Verification Failed On UART Programming STM32CubeProgrammer

[TCash.1]

Hello,

I am trying to program the STM32H743ZI using the STM32CubeProgrammer tool in uart mode.

First in order to get the board into the boot loader I use the following runtime code to get into bootloader mode:

/**
 * Function to perform jump to system memory boot from user application
 *
 * Call function when you want to jump to system memory
 */
void JumpToBootloader(void) {
 
 
	 uint32_t i=0;
	  void (*SysMemBootJump)(void);
 
	  /* Set the address of the entry point to bootloader */
	     volatile uint32_t BootAddr = 0x1FF09800;
 
	  /* Disable all interrupts */
	     __disable_irq();
 
	  /* Disable Systick timer */
	     SysTick->CTRL = 0;
 
	  /* Set the clock to the default state */
	     HAL_RCC_DeInit();
 
	  /* Clear Interrupt Enable Register & Interrupt Pending Register */
	     for (i=0;i<5;i++)
	     {
		  NVIC->ICER[i]=0xFFFFFFFF;
		  NVIC->ICPR[i]=0xFFFFFFFF;
	     }
 
	  /* Re-enable all interrupts */
	     __enable_irq();
 
	  /* Set up the jump to booloader address + 4 */
	     SysMemBootJump = (void (*)(void)) (*((uint32_t *) ((BootAddr + 4))));
 
	  /* Set the main stack pointer to the bootloader stack */
	     __set_MSP(*(uint32_t *)BootAddr);
 
	  /* Call the function to jump to bootloader location */
	     SysMemBootJump();
 
	  /* Jump is done successfully */
	     while (1)
	     {
	      /* Code should never reach this loop */
	     }
}

Then I connect via UART3 to the chip and try to program it. It seems to transfer the program ok - but fails on verifying. The same result happens at different lower baudrates as well. Below is the output of STM32_Programmer_CLI.exe:

"      -------------------------------------------------------------------\r\n                       STM32CubeProgrammer v2.4.0                  \r\n      -------------------------------------------------------------------\r\n\r\nSerial Port COM20 is successfully opened.\r\nPort configuration: parity = even, baudrate = 115200, data-bit = 8,\r\n                     stop-bit = 1.0, flow-control = off\r\nActivating device: OK\r\nChip ID: 0x450 \r\nBootLoader protocol version: 3.1\r\n\r\n\r\nMemory Programming ...\r\nOpening and parsing file: DSPBoardH7.elf\r\n  File          : DSPBoardH7.elf\r\n  Size          : 92232 Bytes\r\n  Address       : 0x08000000 \r\n\r\n\r\nErasing memory corresponding to segment 0:\r\nDownload in Progress:\r\n\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1 0%\r\xDB  2%\xDB  4%\xDB  6%\xDB  8%\xDB 10%\xDB 12%\xDB 14%\xDB 16%\xDB 18%\xDB 20%\xDB 22%\xDB 24%\xDB 26%\xDB 28%\xDB 30%\xDB 32%\xDB 34%\xDB 36%\xDB 38%\xDB 40%\xDB 42%\xDB 44%\xDB 46%\xDB 48%\xDB 50%\xDB 52%\xDB 54%\xDB 56%\xDB 58%\xDB 60%\xDB 62%\xDB 64%\xDB 66%\xDB 68%\xDB 70%\xDB 72%\xDB 74%\xDB 76%\xDB 78%\xDB 80%\xDB 82%\xDB 84%\xDB 86%\xDB 88%\xDB 90%\xDB 92%\xDB 94%\xDB 96%\xDB 98%\xDB 100%\r\n\r\nFile download complete\r\nTime elapsed during download operation: 00:00:23.082\r\n\r\n\r\n\r\nVerifying ...\r\n\r\n\r\nRead progress:\r\n\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1\xB1 50%\r\r\n\r\nError: Read Serial Response timed out.\r\n\r\n\r\nError: Error occured during memory read at address 0x08000200\r\n\r\n\r\nError: Failed to read memory at address 0x08000000 during verification\r\n\r\n\r\nError: Download verification failed\r\n\r\n\r\n\r\nRUNNING Program ... \r\n  Address:      : 0x8000000\r\n\r\nTimeout error occured while waiting for acknowledgement.\r\nError: START command not acknowledged!\r\nError: Start operation failed\r\n"

Any Ideas on how to fix this or what I'm missing would be appreciated!

[STOne-32]

can you try to enter boortlaoder mode by hardware option instead of run-time ? and check again.

as it seems not able to read at start of the flash at address 0x0800_0000 which is the run-time bootstrap code.

[TCash.1]

HI STOne-32,

I was able to enter bootloader mode by hardware (holding boot0 high and pulling down the reset pin to reset the board). And indeed I was able to program and verify with UART once in that state.

I'm guessing not, but Is there a way that the chip can be programmed in software boot mode? Basically I need a way for the H7 to get itself into boot mode. Is using the chip to drive its own boot0 via external pins a better method for this?

Thanks for your help

[TCash.1]

Update: I was able to have the H7 drive its own BOOT0 pin high via another pin and a capacitor for holding it high long enough for self reset (again via an external pin). This seems to work well for me