47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
/*
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* flash.c
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*
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* Created on: 29 May 2020
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* Author: Ralim
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*/
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#include "BSP.h"
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#include "BSP_Flash.h"
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#include "gd32vf103_libopt.h"
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#include "string.h"
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#define FMC_PAGE_SIZE ((uint16_t)0x400U)
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// static uint16_t settings_page[FMC_PAGE_SIZE] __attribute__ ((section (".settings_page")));
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// Linker script doesnt want to play, so for now its hard coded
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#define SETTINGS_START_PAGE (0x08000000 + (127 * 1024))
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uint8_t flash_save_buffer(const uint8_t *buffer, const uint16_t length) {
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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);
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fmc_flag_clear(FMC_FLAG_WPERR);
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fmc_flag_clear(FMC_FLAG_PGERR);
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resetWatchdog();
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fmc_page_erase((uint32_t)SETTINGS_START_PAGE);
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resetWatchdog();
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uint16_t *data = (uint16_t *)buffer;
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for (uint16_t i = 0; i < (length / 2); i++) {
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fmc_halfword_program((uint32_t)SETTINGS_START_PAGE + (i * 2), data[i]);
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fmc_flag_clear(FMC_FLAG_END);
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fmc_flag_clear(FMC_FLAG_WPERR);
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fmc_flag_clear(FMC_FLAG_PGERR);
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resetWatchdog();
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}
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fmc_lock();
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return 1;
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}
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void flash_read_buffer(uint8_t *buffer, const uint16_t length) {
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uint32_t *b = (uint32_t *)buffer;
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uint32_t *b2 = (uint32_t *)SETTINGS_START_PAGE;
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for (int i = 0; i < length / 4; i++) {
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b[i] = b2[i];
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}
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}
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