Ray Liu / Mbed OS NuMaker-mbed-PWM1_DCservo

Modify the file main.cpp for M487

main.cpp@0:6e96e6e154d1, 2017-09-29 (annotated)

Committer:
shliu1
Date:
Fri Sep 29 05:45:11 2017 +0000
Revision:
0:6e96e6e154d1
main.cpp adds the setting of TARGET_NUMAKER_PFM_M487 for M487

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shliu1 0:6e96e6e154d1 1 // NuMaker-PFM-NUC472 : PWM1 output to drive DC servo motor
shliu1 0:6e96e6e154d1 2 #include "mbed.h"
shliu1 0:6e96e6e154d1 3
shliu1 0:6e96e6e154d1 4 #if defined(TARGET_NUMAKER_PFM_NUC472)
shliu1 0:6e96e6e154d1 5 PwmOut pwm1(PF_10); // PWM1 pinname
shliu1 0:6e96e6e154d1 6 #elif defined(TARGET_NUMAKER_PFM_M453)
shliu1 0:6e96e6e154d1 7 PwmOut pwm1(PC_7);
shliu1 0:6e96e6e154d1 8 #elif defined(TARGET_NUMAKER_PFM_M487)
shliu1 0:6e96e6e154d1 9 PwmOut pwm1(PA_4); // PWM1 pinname
shliu1 0:6e96e6e154d1 10 #endif
shliu1 0:6e96e6e154d1 11
shliu1 0:6e96e6e154d1 12 int main() {
shliu1 0:6e96e6e154d1 13
shliu1 0:6e96e6e154d1 14 int i=0;
shliu1 0:6e96e6e154d1 15 printf("...DCserv Start...\n\r");
shliu1 0:6e96e6e154d1 16 pwm1.period_us(20000); // set PWM period to 20ms (50Hz)
shliu1 0:6e96e6e154d1 17
shliu1 0:6e96e6e154d1 18 for (i=500; i<=2500; i=i+200) { // from 0.5ms to 2.5ms
shliu1 0:6e96e6e154d1 19 pwm1.pulsewidth_us(i); // set PWM pulse width to rotate motor
shliu1 0:6e96e6e154d1 20 Thread::wait(1000); // delay
shliu1 0:6e96e6e154d1 21 printf("DCservo pulse width = %d\n\r", i);
shliu1 0:6e96e6e154d1 22 }
shliu1 0:6e96e6e154d1 23 printf("...DCserv End.....\n\r");
shliu1 0:6e96e6e154d1 24 }