I am trying to run a program for reading an encoder in a motor. The PWM is running correctly but I would like to read the input from the encoder. I am using digitalRead
and I already tried with printf(digitalRead(21))
but it does not really work. How can I visualize it? I attach my program in C:
#include <wiringPi.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#define MFOR_MOTOR 25
#define MBACK_MOTOR 24
#define PWM_MOTOR 1
#define ENCODER_A 21
#define ENCODER_B 22
int main(void) {
if (wiringPiSetup() == -1)
exit(1);
int pwm_user;
wiringPiSetup();
pinMode(MFOR_MOTOR, OUTPUT);
pinMode(MBACK_MOTOR, OUTPUT);
pinMode(PWM_MOTOR, PWM_OUTPUT);
pinMode(ENCODER_A, INPUT);
pinMode(ENCODER_B, INPUT);
printf("Raspberry Pi wiringPi Motor PWM program\n") ;
printf("PWM from motor: ");
scanf("%d", &pwm_user);
pwmWrite(PWM_MOTOR, pwm_user);
digitalWrite(MFOR_MOTOR, HIGH);
while (1) {
digitalRead(ENCODER_A);
}
digitalWrite(MFOR_MOTOR, LOW);
return 0;
}
CodePudding user response:
You can convert the integer to a string with:
printf("%d\n", digitalRead(21));