IISEC
Brightness of four leds is changed by PWM.
Dependencies: mbed
Diff: pwm_blinky.cpp
- Revision:
- 1:151d44cd460b
- Parent:
- 0:95e37c204360
diff -r 95e37c204360 -r 151d44cd460b pwm_blinky.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/pwm_blinky.cpp Tue May 15 04:03:38 2018 +0000
@@ -0,0 +1,26 @@
+#include "mbed.h"
+
+PwmOut pwmled1(LED1), pwmled2(LED2);
+PwmOut pwmled3(p22), pwmled4(p23);
+// Serial pc(USBTX, USBRX);
+
+void changeled(PwmOut *led)
+{ float val;
+ val= led->read() * 1.03 +0.01;
+ if (val>0.99) val=0.0;
+ led->write(val);}
+
+void changeled_rev(PwmOut *led)
+{ float val;
+ val= led->read() * 0.98 - 0.01;
+ if (val<0.01) val=0.99;
+ led->write(val);}
+
+int main() {
+ while(1) {
+ changeled(&pwmled1);
+ changeled_rev(&pwmled2);
+ changeled(&pwmled3);
+ changeled_rev(&pwmled4);
+ wait(0.05); } }
+