55 lines
1.1 KiB
C++
55 lines
1.1 KiB
C++
|
#include <cstdio>
|
||
|
|
#include "pico/stdlib.h"
|
||
|
|
|
||
|
|
#include "encoder.hpp"
|
||
|
|
|
||
|
|
/*
|
||
|
|
A demonstration of a rotary encoder being used to control a value.
|
||
|
|
*/
|
||
|
|
|
||
|
|
using namespace encoder;
|
||
|
|
|
||
|
|
// Create an encoder on the 3 ADC pins, using PIO 0 and State Machine 0
|
||
|
|
const uint PIN_A = 26; // The A channel pin
|
||
|
|
const uint PIN_B = 28; // The B channel pin
|
||
|
|
const uint PIN_C = 27; // The common pin
|
||
|
|
Encoder enc(pio0, 0, {PIN_A, PIN_B}, PIN_C);
|
||
|
|
|
||
|
|
|
||
|
|
// The min and max value
|
||
|
|
const int MIN_VALUE = 0;
|
||
|
|
const int MAX_VALUE = 100;
|
||
|
|
|
||
|
|
int value = 50;
|
||
|
|
|
||
|
|
|
||
|
|
int main() {
|
||
|
|
stdio_init_all();
|
||
|
|
|
||
|
|
// Sleep 8 seconds to give enough time to connect up a terminal
|
||
|
|
sleep_ms(8000);
|
||
|
|
|
||
|
|
// Uncomment the below line to reverse the counting direction
|
||
|
|
// enc.direction(REVERSED_DIR);
|
||
|
|
|
||
|
|
// Initialise the encoder
|
||
|
|
enc.init();
|
||
|
|
|
||
|
|
// Print out the initial value
|
||
|
|
printf("Value = %d\n", value);
|
||
|
|
|
||
|
|
// Loop forever
|
||
|
|
while(true) {
|
||
|
|
int32_t delta = enc.delta();
|
||
|
|
if(delta != 0) {
|
||
|
|
if(delta > 0)
|
||
|
|
value = MIN(value + 1, MAX_VALUE);
|
||
|
|
else
|
||
|
|
value = MAX(value - 1, MIN_VALUE);
|
||
|
|
|
||
|
|
// Print out the new value
|
||
|
|
printf("Value = %d\n", value);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|