C/C++ • Raspberry Pi 5 GPIO

Code:

#include <gpiod.h>#include <stdio.h>#include <unistd.h>#define CHIP "/dev/gpiochip0"#define LINE 17#define SLEEP_TIME 5000000int main() {    struct gpiod_chip *chip;    struct gpiod_line *line;    int ret;    chip = gpiod_chip_open(CHIP);    if (!chip) {        perror("Open chip failed");        return 1;    }    line = gpiod_chip_get_line(chip, LINE);    if (!line) {        perror("Get line failed");        gpiod_chip_close(chip);        return 1;    }    ret = gpiod_line_request_output(line, "blink", 0);    if (ret < 0) {        perror("Request line as output failed");        gpiod_chip_close(chip);        return 1;    }    while (1) {        gpiod_line_set_value(line, 1);        usleep(SLEEP_TIME);        gpiod_line_set_value(line, 0);        usleep(SLEEP_TIME);    }    gpiod_line_release(line);    gpiod_chip_close(chip);    return 0;}