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svm40_i2c_example_usage.c
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svm40_i2c_example_usage.c
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/*
* 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 "svm40_i2c.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();
uint8_t serial_number[26];
uint8_t serial_number_size = 26;
error = svm40_get_serial_number(&serial_number[0], serial_number_size);
if (error) {
printf("Error executing svm40_get_serial_number(): %i\n", error);
} else {
printf("Serial number: %s\n", serial_number);
}
uint8_t firmware_major;
uint8_t firmware_minor;
bool firmware_debug;
uint8_t hardware_major;
uint8_t hardware_minor;
uint8_t protocol_major;
uint8_t protocol_minor;
error = svm40_get_version(&firmware_major, &firmware_minor, &firmware_debug,
&hardware_major, &hardware_minor, &protocol_major,
&protocol_minor);
if (error) {
printf("Error executing svm40_get_version(): %i\n", error);
} else {
printf("Firmware: %i.%i Debug: %i\n", firmware_major, firmware_minor,
firmware_debug);
printf("Hardware: %i.%i\n", hardware_major, hardware_minor);
printf("Protocol: %i.%i\n", protocol_major, protocol_minor);
}
float t_offset;
error = svm40_get_temperature_offset_for_rht_measurements(&t_offset);
if (error) {
printf("Error executing "
"svm40_get_temperature_offset_for_rht_measurements(): %i\n",
error);
} else {
printf("Temperature Offset: %0.2f °C\n", t_offset);
}
// Start Measurement
error = svm40_start_continuous_measurement();
if (error) {
printf("Error executing svm40_start_continuous_measurement(): %i\n",
error);
}
for (;;) {
// Read Measurement
sensirion_i2c_hal_sleep_usec(1000000);
float voc_index;
float humidity;
float temperature;
error = svm40_read_measured_values(&voc_index, &humidity, &temperature);
if (error) {
printf("Error executing svm40_read_measured_values_as_integers(): "
"%i\n",
error);
} else {
printf("Voc index: %0.1f\n", voc_index);
printf("Humidity: %0.2f %%RH\n", humidity);
printf("Temperature: %0.2f °C\n", temperature);
}
}
error = svm40_stop_measurement();
if (error) {
printf("Error executing svm40_stop_measurement(): %i\n", error);
}
return 0;
}