mirror of
https://github.com/Dejvino/lilybook.git
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139 lines
3.3 KiB
C
139 lines
3.3 KiB
C
/*
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* Lua RTOS, SPIFFS low access
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*
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* Copyright (C) 2015 - 2017
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* IBEROXARXA SERVICIOS INTEGRALES, S.L. & CSS IBÉRICA, S.L.
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*
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* Author: Jaume Olivé (jolive@iberoxarxa.com / jolive@whitecatboard.org)
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*
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* All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this software
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* and its documentation for any purpose and without fee is hereby
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* granted, provided that the above copyright notice appear in all
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* copies and that both that the copyright notice and this
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* permission notice and warranty disclaimer appear in supporting
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* documentation, and that the name of the author not be used in
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* advertising or publicity pertaining to distribution of the
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* software without specific, written prior permission.
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*
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* The author disclaim all warranties with regard to this
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* software, including all implied warranties of merchantability
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* and fitness. In no event shall the author be liable for any
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* special, indirect or consequential damages or any damages
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* whatsoever resulting from loss of use, data or profits, whether
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* in an action of contract, negligence or other tortious action,
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* arising out of or in connection with the use or performance of
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* this software.
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*/
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#include <stdlib.h>
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#include "esp_spiffs.h"
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#include "esp_attr.h"
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#include "spiffs.h"
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#include <esp_spi_flash.h>
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s32_t IRAM_ATTR esp32_spi_flash_read(u32_t addr, u32_t size, u8_t *dst) {
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u32_t aaddr;
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u8_t *buff = NULL;
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u8_t *abuff = NULL;
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u32_t asize;
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asize = size;
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// Align address to 4 byte
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aaddr = (addr + (4 - 1)) & (u32_t)-4;
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if (aaddr != addr) {
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aaddr -= 4;
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asize += (addr - aaddr);
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}
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// Align size to 4 byte
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asize = (asize + (4 - 1)) & (u32_t)-4;
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if ((aaddr != addr) || (asize != size)) {
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// Align buffer
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buff = malloc(asize + 4);
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if (!buff) {
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return SPIFFS_ERR_INTERNAL;
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}
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abuff = (u8_t *)(((ptrdiff_t)buff + (4 - 1)) & (u32_t)-4);
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if (spi_flash_read(aaddr, (void *)abuff, asize) != 0) {
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free(buff);
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return SPIFFS_ERR_INTERNAL;
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}
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memcpy(dst, abuff + (addr - aaddr), size);
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free(buff);
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} else {
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if (spi_flash_read(addr, (void *)dst, size) != 0) {
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return SPIFFS_ERR_INTERNAL;
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}
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}
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return SPIFFS_OK;
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}
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s32_t IRAM_ATTR esp32_spi_flash_write(u32_t addr, u32_t size, const u8_t *src) {
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u32_t aaddr;
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u8_t *buff = NULL;
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u8_t *abuff = NULL;
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u32_t asize;
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asize = size;
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// Align address to 4 byte
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aaddr = (addr + (4 - 1)) & -4;
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if (aaddr != addr) {
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aaddr -= 4;
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asize += (addr - aaddr);
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}
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// Align size to 4 byte
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asize = (asize + (4 - 1)) & -4;
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if ((aaddr != addr) || (asize != size)) {
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// Align buffer
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buff = malloc(asize + 4);
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if (!buff) {
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return SPIFFS_ERR_INTERNAL;
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}
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abuff = (u8_t *)(((ptrdiff_t)buff + (4 - 1)) & -4);
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if (spi_flash_read(aaddr, (void *)abuff, asize) != 0) {
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free(buff);
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return SPIFFS_ERR_INTERNAL;
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}
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memcpy(abuff + (addr - aaddr), src, size);
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if (spi_flash_write(aaddr, (uint32_t *)abuff, asize) != 0) {
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free(buff);
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return SPIFFS_ERR_INTERNAL;
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}
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free(buff);
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} else {
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if (spi_flash_write(addr, (uint32_t *)src, size) != 0) {
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return SPIFFS_ERR_INTERNAL;
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}
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}
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return SPIFFS_OK;
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}
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s32_t IRAM_ATTR esp32_spi_flash_erase(u32_t addr, u32_t size) {
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if (spi_flash_erase_sector(addr >> 12) != 0) {
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return SPIFFS_ERR_INTERNAL;
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}
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return SPIFFS_OK;
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}
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