Diff: utils.cpp

Revision:

17:98f2528e8399

Child:

19:9f035b9e65ec

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/utils.cpp	Fri Feb 23 12:57:25 2018 +0000
@@ -0,0 +1,207 @@
+/*
+ * Copyright (c) 2018 Helmut Tschemernjak
+ * 30826 Garbsen (Hannover) Germany
+ */
+ #include "main.h"
+ 
+time_t cvt_date(char const *date, char const *time);
+
+BufferedSerial *ser;
+#ifdef FEATURE_USBSERIAL
+USBSerialBuffered *usb;
+#endif
+bool _useDprintf;
+
+void InitSerial(int timeout, DigitalOut *led)
+{
+    _useDprintf = true;
+    bool uartActive;
+    {
+        {
+            // need to turn rx low to avoid floating signal
+            DigitalOut rx(USBRX);
+            rx = 0;
+        }
+        DigitalIn uartRX(USBRX);
+        uartActive = uartRX.read();
+    }
+#ifdef FEATURE_USBSERIAL
+    if (!uartActive) {
+        usb = new USBSerialBuffered();
+        Timer t;
+        t.start();
+        while(!usb->connected()) {
+            if (led)
+                *led = !*led;
+            wait_ms(100);
+            if (timeout) {
+                if (t.read_ms() >= timeout)
+                    return;
+            }
+        }
+        return;
+    } else {
+#else
+    {
+#endif
+        ser = new BufferedSerial(USBTX, USBRX);
+        ser->baud(230400);
+        ser->format(8);
+    }
+    time_t t = cvt_date(__DATE__, __TIME__);
+    if (t > time(NULL)) {
+        set_time(t);
+    }
+
+}
+
+void printTimeStamp()
+{
+    static LowPowerTimer *timer;
+    if (!timer) {
+        timer = new LowPowerTimer();
+        timer->start();
+    }
+    time_t seconds = time(NULL);
+    struct tm *tm = localtime(&seconds);
+    int usecs = timer->read_us();
+    if (usecs < 0) {
+        usecs = 0;
+        timer->stop();
+        timer->reset();
+        timer->start();
+    }
+    int msecs = usecs % 1000000;
+    
+    rprintf("%02d:%02d:%02d.%06d ", tm->tm_hour, tm->tm_min, tm->tm_sec, msecs);
+}
+
+void dprintf(const char *format, ...)
+{
+    std::va_list arg;
+
+    va_start(arg, format);
+    VAprintf(true, true, _useDprintf, format, arg);
+    va_end(arg);
+}
+
+void rprintf(const char *format, ...)
+{
+    std::va_list arg;
+
+    va_start(arg, format);
+    VAprintf(false, false, _useDprintf, format, arg);
+    va_end(arg);   
+}
+
+void VAprintf(bool timstamp, bool newline, bool printEnabled, const char *format, va_list arg)
+{
+     if (!printEnabled)
+        return;
+
+    if (timstamp)
+        printTimeStamp();
+#ifdef FEATURE_USBSERIAL
+    if (usb) {
+        usb->vprintf_irqsafe(format, arg);
+        if (newline)
+            usb->printf_irqsafe("\r\n");
+#else
+    if (0) {
+#endif
+    } else if (ser) {
+        // serial jas 
+        int r = 0;
+        r = vsnprintf(NULL, 0, format, arg);
+        if (r < 82) {
+            char buffer[82+1];
+
+            vsnprintf(buffer, sizeof(buffer), format, arg);
+            r = ser->write(buffer, r);
+        } else {
+            char *buffer = new char[r+1];
+            if (buffer) {
+                vsnprintf(buffer, r+1, format, arg);
+                r = ser->write(buffer, r);
+                delete[] buffer;
+            } else {
+                error("%s %d cannot alloc memory (%d bytes)!\r\n", __FILE__, __LINE__, r+1);
+                r = 0;
+            }
+        }
+        if (newline)
+            ser->write("\r\n", 2);
+    }
+}
+
+
+void dump(const char *title, const void *data, int len, bool dwords)
+{
+    dprintf("dump(\"%s\", 0x%x, %d bytes)", title, data, len);
+
+    int i, j, cnt;
+    unsigned char *u;
+    const int width = 16;
+    const int seppos = 7;
+
+    cnt = 0;
+    u = (unsigned char *)data;
+    while (len > 0) {
+        rprintf("%08x: ", (unsigned int)data + cnt);
+        if (dwords) {
+            unsigned int *ip = ( unsigned int *)u;
+            rprintf(" 0x%08x\r\n", *ip);
+            u+= 4;
+            len -= 4;
+            cnt += 4;
+            continue;
+        }
+        cnt += width;
+        j = len < width ? len : width;
+        for (i = 0; i < j; i++) {
+            rprintf("%2.2x ", *(u + i));
+            if (i == seppos)
+                rprintf(" ");
+        }
+        rprintf(" ");
+        if (j < width) {
+            i = width - j;
+            if (i > seppos + 1)
+                rprintf(" ");
+            while (i--) {
+                rprintf("%s", "   ");
+            }
+        }
+        for (i = 0; i < j; i++) {
+            int c = *(u + i);
+            if (c >= ' ' && c <= '~')
+                rprintf("%c", c);
+            else
+                rprintf(".");
+            if (i == seppos)
+                rprintf(" ");
+        }
+        len -= width;
+        u += width;
+        rprintf("\r\n");
+    }
+    rprintf("--\r\n");
+}
+
+/*
+ * Convert compile time to system time
+ */
+time_t
+cvt_date(char const *date, char const *time)
+{
+    char s_month[5];
+    int year;
+    struct tm t;
+    static const char month_names[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
+    sscanf(date, "%s %d %d", s_month, &t.tm_mday, &year);
+    sscanf(time, "%2d %*c %2d %*c %2d", &t.tm_hour, &t.tm_min, &t.tm_sec);
+    // Find where is s_month in month_names. Deduce month value.
+    t.tm_mon = (strstr(month_names, s_month) - month_names) / 3;
+    t.tm_year = year - 1900;
+    return (int)mktime(&t);
+}