Revision 0:eb891a3bc014, committed 2016-01-27

Comitter:

Kmj

Date:

Wed Jan 27 04:55:43 2016 +0000

Commit message:

This is remake version of Nucleo_pwm3.

Changed in this revision

diff -r 000000000000 -r eb891a3bc014 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Jan 27 04:55:43 2016 +0000
@@ -0,0 +1,55 @@
+#include "mbed.h"
+
+Timeout timer;
+InterruptIn my_button(USER_BUTTON);
+DigitalOut my_pwm(LED1); // IO used by pwm_io function
+
+int on_delay = 0;
+int off_delay = 0;
+float duty[5]={0.2f,0.4f,0.6f,0.8f,1.0f};
+int i=0;
+void toggleOff(void);
+
+void toggleOn(void) {
+    my_pwm = 1;
+    timer.attach_us(toggleOff, on_delay);
+}
+
+void toggleOff(void) {
+    my_pwm = 0;
+    timer.attach_us(toggleOn, off_delay);
+}
+
+// p_us = signal period in micro_seconds
+// dc   = signal duty-cycle (0.0 to 1.0)
+void pwm_io(int p_us, float dc) {
+    timer.detach();
+    if ((p_us == 0) || (dc == 0)) {
+        my_pwm = 0;
+        return;
+    }
+    if (dc >= 1) {
+        my_pwm = 1;
+        return;
+    }
+    on_delay = (int)(p_us * dc);
+    off_delay = p_us - on_delay;
+    toggleOn();
+}
+void pressed()
+{   if(i>=5)
+        i=0;
+
+    pwm_io(20000,duty[i]);
+    i++;
+}
+
+int main() {
+    my_button.fall(&pressed);
+    pwm_io(20000, 0.25); // 20ms - 25%
+    
+    while(1) {
+        
+    }
+}
+ 
\ No newline at end of file

diff -r 000000000000 -r eb891a3bc014 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Wed Jan 27 04:55:43 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/6f327212ef96
\ No newline at end of file