Diff: main.cpp

Revision:

0:2661952973e6

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Apr 30 05:43:40 2018 +0000
@@ -0,0 +1,166 @@
+/*
+ * Mbed Application program
+ *
+ * Copyright (c) 2018 Kenji Arai / JH1PJL
+ *  http://www.page.sannet.ne.jp/kenjia/index.html
+ *  http://mbed.org/users/kenjiArai/
+ *      Modify:     March     21st, 2018
+ *      Revised:    April     30th, 2018
+ */
+
+//  Include --------------------------------------------------------------------
+#include    "mbed.h"
+#include    "USBHostMSD.h"
+#include    "FATFileSystem.h"
+#include    "mon.h"
+#include    <stdlib.h>
+
+//  Definition -----------------------------------------------------------------
+
+//  Object ---------------------------------------------------------------------
+DigitalOut  led(LED1);
+DigitalIn   user_sw(USER_BUTTON);
+Serial      pc(USBTX,USBRX);
+USBHostMSD  msd;
+DigitalOut  usb_5v_line(PB_2, 1);
+
+//  RAM ------------------------------------------------------------------------
+uint8_t     usb_memory_status;
+time_t      seconds;
+// ADC
+float       v5;
+float       v3r3;
+
+bool running = true;
+
+//  ROM / Constant data --------------------------------------------------------
+char *const opngmsg =
+    ""__FILE__ "\r\n"__DATE__ " " __TIME__ " (UTC)\r\n""\r\n";
+
+//  Function prototypes --------------------------------------------------------
+void save_logging_data(uint8_t flg);
+void msd_task(void const *);
+void mon(void);
+
+//------------------------------------------------------------------------------
+//  Control Program
+//------------------------------------------------------------------------------
+int main()
+{
+    pc.puts(opngmsg);
+    Thread msdTask(msd_task, NULL, osPriorityNormal, 1024 * 4);
+    while(true) {
+        led=!led;
+        Thread::wait(500);
+        if (running == false) {
+            mon();
+            NVIC_SystemReset();
+        }
+    }
+}
+
+void msd_task(void const *)
+{
+    int i = 0;
+    FATFileSystem fs("usb");
+    int err;
+
+    pc.printf("wait for usb memory stick insertion\r\n");
+    while(1) {
+
+        // try to connect a MSD device
+        while(!msd.connect()) {
+            Thread::wait(500);
+        }
+        if (fs.mount(&msd) != 0) {
+            continue;
+        } else {
+            pc.printf("file system mounted\r\n");
+        }
+        if  (!msd.connect()) {
+            continue;
+        }
+        running = true;
+        // if device disconnected, try to connect again
+        while (msd.connected()) {
+            save_logging_data(1);
+            if (user_sw == 1) {
+                break;
+            }
+            if (pc.readable()) {
+                char c = pc.getc(); // dummy read
+                mon();
+            }
+            Thread::wait(500);
+        }
+        running = false;
+        while (msd.connected()) {
+            Thread::wait(500);
+        }
+        while (fs.unmount() < 0) {
+            Thread::wait(500);
+            pc.printf("unmount\r\n");
+        }
+    }
+}
+
+// Save several data into the USB Memory
+void save_logging_data(uint8_t flg)
+{
+    char buf[64];   // data buffer for text
+    FILE *fp;
+
+    if (!msd.connect()) {
+        error("USB Flash drive not found.\r\n");
+        usb_memory_status = 1;
+    }
+    fp = fopen("/usb/mydata.txt", "a");
+    if (flg) {
+        pc.printf("/usb/mydata.txt\r\n");
+    }
+    if(fp == NULL) {
+        usb_memory_status = 1;
+        if (flg) {
+            pc.printf( "\r\n Could not open file for write\r\n");
+        }
+    }
+    for (int i = 0; 16 > i; i++) {
+        uint32_t size = get_disk_freespace();
+        pc.printf("free %u kB, ", size);
+        //v3r3 = VREF_VOLT / a_vref.read();
+        v3r3 = 3.321f;
+        //v5 = a_5v.read() * v3r3 * FCT_V5;
+        v5 = 5.012f;
+        sprintf(buf, "$DATA0,");
+        fprintf(fp,buf);
+        // RTC
+        seconds = time(NULL);
+        strftime(buf, 64, "RTC,%H:%M:%S,%Y/%m/%d,", localtime(&seconds));
+        if (flg) {
+            pc.printf("%s", buf);
+        }
+        fprintf(fp,buf);
+        // Write speration ',' into the file
+        //            123456789012345678901234567890
+        sprintf(buf, ",,,,,,,,,,,,,,,,,,,,,,,,,,,,");
+        fprintf(fp,buf);
+        // Write data into the file
+        sprintf(buf, "5V,%6.3f,V3R3,%6.3f,", v5, v3r3);
+        fprintf(fp,buf);
+        if (flg) {
+            pc.printf("Volt, %s", buf);
+        }
+        sprintf(buf, "GPS,%d,USB,%d,CAM,%d,CNT,%04d\r\n",
+                0, usb_memory_status, 1, i);
+        fprintf(fp,buf);
+        fprintf(fp,buf);
+        if (flg) {
+            pc.printf("%s", buf);
+        }
+    }
+    fclose(fp);
+    if (flg) {
+        pc.printf("\r\n");
+    }
+}
+