Flash Loader in Nucleo-STM32F401 (Unrecognized device)
Hi everyone.
I have a board Nucleo-STM32F401, and i will try to write the program on STM32f401 with RS-232 communication, i did like in pdf, BOOT0 with jumper connect to Vcc (CN7 5pin+7pin) and i have the simple device RS232 to USB, and RX/TX connect to PA9/PA10 (CN10 33 and 21 pins), and of course GND pin to GND of RS-232.
Power supply i take from USB, the board always connects with USB-mini to PC.
And when i try to use Flash Loader i have a message:
Unrecognized device.. Please, reset your device then try again.
(I tried).
Parameters of Flash Loader like in pdf.:
Baud rate 115200;
Prity Even;
Echo Disabled.
When i tried to use STM32CubeProgrammer,
And i have another error:
Error: Activating device: KO. Please, verify the boot mode configuration and check the serial port configuration. Reset your device then try again...
Can you help me? It's my first experience with STM controllers, maybe i need to do something to turn it on? Maybe i should write the program, and write program to the controller, and after that, i will have a possibility to use RS-232 programming?