Sergio Collado
This program aims to be an easy example for those starting, focusing in the analog input an digital output. The diagrams and wirings at http://mbed.org/users/Sergio/notebook/simple-voltage-indicator/#
Revision 0:acf4358ae130, committed 2010-09-07
- Comitter:
- Sergio
- Date:
- Tue Sep 07 23:18:25 2010 +0000
- Commit message:
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
diff -r 000000000000 -r acf4358ae130 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Sep 07 23:18:25 2010 +0000
@@ -0,0 +1,51 @@
+#include "mbed.h"
+
+AnalogIn input(p20); //the range of the analog input goes, from 0 V. to 3.3V.
+// the actual value is represented as a float from 0 to 1.
+
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+
+
+
+int main() {
+
+
+ float ain; //ain must be a float, for matching the input.read type.
+
+ while (1) {
+
+ ain=input.read();
+
+ if (ain<0.15) { //if analog input <0.15*3.3=0.45V
+ led1=0;
+ led2=0;
+ led3=0;
+ led4=0;
+ } else if ( ain>0.15 && ain<0.3) { // ain>0.45V and ain< 0.99V
+ led1=1;
+ led2=0;
+ led3=0;
+ led4=0;
+ } else if ( ain>0.3 && ain<0.6) { // ain>0.99V and ain<1.98V
+ led1=1;
+ led2=1;
+ led3=0;
+ led4=0;
+ } else if ( ain>0.6 && ain<0.91) { //ain>1.98 and ain>3.01V
+ led1=1;
+ led2=1;
+ led3=1;
+ led4=0;
+ } else { // more that 3 volts.
+ led1=1;
+ led2=2;
+ led3=1;
+ led4=1;
+ }
+
+
+ }//end while(1)
+}//end main
\ No newline at end of file
diff -r 000000000000 -r acf4358ae130 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Sep 07 23:18:25 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/74b8d43b5817