int32_t flash_init(flash_t *obj)
{
    (void)obj;
    return 0;
}

int32_t flash_init(flash_t *obj)
{
    (void)obj;
    MSC_Init();
    return 0;
}

int32_t flash_free(flash_t *obj)
{
    (void)obj;
    return 0;
}

int32_t flash_free(flash_t *obj)
{
    (void)obj;
    return 0;
}

I recently used or try to use the FLASH IAP on a EFM32 Pearl Gecko (EFM32PG12_STK3402) and found a "bug" in the flash_api.c. The flash_init() function should be changed from: <<code title=flash_api.c init actual>> int32_t flash_init(flash_t *obj) { (void)obj; return 0; } <</code>> to <<code title=flash_api.c init should be>> int32_t flash_init(flash_t *obj) { (void)obj; MSC_Init(); return 0; } <</code>> and flash_free() function from: <<code title=flash_api.c deinit actual>> int32_t flash_free(flash_t *obj) { (void)obj; return 0; } <</code>> to <<code title=flash_api.c deinit should be>> int32_t flash_free(flash_t *obj) { (void)obj; return 0; } <</code>> With this changes you can use in your program the FLASH IAP without using the direct EFM32 Flash HAL init & deinit functions and the program portability should increase.

Hi DBS 06, can you send a patch via github pull request with the proposal? https://github.com/ARMmbed/mbed-os/pulls

Of course! I would be happy to give something back to the community! :-)