寄存器写入依次如下:
Write_SPI(0x20,0x00,0x03); // power on DAC-A and DAC-B
Write_SPI(0x28,0x00,0x00); // reset DACs input register and update all DACs
Write_SPI(0x0F,0x00,0x00); // update all DACs
Write_SPI(0x30,0x00,0x03); // disable LADC function for DAC-A and…