185 lines
4.2 KiB
C
185 lines
4.2 KiB
C
/*
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* Copyright (c) 2006-2018, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2020-04-29 supperthomas first version
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*/
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#include "board.h"
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#include <nrfx.h>
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#include "nrfx_nvmc.h"
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#ifdef BSP_USING_ON_CHIP_FLASH
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//#include "drv_config.h"
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#include "drv_flash.h"
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#if defined(PKG_USING_FAL)
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#include "fal.h"
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#endif
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#include <rtdbg.h>
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#define LOG_TAG "drv.flash"
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/**
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* @brief Gets the page of a given address
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* @param Addr: Address of the FLASH Memory
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* @retval The page of a given address
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*/
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static uint32_t GetPage(uint32_t Addr)
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{
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uint32_t page = 0;
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if (Addr < (MCU_FLASH_START_ADDRESS + MCU_FLASH_SIZE))
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{
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page = (Addr - MCU_FLASH_START_ADDRESS) / MCU_FLASH_PAGE_SIZE;
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}
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else
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{
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return 0xffffffff;
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}
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return page;
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}
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/**
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* Read data from flash.
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* @note This operation's units is word.
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*
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* @param addr flash address
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* @param buf buffer to store read data
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* @param size read bytes size
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*
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* @return result
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*/
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int mcu_flash_read(rt_uint32_t addr, rt_uint8_t *buf, size_t size)
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{
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size_t i;
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if ((addr + size) > MCU_FLASH_END_ADDRESS)
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{
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LOG_E("read outrange flash size! addr is (0x%p)", (void *)(addr + size));
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return -RT_EINVAL;
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}
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for (i = 0; i < size; i++, buf++, addr++)
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{
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*buf = *(rt_uint8_t *) addr;
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}
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return size;
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}
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/**
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* Write data to flash.
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* @note This operation's units is word.
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* @note This operation must after erase. @see flash_erase.
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*
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* @param addr flash address
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* @param buf the write data buffer
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* @param size write bytes size
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*
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* @return result
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*/
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int mcu_flash_write(rt_uint32_t addr, const uint8_t *buf, size_t size)
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{
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if ((addr + size) > MCU_FLASH_END_ADDRESS)
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{
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LOG_E("ERROR: write outrange flash size! addr is (0x%p)\n", (void *)(addr + size));
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return -RT_EINVAL;
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}
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if (addr % 4 != 0)
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{
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LOG_E("write addr should be 4-byte alignment");
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//4byte write
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//else byts
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return -RT_EINVAL;
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}
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if (size < 1)
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{
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return -RT_ERROR;
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}
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if (size % 4 != 0)
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{
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nrfx_nvmc_bytes_write(addr, buf, size);
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return size;
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}
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else
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{
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nrfx_nvmc_words_write(addr, buf, size / 4);
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return size;
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}
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}
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/**
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* Erase data on flash.
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* @note This operation is irreversible.
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* @note This operation's units is different which on many chips.
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*
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* @param addr flash address
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* @param size erase bytes size
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*
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* @return result
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*/
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int mcu_flash_erase(rt_uint32_t addr, size_t size)
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{
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nrfx_err_t result = RT_EOK;
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uint32_t FirstPage = 0, NbOfPages = 0;
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if ((addr + size) > MCU_FLASH_END_ADDRESS)
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{
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LOG_E("ERROR: erase outrange flash size! addr is (0x%p)\n", (void *)(addr + size));
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return -RT_EINVAL;
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}
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FirstPage = GetPage(addr);
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NbOfPages = GetPage(addr + size - 1) - FirstPage + 1;
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for (int i = 0; i < NbOfPages ; i++)
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{
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result = nrfx_nvmc_page_erase((FirstPage + i) * MCU_FLASH_PAGE_SIZE);
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if (NRFX_SUCCESS != result)
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{
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LOG_E("ERROR: erase flash page %d ! error code is (%x)\n", FirstPage + i, result);
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return -RT_EINVAL;
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}
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}
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LOG_D("erase done: addr (0x%p), size %d", (void *)addr, NbOfPages * MCU_FLASH_PAGE_SIZE);
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return size;
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}
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#if defined(PKG_USING_FAL)
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static int fal_flash_read(long offset, rt_uint8_t *buf, size_t size);
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static int fal_flash_write(long offset, const rt_uint8_t *buf, size_t size);
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static int fal_flash_erase(long offset, size_t size);
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const struct fal_flash_dev mcu_onchip_flash = {"mcu_onchip", MCU_FLASH_START_ADDRESS, MCU_FLASH_SIZE, MCU_FLASH_PAGE_SIZE, {NULL, fal_flash_read, fal_flash_write, fal_flash_erase} };
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static int fal_flash_read(long offset, rt_uint8_t *buf, size_t size)
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{
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return mcu_flash_read(mcu_onchip_flash.addr + offset, buf, size);
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}
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static int fal_flash_write(long offset, const rt_uint8_t *buf, size_t size)
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{
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return mcu_flash_write(mcu_onchip_flash.addr + offset, buf, size);
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}
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static int fal_flash_erase(long offset, size_t size)
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{
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return mcu_flash_erase(mcu_onchip_flash.addr + offset, size);
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}
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#endif
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#endif /* BSP_USING_ON_CHIP_FLASH */
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