Roman Valencia
reading a complete dip switch
Dependencies: Hotboards_switches mbed
Revision 0:91c1916e3ed3, committed 2016-03-02
- Comitter:
- RomanValenciaP
- Date:
- Wed Mar 02 20:32:39 2016 +0000
- Child:
- 1:2ed56eefabf0
- Commit message:
- first release - recquires approval
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Hotboards_switches.lib Wed Mar 02 20:32:39 2016 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/Hotboards/code/Hotboards_switches/#dfb1302f847d
--- /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 );
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Mar 02 20:32:39 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/87f2f5183dfb \ No newline at end of file