Christian Dupaty
Control the intensity of a single LED ( in series with 50 ohms) on PA_10
Revision 0:baf22868bfcf, committed 2015-03-19
- Comitter:
- cdupaty
- Date:
- Thu Mar 19 10:05:36 2015 +0000
- Commit message:
- A PWM LED light control
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 Thu Mar 19 10:05:36 2015 +0000
@@ -0,0 +1,27 @@
+#include "mbed.h"
+
+#define per 0.001
+#define delta 0.0001
+
+PwmOut ledpwm(PA_10);
+
+
+int main() {
+float w=0;
+int sens=0;
+ ledpwm.period(per);
+ ledpwm.pulsewidth(delta);
+ while(1) {
+ if (sens) {
+ w+=delta;
+ if (w>=per) sens=0;
+ }
+ else {
+ w-=delta;
+ if (w<=0) sens=1;
+ }
+ wait(0.04);
+ ledpwm.pulsewidth(w);
+ printf("pwm est de %.2f %%\n\r", ledpwm.read() * 100);
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Mar 19 10:05:36 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/487b796308b0 \ No newline at end of file