mirror of
https://github.com/bytecodealliance/wasm-micro-runtime.git
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57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
/*
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* Copyright (C) 2019 Intel Corporation. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#include <stdio.h>
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#include <stdlib.h>
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//User LED
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#define LED_PORT "GPIOA"
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#define LED 5
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//User KEY
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#define KEY_PORT "GPIOC"
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#define KEY 13
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/** GPIO pin to be input. */
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#define GPIO_DIR_IN (0 << 0)
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/** GPIO pin to be output. */
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#define GPIO_DIR_OUT (1 << 0)
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void *device_get_binding(const char *);
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int gpio_pin_configure(void *, unsigned int, int);
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int gpio_pin_read(void *, unsigned int, unsigned int *);
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int gpio_pin_write(void *, unsigned int, unsigned int);
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int main(int argc, char **argv)
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{
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unsigned int gpio_value;
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unsigned char flag = 0;
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struct device *dev, *key_dev;
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dev = device_get_binding(LED_PORT);
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/* Set LED pin as output */
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gpio_pin_configure(dev, LED, GPIO_DIR_OUT);
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key_dev = device_get_binding(KEY_PORT);
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/* Set KEY pin as input */
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gpio_pin_configure(key_dev, KEY, GPIO_DIR_IN);
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while (1) {
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gpio_pin_read(key_dev, KEY, &gpio_value);
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if (!gpio_value) {
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gpio_pin_write(dev, LED, 1);
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if (!flag) {
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printf("object detected\n");
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flag = 1;
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}
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} else {
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gpio_pin_write(dev, LED, 0);
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flag = 0;
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}
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}
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return 0;
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}
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