修改了Web后台的部分界面，增加了HAmqtt中的总电量传感器，后台新增mqtt上报频率设置

mico-os/libraries/filesystem/FatFs/doc/img/app1.c

@@ -0,0 +1,43 @@
+/*------------------------------------------------------------/
+/ Open or create a file in append mode
+/------------------------------------------------------------*/
+
+FRESULT open_append (
+    FIL* fp,            /* [OUT] File object to create */
+    const char* path    /* [IN]  File name to be opened */
+)
+{
+    FRESULT fr;
+
+    /* Opens an existing file. If not exist, creates a new file. */
+    fr = f_open(fp, path, FA_WRITE | FA_OPEN_ALWAYS);
+    if (fr == FR_OK) {
+        /* Seek to end of the file to append data */
+        fr = f_lseek(fp, f_size(fp));
+        if (fr != FR_OK)
+            f_close(fp);
+    }
+    return fr;
+}
+
+
+int main (void)
+{
+    FRESULT fr;
+    FATFS fs;
+    FIL fil;
+
+    /* Open or create a log file and ready to append */
+    f_mount(&fs, "", 0);
+    fr = open_append(&fil, "logfile.txt");
+    if (fr != FR_OK) return 1;
+
+    /* Append a line */
+    f_printf(&fil, "%02u/%02u/%u, %2u:%02u\n", Mday, Mon, Year, Hour, Min);
+
+    /* Close the file */
+    f_close(&fil);
+
+    return 0;
+}
+

mico-os/libraries/filesystem/FatFs/doc/img/app2.c

@@ -0,0 +1,70 @@
+/*------------------------------------------------------------/
+/ Remove all contents of a directory
+/ This function works regardless of _FS_RPATH.
+/------------------------------------------------------------*/
+
+
+FRESULT empty_directory (
+    char* path      /* Working buffer filled with start directory */
+)
+{
+    UINT i, j;
+    FRESULT fr;
+    DIR dir;
+    FILINFO fno;
+
+#if _USE_LFN
+    fno.lfname = 0; /* Eliminate LFN output */
+#endif
+    fr = f_opendir(&dir, path);
+    if (fr == FR_OK) {
+        for (i = 0; path[i]; i++) ;
+        path[i++] = '/';
+        for (;;) {
+            fr = f_readdir(&dir, &fno);
+            if (fr != FR_OK || !fno.fname[0]) break;
+            if (fno.fname[0] == '.') continue;
+            j = 0;
+            do
+                path[i+j] = fno.fname[j];
+            while (fno.fname[j++]);
+            if (fno.fattrib & AM_DIR) {
+                fr = empty_directory(path);
+                if (fr != FR_OK) break;
+            }
+            fr = f_unlink(path);
+            if (fr != FR_OK) break;
+        }
+        path[--i] = '\0';
+        closedir(&dir);
+    }
+
+    return fr;
+}
+
+
+
+int main (void)
+{
+    FRESULT fr;
+    FATFS fs;
+    char buff[64];    /* Working buffer */
+
+
+
+    f_mount(&fs, "", 0);
+
+    strcpy(buff, "/");  /* Directory to be emptied */
+    fr = empty_directory(buff);
+
+    if (fr) {
+        printf("Function failed. (%u)\n", fr);
+        return 1;
+    } else {
+        printf("All contents in the %s are successfully removed.\n", buff);
+        return 0;
+    }
+}
+
+
+

mico-os/libraries/filesystem/FatFs/doc/img/app3.c

@@ -0,0 +1,106 @@
+/*----------------------------------------------------------------------/
+/ Allocate a contiguous area to the file
+/-----------------------------------------------------------------------/
+/ This function checks if the file is contiguous with desired size.
+/ If not, a block of contiguous sectors is allocated to the file.
+/ If the file has been opened without FA_WRITE flag, it only checks if
+/ the file is contiguous and returns the resulut. */
+
+#if _FATFS != 80960 /* Check if R0.10 */
+#error This function may not be compatible with this revision of FatFs module.
+#endif
+
+/* Declarations of FatFs internal functions accessible from applications.
+/  This is intended to be used for disk checking/fixing or dirty hacks :-) */
+DWORD clust2sect (FATFS* fs, DWORD clst);
+DWORD get_fat (FATFS* fs, DWORD clst);
+FRESULT put_fat (FATFS* fs, DWORD clst, DWORD val);
+
+
+DWORD allocate_contiguous_clusters (    /* Returns the first sector in LBA (0:error or not contiguous) */
+    FIL* fp,    /* Pointer to the open file object */
+    DWORD len   /* Number of bytes to allocate */
+)
+{
+    DWORD csz, tcl, ncl, ccl, cl;
+
+
+    if (f_lseek(fp, 0) || !len)     /* Check if the given parameters are valid */
+        return 0;
+    csz = 512UL * fp->fs->csize;    /* Cluster size in unit of byte (assuming 512 bytes/sector) */
+    tcl = (len + csz - 1) / csz;    /* Total number of clusters required */
+    len = tcl * csz;                /* Round-up file size to the cluster boundary */
+
+    /* Check if the existing cluster chain is contiguous */
+    if (len == fp->fsize) {
+        ncl = 0; ccl = fp->sclust;
+        do {
+            cl = get_fat(fp->fs, ccl);  /* Get the cluster status */
+            if (cl + 1 < 3) return 0;   /* Hard error? */
+            if (cl != ccl + 1 &&; cl < fp->fs->n_fatent) break;  /* Not contiguous? */
+            ccl = cl;
+        } while (++ncl < tcl);
+        if (ncl == tcl)             /* Is the file contiguous? */
+            return clust2sect(fp->fs, fp->sclust);  /* Return file start sector */
+    }
+#if _FS_READONLY
+    return 0;
+#else
+    if (f_truncate(fp)) return 0;   /* Remove the existing chain */
+
+    /* Find a free contiguous area */
+    ccl = cl = 2; ncl = 0;
+    do {
+        if (cl >= fp->fs->n_fatent) return 0;   /* No contiguous area is found. */
+        if (get_fat(fp->fs, cl)) {  /* Encounterd a cluster in use */
+            do {    /* Skip the block of used clusters */
+                cl++;
+                if (cl >= fp->fs->n_fatent) return 0;   /* No contiguous area is found. */
+            } while (get_fat(fp->fs, cl));
+            ccl = cl; ncl = 0;
+        }
+        cl++; ncl++;
+    } while (ncl < tcl);
+
+    /* Create a contiguous cluster chain */
+    fp->fs->last_clust = ccl - 1;
+    if (f_lseek(fp, len)) return 0;
+
+    return clust2sect(fp->fs, fp->sclust);  /* Return file start sector */
+#endif
+}
+
+
+int main (void)
+{
+    FRESULT fr;
+    DRESULT dr;
+    FATFS fs;
+    FIL fil;
+    DWORD org;
+
+
+    /* Open or create a file */
+    f_mount(&fs, "", 0);
+    fr = f_open(&fil, "swapfile.sys", FA_READ | FA_WRITE | FA_OPEN_ALWAYS);
+    if (fr) return 1;
+
+    /* Check if the file is 64MB in size and occupies a contiguous area.
+    /  If not, a contiguous area will be re-allocated to the file. */
+    org = allocate_contiguous_clusters(&fil, 0x4000000);
+    if (!org) {
+        printf("Function failed due to any error or insufficient contiguous area.\n");
+        f_close(&fil);
+        return 1;
+    }
+
+    /* Now you can read/write the file with disk functions bypassing the file system layer. */
+
+    dr = disk_write(fil.fs->drv, Buff, org, 1024);   /* Write 512Ki bytes from top of the file */
+
+    ...
+
+    f_close(&fil);
+    return 0;
+}
+