Diff: main.cpp

Revision:

0:6e96e6e154d1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Sep 29 05:45:11 2017 +0000
@@ -0,0 +1,24 @@
+// NuMaker-PFM-NUC472 : PWM1 output to drive DC servo motor
+#include "mbed.h"
+
+#if defined(TARGET_NUMAKER_PFM_NUC472)
+PwmOut pwm1(PF_10); // PWM1 pinname
+#elif defined(TARGET_NUMAKER_PFM_M453)
+PwmOut pwm1(PC_7);
+#elif defined(TARGET_NUMAKER_PFM_M487)
+PwmOut pwm1(PA_4); // PWM1 pinname
+#endif
+
+int main() {
+    
+    int i=0;
+    printf("...DCserv Start...\n\r");
+    pwm1.period_us(20000);      // set PWM period to 20ms (50Hz)
+        
+    for (i=500; i<=2500; i=i+200) { // from 0.5ms to 2.5ms
+        pwm1.pulsewidth_us(i);      // set PWM pulse width to rotate motor
+        Thread::wait(1000);         // delay
+        printf("DCservo pulse width = %d\n\r", i);
+    } 
+    printf("...DCserv End.....\n\r");                             
+}