esp-idf-bmx280/examples/bmx280_example_without_i2c_master.c

#include "esp_log.h"
#include "bmx280.h"

#define BMX280_SDA_NUM GPIO_NUM_13
#define BMX280_SCL_NUM GPIO_NUM_14

void app_main(void)
{
    // Entry Point
    //ESP_ERROR_CHECK(nvs_flash_init());
    i2c_config_t i2c_cfg = {
        .mode = I2C_MODE_MASTER,
        .sda_io_num = BMX280_SDA_NUM,
        .scl_io_num = BMX280_SCL_NUM,
        .sda_pullup_en = false,
        .scl_pullup_en = false,

        .master = {
            .clk_speed = CONFIG_BMX280_I2C_CLK_SPEED_HZ
        }
    };

    ESP_ERROR_CHECK(i2c_param_config(I2C_NUM_0, &i2c_cfg));
    ESP_ERROR_CHECK(i2c_driver_install(I2C_NUM_0, I2C_MODE_MASTER, 0, 0, 0));

    bmx280_t* bmx280 = bmx280_create(I2C_NUM_0);

    if (!bmx280) { 
        ESP_LOGE("test", "Could not create bmx280 driver.");
        return;
    }

    ESP_ERROR_CHECK(bmx280_init(bmx280));

    bmx280_config_t bmx_cfg = BMX280_DEFAULT_CONFIG;
    ESP_ERROR_CHECK(bmx280_configure(bmx280, &bmx_cfg));
    ESP_ERROR_CHECK(bmx280_setMode(bmx280, BMX280_MODE_CYCLE));
    
    float temp = 0, pres = 0, hum = 0;
    while (1)
    {
        do {
            vTaskDelay(pdMS_TO_TICKS(1));
        } while(bmx280_isSampling(bmx280));

        ESP_ERROR_CHECK(bmx280_readoutFloat(bmx280, &temp, &pres, &hum));

        ESP_LOGI("test", "Read Values: temp = %f, pres = %f, hum = %f", temp, pres, hum);
        vTaskDelay(pdMS_TO_TICKS(1000));
    }
}