Lancaster University / mbed-src

Lancaster University's (short term!) clone of mbed-src for micro:bit. This is a copy of the github branch https://github.com/lancaster-university/mbed-classic

Fork of mbed-src by mbed official

Diff: common/BusInOut.cpp

Revision:
455:8bc3a354916d
Parent:
13:0645d8841f51
Child:
457:777fdfed0738
diff -r a07e52520545 -r 8bc3a354916d common/BusInOut.cpp
--- a/common/BusInOut.cpp	Tue Jan 27 07:15:07 2015 +0000
+++ b/common/BusInOut.cpp	Tue Jan 27 13:30:08 2015 +0000
@@ -20,14 +20,22 @@
 BusInOut::BusInOut(PinName p0, PinName p1, PinName p2, PinName p3, PinName p4, PinName p5, PinName p6, PinName p7, PinName p8, PinName p9, PinName p10, PinName p11, PinName p12, PinName p13, PinName p14, PinName p15) {
     PinName pins[16] = {p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15};
 
+    _nc_mask = 0;
     for (int i=0; i<16; i++) {
         _pin[i] = (pins[i] != NC) ? new DigitalInOut(pins[i]) : 0;
+        if (pins[i] != NC) {
+            _nc_mask |= (1 << i);
+        }
     }
 }
 
 BusInOut::BusInOut(PinName pins[16]) {
+    _nc_mask = 0;
     for (int i=0; i<16; i++) {
         _pin[i] = (pins[i] != NC) ? new DigitalInOut(pins[i]) : 0;
+        if (pins[i] != NC) {
+            _nc_mask |= (1 << i);
+        }
     }
 }
 
@@ -92,6 +100,12 @@
     return *this;
 }
 
+DigitalInOut& BusInOut::operator[] (int index) {
+    MBED_ASSERT(index >= 0 && index <= 16);
+    MBED_ASSERT(_pin[index]);
+    return *_pin[index];
+}
+
 BusInOut::operator int() {
     return read();
 }