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https://github.com/EFeru/hoverboard-sideboard-hack-GD.git
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156 lines
3.6 KiB
C
156 lines
3.6 KiB
C
/*!
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\file gd32f1x0_crc.c
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\brief CRC driver
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*/
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/*
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Copyright (C) 2017 GigaDevice
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2014-12-26, V1.0.0, platform GD32F1x0(x=3,5)
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2016-01-15, V2.0.0, platform GD32F1x0(x=3,5,7,9)
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2016-04-30, V3.0.0, firmware update for GD32F1x0(x=3,5,7,9)
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2017-06-19, V3.1.0, firmware update for GD32F1x0(x=3,5,7,9)
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*/
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#include "gd32f1x0_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_IDATA = (uint32_t)0xFFFFFFFFU;
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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 enable the reverse operation of output data
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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_reverse_output_data_enable(void)
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{
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CRC_CTL &= (uint32_t)(~ CRC_CTL_REV_O);
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CRC_CTL |= (uint32_t)CRC_CTL_REV_O;
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}
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/*!
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\brief disable the reverse operation of output data
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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_reverse_output_data_disable(void)
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{
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CRC_CTL &= (uint32_t)(~ CRC_CTL_REV_O);
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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 write the initializaiton data register
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\param[in] init_data:specify 32-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_init_data_register_write(uint32_t init_data)
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{
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CRC_IDATA = (uint32_t)init_data;
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}
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/*!
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\brief configure the CRC input data function
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\param[in] data_reverse: specify input data reverse function
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\arg CRC_INPUT_DATA_NOT: input data is not reversed
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\arg CRC_INPUT_DATA_BYTE: input data is reversed on 8 bits
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\arg CRC_INPUT_DATA_HALFWORD: input data is reversed on 16 bits
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\arg CRC_INPUT_DATA_WORD: input data is reversed on 32 bits
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\param[out] none
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\retval none
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*/
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void crc_input_data_reverse_config(uint32_t data_reverse)
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{
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CRC_CTL &= (uint32_t)(~CRC_CTL_REV_I);
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CRC_CTL |= (uint32_t)data_reverse;
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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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