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Hi, I try to risolve the problem of adaptation of common.c files. Now there is something that works but not correctly. In the main code, first I search if there are some connected devices through I2C (and I find that there is a device at 0x76, which is the BME688), then I try to use the forced mode configuration example, but here there is the problem. I attach here the output. //OUTPUT OF THE PROGRAM Starting the program TWI device detected at address 0x76.     //(TWI is equivalent to I2C) So the sensor is correctly connected INIZIO BME I2C Interface API name [bme68x_init] Error [-3] : Device not found API name [bme68x_set_conf]: Tutto ok API name [bme68x_set_heatr_conf]: Tutto ok API name [bme68x_set_op_mode]: Tutto ok API name [bme68x_get_data]: Tutto ok Getting data correctly Printing resultsstatus: 128 Gas index: 0 Meas index: 0 Res heat: 128 Current DAC: 0 Gas wait period: 0 Temperatura: 0.80 °C Pressione: -1290.20 Pa Umidita': 0.0 Gas resistance: 5070.0 O API name [bme68x_set_op_mode]: Tutto ok API name [bme68x_get_data] Warning [2] : No new data found API name [bme68x_set_op_mode]: Tutto ok API name [bme68x_get_data]: Tutto ok Getting data correctly Printing resultsstatus: 128 Gas index: 10 Meas index: 22 Res heat: 64 Current DAC: 0 Gas wait period: 128 Temperatura: 0.33 °C Pressione: 23550.48 Pa Umidita': 0.0 Gas resistance: 14202.64   I do not understand. The sensor is correctly connected, otherwise the microcontroller would not find anything at the adress 0x76. But then when I try to initialize the sensor, it returns that the device is not found, but after it looks like as the sensor is connected and it says if it has new datas or no, and in case it sends datas (however, the datas that are sent are obviously wrong!). I do not understand where the problem is. Thanks for the help ... View more

Hi, I have the same problem. I'm tring to adapt the common.c file to my microcontroller (I'm using nRF52832 from Nordic) but I have some problems. Where can I fine the example code which contains the implementation of I2C interface function on STM32? Thanks for helping ... View more

Hi, Thanks again for your help. I try to modify the common.c file to adapt to my microcontroller. I would like to ask you if the structure is correct (not the single function on the code but the general struscture), because when I built the program I have no problem, but then the code returns error. In particular, init_interface function works correctly, but then init funcrion, set_config function ecc return error -2: communication error   static const nrf_drv_twi_t i2c_instance = NRF_DRV_TWI_INSTANCE(0); BME68X_INTF_RET_TYPE bme68x_i2c_read(uint8_t reg_addr, uint8_t *reg_data, uint32_t len, void *intf_ptr) { int8_t err = nrf_drv_twi_rx(&i2c_instance, reg_addr, reg_data, len); return err; } BME68X_INTF_RET_TYPE bme68x_i2c_write(uint8_t reg_addr, const uint8_t *reg_data, uint32_t len, void *intf_ptr) { int8_t err = nrf_drv_twi_tx(&i2c_instance, reg_addr, reg_data, len, false); return err; } void bme68x_delay_us(uint32_t period, void *intf_ptr) { nrf_delay_us(period); } int8_t bme68x_interface_init(struct bme68x_dev *bme, uint8_t intf) { int8_t rslt = BME68X_OK; uint8_t reg_addr; const uint8_t *reg_data; uint32_t len; void *intf_ptr; if (bme != NULL) { /* Bus configuration : I2C */ if (intf == BME68X_I2C_INTF) { printf("I2C Interface\n"); dev_addr = BME68X_I2C_ADDR_LOW; bme->read = bme68x_i2c_read; bme->write = bme68x_i2c_write; bme->intf = BME68X_I2C_INTF; //here I initialize the I2c component const nrf_drv_twi_config_t i2c_instance_config = { .scl = SCL_PIN, .sda = SDA_PIN, .frequency = NRF_TWI_FREQ_100K, .interrupt_priority = 0}; rslt = nrf_drv_twi_init(&i2c_instance, &i2c_instance_config, NULL, NULL); if (rslt) { printf("Error %d: Initialization of I2C connection failed!\n", rslt); } //enable I2c instance nrf_drv_twi_enable(&i2c_instance); } bme->delay_us = bme68x_delay_us; bme->intf_ptr = &dev_addr; bme->amb_temp = 25; /* The ambient temperature in deg C is used for defining the heater temperature */ } else { rslt = BME68X_E_NULL_PTR; } return rslt; }     Thanks again ... View more

Thanks again for the answer. I have a last (I hope) question. I was looking the API code and I saw that a lot of functions refer to SPI comunication (for example in get_regs function there is a mask called BME68X_SPI_RD_MSK even though in the previous if the condition is I2C interface). I use I2C comunication, does it create a problem? Thanks again ... View more

Thanks for helping. Now I try to adapt the code. One further question. If I have already initialized the I2C communication in my project (I use it with other sensors), does I need to use this command  coines_config_i2c_bus(COINES_I2C_BUS_0, COINES_I2C_STANDARD_MODE); or can I avoid it? ... View more