Tom Fleet / Mbed 2 deprecated ShiftReg_7seg

A quick example of how to use a 7 Segment CA display with a 74HC164 Shift Register.

Dependencies:   mbed

main.cpp@0:9c559759e6dc, 2013-02-22 (annotated)

Committer:
tomfleet
Date:
Fri Feb 22 13:57:49 2013 +0000
Revision:
0:9c559759e6dc
Version 1, Working as expected.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tomfleet 0:9c559759e6dc 1 // Name: ShiftReg_7seg
tomfleet 0:9c559759e6dc 2 // Description: An example of how to print characters to a common anode 7-segment display.
tomfleet 0:9c559759e6dc 3
tomfleet 0:9c559759e6dc 4 #include "mbed.h"
tomfleet 0:9c559759e6dc 5 #define dpMask 0x80 //bitiwse OR with data to enable decimal point
tomfleet 0:9c559759e6dc 6 SPI shiftReg (p5, p6, p7);
tomfleet 0:9c559759e6dc 7 DigitalOut MR (p8);
tomfleet 0:9c559759e6dc 8 DigitalOut myled(LED1);
tomfleet 0:9c559759e6dc 9 char charTable[16] = {0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x83, 0xF8, 0x80, 0x98, 0x88, 0x83, 0xC6, 0xA1, 0x86 ,0x8E};//0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F
tomfleet 0:9c559759e6dc 10
tomfleet 0:9c559759e6dc 11 void setup()
tomfleet 0:9c559759e6dc 12 {
tomfleet 0:9c559759e6dc 13 MR = 0;
tomfleet 0:9c559759e6dc 14 wait(0.1);
tomfleet 0:9c559759e6dc 15 MR = 1;
tomfleet 0:9c559759e6dc 16 shiftReg.write(0x00);
tomfleet 0:9c559759e6dc 17 wait(1);
tomfleet 0:9c559759e6dc 18 shiftReg.write(0xFF);
tomfleet 0:9c559759e6dc 19 wait(1);
tomfleet 0:9c559759e6dc 20 }
tomfleet 0:9c559759e6dc 21
tomfleet 0:9c559759e6dc 22 int main() {
tomfleet 0:9c559759e6dc 23 setup();
tomfleet 0:9c559759e6dc 24 while(1) {
tomfleet 0:9c559759e6dc 25 for (int i = 0; i < sizeof(charTable); i++)
tomfleet 0:9c559759e6dc 26 {
tomfleet 0:9c559759e6dc 27 shiftReg.write(charTable[i]);
tomfleet 0:9c559759e6dc 28 wait(0.2);
tomfleet 0:9c559759e6dc 29 }
tomfleet 0:9c559759e6dc 30 }
tomfleet 0:9c559759e6dc 31 }