C++ (Cpp) stm32x_mass_erase Examples

Example #1

File: stm32x.c Project: kevinmehall/openOCD

static int stm32x_erase(struct flash_bank *bank, int first, int last)
{
	struct target *target = bank->target;
	int i;

	if (bank->target->state != TARGET_HALTED)
	{
		LOG_ERROR("Target not halted");
		return ERROR_TARGET_NOT_HALTED;
	}

	if ((first == 0) && (last == (bank->num_sectors - 1)))
	{
		return stm32x_mass_erase(bank);
	}

	/* unlock flash registers */
	int retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY1);
	if (retval != ERROR_OK)
		return retval;
	retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY2);
	if (retval != ERROR_OK)
		return retval;

	for (i = first; i <= last; i++)
	{
		retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PER);
		if (retval != ERROR_OK)
			return retval;
		retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_AR),
				bank->base + bank->sectors[i].offset);
		if (retval != ERROR_OK)
			return retval;
		retval = target_write_u32(target,
				stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PER | FLASH_STRT);
		if (retval != ERROR_OK)
			return retval;

		retval = stm32x_wait_status_busy(bank, 100);
		if (retval != ERROR_OK)
			return retval;

		bank->sectors[i].is_erased = 1;
	}

	retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_LOCK);
	if (retval != ERROR_OK)
		return retval;

	return ERROR_OK;
}

Example #2

File: stm32x.c Project: unnamet/estick-jtag

static int stm32x_erase(struct flash_bank *bank, int first, int last)
{
	struct target *target = bank->target;
	int i;
	uint32_t status;

	if (bank->target->state != TARGET_HALTED)
	{
		LOG_ERROR("Target not halted");
		return ERROR_TARGET_NOT_HALTED;
	}

	if ((first == 0) && (last == (bank->num_sectors - 1)))
	{
		return stm32x_mass_erase(bank);
	}

	/* unlock flash registers */
	target_write_u32(target, STM32_FLASH_KEYR, KEY1);
	target_write_u32(target, STM32_FLASH_KEYR, KEY2);

	for (i = first; i <= last; i++)
	{
		target_write_u32(target, STM32_FLASH_CR, FLASH_PER);
		target_write_u32(target, STM32_FLASH_AR, bank->base + bank->sectors[i].offset);
		target_write_u32(target, STM32_FLASH_CR, FLASH_PER | FLASH_STRT);

		status = stm32x_wait_status_busy(bank, 10);

		if (status & FLASH_WRPRTERR)
			return ERROR_FLASH_OPERATION_FAILED;
		if (status & FLASH_PGERR)
			return ERROR_FLASH_OPERATION_FAILED;
		bank->sectors[i].is_erased = 1;
	}

	target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK);

	return ERROR_OK;
}