Yoshitaka Kuwata / sseg

7 segment display library for mbed This routine support 2,4 and 8 digit anode-common or cathode-common LED.

Dependents:   7segMbed

Diff: Sseg.cpp

Revision:
7:a19431131213
Parent:
4:858e42224b50
Child:
9:6d3229c8dc0f
--- a/Sseg.cpp	Thu Aug 07 11:44:22 2014 +0000
+++ b/Sseg.cpp	Sun Sep 21 08:32:50 2014 +0000
@@ -29,6 +29,7 @@
     _updateInterval = (8333 / 2);
     _zeroSupress = true;
     _kcommon = false;
+    _sinkDriver = false;
 }
 
 // 4 digit
@@ -41,6 +42,7 @@
     _updateInterval = (8333 / 4);
     _zeroSupress = true;
     _kcommon = false;
+    _sinkDriver = false;
 }
 
 // 8 digit
@@ -54,6 +56,7 @@
     _updateInterval = (8333 / 8);
     _zeroSupress = true;
     _kcommon = false;
+    _sinkDriver = false;
 }
 
 
@@ -70,6 +73,10 @@
     _kcommon = true;
 }
 
+void Sseg::setSinkDriver(void) {
+    _sinkDriver = true;
+}
+
 char Sseg::segCh(char i) {
     return Sseg::numConv[i];
 }
@@ -267,7 +274,7 @@
 void Sseg::updateSeg(void) {
     if( (++_dig) >= _numOfDigs)
         _dig = 0;
-    _segPins = ( _kcommon) ? _buffer[_dig] : ~_buffer[_dig];
+    _segPins = (( _kcommon) || (_sinkDriver)) ? _buffer[_dig] : ~_buffer[_dig];
 }
 
 bool Sseg::update(void) {