Diff: Line.cpp

Revision:

1:0f82c574096f

Parent:

0:f18953137cb4

Child:

2:e37117117e79

--- a/Line.cpp	Mon Dec 20 22:55:29 2010 +0000
+++ b/Line.cpp	Sun Dec 26 15:49:07 2010 +0000
@@ -1,214 +1,214 @@
-#include "Line.h"
-
-#define RING_ON FREQ
-#define RING_OFF (FREQ * 3)
-#define RING_PULSE (FREQ / 16)
-#define TONE_DT (FREQ / 400)
-#define TONE_RBT_ON FREQ
-#define TONE_RBT_OFF (FREQ * 3)
-#define TONE_BT_ON (FREQ / 2)
-#define TONE_BT_OFF FREQ
-#define HOOK_TIME FREQ
-#define DIAL_TIME (FREQ / 2)
-
-const unsigned short tonetable[TONE_DT] = {
-	0x7fff, 0x98f4, 0xaf78, 0xc156, 0xcccf, 0xd0c3, 0xcccf, 0xc156, 0xaf78, 0x98f4,
-	0x7fff, 0x6709, 0x5085, 0x3ea7, 0x332e, 0x2f3a, 0x332e, 0x3ea7, 0x5085, 0x6709
-};
-
-Line::Line (PinName p_line, PinName p_xline, PinName p_hook, AnalogOut p_dac) : line(p_line), xline(p_xline), hook(p_hook), dac(p_dac), dial(DIAL_SIZE) {
-    hook.mode(PullUp);
-	mode = ModeOff;
-	status = StatusOk;
-	dialtimer = 0;
-	dialcount = 0;
-	hooktimer = 0;
-	tonecount = 0;
-	hook_last = hook;
-}
-
-/// 8KHz interrupt
-void Line::poll () {
-
-	switch (mode) {
-	case ModeRing:
-		ring();
-		break;
-
-	case ModeDT:
-		tone(DialTone);
-		break;
-
-	case ModeRBT:
-		tone(RingBackTone);
-		break;
-
-	case ModeDisconnect:
-		tone(BusyTone);
-		break;
-
-	}
-
-	if (hook) {
-		// off hook
-		if (hooktimer) hooktimer --;
-
-		if (! hook_last) {
-			// dial trigger
-			dialtimer = DIAL_TIME;
-			dialcount ++;
-		}
-	} else {
-		// on hook
-		hooktimer = HOOK_TIME;
-	}
-	hook_last = hook;
-
-	if (dialtimer) {
-		dialtimer --;
-
-		if (dialtimer == 0 && dialcount && ! hook) {
-			// dial detected
-			dial.put(dialcount);
-			dialcount = 0;
-		}
-	} else {
-		dialcount = 0;
-	}
-}
-
-/// change mode
-int Line::enter (enum Mode newmode) {
-
-	// cleanup
-	switch (mode) {
-	case ModeRing:
-	case ModeOff:
-		power(1);
-		break;
-
-	case ModeDT:
-	case ModeRBT:
-	case ModeBT:
-		dac = 0x7fff;
-		break;
-
-	}
-
-	mode = newmode;
-
-	switch (mode) {
-	case ModeReady:
-		// ready
-		power(1);
-		status = StatusOk;
-		break;
-
-	case ModeDT:
-	case ModeRBT:
-	case ModeBT:
-		// tone
-		tonecount = 0;
-		status = StatusOk;
-		break;
-
-	case ModeOff:
-		// suspend
-		power(0);
-		status = StatusOk;
-		break;
-
-	default:
-		status = StatusOk;
-		break;
-
-	}
-
-	return 0;
-}
-
-/// return status
-int Line::scan (enum Scan type) {
-
-	switch (type) {
-	case ScanMode:
-		return (int)mode;
-
-	case ScanStatus:
-		return (int)status;
-
-	case ScanHook:
-		return hooktimer ? HookOn : HookOff;
-
-	case ScanDial:
-		char c;
-		if (! dial.get(c)) {
-			return c;
-	    }
-		break;
-
-	}
-
-	return -1;
-}
-
-/// controll power
-void Line::power (int flg) {
-	if (flg > 0) {
-		xline = 0;
-		wait_ms(1);
-		line = 1;
-	} else
-	if (flg < 0) {
-		line = 0;
-		wait_ms(1);
-		xline = 1;
-	} else {
-		line = 0;
-		xline = 0;
-	}
-}
-
-/// ring
-void Line::ring () {
-	if (hook && tonecount < RING_ON) {
-		// off hook
-		switch (tonecount % RING_PULSE) {
-		case 0:
-			Line::power(0);
-			break;
-		case RING_PULSE / 10:
-			Line::power(-1);
-			break;
-		case RING_PULSE / 2:
-			Line::power(0);
-			break;
-		case RING_PULSE / 2 + RING_PULSE / 10:
-			Line::power(1);
-			break;
-		}
-	}
-
-	tonecount ++;
-	if (tonecount >= RING_OFF) tonecount = 0;
-}
-
-/// tone
-void Line::tone (enum Tone type) {
-	if (! hook && ( type == DialTone ||
-	  (type == RingBackTone && tonecount < TONE_RBT_ON) ||
-	  (type == BusyTone && tonecount < TONE_BT_ON) ) ) {
-		// on hook
-		dac.write_u16(tonetable[tonecount % TONE_DT]);
-	} else {
-		// off hook
-		dac.write_u16(0x7fff);
-	}
-
-	tonecount ++;
-	if ( (type == DialTone && tonecount >= TONE_DT) ||
-	  (type == RingBackTone && tonecount >= TONE_RBT_OFF) ||
-	  (type == BusyTone && tonecount >= TONE_BT_OFF) ) {
-		tonecount = 0;
-	}
-}
+#include "Line.h"
+
+#define RING_ON FREQ
+#define RING_OFF (FREQ * 3)
+#define RING_PULSE (FREQ / 16)
+#define TONE_DT (FREQ / 400)
+#define TONE_RBT_ON FREQ
+#define TONE_RBT_OFF (FREQ * 3)
+#define TONE_BT_ON (FREQ / 2)
+#define TONE_BT_OFF FREQ
+#define HOOK_TIME FREQ
+#define DIAL_TIME (FREQ / 2)
+
+const unsigned short tonetable[TONE_DT] = {
+    0x7fff, 0x98f4, 0xaf78, 0xc156, 0xcccf, 0xd0c3, 0xcccf, 0xc156, 0xaf78, 0x98f4,
+    0x7fff, 0x6709, 0x5085, 0x3ea7, 0x332e, 0x2f3a, 0x332e, 0x3ea7, 0x5085, 0x6709
+};
+
+Line::Line (PinName p_line, PinName p_xline, PinName p_hook, AnalogOut p_dac) : line(p_line), xline(p_xline), hook(p_hook), dac(p_dac), dial(DIAL_SIZE) {
+    hook.mode(PullUp);
+    mode = ModeOff;
+    status = StatusOk;
+    dialtimer = 0;
+    dialcount = 0;
+    hooktimer = 0;
+    tonecount = 0;
+    hook_last = hook;
+}
+
+/// 8KHz interrupt
+void Line::poll () {
+
+    switch (mode) {
+    case ModeRing:
+        ring();
+        break;
+
+    case ModeDT:
+        tone(DialTone);
+        break;
+
+    case ModeRBT:
+        tone(RingBackTone);
+        break;
+
+    case ModeBT:
+        tone(BusyTone);
+        break;
+
+    }
+
+    if (hook) {
+        // off hook
+        if (hooktimer) hooktimer --;
+
+        if (! hook_last) {
+            // dial trigger
+            dialtimer = DIAL_TIME;
+            dialcount ++;
+        }
+    } else {
+        // on hook
+        hooktimer = HOOK_TIME;
+    }
+    hook_last = hook;
+
+    if (dialtimer) {
+        dialtimer --;
+
+        if (dialtimer == 0 && dialcount && ! hook) {
+            // dial detected
+            dial.put(dialcount);
+            dialcount = 0;
+        }
+    } else {
+        dialcount = 0;
+    }
+}
+
+/// change mode
+int Line::enter (enum Mode newmode) {
+
+    // cleanup
+    switch (mode) {
+    case ModeRing:
+    case ModeOff:
+        power(1);
+        break;
+
+    case ModeDT:
+    case ModeRBT:
+    case ModeBT:
+        dac = 0x7fff;
+        break;
+
+    }
+
+    mode = newmode;
+
+    switch (mode) {
+    case ModeReady:
+        // ready
+        power(1);
+        status = StatusOk;
+        break;
+
+    case ModeDT:
+    case ModeRBT:
+    case ModeBT:
+        // tone
+        tonecount = 0;
+        status = StatusOk;
+        break;
+
+    case ModeOff:
+        // suspend
+        power(0);
+        status = StatusOk;
+        break;
+
+    default:
+        status = StatusOk;
+        break;
+
+    }
+
+    return 0;
+}
+
+/// return status
+int Line::scan (enum Scan type) {
+
+    switch (type) {
+    case ScanMode:
+        return (int)mode;
+
+    case ScanStatus:
+        return (int)status;
+
+    case ScanHook:
+        return hooktimer ? HookOn : HookOff;
+
+    case ScanDial:
+        char c;
+        if (! dial.get(c)) {
+            return c;
+        }
+        break;
+
+    }
+
+    return -1;
+}
+
+/// controll power
+void Line::power (int flg) {
+    if (flg > 0) {
+        xline = 0;
+        wait_ms(1);
+        line = 1;
+    } else
+    if (flg < 0) {
+        line = 0;
+        wait_ms(1);
+        xline = 1;
+    } else {
+        line = 0;
+        xline = 0;
+    }
+}
+
+/// ring
+void Line::ring () {
+    if (hook && tonecount < RING_ON) {
+        // off hook
+        switch (tonecount % RING_PULSE) {
+        case 0:
+            Line::power(0);
+            break;
+        case RING_PULSE / 10:
+            Line::power(-1);
+            break;
+        case RING_PULSE / 2:
+            Line::power(0);
+            break;
+        case RING_PULSE / 2 + RING_PULSE / 10:
+            Line::power(1);
+            break;
+        }
+    }
+
+    tonecount ++;
+    if (tonecount >= RING_OFF) tonecount = 0;
+}
+
+/// tone
+void Line::tone (enum Tone type) {
+    if (! hook && ( type == DialTone ||
+      (type == RingBackTone && tonecount < TONE_RBT_ON) ||
+      (type == BusyTone && tonecount < TONE_BT_ON) ) ) {
+        // on hook
+        dac.write_u16(tonetable[tonecount % TONE_DT]);
+    } else {
+        // off hook
+        dac.write_u16(0x7fff);
+    }
+
+    tonecount ++;
+    if ( (type == DialTone && tonecount >= TONE_DT) ||
+      (type == RingBackTone && tonecount >= TONE_RBT_OFF) ||
+      (type == BusyTone && tonecount >= TONE_BT_OFF) ) {
+        tonecount = 0;
+    }
+}