146 lines
6.2 KiB
C
146 lines
6.2 KiB
C
/*!
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\file main.c
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\brief main flash program, write protection
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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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#define FLASH_PAGE_PROGRAM
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//#define WRITE_PROTECTION_ENABLE
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#define WRITE_PROTECTION_DISABLE
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typedef enum {FAILED = 0, PASSED = !FAILED} test_state;
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#define FLASH_PAGE_SIZE ((uint16_t)0x1000U) /*!< size of page */
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#define WRP_REGION_SPAGE ((uint32_t)0x00000080U) /*!< start page of write protection region: page128 */
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#define WRP_REGION_EPAGE ((uint32_t)0x00000082U) /*!< end page of write protection region: page130 */
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#define BANK_WRITE_START_ADDR ((uint32_t)0x08080000U) /*!< user write protection start page address */
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#define BANK_WRITE_END_ADDR ((uint32_t)0x08082000U) /*!< user write protection end page address */
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#define WRP_REGION_SPAGE_DEFAULT_VALUE ((uint32_t)0x000003FFU) /*!< start page of write protection region default value: page1024 */
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#define WRP_REGION_EPAGE_DEFAULT_VALUE ((uint32_t)0x00000000U) /*!< end page of write protection region default value: page0 */
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#define OBWRP_VALUE ((uint32_t)0x00820080U) /*!< the value of OBWRP */
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#define OBWRP_RESET_VALUE ((uint32_t)0x000003FFU) /*!< the reset value of OBWRP */
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uint32_t erase_counter = 0x0, address = 0x0;
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uint32_t data = 0x12345678;
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uint32_t num_of_page;
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__IO fmc_state_enum fmc_state = FMC_READY;
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__IO test_state program_state = PASSED;
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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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uint32_t obwrp0, obwrp1;
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obwrp0 = FMC_OBWRP0;
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obwrp1 = FMC_OBWRP1;
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/* initialize leds */
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gd_eval_led_init(LED2);
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gd_eval_led_init(LED3);
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/* unlock the flash program/erase controller */
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fmc_unlock();
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fmc_flag_clear(FMC_FLAG_END | FMC_FLAG_WPERR | FMC_FLAG_OBERR);
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#ifdef WRITE_PROTECTION_DISABLE
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if((OBWRP_VALUE == obwrp0) || (OBWRP_RESET_VALUE != obwrp1)){
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ob_unlock();
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/* configure write protection pages */
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ob_write_protection_config(WRP_REGION_SPAGE_DEFAULT_VALUE, WRP_REGION_EPAGE_DEFAULT_VALUE, OBWRP_INDEX0);
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ob_write_protection_config(WRP_REGION_SPAGE_DEFAULT_VALUE, WRP_REGION_EPAGE_DEFAULT_VALUE, OBWRP_INDEX1);
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/* start option bytes modification */
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ob_start();
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ob_reload();
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}
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#elif defined WRITE_PROTECTION_ENABLE
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if((OBWRP_VALUE != obwrp0) || (OBWRP_RESET_VALUE != obwrp1)){
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ob_unlock();
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/* configure write protection pages */
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ob_write_protection_config(WRP_REGION_SPAGE, WRP_REGION_EPAGE, OBWRP_INDEX0);
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ob_write_protection_config(WRP_REGION_SPAGE_DEFAULT_VALUE, WRP_REGION_EPAGE_DEFAULT_VALUE, OBWRP_INDEX1);
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/* start option bytes modification */
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ob_start();
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ob_reload();
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}
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#endif /* WRITE_PROTECTION_DISABLE */
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#ifdef FLASH_PAGE_PROGRAM
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/* get the number of pages to be erased */
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num_of_page = (BANK_WRITE_END_ADDR - BANK_WRITE_START_ADDR) / FLASH_PAGE_SIZE;
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/* the selected pages are not write protected */
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if ((OBWRP_RESET_VALUE == obwrp0) && (OBWRP_RESET_VALUE == obwrp1)){
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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(erase_counter = 0; (erase_counter < num_of_page) && (fmc_state == FMC_READY); erase_counter++){
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fmc_state = fmc_page_erase(BANK_WRITE_START_ADDR + (FLASH_PAGE_SIZE * erase_counter));
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}
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/* flash word program of data 0x12345678 at addresses defined by BANK_WRITE_START_ADDR and BANK_WRITE_END_ADDR */
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address = BANK_WRITE_START_ADDR;
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while((address < BANK_WRITE_END_ADDR) && (fmc_state == FMC_READY)){
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fmc_state = fmc_word_program(address, data);
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address = address + 4;
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}
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/* check the correctness of written data */
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address = BANK_WRITE_START_ADDR;
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while((address < BANK_WRITE_END_ADDR) && (program_state != FAILED)){
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if((*(__IO uint32_t*) address) != data){
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program_state = FAILED;
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}
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address += 4;
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}
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gd_eval_led_on(LED2);
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}
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else{
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/* error to program the flash : the desired pages are write protected */
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program_state = FAILED;
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gd_eval_led_on(LED3);
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}
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#endif /* FLASH_PAGE_PROGRAM */
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while(1){
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}
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}
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