Write to esp8266 burning brush firmware

Wiring is too troublesome , On the computer and esp8266 Add one in the middle is stm32,

adopt stm32 Serial port 2 And serial port 6 Get through （2 Send the received data 6,6 Send the received data 2）, A serial port 2 Connect the computer , A serial port 6 Pick up esp8266

Two more SCM IO, Respectively esp Of en Give high level and IO0 To low level .

Power off the single chip first , Configure the firmware directory , Click on 【 One button burning 】, Then power on the single chip computer to burn it .

Later, I bought a serial port recorder , You can't burn it alive , You can't burn it with a few other software

Check it out , Find out IO0 The output of the mouth is a 2.8v The voltage of （ It should be low level when burning ）