采用keil5编写的针对STM32F103的串口加DMA的方式实现串口不定长字节接收的代码。-Using serial byte variable length code received keil5 written for serial ports plus DMA realization of STM32F103 way.

MODBUS 实现用DMA方式传输串口数据(MODBUS DMA slave MODBUS DMA slave)

连续采集AD转换值，使用DMA的方式保存，并使用串口将AD转换结果打印(Continuous collection of AD conversion value, using the DMA way to save, and use the serial port to print the AD conversion results)

整体架构是STM32 + CPLD控制2个减速电机带正交编码，3个舵机，8个超声波。一个串口和cubieboard通信，接收下行指令并上传实时监测数据。另一个串口接收遥控器指令。两个都用的DMA方式。(The overall architecture is STM32 + CPLD control 2 deceleration motor with orthogonal coding, 3 steering gear, 8 ultrasonic. A serial port and cubieb