driver_sgp41_basic.c

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#include "driver_sgp41_basic.h"
#include "driver_sgp41_algorithm.h"
 
static sgp41_handle_t gs_handle;                         
static sgp41_gas_index_algorithm_t gs_voc_handle;        
static sgp41_gas_index_algorithm_t gs_nox_handle;        

uint8_t sgp41_basic_init(void)
{
    uint8_t res;
 
    /* link functions */
    DRIVER_SGP41_LINK_INIT(&gs_handle, sgp41_handle_t);
    DRIVER_SGP41_LINK_IIC_INIT(&gs_handle, sgp41_interface_iic_init);
    DRIVER_SGP41_LINK_IIC_DEINIT(&gs_handle, sgp41_interface_iic_deinit);
    DRIVER_SGP41_LINK_IIC_WRITE_COMMAND(&gs_handle, sgp41_interface_iic_write_cmd);
    DRIVER_SGP41_LINK_IIC_READ_COMMAND(&gs_handle, sgp41_interface_iic_read_cmd);
    DRIVER_SGP41_LINK_DELAY_MS(&gs_handle, sgp41_interface_delay_ms);
    DRIVER_SGP41_LINK_DEBUG_PRINT(&gs_handle, sgp41_interface_debug_print);
 
    /* sgp41 init */
    res = sgp41_init(&gs_handle);
    if (res != 0)
    {
        sgp41_interface_debug_print("sgp41: init failed.\n");
 
        return 1;
    }
 
    /* soft reset */
    res = sgp41_soft_reset(&gs_handle);
    if (res != 0)
    {
        sgp41_interface_debug_print("sgp41: soft failed.\n");
        (void)sgp41_deinit(&gs_handle);
 
        return 1;
    }
 
    /* voc algorithm init */
    sgp41_algorithm_init(&gs_voc_handle, SGP41_ALGORITHM_TYPE_VOC);
 
    /* nox algorithm init */
    sgp41_algorithm_init(&gs_nox_handle, SGP41_ALGORITHM_TYPE_NOX);
 
    return 0;
}

uint8_t sgp41_basic_deinit(void)
{
    /* close sgp41 */
    if (sgp41_deinit(&gs_handle) != 0)
    {
        return 1;
    }
 
    return 0;
}

uint8_t sgp41_basic_read(float temperature, float humidity, int32_t *voc_gas_index, int32_t *nox_gas_index)
{
    uint8_t res;
    uint16_t raw_humidity;
    uint16_t raw_temperature;
    uint16_t sraw_voc;
    uint16_t sraw_nox;
 
    /* humidity convert to register */
    res = sgp41_humidity_convert_to_register(&gs_handle, humidity, &raw_humidity);
    if (res != 0)
    {
        sgp41_interface_debug_print("sgp41: humidity convert to register failed.\n");
 
        return 1;
    }
 
    /* temperature convert to register */
    res = sgp41_temperature_convert_to_register(&gs_handle, temperature, &raw_temperature);
    if (res != 0)
    {
        sgp41_interface_debug_print("sgp41: temperature convert to register failed.\n");
 
        return 1;
    }
 
    /* get measure raw */
    res = sgp41_get_measure_raw(&gs_handle, raw_humidity, raw_temperature, &sraw_voc, &sraw_nox);
    if (res != 0)
    {
        sgp41_interface_debug_print("sgp41: get measure raw failed.\n");
 
        return 1;
    }
 
    /* algorithm process */
    sgp41_algorithm_process(&gs_voc_handle, sraw_voc, voc_gas_index);
 
    /* algorithm process */
    sgp41_algorithm_process(&gs_nox_handle, sraw_nox, nox_gas_index);
 
    return 0;
}

uint8_t sgp41_basic_read_without_compensation(int32_t *voc_gas_index, int32_t *nox_gas_index)
{
    uint8_t res;
    uint16_t sraw_voc;
    uint16_t sraw_nox;
 
    /* get measure raw */
    res = sgp41_get_measure_raw_without_compensation(&gs_handle, &sraw_voc, &sraw_nox);
    if (res != 0)
    {
        sgp41_interface_debug_print("sgp41: get measure raw without compensation failed.\n");
 
        return 1;
    }
 
    /* algorithm process */
    sgp41_algorithm_process(&gs_voc_handle, sraw_voc, voc_gas_index);
 
    /* algorithm process */
    sgp41_algorithm_process(&gs_nox_handle, sraw_nox, nox_gas_index);
 
    return 0;
}

uint8_t sgp41_basic_get_serial_id(uint16_t id[3])
{
    uint8_t res;
 
    /* get serial id */
    res = sgp41_get_serial_id(&gs_handle, id);
    if (res != 0)
    {
        sgp41_interface_debug_print("sgp41: get serial id failed.\n");
 
        return 1;
    }
 
    return 0;
}