Michael Dushkoff
This is a driver library for the popular QDSP-6064 bubble display. These miniature displays can be leveraged for small breadboard projects in order to display debug information or even in larger projects where LCD displays are unpractical.
About
Hardware
Usage
Diff: bubble.h
- Revision:
- 0:cc6e3bfecab4
- Child:
- 1:0dd75913f211
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/bubble.h Thu Mar 26 07:20:46 2015 +0000
@@ -0,0 +1,220 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * This drives the popular QDSP6064 bubble display. *
+ * *
+ * Created by: Michael Dushkoff (mad1841@rit.edu) *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#ifndef BUBBLE_DISPLAY_H
+#define BUBBLE_DISPLAY_H
+
+#include "mbed.h"
+
+// Definitions
+#define DEF_DISPL_FREQ (10000.0) // 10kHz display frequency
+
+// LUT for character to display
+const char dispTabl[] = {
+ 0x7E, // 0
+ 0x30, // 1
+ 0x6D, // 2
+ 0x79, // 3
+ 0x33, // 4
+ 0x5B, // 5
+ 0x5F, // 6
+ 0x70, // 7
+ 0x7F, // 8
+ 0x7B, // 9
+ 0x77, // 10 "A"
+ 0x1F, // 11 "B"
+ 0x4E, // 12 "C"
+ 0x3D, // 13 "D"
+ 0x4F, // 14 "E"
+ 0x47, // 15 "F"
+ 0x00, // 16 NO DISPLAY
+ 0x00, // 17 NO DISPLAY
+ 0x00, // 18 NO DISPLAY
+ 0x00, // 19 NO DISPLAY
+ 0x00, // 20 NO DISPLAY
+ 0x00, // 21 NO DISPLAY
+ 0x00, // 22 NO DISPLAY
+ 0x00, // 23 NO DISPLAY
+ 0x00, // 24 NO DISPLAY
+ 0x00, // 25 NO DISPLAY
+ 0x00, // 26 NO DISPLAY
+ 0x00, // 27 NO DISPLAY
+ 0x00, // 28 NO DISPLAY
+ 0x00, // 29 NO DISPLAY
+ 0x00, // 30 NO DISPLAY
+ 0x00, // 31 NO DISPLAY
+ 0x00, // 32 ' '
+ 0x00, // 33 '!' NO DISPLAY
+ 0x22, // 34 '"'
+ 0x00, // 35 '#' NO DISPLAY
+ 0x00, // 36 '$' NO DISPLAY
+ 0x00, // 37 '%' NO DISPLAY
+ 0x00, // 38 '&' NO DISPLAY
+ 0x20, // 39 '''
+ 0x4E, // 40 '('
+ 0x78, // 41 ')'
+ 0x00, // 42 '*' NO DISPLAY
+ 0x00, // 43 '+' NO DISPLAY
+ 0x04, // 44 ','
+ 0x01, // 45 '-'
+ 0x80, // 46 '.' Decimal
+ 0x00, // 47 '/' NO DISPLAY
+ 0x7E, // 48 '0'
+ 0x30, // 49 '1'
+ 0x6D, // 50 '2'
+ 0x79, // 51 '3'
+ 0x33, // 52 '4'
+ 0x5B, // 53 '5'
+ 0x5F, // 54 '6'
+ 0x70, // 55 '7'
+ 0x7F, // 56 '8'
+ 0x7B, // 57 '9'
+ 0x00, // 58 ':' NO DISPLAY
+ 0x00, // 59 ';' NO DISPLAY
+ 0x00, // 60 '<' NO DISPLAY
+ 0x00, // 61 '=' NO DISPLAY
+ 0x00, // 62 '>' NO DISPLAY
+ 0x00, // 63 '?' NO DISPLAY
+ 0x00, // 64 '@' NO DISPLAY
+ 0x77, // 65 'A'
+ 0x1F, // 66 'B'
+ 0x4E, // 67 'C'
+ 0x3D, // 68 'D'
+ 0x4F, // 69 'E'
+ 0x47, // 70 'F'
+ 0x5E, // 71 'G'
+ 0x37, // 72 'H'
+ 0x30, // 73 'I'
+ 0x38, // 74 'J'
+ 0x00, // 75 'K' NO DISPLAY
+ 0x0E, // 76 'L'
+ 0x00, // 77 'M' NO DISPLAY
+ 0x15, // 78 'N'
+ 0x7E, // 79 'O'
+ 0x67, // 80 'P'
+ 0x73, // 81 'Q'
+ 0x05, // 82 'R'
+ 0x5B, // 83 'S'
+ 0x0F, // 84 'T'
+ 0x3E, // 85 'U'
+ 0x00, // 86 'V' NO DISPLAY
+ 0x00, // 87 'W' NO DISPLAY
+ 0x00, // 88 'X' NO DISPLAY
+ 0x3B, // 89 'Y'
+ 0x00, // 90 'Z' NO DISPLAY
+ 0x4E, // 91 '['
+ 0x00, // 92 '\' NO DISPLAY
+ 0x78, // 93 ']'
+ 0x00, // 94 '^' NO DISPLAY
+ 0x80, // 95 '_'
+ 0x02, // 96 '`'
+ 0x77, // 97 'a' SAME AS CAP
+ 0x1F, // 98 'b' SAME AS CAP
+ 0x0D, // 99 'c'
+ 0x3D, // 100 'd' SAME AS CAP
+ 0x6F, // 101 'e'
+ 0x47, // 102 'f' SAME AS CAP
+ 0x5E, // 103 'g' SAME AS CAP
+ 0x17, // 104 'h'
+ 0x10, // 105 'i'
+ 0x38, // 106 'j' SAME AS CAP
+ 0x00, // 107 'k' NO DISPLAY
+ 0x30, // 108 'l'
+ 0x00, // 109 'm' NO DISPLAY
+ 0x15, // 110 'n' SAME AS CAP
+ 0x1D, // 111 'o'
+ 0x67, // 112 'p' SAME AS CAP
+ 0x73, // 113 'q' SAME AS CAP
+ 0x05, // 114 'r' SAME AS CAP
+ 0x5B, // 115 's' SAME AS CAP
+ 0x0F, // 116 't' SAME AS CAP
+ 0x1C, // 117 'u'
+ 0x00, // 118 'b' NO DISPLAY
+ 0x00, // 119 'w' NO DISPLAY
+ 0x00, // 120 'x' NO DISPLAY
+ 0x00, // 121 'y' NO DISPLAY
+ 0x00, // 122 'z' NO DISPLAY
+ 0x00, // 123 '0b' NO DISPLAY
+ 0x00, // 124 '|' NO DISPLAY
+ 0x00, // 125 ',' NO DISPLAY
+ 0x00, // 126 '~' NO DISPLAY
+ 0x00, // 127 'DEL' NO DISPLAY
+};
+
+class BubbleDisplay{
+public:
+ /*
+ * This is the default BubbleDisplay constructor that
+ * maps the pins in a simple way for the LPC11U24.
+ */
+ BubbleDisplay();
+
+ /*
+ * This allows a user to map the pins of the bubble display
+ * to any possible pin that they desire.
+ */
+ 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);
+
+ /*
+ * Default destructor
+ */
+ ~BubbleDisplay();
+
+ /*
+ * This sets the cycle frequency to a specific value instead of the
+ * default 10kHz.
+ */
+ void setFreq(double freq);
+
+ /*
+ * This writes a sequence of characters from left to right
+ * to the seven-segment displays.
+ */
+ void write(char c1, char c2, char c3, char c4);
+
+ /*
+ * This writes a sequence of characters from left to right
+ * to the seven-segment displays.
+ */
+ void write(char* c);
+private:
+ /*
+ * This is a constructor helper function
+ */
+ void 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);
+
+ /*
+ * This cycles through the four seven segment displays on the
+ * bubble display by switching on and off the correct cathodes.
+ */
+ void cycle();
+
+ /* Private variables */
+ Ticker _cycler;
+ double _freq; // The cycle frequency
+ char _seg; // The current display number
+ // All of the pins
+ DigitalOut* _cat1;
+ DigitalOut* _anE;
+ DigitalOut* _anC;
+ DigitalOut* _cat3;
+ DigitalOut* _anDP;
+ DigitalOut* _cat4;
+ DigitalOut* _anG;
+ DigitalOut* _anD;
+ DigitalOut* _anF;
+ DigitalOut* _cat2;
+ DigitalOut* _anB;
+ DigitalOut* _anA;
+ // Segement values
+ char _chrs[4];
+};
+
+#endif
\ No newline at end of file