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sgp41_i2c_example_usage.c
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sgp41_i2c_example_usage.c
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/*
* 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 <stdio.h> // printf
#include "sensirion_common.h"
#include "sensirion_i2c_hal.h"
#include "sgp41_i2c.h"
// #include <inttypes.h>
/*
* TO USE CONSOLE OUTPUT (PRINTF) YOU MAY NEED TO ADAPT THE INCLUDE ABOVE OR
* DEFINE IT ACCORDING TO YOUR PLATFORM:
* #define printf(...)
*/
int main(void) {
int16_t error = 0;
sensirion_i2c_hal_init();
uint16_t serial_number[3];
error = sgp41_get_serial_number(serial_number);
if (error) {
printf("Error executing sgp41_get_serial_number(): %i\n", error);
} else {
// printf("Serial number: %" PRIu64 "\n",
// (((uint64_t)serial_number[0]) << 32) |
// (((uint64_t)serial_number[1]) << 16) |
// ((uint64_t)serial_number[2]));
printf("serial: 0x%04x%04x%04x\n", serial_number[0], serial_number[1],
serial_number[2]);
}
uint16_t test_result;
error = sgp41_execute_self_test(&test_result);
if (error) {
printf("Error executing sgp41_execute_self_test(): %i\n", error);
} else {
printf("Test result: %u\n", test_result);
}
// Start Measurement
// Parameters for deactivated humidity compensation:
uint16_t default_rh = 0x8000;
uint16_t default_t = 0x6666;
// sgp41 conditioning during 10 seconds before measuring
// WARNING: To avoid damage to the sensing material the conditioning must
// not exceed 10s!
for (int i = 0; i < 10; i++) {
uint16_t sraw_voc;
sensirion_i2c_hal_sleep_usec(1000000);
error = sgp41_execute_conditioning(default_rh, default_t, &sraw_voc);
if (error) {
printf("Error executing sgp41_execute_conditioning(): "
"%i\n",
error);
} else {
printf("SRAW VOC: %u\n", sraw_voc);
printf("SRAW NOx: conditioning\n");
}
}
for (int i = 0; i < 60; i++) {
uint16_t sraw_voc;
uint16_t sraw_nox;
sensirion_i2c_hal_sleep_usec(1000000);
error = sgp41_measure_raw_signals(default_rh, default_t, &sraw_voc,
&sraw_nox);
if (error) {
printf("Error executing sgp41_measure_raw_signals(): "
"%i\n",
error);
} else {
printf("SRAW VOC: %u\n", sraw_voc);
printf("SRAW NOx: %u\n", sraw_nox);
}
}
return 0;
}