for exmple, this is a part of the code:void DAC_AD5621_Write ( uint64_t DAC_Data){ HAL_GPIO_WritePin(dac_cs_GPIO_Port, dac_cs_Pin, GPIO_PIN_RESET);////Select SPI DAC_Data = (DAC_Data&0x0FFF)<<2 ; uint8_t DAC_Data1= (uint8_t)((DAC_Data>>8)&0x00FF); ui...