Diff: main.cpp

Revision:

0:308d4fafaafb

Child:

1:58fc0cbd9a41

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Apr 07 01:41:49 2018 +0000
@@ -0,0 +1,136 @@
+/*
+ * Mbed Application program
+ *  RAM Disck function with FatFs on Mbed-os5
+ *
+ * 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 --------------------------------------------------------------------
+#include    "mbed.h"
+#include    "FATFileSystem.h"
+#include    "HeapBlockDevice.h"
+#include    "mon.h"
+#include    <stdlib.h>
+#include    <stdio.h>
+#include    <errno.h>
+
+//  Definition -----------------------------------------------------------------
+#if defined(TARGET_DISCO_F769NI)
+#define     USER_SW_ON      1
+#else
+#define     USER_SW_ON      0
+#endif
+
+#define     DISK_SIZE_LIMIT     (5 * 512)
+
+//  Constructor ----------------------------------------------------------------
+DigitalOut      led(LED1);
+DigitalIn       user_sw(USER_BUTTON);
+Serial          pc(USBTX, USBRX, 115200);
+HeapBlockDevice bd(128 * 512, 512);     // Keep 64KB area
+FATFileSystem   fs("fs");
+
+//  RAM ------------------------------------------------------------------------
+
+//  ROM / Constant data --------------------------------------------------------
+char *const opening_msg0 = "RAM Disk (use Heap area) test program";
+char *const opening_msg1 = " -> run on Mbed OS-5\r\n";
+
+//  Function prototypes --------------------------------------------------------
+void return_error (int ret_val);
+void errno_error (void* ret_val);
+
+//------------------------------------------------------------------------------
+//  Control Program
+//------------------------------------------------------------------------------
+int main()
+{
+    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;
+    pc.printf("Welcome to the filesystem example.\r\n");
+    pc.printf("Mounting the filesystem on \"/fs\". \r\n");
+    pc.printf("Formatting a FAT, RAM-backed filesystem.\r\n");
+    error = FATFileSystem::format(&bd);
+    return_error(error);
+    pc.printf("Mounting the filesystem on \"/fs\". \r\n");
+    error = fs.mount(&bd);
+    return_error(error);
+
+    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");
+    }
+    fclose(fp);
+    while (pc.readable()) {
+        char c = pc.getc(); // dummy read
+    }
+    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;
+    }
+    while(true) {
+        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);
+    }
+}