Revision 0:440732350fa8, committed 2014-02-07

Comitter:

salatron

Date:

Fri Feb 07 10:39:28 2014 +0000

Commit message:

7 Segment Display

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SevenSegLed.lib	Fri Feb 07 10:39:28 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/jf1452/code/SevenSegLed/#2f235ad35a6d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Feb 07 10:39:28 2014 +0000
@@ -0,0 +1,58 @@
+/*******************************************************************************
+* This program demonstrates how to drive the seven segment display *
+* *
+* Jon Fuge *
+* V1.0 13/12/2013 First issue of code *
+*******************************************************************************/
+#include "mbed.h"
+#include "SevenSegLed.h"
+
+// Lets define some "macros" to make the code easier to read
+#define mUnits D_7seg[1]    // "mUnits" will be substiuted for "D_7seg[1]"
+#define mTens D_7seg[0]     // "mTens" will be substiuted for "D_7seg[0]"
+#define mDot D_dot[1]       // "mDot" will be substiuted for "D_dot[1]"
+
+void attimeout(); //declare prototype for timeout handler.
+//configure sevensegled pin connection mapping.
+//
+// common type (0:anode common 1:cathode common)
+// | display mode (0:smooth 1:hard)
+// | | segA segB segC segD segE segF segG segP com1 com2
+SevenSegLed segmentled(0, 0, P1_23, P1_28, P0_16, P1_31, P1_13, P1_16, P1_19, P0_23, p21, P1_25);
+
+//Define two arrays to house the data to be outputted. D_7seg can contain digits 0‐F and D_dot 0‐1.
+//
+// 0 1 //0 = leftmost digit, 1 = rightmost digit
+// | |
+uint8_t D_7seg[2] = {0, 0}; // number (0x00:"0", ... , 0x09:"9", 0x0A:"A", ... , 0x0F:"F", other:" ")
+uint8_t D_dot[2] = {0, 0}; // dotpoint. (0:off 1:on)
+Ticker timeout; //Create an instance of class Ticker called timeout.
+
+int main()
+{
+    timeout.attach_us(&attimeout, 500000); // Set up interrupt to call attimeout() every half a second.
+    for(;;)
+    {
+        segmentled.SevenSegLed_main(D_7seg, D_dot); // Keep the displays multiplexed.
+    }
+}
+
+void attimeout() //Timer interrupt routine.
+{
+    mDot = 1 - mDot;
+    if (mDot == 1) 
+    {
+        mUnits++; // This means the same as D_7seg[0] = D_7seg[0] + 1; Increment "units"
+        
+        if (mUnits > 9)
+        { // "units" digit should be in the range 0 ‐> 9
+            mUnits = 0; // Reset the "units" to 0
+            mTens++; // Increment "tens" digit
+            
+            if (mTens > 9)
+            { // "tens" digit should be in the range 0 ‐> 9
+                mTens = 0; // Reset the "tens" to 0
+            }
+        }
+    }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Fri Feb 07 10:39:28 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/824293ae5e43
\ No newline at end of file