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https://github.com/Next-Flip/Momentum-Firmware.git
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Move plugins to external folder
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87
applications/external/unitemp/sensors/LM75.c
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87
applications/external/unitemp/sensors/LM75.c
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/*
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Unitemp - Universal temperature reader
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Copyright (C) 2022-2023 Victor Nikitchuk (https://github.com/quen0n)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "LM75.h"
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#include "../interfaces/I2CSensor.h"
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#define LM75_REG_TEMP 0x00
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#define LM75_REG_CONFIG 0x01
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#define LM75_REG_THYST 0x02
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#define LM75_REG_TOS 0x03
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#define LM75_CONFIG_SHUTDOWN 0b00000001
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#define LM75_CONFIG_INTERRUPT 0b00000010
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#define LM75_CONFIG_OSPOLARITY_HIGH 0b00000100
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#define LM75_CONFIG_FAULTQUEUE_1 0b00000000
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#define LM75_CONFIG_FAULTQUEUE_2 0b00001000
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#define LM75_CONFIG_FAULTQUEUE_4 0b00010000
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#define LM75_CONFIG_FAULTQUEUE_6 0b00011000
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const SensorType LM75 = {
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.typename = "LM75",
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.interface = &I2C,
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.datatype = UT_DATA_TYPE_TEMP,
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.pollingInterval = 500,
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.allocator = unitemp_LM75_alloc,
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.mem_releaser = unitemp_LM75_free,
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.initializer = unitemp_LM75_init,
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.deinitializer = unitemp_LM75_deinit,
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.updater = unitemp_LM75_update};
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bool unitemp_LM75_alloc(Sensor* sensor, char* args) {
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UNUSED(args);
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I2CSensor* i2c_sensor = (I2CSensor*)sensor->instance;
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//Адреса на шине I2C (7 бит)
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i2c_sensor->minI2CAdr = 0b1001000 << 1;
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i2c_sensor->maxI2CAdr = 0b1001111 << 1;
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return true;
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}
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bool unitemp_LM75_free(Sensor* sensor) {
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//Нечего высвобождать, так как ничего не было выделено
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UNUSED(sensor);
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return true;
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}
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bool unitemp_LM75_init(Sensor* sensor) {
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I2CSensor* i2c_sensor = (I2CSensor*)sensor->instance;
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//Выход если не удалось записать значение в датчик
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if(!unitemp_i2c_writeReg(i2c_sensor, LM75_REG_CONFIG, LM75_CONFIG_FAULTQUEUE_1)) return false;
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return true;
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}
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bool unitemp_LM75_deinit(Sensor* sensor) {
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I2CSensor* i2c_sensor = (I2CSensor*)sensor->instance;
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if(!unitemp_i2c_writeReg(
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i2c_sensor, LM75_REG_CONFIG, LM75_CONFIG_FAULTQUEUE_1 | LM75_CONFIG_SHUTDOWN))
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return false;
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return true;
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}
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UnitempStatus unitemp_LM75_update(Sensor* sensor) {
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I2CSensor* i2c_sensor = (I2CSensor*)sensor->instance;
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uint8_t buff[2];
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if(!unitemp_i2c_readRegArray(i2c_sensor, LM75_REG_TEMP, 2, buff))
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return UT_SENSORSTATUS_TIMEOUT;
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int16_t raw = (((uint16_t)buff[0] << 8) | buff[1]);
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sensor->temp = raw / 32 * 0.125;
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return UT_SENSORSTATUS_OK;
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}
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