/* Reflow Oven Controller
 *
 * Copyright (C) 2020  Mario Hüttel <mario.huettel@gmx.net>
 *
 * This file is part of the Reflow Oven Controller Project.
 *
 * The reflow oven controller is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * GDSII-Converter is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with the reflow oven controller project.
 * If not, see <http://www.gnu.org/licenses/>.
 */

#include <stm-periph/crc-unit.h>
#include <stm-periph/rcc-manager.h>
#include <stm32/stm32f4xx.h>

void crc_unit_init(void)
{
	rcc_manager_enable_clock(&RCC->AHB1ENR, BITMASK_TO_BITNO(RCC_AHB1ENR_CRCEN));
	crc_unit_reset();
}

void crc_unit_deinit(void)
{
	rcc_manager_disable_clock(&RCC->AHB1ENR, BITMASK_TO_BITNO(RCC_AHB1ENR_CRCEN));
}

void crc_unit_reset(void)
{
	CRC->CR = CRC_CR_RESET;
}

uint32_t crc_unit_get_crc(void)
{
	return CRC->DR;
}

void crc_unit_input(uint32_t data)
{
	CRC->DR = data;
}

void crc_unit_input_array(const uint32_t *data, uint32_t len)
{
	uint32_t i;

	if (!data)
		return;
	for (i = 0; i < len; i++)
		crc_unit_input(data[i]);
}