Version used: Current HEAD + PR
Affected variant: RemRam v1

Currently I try to write some configuration values with the help of the EEPROM library to the flash.

Given this simple sketch:

#include <EEPROM.h>

void setup() {
	Serial.begin(115200);
	uint8_t v = EEPROM.read(0);
	if (v == 123) {
		Serial.println("Saved");
	} else {
		Serial.println("Wasn't saved");
		EEPROM.write(0, 123);
	}
}

void loop() {
	delay(15);
}

The flash won't safe the variable content. I tracked down the problem to the set_data_to_flash() function in stm32_eeprom.c.

HAL_FLASHEx_Erase(&EraseInitStruct, &SectorError) will return an HAL_ERROR and when debugging the error with HAL_FLASH_GetError(), I will receive a FLASH_ERROR_WRP error (FLASH Write protected error). SectorError contains a 0x17 (23).

Is there anything special I need to do when wanting to write to the flash when using a F7?