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No boot Loader response on STM32F334 discovery board

CAPOSIENA.Philippe
Associate II
Posted on September 17, 2015 at 11:15

Hello, 

i'm using the STM32F334C8 discovery board and i want to use the boot loader.

I set Boot0 to 3,3V and restart the board.

When i send the 0x7F data to the USART1 RX pin, i get no answer from the board.

The nBoot1 bit is set to 1 so the microcontroller should go into the boot loader mode as described in the documentation.

The flash protection is at level 0 (no protection).

I can see that the board doesn't jump to my application (because some leds are turned off) so i think it jumps to the boot loader mode or embedded SRAM mode.

The Usart communication works because i use it in my application. I can see the byte 0x7F on the pin with my oscilloscope.

Com parameters are : 8 bits, even parity and 1 stop bit

Thanks in advance
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