66 lines
1.6 KiB
Plaintext
66 lines
1.6 KiB
Plaintext
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void button_pressed(const struct device *dev, struct gpio_callback *cb,
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uint32_t pins)
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{
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printk("Button pressed at %" PRIu32 "\n", k_cycle_get_32());
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}
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int button(void)
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{
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int ret;
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if (!gpio_is_ready_dt(&button)) {
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printk("Error: button device %s is not ready\n",
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button.port->name);
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return 0;
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}
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ret = gpio_pin_configure_dt(&button, GPIO_INPUT);
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if (ret != 0) {
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printk("Error %d: failed to configure %s pin %d\n",
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ret, button.port->name, button.pin);
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return 0;
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}
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ret = gpio_pin_interrupt_configure_dt(&button,
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GPIO_INT_EDGE_TO_ACTIVE);
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if (ret != 0) {
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printk("Error %d: failed to configure interrupt on %s pin %d\n",
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ret, button.port->name, button.pin);
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return 0;
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}
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gpio_init_callback(&button_cb_data, button_pressed, BIT(button.pin));
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gpio_add_callback(button.port, &button_cb_data);
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printk("Set up button at %s pin %d\n", button.port->name, button.pin);
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if (led.port && !device_is_ready(led.port)) {
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printk("Error %d: LED device %s is not ready; ignoring it\n",
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ret, led.port->name);
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led.port = NULL;
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}
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if (led.port) {
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ret = gpio_pin_configure_dt(&led, GPIO_OUTPUT);
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if (ret != 0) {
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printk("Error %d: failed to configure LED device %s pin %d\n",
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ret, led.port->name, led.pin);
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led.port = NULL;
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} else {
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printk("Set up LED at %s pin %d\n", led.port->name, led.pin);
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}
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}
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printk("Press the button\n");
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if (led.port) {
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while (1) {
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/* If we have an LED, match its state to the button's. */
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int val = gpio_pin_get_dt(&button);
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if (val >= 0) {
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gpio_pin_set_dt(&led, val);
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}
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k_msleep(SLEEP_TIME_MS);
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}
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}
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return 0;
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}
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