Diff: main.cpp

Revision:

0:308c4a8d774b

Child:

1:1336ea4dd725

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat May 24 09:25:33 2014 +0000
@@ -0,0 +1,69 @@
+/**************************************************************************
+*                                                                         *
+*   A stripped down simple seven segement example for RedBED              *
+*                                                                         *
+*   The LED block actually has 8 illuminable sections                     *
+*   segments 'a' to 'g' for the main display and 'p' for a decimal point  *
+*      _________                                                          *
+*     <____a____>                                                         *
+*   / \          / \                                                      *
+*   | |          | |                                                      *
+*   |f|          |b|                                                      *
+*   | |          | |                                                      *
+*   \ /_________ \ /                                                      *
+*     <____g____>                                                         *
+*   / \          / \                                                      *
+*   | |          | |                                                      *
+*   |e|          |c|                                                      *
+*   | |          | |                                                      *
+*   \ /_________ \ /                                                      *
+*     <____d____>     |p|                                                 *
+*                                                                         *
+**************************************************************************/
+
+#include "mbed.h"
+
+uint8_t left = 0;
+uint8_t right = 1;
+
+//The 8 segment outputs and com to switch between the LEDs
+DigitalOut seg_a(P1_23), seg_b(P1_28), seg_c(P0_16), seg_d(P1_31), seg_e(P1_13), seg_f(P1_16), seg_g(P1_19), seg_p(P0_23), com(P1_25);
+
+/******************************************************
+*   Set each of the segments for a desired led        *
+******************************************************/
+void SetSegments(uint8_t led, uint8_t a, uint8_t b, uint8_t c, uint8_t d, uint8_t e, uint8_t f, uint8_t g, uint8_t p)
+{
+    com = left;     //Set left LED
+    
+    //Switch off all segments (1 means off!)
+    seg_a = seg_b = seg_c = seg_d = seg_e = seg_f = seg_g = seg_p = 1;
+    
+    com = led;      //Set desired LED to update
+    
+    //Update it in a loop otherwise it's too fast
+    for(uint8_t i = 0; i < 100; i++) 
+    {
+        seg_a = 1 - a; //1 means off so invert all requested segment values
+        seg_b = 1 - b;
+        seg_c = 1 - c;
+        seg_d = 1 - d;
+        seg_e = 1 - e;
+        seg_f = 1 - f;
+        seg_g = 1 - g;
+        seg_p = 1 - p;
+    }
+}
+
+/******************************************************
+*   Main loop repeatedly updates each of the LEDs     *
+******************************************************/
+int main()
+{
+    for(;;) 
+    {
+        SetSegments(left,  0,1,1,0,0,1,1,0); //4
+        SetSegments(right, 1,1,0,1,1,0,1,0); //2
+    }
+}
+