CANBUS & RS485收发测试程序，基于Keil uVision4和mbed开发环境，适用于STM32F070RB、STM32F072RB、STM32F091RC、STM32F302RB、STM32F303RE、STM32F334R8、STM32L053B8、STM32F030R8、STM32F103RB、STM32F302R8、STM32F401RE、STM32F411RE-CAN BUS & RS485 transceiver test program, based on Keil u