STM32G030 - FLASH - Fail to use FLASH_Program_Fast

[arthhh]

Hi!

I am using STMCube IDE and a STM32G030F6

I am trying to implement a code that writes variables to the flash. And I was able to make it work, with some limitations...

THIS CODE WORKS

union
  {
  uint8_t regs[6];
  uint64_t data;
  } mem;  

  uint64_t *my_pointer;
  my_pointer = (uint64_t *)0x08007000; // base address of page 14
  if(*my_pointer == 0xFFFFFFFFFFFFFFFF) // if the memory is blank
  {
   HAL_FLASH_Unlock();
   mem.regs[0] = 25;
   mem.regs[1] = 50;
   mem.regs[2] = 75;
   mem.regs[3] = 100;
   mem.regs[4] = 1;
   mem.regs[5] = 0;

   HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, 0x08007000, mem.data);
   HAL_FLASH_Lock();
  }

I run this code in the initialization of the board, the first time the program runs it will enter the if...

Instead of using

HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD...

 I'd like to use:

HAL_FLASH_Program(FLASH_TYPEPROGRAM_FAST...

But i am not able to make it work... it crashes all the time in the function:

static void FLASH_Program_Fast(uint32_t Address, uint32_t DataAddress);

What is the best way to write a series of variables in the flash? I plan to write more than 20 uint16_t...

 

[Jar_No]

Same here. The Flash_Program_Fast keeps crashing.

 

[XR.1]

Anyone at ST that has just a little interest in helping its customers?

[Pazzy]

I have encountered the same issue, the FLASH_TYPEPROGRAM_FAST method crashes the micro and even aborts the debugging session.

A workaround has been to wrap FLASH_TYPEPROGRAM_DOUBLEWORD in a function that behaves (takes in the same parameters) as FLASH_TYPEPROGRAM_FAST, which then executes as expected and without an issue.

[TDK]

Would guess the issue here is that code has not been placed properly in RAM leading to unacceptable delays during fast programming. The __RAM_FUNC macro needs some help.