Diff: main.cpp

Revision:

4:0f7797c2d3fe

Parent:

3:7f991a3d4e71

Child:

5:5c29a3f6600b

--- a/main.cpp	Wed Apr 04 19:49:22 2018 +0000
+++ b/main.cpp	Sat Apr 07 02:10:18 2018 +0000
@@ -1,115 +1,127 @@
-/* Example file of using SD/MMC Block device Library for MBED-OS
- * Copyright 2017 Roy Krikke
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
+/*
+ * Mbed Application program
+ *  SD Card file control function with FatFs on Mbed-os5
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
+ * Copyright (c) 2018 Kenji Arai / JH1PJL
+ *  http://www.page.sannet.ne.jp/kenjia/index.html
+ *  https://os.mbed.com/users/kenjiArai/
+ *      Created:    April      7th, 2018
+ *      Revised:    April      7th, 2018
  */
 
-#include "mbed.h"
-#include "FATFileSystem.h"
-#include "SDBlockDeviceDISCOF746NG.h"
-#include <stdio.h>
-#include <errno.h>
+//  Include --------------------------------------------------------------------
+#include    "mbed.h"
+#include    "FATFileSystem.h"
+#include    "SDBlockDeviceDISCOF769NI.h"
+#include    "mon.h"
+#include    <stdlib.h>
+#include    <stdio.h>
+#include    <errno.h>
 
-DigitalOut led (LED1);
+//  Definition -----------------------------------------------------------------
+#define     USER_SW_ON      1
 
-// Instantiate the Block Device for sd card on DISCO-F746NG
-SDBlockDeviceDISCOF746NG bd;
-FATFileSystem fs ("fs");
+//  Constructor ----------------------------------------------------------------
+DigitalOut      led(LED1);
+DigitalIn       user_sw(USER_BUTTON);
+Serial          pc(USBTX, USBRX, 115200);
+// Instantiate the Block Device for sd card on DISCO-F769NI
+SDBlockDeviceDISCOF769NI bd;
+FATFileSystem   fs("fs");
 
-void
-return_error (int ret_val)
-{
-    if(ret_val)
-        printf ("Failure. %d\r\n", ret_val);
-    else
-        printf ("done.\r\n");
-}
+//  RAM ------------------------------------------------------------------------
+
+//  ROM / Constant data --------------------------------------------------------
+char *const opening_msg0 = "microSD Card test program";
+char *const opening_msg1 = " -> run on Mbed OS-5\r\n";
 
-void
-errno_error (void* ret_val)
-{
-    if(ret_val == NULL)
-        printf (" Failure. %d \r\n", errno);
-    else
-        printf (" done.\r\n");
-}
+//  Function prototypes --------------------------------------------------------
+void return_error (int ret_val);
+void errno_error (void* ret_val);
 
-int
-main ()
+//------------------------------------------------------------------------------
+//  Control Program
+//------------------------------------------------------------------------------
+int main()
 {
-    Serial pc (SERIAL_TX, SERIAL_RX);
-    pc.baud(115200);
-    printf("Start\n");
+    time_t      seconds;
+    uint32_t data0 = 10000U;
+    uint32_t data1 = 20000U;
+    uint32_t data2 = 30000U;
+    uint32_t data3 = 40000U;
+    uint32_t data4 = 50000U;
+    uint32_t data5 = 60000U;
 
+    if (user_sw == USER_SW_ON) {
+        mon();
+    }
+    //pc.printf("line:%d\r\n", __LINE__);
+    pc.printf("\r\nStart\r\n");
     int error = 0;
-    printf("Welcome to the filesystem example.\r\n"
-           "Formatting a FAT, RAM-backed filesystem. ");
-    error = FATFileSystem::format(&bd);
-    return_error(error);
-
-    printf("Mounting the filesystem on \"/fs\". ");
+    pc.printf("Welcome to the filesystem example.\r\n");
+    pc.printf("Mounting the filesystem on \"/fs\". \r\n");
     error = fs.mount(&bd);
     return_error(error);
 
-    printf("Opening a new file, numbers.txt.");
-    FILE* fd = fopen("/fs/numbers.txt", "w");
-    errno_error(fd);
-
-    for (int i = 0; i < 20; i++) {
-        printf("Writing decimal numbers to a file (%d/20)\r", i);
-        fprintf(fd, "%d\r\n", i);
+    FILE* fp = fopen("/fs/mydata.txt", "a");
+    errno_error(fp);
+    if (fp != 0) {
+        pc.printf("%s%s",  opening_msg0, opening_msg1);
+        fprintf(fp,"%s%s", opening_msg0, opening_msg1);
+    } else {
+        pc.printf("ERROR\r\n");
     }
-    printf("Writing decimal numbers to a file (20/20) done.\r\n");
-
-    printf("Closing file.");
-    fclose(fd);
-    printf(" done.\r\n");
-
-    printf("Re-opening file read-only.");
-    fd = fopen("/fs/numbers.txt", "r");
-    errno_error(fd);
-
-    printf("Dumping file to screen.\r\n");
-    char buff[16] = { 0 };
-    while(!feof (fd)) {
-        int size = fread(&buff[0], 1, 15, fd);
-        fwrite(&buff[0], 1, size, stdout);
+    fclose(fp);
+    while (pc.readable()) {
+        char c = pc.getc(); // dummy read
     }
-    printf("EOF.\r\n");
-
-    printf("Closing file.");
-    fclose(fd);
-    printf(" done.\r\n");
-
-    printf("Opening root directory.");
-    DIR* dir = opendir("/fs/");
-    errno_error(fd);
-
-    struct dirent* de;
-    printf("Printing all filenames:\r\n");
-    while((de = readdir (dir)) != NULL) {
-        printf("  %s\r\n", &(de->d_name)[0]);
+    while (true) {
+        uint32_t size = get_disk_freespace();
+        pc.printf("free %u  ", size);
+        fp = fopen("/fs/mydata.txt", "a");
+        /*if (size <= DISK_SIZE_LIMIT) {
+            pc.printf("Reached RAM Disk size limitation!!\r\n");
+            break;
+        }*/
+        if(fp != 0) {
+            char tmp[64];
+            seconds = time(NULL);
+            strftime(tmp, 64, "DATE %H:%M:%S,%Y/%m/%d,", localtime(&seconds));
+            pc.printf(tmp);
+            fprintf(fp, "%s", tmp);
+            pc.printf("%08d;%08d;%08d;%08d;%08d;%08d\r\n",
+                      ++data0, ++data1, ++data2, ++data3, ++data4, ++data5);
+            fprintf(fp, "%08d;%08d;%08d;%08d;%08d;%08d\r\n",
+                        data0,   data1,   data2,   data3,   data4,   data5);
+        } else {
+            pc.printf("ERROR\r\n");
+        }
+        fclose(fp);
+        Thread::wait(100);
+        if (user_sw == USER_SW_ON) {
+            break;
+        }
+        if (pc.readable()) {
+            mon();
+        }
+        led = !led;
     }
-
-    printf("Closeing root directory. ");
-    error = closedir(dir);
-    return_error(error);
-    printf("Filesystem Demo complete.\r\n");
-
-    // Blink led with 2 Hz
     while(true) {
-        led = !led;
-        wait (0.5);
+        mon();
+        NVIC_SystemReset();
     }
 }
+
+void return_error (int ret_val)
+{
+    if (ret_val) {
+        pc.printf("retrun error/Failure. %d\r\n", ret_val);
+    }
+}
+
+void errno_error (void* ret_val)
+{
+    if (ret_val == NULL) {
+        pc.printf("error #/Failure. %d \r\n", errno);
+    }
+}