Diff: PWM.cpp

Revision:

27:23bd03a6a6f6

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PWM.cpp	Sun Apr 07 18:31:29 2019 +0000
@@ -0,0 +1,77 @@
+#include "mbed.h"
+#include "PWM.h"
+
+Timeout timer;
+Timeout timer2;
+
+DigitalOut my_pwm(D10); // IO used by pwm_io function
+DigitalOut my_pwm2(D5);
+
+
+int on_delay = 0;
+int off_delay = 0;
+int on_delay2 = 0;
+int off_delay2 = 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();
+}
+
+////PMW2
+void toggleOff2(void);
+
+void toggleOn2(void) {
+    my_pwm2 = 1;
+    timer2.attach_us(toggleOff2, on_delay2);
+}
+
+void toggleOff2(void) {
+    my_pwm2 = 0;
+    timer2.attach_us(toggleOn2, off_delay2);
+}
+
+// p_us = signal period in micro_seconds
+// dc   = signal duty-cycle (0.0 to 1.0)
+void pwm_io2(int p_us, float dc) {
+    timer2.detach();
+    if ((p_us == 0) || (dc == 0)) {
+        my_pwm2 = 0;
+        return;
+    }
+    if (dc >= 1) {
+        my_pwm2 = 1;
+        return;
+    }
+    on_delay2 = (int)(p_us * dc);
+    off_delay2 = p_us - on_delay2;
+    toggleOn2();
+}
+
+
+
+