50 lines
1014 B
C++
50 lines
1014 B
C++
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#include "pico/stdlib.h"
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#include <stdio.h>
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#include "breakout_ioexpander.hpp"
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using namespace pimoroni;
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//Connect a button between this pin and ground
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static const uint8_t IOE_BUTTON_PIN = 14;
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BreakoutIOExpander ioe(0x18);
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bool last_state = true;
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int main() {
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gpio_init(PICO_DEFAULT_LED_PIN);
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gpio_set_dir(PICO_DEFAULT_LED_PIN, GPIO_OUT);
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stdio_init_all();
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if(ioe.init()) {
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printf("IOExpander found...\n");
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ioe.set_mode(IOE_BUTTON_PIN, IOExpander::PIN_IN_PULL_UP);
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while(true) {
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bool state = ioe.input(IOE_BUTTON_PIN);
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if(state != last_state) {
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if(state) {
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printf("Button has been released\n");
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gpio_put(PICO_DEFAULT_LED_PIN, false);
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}
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else {
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printf("Button has been pressed\n");
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gpio_put(PICO_DEFAULT_LED_PIN, true);
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}
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last_state = state;
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}
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sleep_ms(20);
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}
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}
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else {
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printf("IOExpander not found :'(\n");
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gpio_put(PICO_DEFAULT_LED_PIN, true);
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}
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return 0;
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}
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