42 lines
1.3 KiB
C
42 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 "stm32f1xx_hal.h"
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#include "string.h"
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#define SETTINGS_START_PAGE (0x08000000 + (127 * 1024))
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void flash_save_buffer(const uint8_t *buffer, const uint16_t length) {
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FLASH_EraseInitTypeDef pEraseInit;
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pEraseInit.TypeErase = FLASH_TYPEERASE_PAGES;
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pEraseInit.Banks = FLASH_BANK_1;
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pEraseInit.NbPages = 1;
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pEraseInit.PageAddress = (uint32_t)SETTINGS_START_PAGE;
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uint32_t failingAddress = 0;
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resetWatchdog();
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__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_WRPERR | FLASH_FLAG_PGERR | FLASH_FLAG_BSY);
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HAL_FLASH_Unlock();
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HAL_Delay(1);
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resetWatchdog();
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HAL_FLASHEx_Erase(&pEraseInit, &failingAddress);
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//^ Erase the page of flash (1024 bytes on this stm32)
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// erased the chunk
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// now we program it
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uint16_t *data = (uint16_t *)buffer;
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HAL_FLASH_Unlock();
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for (uint16_t i = 0; i < (length / 2); i++) {
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resetWatchdog();
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HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, SETTINGS_START_PAGE+ (i*sizeof(uint16_t)), data[i]);
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}
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HAL_FLASH_Lock();
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}
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void flash_read_buffer(uint8_t *buffer, const uint16_t length) { memcpy(buffer, (uint8_t*)SETTINGS_START_PAGE, length); }
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