Diff: main.cpp

Revision:

0:91c1916e3ed3

Child:

1:2ed56eefabf0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Mar 02 20:32:39 2016 +0000
@@ -0,0 +1,47 @@
+
+/*
+ * Read an entire dip switch composed by 8 interrupts
+ */
+
+#include "mbed.h"
+#include "Hotboards_switches.h"
+
+// Creates a single sw object composed by 8 interrupts. theses interrupts will give us a
+// LOW(0) value when close because our dip switch works with pull-ups.
+Hotboards_switches dip_sw( PA_6 , PA_7 , PB_6 , PC_7 , PA_9 , PA_8 , PB_10 , PB_4 );
+// If your dip switch will gave you a HIGH(1) value when close, then we need to create the sw
+// object with an extra parameter: 
+// Hotboards_switches dip_sw( PA_6 , PA_7 , PB_6 , PC_7 , PA_9 , PA_8 , PB_10 , PB_4 , 1 );
+// In any case the functions will return a HIGH(1) value any time the sw is closed
+
+// For this example we will use the USB serial port, here we initialize it
+Serial pc(USBTX,USBRX);
+
+int i, j;
+uint8_t value;
+
+int main()
+{
+    while(1)
+    {
+        // Reads the dip switch and puts it in value
+        value = dip_sw.read();
+        // Inverts the read value to make it coincide with the state of each
+        // switch in binary
+        value = ~value;
+        // Sends throught USB serial the value in decimal
+        pc.printf( "dec = " );
+        pc.printf( "%d\r" , value );
+        // Sends through USB serial the value in binary
+        pc.printf( "bin = " );
+        for(i=0;i<8;i++)            //Extracts and shows the binary value of each sw
+        { 
+            j = value&0x80;         //Applies a mask(10000000) to extract the value of the bit in turn
+            j>>=7;                  //Moves this bit 7 positions to the right
+            pc.printf("%d",j);      //Sends through USB serial the value of the extracted bit
+            value <<=1;             //Moves the position 1 bit to the left to extract the next bit
+        }
+        pc.printf( "\n\r" );
+        wait( 1 );
+    }
+}