50 lines
957 B
C++
50 lines
957 B
C++
#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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static const uint8_t IOE_ADC_PIN = 10;
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BreakoutIOExpander ioe(0x18);
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bool toggle = false;
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int main() {
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#ifdef PICO_DEFAULT_LED_PIN
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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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#endif
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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_adc_vref(5.0f); //Uncomment this if running the IOExpander off a 5V supply
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ioe.set_mode(IOE_ADC_PIN, IOExpander::PIN_ADC);
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while(true) {
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#ifdef PICO_DEFAULT_LED_PIN
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gpio_put(PICO_DEFAULT_LED_PIN, toggle);
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#endif
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toggle = !toggle;
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float voltage = ioe.input_as_voltage(IOE_ADC_PIN);
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printf("Voltage: %f\n", voltage);
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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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#ifdef PICO_DEFAULT_LED_PIN
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gpio_put(PICO_DEFAULT_LED_PIN, true);
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#endif
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}
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return 0;
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}
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