Introduction - If you have any usage issues, please Google them yourself
Program 1:stm32 program serial port 2 receive serial 1 send program, change from expansion experiment 11 ATK-HC05 Bluetooth serial module experiment program.
Program 2:zigbee serial communication - send string.
Connection mode: CC2530 of P02 connection, STM32 of PA2, P03 connection of STM32 of PA3
Program 2 serial port has been sent "Hello ZigBee" string mini version of STM32 program 1 Serial 2 receive after forwarding the serial port 1, the original output.