添加智能灯固件代码

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

@@ -0,0 +1,8 @@
+idf_component_register(SRCS "spiffsgen_example_main.c"
+                    INCLUDE_DIRS ".")
+
+# Create a SPIFFS image from the contents of the 'spiffs_image' directory
+# that fits the partition named 'storage'. FLASH_IN_PROJECT indicates that
+# the generated image should be flashed when the entire project is flashed to
+# the target with 'idf.py -p PORT flash'. 
+spiffs_create_partition_image(storage ../spiffs_image FLASH_IN_PROJECT)

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

@@ -0,0 +1,4 @@
+#
+# "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/spiffsgen/main/spiffsgen_example_main.c

@@ -0,0 +1,131 @@
+/* SPIFFS Image Generation on Build 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_spiffs.h"
+#include "mbedtls/md5.h"
+
+static const char *TAG = "example";
+
+static void read_hello_txt(void)
+{
+    ESP_LOGI(TAG, "Reading hello.txt");
+
+    // Open for reading hello.txt
+    FILE* f = fopen("/spiffs/hello.txt", "r");
+    if (f == NULL) {
+        ESP_LOGE(TAG, "Failed to open hello.txt");
+        return;
+    }
+
+    char buf[64];
+    memset(buf, 0, sizeof(buf));
+    fread(buf, 1, sizeof(buf), f);
+    fclose(f);
+
+    // Display the read contents from the file
+    ESP_LOGI(TAG, "Read from hello.txt: %s", buf);
+}
+
+static void compute_alice_txt_md5(void)
+{
+    ESP_LOGI(TAG, "Computing alice.txt MD5 hash");
+
+    // The file alice.txt lives under a subdirectory, though SPIFFS itself is flat
+    FILE* f = fopen("/spiffs/sub/alice.txt", "r");
+    if (f == NULL) {
+        ESP_LOGE(TAG, "Failed to open alice.txt");
+        return;
+    }
+
+    // Read file and compute the digest chunk by chunk
+    #define MD5_MAX_LEN 16
+
+    char buf[64];
+    mbedtls_md5_context ctx;
+    unsigned char digest[MD5_MAX_LEN];
+
+    mbedtls_md5_init(&ctx);
+    mbedtls_md5_starts_ret(&ctx);
+
+    size_t read;
+
+    do {
+        read = fread((void*) buf, 1, sizeof(buf), f);
+        mbedtls_md5_update_ret(&ctx, (unsigned const char*) buf, read);
+    } while(read == sizeof(buf));
+
+    mbedtls_md5_finish_ret(&ctx, digest);
+
+    // Create a string of the digest
+    char digest_str[MD5_MAX_LEN * 2];
+
+    for (int i = 0; i < MD5_MAX_LEN; i++) {
+        sprintf(&digest_str[i * 2], "%02x", (unsigned int)digest[i]);
+    }
+
+    // For reference, MD5 should be deeb71f585cbb3ae5f7976d5127faf2a
+    ESP_LOGI(TAG, "Computed MD5 hash of alice.txt: %s", digest_str);
+
+    fclose(f);
+}
+
+void app_main(void)
+{
+    ESP_LOGI(TAG, "Initializing SPIFFS");
+
+    esp_vfs_spiffs_conf_t conf = {
+      .base_path = "/spiffs",
+      .partition_label = NULL,
+      .max_files = 5,
+      .format_if_mount_failed = false
+    };
+
+    // Use settings defined above to initialize and mount SPIFFS filesystem.
+    // Note: esp_vfs_spiffs_register is an all-in-one convenience function.
+    esp_err_t ret = esp_vfs_spiffs_register(&conf);
+
+    if (ret != ESP_OK) {
+        if (ret == ESP_FAIL) {
+            ESP_LOGE(TAG, "Failed to mount or format filesystem");
+        } else if (ret == ESP_ERR_NOT_FOUND) {
+            ESP_LOGE(TAG, "Failed to find SPIFFS partition");
+        } else {
+            ESP_LOGE(TAG, "Failed to initialize SPIFFS (%s)", esp_err_to_name(ret));
+        }
+        return;
+    }
+
+    size_t total = 0, used = 0;
+    ret = esp_spiffs_info(NULL, &total, &used);
+    if (ret != ESP_OK) {
+        ESP_LOGE(TAG, "Failed to get SPIFFS partition information (%s)", esp_err_to_name(ret));
+    } else {
+        ESP_LOGI(TAG, "Partition size: total: %d, used: %d", total, used);
+    }
+
+    /* The following calls demonstrate reading files from the generated SPIFFS
+     * image. The images should contain the same files and contents as the spiffs_image directory.
+     */
+
+    // Read and display the contents of a small text file (hello.txt)
+    read_hello_txt();
+
+    // Compute and display the MD5 hash of a large text file (alice.txt) 
+    compute_alice_txt_md5();
+
+    // All done, unmount partition and disable SPIFFS
+    esp_vfs_spiffs_unregister(NULL);
+    ESP_LOGI(TAG, "SPIFFS unmounted");
+}