,
&TCC0,
NULL,
NULL,
&TCD0,
&TCD0,
&TCD0,
&TCD0,
NULL,
NULL,
&TCE0,
&TCE0,
&TCE0,
&TCE0,
NULL,
NULL,
//&TCF0,
//&TCF0,
//&TCF0,
//&TCF0,
//NULL,
//NULL,
};
const TC1_t* PROGMEM timer_to_tc1_PGM[] = {
NULL,
NULL,
NULL,
NULL,
NULL,
&TCC1,
&TCC1,
NULL,
NULL,
NULL,
NULL,
&TCD1,
&TCD1,
NULL,
NULL,
NULL,
NULL,
&TCE1,
&TCE1,
//NULL,
//NULL,
//NULL,
//NULL,
//NULL,
//NULL,
};
const uint8_t PROGMEM timer_to_channel_PGM[] = {
NOT_ON_TIMER,
0,
1,
2,
3,
0,
1,
0,
1,
2,
3,
0,
1,
0,
1,
2,
3,
0,
1,
};
const uint8_t PROGMEM adc_to_channel_PGM[] = {
0,
1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12,
13,
14,
15
};
#endif
#endif
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/*
serial_init.cpp - Initialize serial ports for Arduino
Part of Arduino - http://www.arduino.cc/
Copyright (c) 2011 Karl Backstroem
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or BANNED FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330,
Boston, MA 02111-1307 USA
*/
// Preinstantiate Objects //////////////////////////////////////////////////////
#define SERIAL_DEFINE(name, usart_port, port_nr) \
ring_buffer name##rx_buffer = { { 0 }, 0, 0 }; \
ISR(USART##usart_port##port_nr##_RXC_vect) \
{ \
unsigned char c = USART##usart_port##port_nr.DATA; \
store_char(c, &name##rx_buffer); \
} \
HardwareSerial name (&name##rx_buffer, &USART##usart_port##port_nr, &PORT##usart_port, (port_nr ? PIN6_bm : PIN2_bm), (port_nr ? PIN7_bm : PIN3_bm));
SERIAL_DEFINE(Serial, C, 0);
SERIAL_DEFINE(Serial1, C, 1);
SERIAL_DEFINE(Serial2, D, 0);
SERIAL_DEFINE(Serial3, D, 1);
SERIAL_DEFINE(Serial4, E, 0);