From b0cd207694674c5509932e3fd1d286f5d4d98780 Mon Sep 17 00:00:00 2001 From: Bernhard Tittelbach Date: Thu, 10 Oct 2013 23:41:05 +0000 Subject: OpenPCR-controller git-svn-id: https://svn.spreadspace.org/avr/trunk@238 aa12f405-d877-488e-9caf-2d797e2a1cc7 --- pcr-controller/pcr-controller.c | 219 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 219 insertions(+) create mode 100644 pcr-controller/pcr-controller.c (limited to 'pcr-controller/pcr-controller.c') diff --git a/pcr-controller/pcr-controller.c b/pcr-controller/pcr-controller.c new file mode 100644 index 0000000..583d054 --- /dev/null +++ b/pcr-controller/pcr-controller.c @@ -0,0 +1,219 @@ +/* + * OpenPCR Teensy Controller Code + * + * + * Copyright (C) 2013 Bernhard Tittelbach +* uses avr-utils, anyio & co by Christian Pointner + * + * This file is part of spreadspace avr utils. + * + * spreadspace avr utils 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 + * any later version. + * + * spreadspace avr utils 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 spreadspace avr utils. If not, see . + */ + + +#include +#include +#include +#include +#include +#include + +#include "util.h" +#include "led.h" +#include "anyio.h" + +#include "onewire.h" +#include "ds1820.h" + +#include "pwm.h" + +#define PIN_HIGH(PORT, PIN) PORT |= (1 << PIN) +#define PIN_LOW(PORT, PIN) PORT &= ~(1 << PIN) +#define PINMODE_OUTPUT PIN_HIGH //just use DDR instead of PORT +#define PINMODE_INPUT PIN_LOW //just use DDR instead of PORT + +#define OP_SETBIT |= +#define OP_CLEARBIT &= ~ +#define OP_CHECK & +#define PIN_SW(PORTDDRREG, PIN, OP) PORTDDRREG OP (1 << PIN) + +#define HIGHv OP_SETBIT +#define LOWv OP_CLEARBIT + +#define PUMP_PIN PINB3 +#define PELTIER_INA PINF7 +#define PELTIER_INB PINB6 +#define PELETIER_PWM_EN PINB5 +#define TOPHEAT_PIN PIND7 + + + +uint8_t num_temp_sensors_ = 0; +uint16_t raw_temp_ = 0; +uint16_t target_temp_ = 0; +uint16_t pid_p_ = 0; +uint16_t pid_i_ = 0; +uint16_t pid_d_ = 0; +uint16_t pid_err_ = 0; + +void queryAndSaveTemperature(uint8_t bit_resolution) +{ + uint8_t sensor_index = 0; + + if (num_temp_sensors_ == 0) + { + num_temp_sensors_ = ds1820_discover(); + } + + for (sensor_index=0; sensor_index < num_temp_sensors_; sensor_index++) + { + ds1820_set_resolution(sensor_index, bit_resolution); + ds1820_start_measuring(sensor_index); + } + + ds1820_wait_conversion_time(bit_resolution); + + for (sensor_index=0; sensor_index < num_temp_sensors_; sensor_index++) + { + raw_temp_ = ds1820_read_temperature(sensor_index); + if (raw_temp_ != DS1820_ERROR) + { + break; //we need only one successfully read value + } + } +} + +void printRawTemp(int16_t raw_temp) +{ + printf("%d.%02d", raw_temp / 16, 100 * (raw_temp % 16) / 16); +} + +void printTemperature(void) +{ + if (num_temp_sensors_ == 0) + { + printf("ERROR: No DS1820 sensors on 1wire bus, thus no temperature\r\n"); + return; + } + if (raw_temp_ == DS1820_ERROR) + { + printf("ERROR talking to DS18b20, no valid temperature!\r\n"); + } else { + printf("Temp: "); + printRawTemp(raw_temp_); + printf("\r\n"); + } +} + +void readIntoBuffer(char *buffer, uint8_t buflen) +{ + while (anyio_bytes_received() == 0); + int ReceivedByte=0; + do { + ReceivedByte = fgetc(stdin); + if (ReceivedByte != EOF) + { + *buffer = (char) ReceivedByte; + buffer++; + buflen --; + } + } while (ReceivedByte != '\n' && ReceivedByte != '\r' && buflen > 1); + *buffer = 0; +} + +int16_t readNumber(void) +{ + char buffer[20]; + readIntoBuffer(buffer, 20); + return atoi(buffer); +} + +void handle_cmd(uint8_t cmd) +{ + switch(cmd) { + case ' ': + case '\n': + case '\r': + return; + case 'R': + case 'r': reset2bootloader(); break; + case 's': printTemperature(); return; + case 'L': led_toggle(); break; + case 't': + printf("TargetTemp: "); + printRawTemp(target_temp_); + printf("\r\n"); + return; + case 'p': + case 'i': + case 'd': + printf("PID P: %d\r\nPID I: %d\r\nPID D: %d\r\n", pid_p_, pid_i_, pid_d_); + return; + case 'T': target_temp_ = readNumber(); break; + case 'P': pid_p_ = readNumber(); break; + case 'I': pid_i_ = readNumber(); break; + case 'D': pid_d_ = readNumber(); pwm_set((uint8_t) pid_d_); break; + case 'A': PIN_HIGH(PORTB, PUMP_PIN); break; + case 'a': PIN_LOW(PORTB, PUMP_PIN); break; + case 'B': PIN_HIGH(PORTD, TOPHEAT_PIN); break; + case 'b': PIN_LOW(PORTD, TOPHEAT_PIN); break; + default: printf("ERROR\r\n"); return; + } + printf("OK\r\n"); +} + +int main(void) +{ + /* Disable watchdog if enabled by bootloader/fuses */ + MCUSR &= ~(1 << WDRF); + wdt_disable(); + + cpu_init(); + led_init(); + anyio_init(115200, 0); + sei(); + + led_off(); + owi_init(PINC7, &PINC); + PINMODE_OUTPUT(DDRB, PUMP_PIN); + PIN_LOW(PORTB, PUMP_PIN); + PINMODE_OUTPUT(DDRB, PELETIER_PWM_EN); + PINMODE_OUTPUT(DDRB, PELTIER_INB); + PINMODE_OUTPUT(DDRF, PELTIER_INA); + PINMODE_OUTPUT(DDRD, TOPHEAT_PIN); + + pwm_init(); + + num_temp_sensors_ = ds1820_discover(); + + for(;;) + { + int16_t BytesReceived = anyio_bytes_received(); + while(BytesReceived > 0) + { + int ReceivedByte = fgetc(stdin); + if (ReceivedByte != EOF) + { + handle_cmd(ReceivedByte); + } + BytesReceived--; + } + + queryAndSaveTemperature(11); + + // PID control + + anyio_task(); + } +} -- cgit v1.2.3