About using USB to RS232 to download programs to STM32

简单的理想

About using USB to RS232 to download programs to STM32 [Copy link]

Hey guys, I want to ask a question, how to use USB to convert RS232 to download the program to the STM32 development board [cover face

Jacktang

This introduction contains a lot of information

The two pins of the stm32 chip are boot1 and boot0.

When downloading the program, boot1 is connected to ground and boot0 is connected to 3.3V high level.

After connecting, press the reset button, and then start downloading the program using the USB to serial port. After the download is completed, connect boot0 to ground, press the reset button, and the program starts running.

bioger

You can find the corresponding chip and there will be corresponding serial port ISP serial port download software

Boot0 uses rts control, and boot1 connected to 0 can automatically control the download, without the need to manually control the mode of these two signals.

wangerxian

This is complicated. Generally, you have to write the communication protocol yourself and then use the serial port to download the program to the microcontroller.