[STM32] solution to the problem that SWD cannot recognize devices after STM32 burning program

When there is a problem with the software configuration , It will cause the program to download , Unable to identify the problem of the chip . The chip needs to be erased .

One 、 Hardware connection

1、 Use USB Serial port conversion tool , Connect STM32 Chip UART1 On the pin , Be careful TX and RX The order
2、 take boot0 The pin level is pulled high

Two 、

Software download address ：

http://www.mcuisp.com/

3、 ... and 、 Erase the chip
1、 Set the baud rate to 76800, Select the corresponding serial port
2、 Click on “ Clear the chip ”, Then press the reset key , Wait for the cleanup to complete