120 lines
4.1 KiB
C
120 lines
4.1 KiB
C
/* Copyright 2024 Bogdan Pilyugin
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* File name: sdcard.c
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* Project: webguiapp
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* Created on: 2024-05-07
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* Author: bogd
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* Description:
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*/
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#include <string.h>
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#include <sys/unistd.h>
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#include <sys/stat.h>
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#include "esp_vfs_fat.h"
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#include "sdmmc_cmd.h"
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#include "SysConfiguration.h"
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#if CONFIG_SDCARD_ENABLE
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static const char *TAG = "sdcard";
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#define MOUNT_POINT "/sdcard"
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// Pin assignments can be set in menuconfig, see "SD SPI Example Configuration" menu.
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// You can also change the pin assignments here by changing the following 4 lines.
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#define PIN_NUM_MISO CONFIG_SDCARD_SPI_MISO_GPIO
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#define PIN_NUM_MOSI CONFIG_SDCARD_SPI_MOSI_GPIO
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#define PIN_NUM_CLK CONFIG_SDCARD_SPI_SCLK_GPIO
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#define PIN_NUM_CS CONFIG_SDCARD_SPI_CS_GPIO
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void InitSysSDCard()
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{
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esp_err_t ret;
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// Options for mounting the filesystem.
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// If format_if_mount_failed is set to true, SD card will be partitioned and
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// formatted in case when mounting fails.
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esp_vfs_fat_sdmmc_mount_config_t mount_config = {
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#ifdef CONFIG_EXAMPLE_FORMAT_IF_MOUNT_FAILED
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.format_if_mount_failed = true,
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#else
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.format_if_mount_failed = false,
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#endif // EXAMPLE_FORMAT_IF_MOUNT_FAILED
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.max_files = 5,
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.allocation_unit_size = 16 * 1024
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};
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sdmmc_card_t *card;
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const char mount_point[] = MOUNT_POINT;
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ESP_LOGI(TAG, "Initializing SD card");
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// Use settings defined above to initialize SD card and mount FAT filesystem.
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// Note: esp_vfs_fat_sdmmc/sdspi_mount is all-in-one convenience functions.
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// Please check its source code and implement error recovery when developing
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// production applications.
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ESP_LOGI(TAG, "Using SPI peripheral");
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// By default, SD card frequency is initialized to SDMMC_FREQ_DEFAULT (20MHz)
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// For setting a specific frequency, use host.max_freq_khz (range 400kHz - 20MHz for SDSPI)
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// Example: for fixed frequency of 10MHz, use host.max_freq_khz = 10000;
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sdmmc_host_t host = SDSPI_HOST_DEFAULT();
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host.slot = CONFIG_SDCARD_SPI_HOST;
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spi_bus_config_t bus_cfg = {
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.mosi_io_num = PIN_NUM_MOSI,
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.miso_io_num = PIN_NUM_MISO,
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.sclk_io_num = PIN_NUM_CLK,
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.quadwp_io_num = -1,
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.quadhd_io_num = -1,
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.max_transfer_sz = 4000,
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};
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ret = spi_bus_initialize(host.slot, &bus_cfg, SDSPI_DEFAULT_DMA);
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if (ret != ESP_OK)
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{
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ESP_LOGE(TAG, "Failed to initialize bus.");
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return;
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}
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// This initializes the slot without card detect (CD) and write protect (WP) signals.
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// Modify slot_config.gpio_cd and slot_config.gpio_wp if your board has these signals.
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sdspi_device_config_t slot_config = SDSPI_DEVICE_CONFIG_DEFAULT();
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slot_config.gpio_cs = PIN_NUM_CS;
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slot_config.host_id = host.slot;
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ESP_LOGI(TAG, "Mounting filesystem");
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ret = esp_vfs_fat_sdspi_mount(mount_point, &host, &slot_config, &mount_config, &card);
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if (ret != ESP_OK)
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{
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if (ret == ESP_FAIL)
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{
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ESP_LOGE(
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TAG,
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"Failed to mount filesystem. "
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"If you want the card to be formatted, set the CONFIG_EXAMPLE_FORMAT_IF_MOUNT_FAILED menuconfig option.");
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}
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else
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{
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ESP_LOGE(TAG, "Failed to initialize the card (%s). "
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"Make sure SD card lines have pull-up resistors in place.",
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esp_err_to_name(ret));
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}
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return;
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}
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ESP_LOGI(TAG, "Filesystem mounted");
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// Card has been initialized, print its properties
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sdmmc_card_print_info(stdout, card);
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}
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#endif
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