USART System Bootloader - STM32L151xx

[uilter]

Posted on June 08, 2015 at 22:05

Hello,

I'm trying to use the default bootloader of this STM32L151CCT6 over USART1.I've read and follow all the tips and tutorials of AN2606 and AN3155, but without sucess.This is my process to try a communication:

• Turn on my board

• Set the microcontroller in reset mode (LOW in Reset Pin)

• Set the pin BOOT0 in HIGH

• Release the Reset Pin

• Send 0x7F;

• Wait for 0x79;

When I send 0x7F and wait for 0x79, it never returns.

Am I missing something in this process?Many thanks for any help or guidance that can be offered!

[uilter]

Posted on June 11, 2015 at 01:06

Thank you for the advices hwasti.

I finally found the BOOT1 in the datasheet. =PI'll include this pin in the design.