Can't flash the board (tried 3 different programmers)

[Mondo]

Hello,

I bought STM32H743XIH6 board and first tried to program it with FTDI programmer and STM32CubeProgrammer. It looks like the serial interface detects the board correctly as I can see it in the STM32CubeProgrammer but fails at a read attempt of 0x080000000 address with error message like "error occured during read at address 0x08000". 

Next, I read that I need ST-LINK to over come UART problem so I did. I purchased ST-Link V2 and gave it a try:

22:33:27 : UR connection mode is defined with the HWrst reset mode
22:33:27 : UR connection mode is defined with the HWrst reset mode
22:33:27 : ST-LINK SN : 37FF71064E57343691A31343
22:33:27 : ST-LINK FW : V2J46S7
22:33:27 : Board : --
22:33:27 : Voltage : 3.26V
22:33:27 : SWD freq : 4000 KHz
22:33:27 : Connect mode: Normal
22:33:27 : Reset mode : Hardware reset
22:33:27 : Device ID : 0x450
22:33:27 : Revision ID : Rev V
22:33:27 : UPLOADING OPTION BYTES DATA ...
22:33:27 : Bank : 0x00
22:33:27 : Address : 0x5200201c
22:33:27 : Size : 308 Bytes
22:33:27 : UPLOADING ...
22:33:27 : Size : 1024 Bytes
22:33:27 : Address : 0x8000000
22:33:27 : Read progress:
22:33:27 : Error: Data read failed
22:33:32 : Disconnected from device.
22:33:35 : Start STLinkUpgrade...
22:34:02 : UR connection mode is defined with the HWrst reset mode
22:34:02 : UR connection mode is defined with the HWrst reset mode
22:34:02 : ST-LINK SN : 37FF71064E57343691A31343
22:34:02 : ST-LINK FW : V2J46S7
22:34:02 : Board : --
22:34:02 : Voltage : 3.26V
22:34:02 : SWD freq : 4000 KHz
22:34:02 : Connect mode: Normal
22:34:02 : Reset mode : Hardware reset
22:34:02 : Device ID : 0x450
22:34:02 : Revision ID : Rev V
22:34:02 : UPLOADING OPTION BYTES DATA ...
22:34:02 : Bank : 0x00
22:34:02 : Address : 0x5200201c
22:34:02 : Size : 308 Bytes
22:34:02 : UPLOADING ...
22:34:02 : Size : 1024 Bytes
22:34:02 : Address : 0x8000000
22:34:02 : Read progress:
22:34:02 : Error: Data read failed
22:34:18 : Disconnected from device.

I have no idea why it happens but then I read that if my flasher is not original/STM32 blessed then it won't work. So I I bough STM32 official programmer: STLINK-V3MINIE,STLINK-V3. Here I simply get "cannot connect to target".

So to summarize, my experience with STM32 so far is full of frustration. For comparison, ESP32 works out of the box with simple FTDI serial device.

Does anyone have any idea what is wrong here?

[MM..1 · Accepted solution]

Primary try change mode Connect mode: Normal to Connect under reset.

Secondary MCU flash can be read protect = first step to use then is remove read protect = erase mcu flash.

[gbm]

In  ST-Link settings, reduce the SWD clock frequency to about 1 MHz and see if it helps.

[AScha.3]

Hi,

try with your old st-linkV2 again, settings: normal , software reset:

Just power your H7 board from the st-link, connect: swd, swc, 5V, GND .

(connect these 4 wires first, then plug the st-link to the usb !)

Then connect...

[Mondo]

Thanks, the flash erase halped and now I flash the board with both ST-LINK and UART.

However I noticed that my platform doesn't boot correctly - after reset the target is lost - I don;t know why. This is not an offical evaluation board but rather some external stm32h7 startup board. I have generated the example project based on the board vendor CubeMX file but it fails. How can I debug it now?