102 lines
2.0 KiB
C
102 lines
2.0 KiB
C
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/*!
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\file gd32f4xx_crc.c
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\brief CRC driver
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*/
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/*
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Copyright (C) 2016 GigaDevice
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2016-08-15, V1.0.0, firmware for GD32F4xx
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*/
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#include "gd32f4xx_crc.h"
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/*!
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\brief deinit CRC calculation unit
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\param[in] none
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\param[out] none
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\retval none
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*/
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void crc_deinit(void)
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{
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CRC_DATA = (uint32_t)0xFFFFFFFFU;
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CRC_FDATA = (uint32_t)0x00000000U;
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CRC_CTL = CRC_CTL_RST;
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}
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/*!
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\brief reset data register to the value of initializaiton data register
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\param[in] none
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\param[out] none
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\retval none
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*/
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void crc_data_register_reset(void)
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{
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CRC_CTL |= (uint32_t)CRC_CTL_RST;
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}
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/*!
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\brief read the data register
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\param[in] none
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\param[out] none
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\retval 32-bit value of the data register
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*/
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uint32_t crc_data_register_read(void)
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{
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uint32_t data;
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data = CRC_DATA;
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return (data);
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}
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/*!
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\brief read the free data register
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\param[in] none
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\param[out] none
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\retval 8-bit value of the free data register
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*/
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uint8_t crc_free_data_register_read(void)
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{
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uint8_t fdata;
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fdata = (uint8_t)CRC_FDATA;
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return (fdata);
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}
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/*!
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\brief write the free data register
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\param[in] free_data: specify 8-bit data
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\param[out] none
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\retval none
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*/
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void crc_free_data_register_write(uint8_t free_data)
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{
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CRC_FDATA = (uint32_t)free_data;
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}
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/*!
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\brief CRC calculate a 32-bit data
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\param[in] sdata: specify 32-bit data
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\param[out] none
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\retval 32-bit CRC calculate value
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*/
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uint32_t crc_single_data_calculate(uint32_t sdata)
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{
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CRC_DATA = sdata;
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return (CRC_DATA);
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}
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/*!
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\brief CRC calculate a 32-bit data array
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\param[in] array: pointer to an array of 32 bit data words
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\param[in] size: size of the array
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\param[out] none
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\retval 32-bit CRC calculate value
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*/
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uint32_t crc_block_data_calculate(uint32_t array[], uint32_t size)
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{
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uint32_t index;
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for(index = 0U; index < size; index++){
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CRC_DATA = array[index];
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}
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return (CRC_DATA);
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}
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