Zainul Charbiwala
Using a capacitor to implement a touch sensitive \"button\"
Revision 0:1d63f10fba0a, committed 2010-10-19
- Comitter:
- zainulcharbiwala
- Date:
- Tue Oct 19 00:08:04 2010 +0000
- Commit message:
- Initial upload of TouchSense
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 |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Oct 19 00:08:04 2010 +0000
@@ -0,0 +1,35 @@
+#include "mbed.h"
+
+#define numsamples 1
+int touchSense(void);
+
+DigitalOut myled(LED1);
+AnalogIn input(p20);
+DigitalIn charger(p19);
+DigitalOut ground(p18);
+Serial pc(USBTX, USBRX); // tx, rx
+
+int main() {
+ while(1) {
+ if (touchSense()) {
+ myled = 1;
+ } else {
+ myled = 0;
+ }
+ wait(0.005);
+ }
+}
+
+int touchSense(void)
+{
+ float sample;
+ ground = 0;
+ charger.mode(PullUp);
+ charger.mode(PullNone);
+ sample=input.read();
+ if (sample < 0.3) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Oct 19 00:08:04 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/e2ac27c8e93e