STM32读取ADXL345加速度，然后根据加速度计算出角度，根据角度控制dac8650输出成比例的电压量，已经在pcb电路板上验证过。- STM32 read ADXL345 acceleration, and then calculate the angle according to the acceleration, according to the angle of the output voltage control dac8650 output, has been verified