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sgp41_i2c.c
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sgp41_i2c.c
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/*
* THIS FILE IS AUTOMATICALLY GENERATED
*
* I2C-Generator: 0.3.0
* Yaml Version: 0.1.0
* Template Version: 0.7.0-62-g3d691f9
*/
/*
* Copyright (c) 2021, Sensirion AG
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of Sensirion AG nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "sgp41_i2c.h"
#include "sensirion_common.h"
#include "sensirion_i2c.h"
#include "sensirion_i2c_hal.h"
#define SGP41_I2C_ADDRESS 0x59
int16_t sgp41_execute_conditioning(uint16_t default_rh, uint16_t default_t,
uint16_t* sraw_voc) {
int16_t error;
uint8_t buffer[8];
uint16_t offset = 0;
offset = sensirion_i2c_add_command_to_buffer(&buffer[0], offset, 0x2612);
offset =
sensirion_i2c_add_uint16_t_to_buffer(&buffer[0], offset, default_rh);
offset =
sensirion_i2c_add_uint16_t_to_buffer(&buffer[0], offset, default_t);
error = sensirion_i2c_write_data(SGP41_I2C_ADDRESS, &buffer[0], offset);
if (error) {
return error;
}
sensirion_i2c_hal_sleep_usec(50000);
error = sensirion_i2c_read_data_inplace(SGP41_I2C_ADDRESS, &buffer[0], 2);
if (error) {
return error;
}
*sraw_voc = sensirion_common_bytes_to_uint16_t(&buffer[0]);
return NO_ERROR;
}
int16_t sgp41_measure_raw_signals(uint16_t relative_humidity,
uint16_t temperature, uint16_t* sraw_voc,
uint16_t* sraw_nox) {
int16_t error;
uint8_t buffer[8];
uint16_t offset = 0;
offset = sensirion_i2c_add_command_to_buffer(&buffer[0], offset, 0x2619);
offset = sensirion_i2c_add_uint16_t_to_buffer(&buffer[0], offset,
relative_humidity);
offset =
sensirion_i2c_add_uint16_t_to_buffer(&buffer[0], offset, temperature);
error = sensirion_i2c_write_data(SGP41_I2C_ADDRESS, &buffer[0], offset);
if (error) {
return error;
}
sensirion_i2c_hal_sleep_usec(50000);
error = sensirion_i2c_read_data_inplace(SGP41_I2C_ADDRESS, &buffer[0], 4);
if (error) {
return error;
}
*sraw_voc = sensirion_common_bytes_to_uint16_t(&buffer[0]);
*sraw_nox = sensirion_common_bytes_to_uint16_t(&buffer[2]);
return NO_ERROR;
}
int16_t sgp41_execute_self_test(uint16_t* test_result) {
int16_t error;
uint8_t buffer[3];
uint16_t offset = 0;
offset = sensirion_i2c_add_command_to_buffer(&buffer[0], offset, 0x280E);
error = sensirion_i2c_write_data(SGP41_I2C_ADDRESS, &buffer[0], offset);
if (error) {
return error;
}
sensirion_i2c_hal_sleep_usec(320000);
error = sensirion_i2c_read_data_inplace(SGP41_I2C_ADDRESS, &buffer[0], 2);
if (error) {
return error;
}
*test_result = sensirion_common_bytes_to_uint16_t(&buffer[0]);
return NO_ERROR;
}
int16_t sgp41_turn_heater_off(void) {
int16_t error;
uint8_t buffer[2];
uint16_t offset = 0;
offset = sensirion_i2c_add_command_to_buffer(&buffer[0], offset, 0x3615);
error = sensirion_i2c_write_data(SGP41_I2C_ADDRESS, &buffer[0], offset);
if (error) {
return error;
}
sensirion_i2c_hal_sleep_usec(1000);
return NO_ERROR;
}
int16_t sgp41_get_serial_number(uint16_t* serial_number) {
int16_t error;
uint8_t buffer[9];
uint16_t offset = 0;
offset = sensirion_i2c_add_command_to_buffer(&buffer[0], offset, 0x3682);
error = sensirion_i2c_write_data(SGP41_I2C_ADDRESS, &buffer[0], offset);
if (error) {
return error;
}
sensirion_i2c_hal_sleep_usec(1000);
error = sensirion_i2c_read_data_inplace(SGP41_I2C_ADDRESS, &buffer[0], 6);
if (error) {
return error;
}
serial_number[0] = sensirion_common_bytes_to_uint16_t(&buffer[0]);
serial_number[1] = sensirion_common_bytes_to_uint16_t(&buffer[2]);
serial_number[2] = sensirion_common_bytes_to_uint16_t(&buffer[4]);
return NO_ERROR;
}