Posted on January 11, 2017 at 09:42appearance：
1.NRST PIN work on law electrical level，it has 200mV;
2.UART1_CK work on high electrical level, so Max485 IC can't receive data;
3.MCU has a continued fever,temperature:70°C;
4.It's power supply work normal;
STM8 MCU has four problem, but when reset its power, STM8 can work normal;
We have been troubled by this problem，somebody can give me any Solution,many thanks!
