Introduction - If you have any usage issues, please Google them yourself
The core part of this module is composed of a piece of 14 dual-channel serial interface multiplication DAC8802 d/a converter chip programmable amplification and attenuation of part, this part of the DAC8802 chip through internal SSI bus communication with internal STM32F103ZET6 SPI, by STM32F103ZET6 transmitted through SPI CODE value decided to enlarge or amplitude attenuation