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72 lines
1.9 KiB
72 lines
1.9 KiB
/**
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* @file gpio_control.c
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* @brief CLI utility to control GPIOs using KED GPIO interface (Linux).
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*/
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#include "../ked/peripherals/gpio/gpio.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/**
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* @brief Simple command-line tool to test the GPIO API.
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*/
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int main(int argc, char* argv[]) {
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if (argc < 4) {
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printf("Usage: %s -pin <BCM_number> -[set|reset|toggle|read]\n", argv[0]);
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return 1;
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}
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unsigned int pin = 0;
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const char* action = NULL;
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for (int i = 1; i < argc; i++) {
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if (strcmp(argv[i], "-pin") == 0 && i + 1 < argc) {
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pin = (unsigned int)atoi(argv[++i]);
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} else if (strncmp(argv[i], "-", 1) == 0) {
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action = argv[i] + 1; // skip '-' prefix
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}
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}
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if (pin == 0 || !action) {
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fprintf(stderr, "Invalid usage.\n");
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return 1;
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}
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gpio_t gpio;
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gpio_config cfg = {
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.chipname = "/dev/gpiochip0",
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.line_offset = pin,
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.mode = GPIO_MODE_DEFAULT,
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.direction = (strcmp(action, "read") == 0) ? GPIO_DIRECTION_INPUT : GPIO_DIRECTION_OUTPUT,
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.bias = GPIO_BIAS_NONE
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};
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gpio_error_t err = ked_gpio_init(&gpio, &cfg);
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if (err != GPIO_OK) {
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if (gpio.on_error) gpio.on_error(err);
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return 1;
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}
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if (strcmp(action, "set") == 0) {
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gpio.set(true);
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//printf("GPIO%u set HIGH\n", pin);
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} else if (strcmp(action, "reset") == 0) {
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gpio.set(false);
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//printf("GPIO%u set LOW\n", pin);
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} else if (strcmp(action, "toggle") == 0) {
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gpio.toggle();
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//printf("GPIO%u toggled\n", pin);
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} else if (strcmp(action, "read") == 0) {
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bool value = gpio.read();
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printf("%s\n", value ? "1" : "0");
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} else {
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fprintf(stderr, "Unknown action: %s\n", action);
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if (gpio.on_error) gpio.on_error(GPIO_ERR_UNKNOWN);
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return 1;
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}
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gpio.deinit();
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return 0;
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}
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