#define RED 19
#define YELLOW 20
#define GREEN 21
#include "segment.pio.h"
uint8_t digits[] = {
0b11000000, // 0
0b11111001, // 1
0b10100100, // 2
0b10110000, // 3
0b10011001, // 4
0b10010010, // 5
0b10000010, // 6
0b11111000, // 7
0b10000000, // 8
0b10011000, // 9
};
const uint8_t first_segment_pin = 2;
const uint8_t first_digit_pin = 10;
void setup() {
pinMode(RED, OUTPUT);
Serial1.begin(115200);
Serial1.println("Raspberry Pi Pico PIO 7-Segment Example");
// Load the PIO program and initialize the machine
auto offset = pio_add_program(pio0, &segment_program);
segment_program_init(pio0, 0, offset, first_segment_pin, first_digit_pin);
}
void displayNumber(uint value) {
pio_sm_put(pio0, 0,
digits[value / 1000 % 10] << 24 |
digits[value / 100 % 10] << 16 |
digits[value / 10 % 10] << 8 |
digits[value % 10]
);
}
int i = 0;
void loop() {
displayNumber(i++);
delay(100);
digitalWrite(GREEN, HIGH);
delay(3000);
digitalWrite(GREEN, LOW);
digitalWrite(YELLOW, HIGH);
delay(500);
digitalWrite(YELLOW, LOW);
digitalWrite(RED, HIGH);
delay(2000);
digitalWrite(YELLOW, HIGH);
delay(500);
digitalWrite(YELLOW, LOW);
digitalWrite(RED, LOW);
}