198 lines
7.4 KiB
C
198 lines
7.4 KiB
C
/*!
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\file main.c
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\brief read offset flash region example
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\version 2021-10-30, V1.0.0, firmware for GD32W51x
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*/
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/*
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Copyright (c) 2021, GigaDevice Semiconductor Inc.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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OF SUCH DAMAGE.
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*/
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#include "gd32w51x.h"
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#include "gd32w515p_eval.h"
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uint32_t *ptrd;
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uint32_t address = 0x00;
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uint32_t data0 = 0x01234567U;
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uint32_t data1 = 0x89abcdefU;
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#define FMC_PAGE_SIZE ((uint16_t)0x1000U) /*!< size of page */
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#define PAGE_OFFSET_VALUE ((uint32_t)0x00000010U) /*!< FMC offset value: offset 16 pages */
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#define SOURCE_START_PAGE ((uint32_t)0x00000010U) /*!< start page of source region: page 16 */
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#define SOURCE_END_PAGE ((uint32_t)0x00000011U) /*!< end page of source region: page 17 */
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#define SOURCE_START_ADDR ((uint32_t)0x08010000U) /*!< start address of source region: 0x08010000 */
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#define SOURCE_END_ADDR ((uint32_t)0x08011000U) /*!< end address of source region: 0x08011000 */
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#define ADDOFFSET_START_PAGE ((uint32_t)0x00000020U) /*!< start page of add offset region: page 32 */
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#define ADDOFFSET_END_PAGE ((uint32_t)0x00000021U) /*!< end page of add offset region: page 33 */
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#define ADDOFFSET_START_ADDR ((uint32_t)0x08020000U) /*!< start address of add offset region: 0x08050000 */
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#define ADDOFFSET_END_ADDR ((uint32_t)0x08021000U) /*!< end address of add offset region: 0x08051000 */
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/* calculate the number of page to be programmed/erased */
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uint32_t page_num = (SOURCE_END_ADDR - SOURCE_START_ADDR) / FMC_PAGE_SIZE;
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/* calculate the number of page to be programmed/erased */
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uint32_t word_num = ((SOURCE_END_ADDR - SOURCE_START_ADDR) >> 2);
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/* erase flash pages */
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void fmc_erase_pages(uint32_t start_page_addr, uint32_t page_num);
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/* word program flash */
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void fmc_program(uint32_t start_addr, uint32_t word_num, uint32_t data);
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/* check fmc program result */
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ErrStatus fmc_program_check(uint32_t start_addr, uint32_t word_num, uint32_t compare_data);
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/*!
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\brief main function
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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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int main(void)
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{
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/* initialize leds */
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gd_eval_led_init(LED1);
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gd_eval_led_init(LED2);
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gd_eval_led_init(LED3);
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/* step1: erase source region */
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fmc_erase_pages(SOURCE_START_ADDR, page_num);
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/* step2: program source region with data0 and check if it is successful. If successful, light the LED1 */
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fmc_program(SOURCE_START_ADDR, word_num, data0);
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if(ERROR != fmc_program_check(SOURCE_START_ADDR, word_num, data0)){
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gd_eval_led_on(LED1);
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}else{
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gd_eval_led_off(LED1);
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}
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/* step3: erase add offset region */
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fmc_erase_pages(ADDOFFSET_START_ADDR, page_num);
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/* step4: program add offset region with data1 and check if it is successful. If successful, light the LED2 */
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fmc_program(ADDOFFSET_START_ADDR, word_num, data1);
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if(ERROR != fmc_program_check(ADDOFFSET_START_ADDR, word_num, data1)){
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gd_eval_led_on(LED2);
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}else{
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gd_eval_led_off(LED2);
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}
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/* step5: configure offset region */
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fmc_unlock();
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ob_unlock();
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fmc_offset_region_config(SOURCE_START_PAGE, SOURCE_END_PAGE);
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fmc_offset_value_config(PAGE_OFFSET_VALUE);
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ob_lock();
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fmc_lock();
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/* step6: reading the value of the source region and check if it is equivalent to data1(add offset region value). if successful, light the LED3 */
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if(ERROR != fmc_program_check(SOURCE_START_ADDR, word_num, data1)){
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gd_eval_led_on(LED3);
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}else{
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gd_eval_led_off(LED3);
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}
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while(1){
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}
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}
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/*!
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\brief erase flash pages
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\param[in] start_page_addr: the start address of pages to be erased
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\param[in] page_num: the number of pages to be erased
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\param[out] none
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\retval none
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*/
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void fmc_erase_pages(uint32_t start_page_addr, uint32_t page_num)
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{
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uint32_t EraseCounter;
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/* unlock the flash program/erase controller */
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fmc_unlock();
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/* clear all pending flags */
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fmc_flag_clear(FMC_FLAG_END | FMC_FLAG_WPERR | FMC_FLAG_OBERR);
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/* erase the flash pages */
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for(EraseCounter = 0; EraseCounter < page_num; EraseCounter++){
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fmc_page_erase(start_page_addr + (FMC_PAGE_SIZE * EraseCounter));
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fmc_flag_clear(FMC_FLAG_END | FMC_FLAG_WPERR | FMC_FLAG_OBERR);
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}
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/* lock the main FMC after the erase operation */
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fmc_lock();
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}
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/*!
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\brief word program flash
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\param[in] start_addr: the start address to be programmed
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\param[in] word_num: the number of words to be programmed
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\param[in] data: the data to be programmed to flash
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\param[out] none
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\retval none
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*/
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void fmc_program(uint32_t start_addr, uint32_t word_num, uint32_t data)
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{
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uint32_t ProgramCounter;
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uint32_t address = start_addr;
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/* unlock the flash program/erase controller */
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fmc_unlock();
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/* program flash */
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for(ProgramCounter = 0; ProgramCounter < word_num; ProgramCounter++){
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fmc_word_program(address, data);
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address += 4;
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fmc_flag_clear(FMC_FLAG_END | FMC_FLAG_WPERR | FMC_FLAG_OBERR);
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}
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/* lock the main FMC after the program operation */
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fmc_lock();
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}
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/*!
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\brief check fmc program result
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\param[in] start_addr: the start address to be checked
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\param[in] word_num: the number of words to be checked
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\param[in] compare_data: the data to be commpared with data reading from flash
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\param[out] none
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\retval ErrStatus: ERROR or SUCCESS
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*/
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ErrStatus fmc_program_check(uint32_t start_addr, uint32_t word_num, uint32_t compare_data)
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{
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uint32_t i;
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ptrd = (uint32_t *)start_addr;
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/* check flash whether has been programmed */
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for(i = 0; i < word_num; i++){
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if((*ptrd) != compare_data){
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return ERROR;
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break;
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}else{
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ptrd++;
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}
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}
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return SUCCESS;
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}
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