reflow-oven-control-sw/stm-firmware/stm-periph/crc-unit.c

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/* 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/clock-enable-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]);
}