Resolved! I don't understand how to use the HAL_I2C_Master_Transmit function. RTC DS3231
I am using I2C to transfer data from STM32F4 to DS3231 Real Time Clock registers.HAL_I2C_Master_Transmit(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout)*hi2c - I2C structureDevAddress - Device address*pD...