kopia lustrzana https://github.com/pimoroni/pimoroni-pico
55 wiersze
1.4 KiB
C++
55 wiersze
1.4 KiB
C++
#include <cstdio>
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#include "pico/stdlib.h"
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#include "encoder.hpp"
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/*
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A demonstration of a rotary encoder being used to
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select items based on its physical position.
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This requires that the encoder is positioned in the same
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direction at the start of every program run (e.g. upwards).
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"""
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*/
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using namespace encoder;
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// Create an encoder on the 3 ADC pins, using PIO 0 and State Machine 0
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const uint PIN_A = 26; // The A channel pin
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const uint PIN_B = 28; // The B channel pin
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const uint PIN_C = 27; // The common pin
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Encoder enc(pio0, 0, {PIN_A, PIN_B}, PIN_C);
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// An array of items, up to the encoder's counts_per_rev
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const char* ITEMS[] = {"Red", "Orange", "Yellow", "Green", "Blue", "Indigo", "Violet", "Black", "White"};
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const int16_t NUM_ITEMS = count_of(ITEMS);
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int16_t last_step = -1;
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int main() {
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stdio_init_all();
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// Sleep 8 seconds to give enough time to connect up a terminal
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sleep_ms(8000);
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// Uncomment the below line to reverse the counting direction
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// enc.direction(REVERSED_DIR);
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// Initialise the encoder
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enc.init();
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// Loop forever
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while(true) {
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int16_t step = enc.step();
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if(step != last_step) {
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if(step < NUM_ITEMS)
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printf("%d/%d: %s\n", step, (int)enc.counts_per_rev() - 1, ITEMS[step]);
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else
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printf("%d/%d: %s\n", step, (int)enc.counts_per_rev() - 1, "Undefined");
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last_step = step;
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}
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}
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}
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