mirror of
https://github.com/DarkFlippers/unleashed-firmware
synced 2024-11-28 07:20:29 +00:00
81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/*
|
|
Unitemp - Universal temperature reader
|
|
Copyright (C) 2022-2023 Victor Nikitchuk (https://github.com/quen0n)
|
|
|
|
This program 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
|
|
(at your option) any later version.
|
|
|
|
This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
#include "MAX6675.h"
|
|
|
|
const SensorType MAX6675 = {
|
|
.typename = "MAX6675",
|
|
.altname = "MAX6675 (Thermocouple)",
|
|
.interface = &SPI,
|
|
.datatype = UT_TEMPERATURE,
|
|
.pollingInterval = 500,
|
|
.allocator = unitemp_MAX6675_alloc,
|
|
.mem_releaser = unitemp_MAX6675_free,
|
|
.initializer = unitemp_MAX6675_init,
|
|
.deinitializer = unitemp_MAX6675_deinit,
|
|
.updater = unitemp_MAX6675_update};
|
|
|
|
bool unitemp_MAX6675_alloc(Sensor* sensor, char* args) {
|
|
UNUSED(sensor);
|
|
UNUSED(args);
|
|
return true;
|
|
}
|
|
|
|
bool unitemp_MAX6675_free(Sensor* sensor) {
|
|
UNUSED(sensor);
|
|
return true;
|
|
}
|
|
|
|
bool unitemp_MAX6675_init(Sensor* sensor) {
|
|
SPISensor* instance = sensor->instance;
|
|
furi_hal_spi_bus_handle_init(instance->spi);
|
|
UNUSED(instance);
|
|
return true;
|
|
}
|
|
|
|
bool unitemp_MAX6675_deinit(Sensor* sensor) {
|
|
UNUSED(sensor);
|
|
return true;
|
|
}
|
|
|
|
UnitempStatus unitemp_MAX6675_update(Sensor* sensor) {
|
|
SPISensor* instance = sensor->instance;
|
|
|
|
furi_hal_spi_acquire(instance->spi);
|
|
furi_hal_gpio_write(instance->CS_pin->pin, false);
|
|
|
|
uint8_t buff[2] = {0};
|
|
|
|
furi_hal_spi_bus_rx(instance->spi, buff, 2, 0xFF);
|
|
furi_hal_spi_release(instance->spi);
|
|
|
|
uint32_t raw = (buff[0] << 8) | buff[1];
|
|
|
|
if(raw == 0xFFFFFFFF || raw == 0) return UT_SENSORSTATUS_TIMEOUT;
|
|
|
|
//Определение состояния термопары
|
|
uint8_t state = raw & 0b100;
|
|
//Обрыв
|
|
if(state == 0b100) {
|
|
UNITEMP_DEBUG("%s has thermocouple open circuit", sensor->name);
|
|
return UT_SENSORSTATUS_ERROR;
|
|
}
|
|
|
|
sensor->temp = (int16_t)(raw) / 32.0f;
|
|
|
|
return UT_SENSORSTATUS_OK;
|
|
}
|