Posted on April 10, 2018 at 12:49I DON'T KNOW ADDRESS OF M24M01-RMN6TP slave.if((HAL_I2C_Master_Transmit(&hi2c1,(devAddess),(uint8_t *)&buffer,3,100))==HAL_OK){ HAL_GPIO_TogglePin(GPIOF,GPIO_PIN_4); HAL_Delay(200);}if((HAL_I2C_Master_Receive(&hi2c1,...