About huahua

int8_t bme68x_selftest_check(const struct bme68x_dev *dev) { int8_t rslt; uint8_t n_fields; uint8_t i = 0; struct bme68x_data data[BME68X_N_MEAS] = { { 0 } }; struct bme68x_dev t_dev; struct bme68x_conf conf; struct bme68x_heatr_conf heatr_conf; struct bme68x_heatr_conf heatr_conf_check; uint8_t op_mode_check; op_mode_check=0xff; rslt = null_ptr_check(dev); if (rslt == BME68X_OK) { /* Copy required parameters from reference bme68x_dev struct */ t_dev.amb_temp = 25; t_dev.read = dev->read; t_dev.write = dev->write; t_dev.intf = dev->intf; t_dev.delay_us = dev->delay_us; t_dev.intf_ptr = dev->intf_ptr; rslt = bme68x_init(&t_dev); } if (rslt == BME68X_OK) { /* Set the temperature, pressure and humidity & filter settings */ conf.os_hum = BME68X_OS_1X; conf.os_pres = BME68X_OS_16X; conf.os_temp = BME68X_OS_2X; /* Set the remaining gas sensor settings and link the heating profile */ heatr_conf.enable = BME68X_ENABLE; heatr_conf.heatr_dur = BME68X_HEATR_DUR1; heatr_conf.heatr_temp = BME68X_HIGH_TEMP; rslt = bme68x_set_heatr_conf(BME68X_FORCED_MODE, &heatr_conf, &t_dev); if (rslt == BME68X_OK) { bme68x_get_heatr_conf(&heatr_conf_check,&t_dev); rslt = bme68x_set_conf(&conf, &t_dev); if (rslt == BME68X_OK) { rslt = bme68x_set_op_mode(BME68X_FORCED_MODE, &t_dev); /* Trigger a measurement */ if (rslt == BME68X_OK) { bme68x_get_op_mode(&op_mode_check,&t_dev); /* Wait for the measurement to complete */ t_dev.delay_us(1000000, t_dev.intf_ptr); rslt = bme68x_get_data(BME68X_FORCED_MODE, &data[0], &n_fields, &t_dev); if (rslt == BME68X_OK) { if ((data[0].idac != 0x00) && (data[0].idac != 0xFF) && (data[0].status & BME68X_GASM_VALID_MSK)) { rslt = BME68X_OK; } else { rslt = BME68X_E_SELF_TEST; } } } } } heatr_conf.heatr_dur = BME68X_HEATR_DUR2; while ((rslt == BME68X_OK) && (i < BME68X_N_MEAS)) { if (i % 2 == 0) { heatr_conf.heatr_temp = BME68X_HIGH_TEMP; /* Higher temperature */ } else { heatr_conf.heatr_temp = BME68X_LOW_TEMP; /* Lower temperature */ } rslt = bme68x_set_heatr_conf(BME68X_FORCED_MODE, &heatr_conf, &t_dev); if (rslt == BME68X_OK) { rslt = bme68x_set_conf(&conf, &t_dev); if (rslt == BME68X_OK) { rslt = bme68x_set_op_mode(BME68X_FORCED_MODE, &t_dev); /* Trigger a measurement */ if (rslt == BME68X_OK) { /* Wait for the measurement to complete */ t_dev.delay_us(BME68X_HEATR_DUR2_DELAY, t_dev.intf_ptr); rslt = bme68x_get_data(BME68X_FORCED_MODE, &data[i], &n_fields, &t_dev); } } } i++; } if (rslt == BME68X_OK) { rslt = analyze_sensor_data(data, BME68X_N_MEAS); } } return rslt; } ... View more

I tried to follow the example provided by Bosch, but the self-test still reported errors  -5   BME68X_E_SELF_TEST  . Since the self-test example provided by Bosch is based on the stm32 F4 platform, I  replaced the I2C driver code. i use the NEF52840 microcontroller. The code is as follows.Does anyone know what I did wrong? void twi_BME680_init(void) { ret_code_t err_code; const nrf_drv_twi_config_t twi_BME680_config = { .scl = TWI_BME_SCL_M, .sda = TWI_BME_SDA_M, .frequency = NRF_DRV_TWI_FREQ_100K,  .interrupt_priority = APP_IRQ_PRIORITY_HIGH, .clear_bus_init = false }; err_code = nrf_drv_twi_init(&BME680_twi, &twi_BME680_config, NULL, NULL); APP_ERROR_CHECK(err_code); nrf_drv_twi_enable(&BME680_twi); }   BME68X_INTF_RET_TYPE bme680_i2c_write(uint8_t reg_addr, const uint8_t *reg_data, uint32_t len, void *intf_ptr) { uint8_t device_addr = *(uint8_t*)intf_ptr; (void)intf_ptr; return BME680_write_byte(device_addr, reg_addr, (uint8_t *)reg_data, (uint16_t)len); } BME68X_INTF_RET_TYPE bme680_i2c_read(uint8_t reg_addr, uint8_t *reg_data, uint32_t len, void *intf_ptr) { uint8_t device_addr = *(uint8_t*)intf_ptr; (void)intf_ptr; return BME680_read_byte(device_addr, reg_addr, reg_data, (uint16_t)len); } void BME_delay_us(uint32_t period, void *intf_ptr) { (void)intf_ptr; nrf_delay_us(period); } void bme680_intf_init() { /* Initialize BME680 structure */ bme680.variant_id = BME68X_VARIANT_GAS_LOW; static Bme_addr = BME68X_I2C_ADDR_LOW;//0x76 bme680.chip_id = BME68X_CHIP_ID; bme680.read = bme680_i2c_read; bme680.write = bme680_i2c_write; bme680.intf = BME68X_I2C_INTF; bme680.delay_us = BME_delay_us; bme680.intf_ptr = &Bme_addr; bme680.amb_temp = 25; } int main(void) { twi_BME680_init();//Initializes the I2C bme680_intf_init(); rslt = bme68x_init(&bme680); /* Initialize BME680 sensor */ bme68x_check_rslt("bme68x_init", rslt); rslt =bme68x_selftest_check(&bme680); bme68x_check_rslt("bme68x_selftest_check", rslt); while(1) {} }   ... View more

Hi Rolo, I have encountered the same problem and self-test error as you, may I ask if you have solved this problem? ... View more