添加智能灯固件代码

firmware/esp-idf/wumei-smart-firmware/examples/storage/sd_card/main/CMakeLists.txt

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+idf_component_register(SRCS "sd_card_example_main.c"
+                    INCLUDE_DIRS ".")

firmware/esp-idf/wumei-smart-firmware/examples/storage/sd_card/main/Kconfig.projbuild

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+menu "SD Card Example menu"
+
+    config EXAMPLE_FORMAT_IF_MOUNT_FAILED
+        bool "Format the card if mount failed"
+        default n
+        help
+            If this config item is set, format_if_mount_failed will be set to true and the card will be formatted if
+            the mount has failed.
+endmenu

firmware/esp-idf/wumei-smart-firmware/examples/storage/sd_card/main/component.mk

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+#
+# "main" pseudo-component makefile.
+#
+# (Uses default behaviour of compiling all source files in directory, adding 'include' to include path.)

firmware/esp-idf/wumei-smart-firmware/examples/storage/sd_card/main/sd_card_example_main.c

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+/* SD card and FAT filesystem example.
+   This example code is in the Public Domain (or CC0 licensed, at your option.)
+
+   Unless required by applicable law or agreed to in writing, this
+   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+   CONDITIONS OF ANY KIND, either express or implied.
+*/
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/unistd.h>
+#include <sys/stat.h>
+#include "esp_err.h"
+#include "esp_log.h"
+#include "esp_vfs_fat.h"
+#include "driver/sdspi_host.h"
+#include "driver/spi_common.h"
+#include "sdmmc_cmd.h"
+#include "sdkconfig.h"
+
+#ifdef CONFIG_IDF_TARGET_ESP32
+#include "driver/sdmmc_host.h"
+#endif
+
+static const char *TAG = "example";
+
+#define MOUNT_POINT "/sdcard"
+
+// This example can use SDMMC and SPI peripherals to communicate with SD card.
+// By default, SDMMC peripheral is used.
+// To enable SPI mode, uncomment the following line:
+
+// #define USE_SPI_MODE
+
+// ESP32-S2 doesn't have an SD Host peripheral, always use SPI:
+#ifdef CONFIG_IDF_TARGET_ESP32S2
+#ifndef USE_SPI_MODE
+#define USE_SPI_MODE
+#endif // USE_SPI_MODE
+// on ESP32-S2, DMA channel must be the same as host id
+#define SPI_DMA_CHAN    host.slot
+#endif //CONFIG_IDF_TARGET_ESP32S2
+
+// DMA channel to be used by the SPI peripheral
+#ifndef SPI_DMA_CHAN
+#define SPI_DMA_CHAN    1
+#endif //SPI_DMA_CHAN
+
+// When testing SD and SPI modes, keep in mind that once the card has been
+// initialized in SPI mode, it can not be reinitialized in SD mode without
+// toggling power to the card.
+
+#ifdef USE_SPI_MODE
+// Pin mapping when using SPI mode.
+// With this mapping, SD card can be used both in SPI and 1-line SD mode.
+// Note that a pull-up on CS line is required in SD mode.
+#define PIN_NUM_MISO 2
+#define PIN_NUM_MOSI 15
+#define PIN_NUM_CLK  14
+#define PIN_NUM_CS   13
+#endif //USE_SPI_MODE
+
+void app_main(void)
+{
+    esp_err_t ret;
+    // Options for mounting the filesystem.
+    // If format_if_mount_failed is set to true, SD card will be partitioned and
+    // formatted in case when mounting fails.
+    esp_vfs_fat_sdmmc_mount_config_t mount_config = {
+#ifdef CONFIG_EXAMPLE_FORMAT_IF_MOUNT_FAILED
+        .format_if_mount_failed = true,
+#else
+        .format_if_mount_failed = false,
+#endif // EXAMPLE_FORMAT_IF_MOUNT_FAILED
+        .max_files = 5,
+        .allocation_unit_size = 16 * 1024
+    };
+    sdmmc_card_t* card;
+    const char mount_point[] = MOUNT_POINT;
+    ESP_LOGI(TAG, "Initializing SD card");
+
+    // Use settings defined above to initialize SD card and mount FAT filesystem.
+    // Note: esp_vfs_fat_sdmmc/sdspi_mount is all-in-one convenience functions.
+    // Please check its source code and implement error recovery when developing
+    // production applications.
+#ifndef USE_SPI_MODE
+    ESP_LOGI(TAG, "Using SDMMC peripheral");
+    sdmmc_host_t host = SDMMC_HOST_DEFAULT();
+
+    // This initializes the slot without card detect (CD) and write protect (WP) signals.
+    // Modify slot_config.gpio_cd and slot_config.gpio_wp if your board has these signals.
+    sdmmc_slot_config_t slot_config = SDMMC_SLOT_CONFIG_DEFAULT();
+
+    // To use 1-line SD mode, uncomment the following line:
+    // slot_config.width = 1;
+
+    // GPIOs 15, 2, 4, 12, 13 should have external 10k pull-ups.
+    // Internal pull-ups are not sufficient. However, enabling internal pull-ups
+    // does make a difference some boards, so we do that here.
+    gpio_set_pull_mode(15, GPIO_PULLUP_ONLY);   // CMD, needed in 4- and 1- line modes
+    gpio_set_pull_mode(2, GPIO_PULLUP_ONLY);    // D0, needed in 4- and 1-line modes
+    gpio_set_pull_mode(4, GPIO_PULLUP_ONLY);    // D1, needed in 4-line mode only
+    gpio_set_pull_mode(12, GPIO_PULLUP_ONLY);   // D2, needed in 4-line mode only
+    gpio_set_pull_mode(13, GPIO_PULLUP_ONLY);   // D3, needed in 4- and 1-line modes
+
+    ret = esp_vfs_fat_sdmmc_mount(mount_point, &host, &slot_config, &mount_config, &card);
+#else
+    ESP_LOGI(TAG, "Using SPI peripheral");
+
+    sdmmc_host_t host = SDSPI_HOST_DEFAULT();
+    spi_bus_config_t bus_cfg = {
+        .mosi_io_num = PIN_NUM_MOSI,
+        .miso_io_num = PIN_NUM_MISO,
+        .sclk_io_num = PIN_NUM_CLK,
+        .quadwp_io_num = -1,
+        .quadhd_io_num = -1,
+        .max_transfer_sz = 4000,
+    };
+    ret = spi_bus_initialize(host.slot, &bus_cfg, SPI_DMA_CHAN);
+    if (ret != ESP_OK) {
+        ESP_LOGE(TAG, "Failed to initialize bus.");
+        return;
+    }
+
+    // This initializes the slot without card detect (CD) and write protect (WP) signals.
+    // Modify slot_config.gpio_cd and slot_config.gpio_wp if your board has these signals.
+    sdspi_device_config_t slot_config = SDSPI_DEVICE_CONFIG_DEFAULT();
+    slot_config.gpio_cs = PIN_NUM_CS;
+    slot_config.host_id = host.slot;
+
+    ret = esp_vfs_fat_sdspi_mount(mount_point, &host, &slot_config, &mount_config, &card);
+#endif //USE_SPI_MODE
+
+    if (ret != ESP_OK) {
+        if (ret == ESP_FAIL) {
+            ESP_LOGE(TAG, "Failed to mount filesystem. "
+                "If you want the card to be formatted, set the EXAMPLE_FORMAT_IF_MOUNT_FAILED menuconfig option.");
+        } else {
+            ESP_LOGE(TAG, "Failed to initialize the card (%s). "
+                "Make sure SD card lines have pull-up resistors in place.", esp_err_to_name(ret));
+        }
+        return;
+    }
+
+    // Card has been initialized, print its properties
+    sdmmc_card_print_info(stdout, card);
+
+    // Use POSIX and C standard library functions to work with files.
+    // First create a file.
+    ESP_LOGI(TAG, "Opening file");
+    FILE* f = fopen(MOUNT_POINT"/hello.txt", "w");
+    if (f == NULL) {
+        ESP_LOGE(TAG, "Failed to open file for writing");
+        return;
+    }
+    fprintf(f, "Hello %s!\n", card->cid.name);
+    fclose(f);
+    ESP_LOGI(TAG, "File written");
+
+    // Check if destination file exists before renaming
+    struct stat st;
+    if (stat(MOUNT_POINT"/foo.txt", &st) == 0) {
+        // Delete it if it exists
+        unlink(MOUNT_POINT"/foo.txt");
+    }
+
+    // Rename original file
+    ESP_LOGI(TAG, "Renaming file");
+    if (rename(MOUNT_POINT"/hello.txt", MOUNT_POINT"/foo.txt") != 0) {
+        ESP_LOGE(TAG, "Rename failed");
+        return;
+    }
+
+    // Open renamed file for reading
+    ESP_LOGI(TAG, "Reading file");
+    f = fopen(MOUNT_POINT"/foo.txt", "r");
+    if (f == NULL) {
+        ESP_LOGE(TAG, "Failed to open file for reading");
+        return;
+    }
+    char line[64];
+    fgets(line, sizeof(line), f);
+    fclose(f);
+    // strip newline
+    char* pos = strchr(line, '\n');
+    if (pos) {
+        *pos = '\0';
+    }
+    ESP_LOGI(TAG, "Read from file: '%s'", line);
+
+    // All done, unmount partition and disable SDMMC or SPI peripheral
+    esp_vfs_fat_sdcard_unmount(mount_point, card);
+    ESP_LOGI(TAG, "Card unmounted");
+#ifdef USE_SPI_MODE
+    //deinitialize the bus after all devices are removed
+    spi_bus_free(host.slot);
+#endif
+}