flash memory write problem

[ahmash]

hello experts ,my device is stm32f103c8t6 ,cubeide 1.14.0

it shows 64kb flash in ide but shows 128kb in stmcube programmer ,my issue is if i write flash from inside the programme while mcu running then it writes fine but when i erase the page and try to write again it does not write , my code is here ,

HAL_FLASH_Unlock();

HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, 0x0800FC00,1000);// page 63

//write fine until here

HAL_Delay(100);

FLASH_PageErase(0x0800FC00); //page 63

//erase page ok but after using erase it doesnt wite anything

HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, 0x0800FC04,1000);//defaults

HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, 0x0800FC06,100);//d

do anyone know problem ?

i am trying to use a memory page as eeprom

[Sarra.S]

Hello @ahmash 

Try to read out the PER bit value of the FLASH_CR register after the erase. 

[TDK]

> FLASH_PageErase(0x0800FC00); //page 63

To erase a page, call HAL_FLASHEx_Erase, not FLASH_PageErase.

[ahmash · Accepted solution]

I used this method and it worked thanks everyone

erasePage63();

// Function to erase page number 63

void erasePage63(void) {

FLASH_EraseInitTypeDef eraseInitStruct;

uint32_t pageError = 0;

// Erase settings

eraseInitStruct.TypeErase = FLASH_TYPEERASE_PAGES; // Erase type: Page erase

// 0x08000000 + (63 * 1024) = 0x0800FC00 //63 is page no and you can use different

eraseInitStruct.PageAddress = 0x0801FC00; // Start address of page 63

eraseInitStruct.NbPages = 1; // Number of pages to erase

// Erase page

HAL_FLASHEx_Erase(&eraseInitStruct, &pageError);

if (pageError != 0) {

// An error occurred during erasing

// Handle the error here

}

}