d356403664
Implement a sample app to perform basic GPIO tracing. Signed-off-by: Alexander Lay <alexanderlay@tenstorrent.com> Signed-off-by: Yang Xu <yangxu@tenstorrent.com>
70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
/*
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* Copyright (c) 2024 Tenstorrent AI ULC
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <zephyr/sys/printk.h>
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#include <zephyr/logging/log.h>
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#include <zephyr/drivers/gpio.h>
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#include <zephyr/drivers/gpio/gpio_emul.h>
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/* size of stack area used by each thread */
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#define STACKSIZE (2048)
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/* scheduling priority used by each thread */
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#define PRIORITY 7
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void test_handler(const struct device *port, struct gpio_callback *cb, gpio_port_pins_t pins)
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{
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printk("Interrupt detected!\n");
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}
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void gpio_sample(void)
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{
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const struct device *dev = DEVICE_DT_GET(DT_NODELABEL(gpio_emul));
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if (!device_is_ready(dev)) {
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printk("%s: device not ready.\n", dev->name);
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return;
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}
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/* Configure pin 0 as output and toggle */
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gpio_pin_configure(dev, 0, GPIO_OUTPUT);
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gpio_pin_set(dev, 0, 1);
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gpio_pin_set(dev, 0, 0);
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/* Configure pin 1 as input */
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gpio_pin_configure(dev, 1, GPIO_INPUT);
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/* Read pin 1 */
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gpio_emul_input_set(dev, 1, 1);
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gpio_pin_get(dev, 1);
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gpio_emul_input_set(dev, 1, 0);
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gpio_pin_get(dev, 1);
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/* Setup pin 1 for interrupt */
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gpio_pin_interrupt_configure(dev, 1, GPIO_INT_EDGE_RISING);
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static struct gpio_callback gpio_cb;
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gpio_init_callback(&gpio_cb, test_handler, BIT(1));
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gpio_add_callback(dev, &gpio_cb);
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/* Trigger interrupt */
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gpio_emul_input_set(dev, 1, 1);
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/* Remove interrupt */
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gpio_remove_callback(dev, &gpio_cb);
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}
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static void gpio_thread(void *dummy1, void *dummy2, void *dummy3)
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{
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ARG_UNUSED(dummy1);
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ARG_UNUSED(dummy2);
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ARG_UNUSED(dummy3);
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gpio_sample();
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}
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K_THREAD_DEFINE(thread_gpio, STACKSIZE, gpio_thread, NULL, NULL, NULL, PRIORITY, 0, 0);
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