diff options
Diffstat (limited to 'usb-ajar/usb-ajar.c')
| -rw-r--r-- | usb-ajar/usb-ajar.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/usb-ajar/usb-ajar.c b/usb-ajar/usb-ajar.c new file mode 100644 index 0000000..1db377e --- /dev/null +++ b/usb-ajar/usb-ajar.c @@ -0,0 +1,177 @@ +/* + * spreadspace avr utils + * + * + * Copyright (C) 2013-2014 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); + PIN_HIGH(PORTB, PINB0); + PINMODE_INPUT(DDRB, PINB0); + PIN_LOW(PORTD, PIND7); + PINMODE_OUTPUT(DDRD, PIND7); + + owi_init(PINC4, &PINC); + + char door_ajar = 0; + char last_door_ajar = 0; + char gas_leak = 0; + char last_gas_leak = 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(); + } + } + gas_leak = ! (PINB & _BV(PINB0)); + if (gas_leak != last_gas_leak) + { + if (gas_leak) + printf("GasLeakAlert\r\n"); + last_gas_leak = gas_leak; + } + + 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)) + { + if (gas_leak) + printf("GasLeakAlert\r\n"); + ms_elapsed = 0; + tempToUSB(12); + } + } +} |