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/*
* spreadspace avr utils
*
*
* Copyright (C) 2013 Christian Pointner <equinox@spreadspace.org>
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include <avr/io.h>
#include <avr/wdt.h>
#include <util/delay.h>
#include <avr/interrupt.h>
#include <avr/power.h>
#include <stdio.h>
#include "util.h"
#include "led.h"
#include "anyio.h"
#include "onewire.h"
#include "ds1820.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
uint8_t num_temp_sensors_ = 0;
void tempToUSB(uint8_t bit_resolution)
{
uint8_t sensor_index = 0;
uint16_t raw_temp = 0;
if (num_temp_sensors_ == 0)
{
printf("No DS1820 sensors ?? running bus discovery... \r\n");
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)
{
printf("CRC comm error\r\n");
} else {
printf("temp%d: %d.%d\r\n", sensor_index +1, raw_temp / 16, 10 * (raw_temp % 16) / 16);
}
}
}
void handle_cmd(uint8_t cmd)
{
switch(cmd) {
case 'r': reset2bootloader(); break;
case '1': num_temp_sensors_ = ds1820_discover(); 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();
PIN_HIGH(PORTB, PINB1);
PINMODE_INPUT(DDRB, PINB1);
owi_init(PINC4, &PINC);
char door_ajar = 0;
char last_door_ajar = 0;
num_temp_sensors_ = ds1820_discover();
uint16_t ms_elapsed = 0;
led_off();
led2_on();
for(;;) {
int16_t BytesReceived = anyio_bytes_received();
while(BytesReceived > 0) {
int ReceivedByte = fgetc(stdin);
if(ReceivedByte != EOF) {
handle_cmd(ReceivedByte);
}
BytesReceived--;
}
door_ajar = PINB & _BV(PINB1);
if (door_ajar != last_door_ajar) {
last_door_ajar = door_ajar;
if (door_ajar) {
printf("BackdoorInfo(ajar): ajar\r\n");
led_off();
led2_on();
} else {
printf("BackdoorInfo(ajar): shut\r\n");
led_off();
led2_off();
}
}
anyio_task();
if (door_ajar) {
_delay_ms(100);
ms_elapsed += 100;
led_toggle();
led2_toggle();
} else
{
_delay_ms(1200);
ms_elapsed += 1200;
led2_toggle();
}
if (ms_elapsed & (1<<14))
{
ms_elapsed = 0;
tempToUSB(12);
}
}
}
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