• Python 3.6
• stm32f103c6t6

Connect the USB port of PC with usart2 of stm32f103c6t6. USB to TTL converter may be needed.

Structure of the message package:

• HEAD: the head of the package, here is 0xff.
• LENTH: the number of bytes in the part of DATA.
• TYPE: the type of data. Number 1 to 7 can be used. Note that 0 is unavailable.
• DATA: data in the message.
• CHECK: low 8 bit of the sum of the data.

Use Usart to receive message from computer.

Use a uint16_t variable MY_REC_STA to record the state of receiving data.

• bit15: receiving flag of head of the package
• bit14: receiving flag of length
• bit13,12,11: type of the data
• bit10: flag of finishing receiving data
• bit7~0: counter when receiving data

Put the initUsart2() in your main function. Remember to set priority group by functionNVIC_PriorityGroupConfig().

Write your code or callback function in Usart2_IRQHandler() (in the file Usart2.c) to address the received data.

Some parameters, such as baud, buffer size, etc, can be modified in the file Usart2.h.

Class SendMsg is defined to pack the message and send it to stm32 through serial.

serial in python can be installed by the following command in the terminal:

pip3 install pyserial

Use the method send(self, msg_type : bytes, data : list)

Remember to use the same baud with stm32