Diff: bubble.cpp

Revision:

0:cc6e3bfecab4

Child:

1:0dd75913f211

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bubble.cpp	Thu Mar 26 07:20:46 2015 +0000
@@ -0,0 +1,161 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * This drives the popular QDSP6064 bubble display.  *
+ *                                                   *
+ * Created by: Michael Dushkoff (mad1841@rit.edu)    *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * */
+#include "bubble.h"
+
+/*
+ * 
+ */
+void BubbleDisplay::init(PinName m0, PinName m1, PinName m2, PinName m3,
+                  PinName m4, PinName m5, PinName m6, PinName m7,
+                  PinName m8, PinName m9, PinName m10, PinName m11){
+    // Set up pins
+    _cat1 = new DigitalOut(m0);
+    _anE = new DigitalOut(m1);
+    _anC = new DigitalOut(m2);
+    _cat3 = new DigitalOut(m3);
+    _anDP = new DigitalOut(m4);
+    _cat4 = new DigitalOut(m5);
+    _anG = new DigitalOut(m6);
+    _anD = new DigitalOut(m7);
+    _anF = new DigitalOut(m8);
+    _cat2 = new DigitalOut(m9);
+    _anB = new DigitalOut(m10);
+    _anA = new DigitalOut(m11);
+    
+    // Initialize the Ticker
+    _freq = DEF_DISPL_FREQ;
+    _cycler.attach(this,&BubbleDisplay::cycle,1.0/(_freq));
+    
+    // Set the initial display number
+    _seg = 0;
+    
+    // Set the initial character values
+    _chrs[0] = dispTabl[0];
+    _chrs[1] = dispTabl[0];
+    _chrs[2] = dispTabl[0];
+    _chrs[3] = dispTabl[0];
+}
+
+/*
+ * This is the default BubbleDisplay constructor that
+ * maps the pins in a simple way for the LPC11U24.
+ */ 
+BubbleDisplay::BubbleDisplay(){
+    init(p21,p22,p23,p24,p25,p26,p36,p35,p34,p33,p30,p29);
+}
+
+/*
+ * This allows a user to map the pins of the bubble display
+ * to any possible pin that they desire.
+ */
+BubbleDisplay::BubbleDisplay(PinName m0, PinName m1, PinName m2, PinName m3,
+              PinName m4, PinName m5, PinName m6, PinName m7,
+              PinName m8, PinName m9, PinName m10, PinName m11){
+    init(m0,m1,m2,m3,m4,m5,m6,m7,m8,m9,m10,m11);
+}
+
+/*
+ * Default destructor
+ */
+BubbleDisplay::~BubbleDisplay(){
+    // Clean up all of our pointers
+    delete _cat1;
+    delete _anE;
+    delete _anC;
+    delete _cat3;
+    delete _anDP;
+    delete _cat4;
+    delete _anG;
+    delete _anD;
+    delete _anF;
+    delete _cat2;
+    delete _anB;
+    delete _anA;
+}
+
+/*
+ * This sets the cycle frequency to a specific value instead of the
+ * default 10kHz.
+ */
+ void BubbleDisplay::setFreq(double freq){
+     // Detach the cycler and then reattach it with the new frequency
+     _freq=freq;
+     _cycler.detach();
+     _cycler.attach(this,&BubbleDisplay::cycle,1.0/(_freq));
+}
+
+/*
+ * This cycles through the four seven segment displays on the
+ * bubble display by switching on and off the correct cathodes.
+ */
+void BubbleDisplay::cycle(){
+    // Set anodes to current display
+    (*_anDP) = ((dispTabl[_chrs[_seg]] >> 7) & (0x01));
+    (*_anA) = ((dispTabl[_chrs[_seg]] >> 6) & (0x01));
+    (*_anB) = ((dispTabl[_chrs[_seg]] >> 5) & (0x01));
+    (*_anC) = ((dispTabl[_chrs[_seg]] >> 4) & (0x01));
+    (*_anD) = ((dispTabl[_chrs[_seg]] >> 3) & (0x01));
+    (*_anE) = ((dispTabl[_chrs[_seg]] >> 2) & (0x01));
+    (*_anF) = ((dispTabl[_chrs[_seg]] >> 1) & (0x01));
+    (*_anG) = ((dispTabl[_chrs[_seg]] >> 0) & (0x01));
+    
+    switch(_seg){
+        case 0:
+            // Switch appropriate cathodes
+            (*_cat1) = 0;
+            (*_cat2) = 1;
+            (*_cat3) = 1;
+            (*_cat4) = 1;
+            _seg = 1;
+            break;
+        case 1:
+            // Switch appropriate cathodes
+            (*_cat1) = 1;
+            (*_cat2) = 0;
+            (*_cat3) = 1;
+            (*_cat4) = 1;
+            _seg = 2;
+            break;
+        case 2:
+            // Switch appropriate cathodes
+            (*_cat1) = 1;
+            (*_cat2) = 1;
+            (*_cat3) = 0;
+            (*_cat4) = 1;
+            _seg = 3;
+            break;
+        default:
+            // Switch appropriate cathodes
+            (*_cat1) = 1;
+            (*_cat2) = 1;
+            (*_cat3) = 1;
+            (*_cat4) = 0;
+            _seg = 0;
+            break;
+    }
+}
+
+/*
+ * This writes a sequence of characters from left to right
+ * to the seven-segment displays.
+ */
+void BubbleDisplay::write(char c1, char c2, char c3, char c4){
+    _chrs[0] = c1;
+    _chrs[1] = c2;
+    _chrs[2] = c3;
+    _chrs[3] = c4;
+}
+
+/*
+ * This writes a sequence of characters from left to right
+ * to the seven-segment displays.
+ */
+void BubbleDisplay::write(char* c){
+    _chrs[0] = c[0];
+    _chrs[1] = c[1];
+    _chrs[2] = c[2];
+    _chrs[3] = c[3];
+}
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