Hi, Everyone.
I have a board STM32F401 NUCLEO-64 and i try to use bootloader with RS-232.
I am using PA10 and PA9 like RX/TX.
On CN7 i connect pins 5 and 7 (BOOT0 to 3,3V).
On CN10 pins 20 and 22 (BOOT1 to GND).
For RS-232 i am using cables USB to RS-232, and i try to connect without cable USB-R232, solder D-SUB 9 pin, (pins 2,3 and 5) and connect on COM-port on PC.
And I always have a message on Flash Loader Demonstration
Unrecognized device.
I tried to click the reset pin, and other things.
in STM32CubeProgrammer i have next message
Error: Activating device: KO. Please, verify the boot mode configuration and check the serial port configuration. Reset your device then try again...
I saw and did like in video instruction, and i always have problems.
Power supplies i used different, and from USB, and used the separate power supply (of course with connected to GND).
On the oscilloscope, i see impulses RX and TX, when i try to connect.
Kind regards,
Oleksii
