Dear All,
I jump in boot mode with boot0 to high level, and i can test it with dfu USB connexion.
Unfortunately, it does not work with UART3.
I have the TX signal 0x3F coming from computer, but any acknowledgment. In STM32CUBPROGRAMMER, there is : "Error: Activating device: KO. Please, verify the boot mode configuration and check the serial port configuration. Reset your device then try again..."
I use an usb - ttl 3.3v cable which works, and I did not add pull up resistor because the signal is high by default.
Any help would be greatly appreciated.
Thanks,
