gpios= < &gpio011GPIO_ACTIVE_HIGH>,<&gpio012GPIO_ACTIVE_HIGH>; }; }; 2.3、代码中获取设备树节点 代码: conststructgpio_dt_spec m_pin_1 = GPIO_DT_SPEC_GET_BY_IDX(DT_ALIAS(gpiote),gpios,0);conststructgpio_dt_spec m_pin_2 = GPIO_DT_SPEC_GET_BY_IDX(DT_ALIAS(gpiote),gpios,1);...
/home/arima/zephyrproject/zephyr/include/zephyr/drivers/gpio.h:369:9: note: in expansion of macro 'GPIO_DT_SPEC_GET_BY_IDX' 369 | GPIO_DT_SPEC_GET_BY_IDX(node_id, prop, 0) | ^~~~ /home/arima/zephyrproject/my_projects/Hello_World_00/src/main.c:5:41: note: in expansion of ma...
最终给了 .led 变量,它是 struct gpio_dt_spec 类型 struct gpio_dt_spc 结构如下,第1个参数是gpio设备(传入了gpiob设备),第2个是 pin = 6,flags = active_low 29:30 led最终怎么使用? .led 在 led_gpio_init 中使用 63行:led = &config->led[i] 32:57 应用层怎么用led设备? DEVICE_DT_GET_A...
*/ static const struct gpio_dt_spec led = GPIO_DT_SPEC_GET(LED0_NODE, gpios); int main(void) { int ret; if (!gpio_is_ready_dt(&led)) { return 0; } ret = gpio_pin_configure_dt(&led, GPIO_OUTPUT_ACTIVE); if (ret < 0) { return 0; } while (1) { ret = gpio_pin_...
#defineNODE_ID DT_PATH(zephyr_user) // 获取到zephyr,user节点的test-gpios属性,并把它作为gpio specifier,读入GPIO驱动。 staticconststructgpio_dt_spectest_io=GPIO_DT_SPEC_GET(NODE_ID, test_gpios); // 实际代码 intmain() { // 判断设备(这里是gpio控制器)是否已初始化完毕 ...
static const struct gpio_dt_spec led = GPIO_DT_SPEC_GET(LED0_NODE, gpios); LED 叠加文件(xiao-zephyr-examples/d0_led.overlay)为我们定义了这个 LED: / { aliases { led0 = &led0; }; leds { compatible = "gpio-leds"; led0: led_0 { ...
It’s the same structure: the LED is on pin 12 ofgpiog, and is on when the pin is low. Back to the Blinky main.c code, we then need to get the relevant information in the code: static const struct gpio_dt_spec led = GPIO_DT_SPEC_GET(LED0_NODE, gpios); ...
#defineDT_NODELED_0_NODE//从dts文件中提取LED节点 #defineDT_GPIOGPIO_DT_SPEC_GET_OR(DT_NODE,gpios,GPIO_LED_0_SPEC) #defineDT_GPIO_PINDT_GPIO_PIN voidmain(void) { conststructdevice*gpio_dev; intret; gpio_dev=device_get_binding(DT_GPIO_LABEL); ...
#defineGPIO_PINDT_ALIAS(gpio_led0) staticconststructgpio_dt_specgpio_led_spec=GPIO_DT_SPEC_GET(DT_NODELABEL(gpio0),gpio_led0); voidmain(void) { intret; /*初始化GPIO*/ ret=gpio_pin_configure_dt(gpio_led_spec,GPIO_OUTPUT_ACTIVE); ...
To understand the <boardname_pinmap.h> file, go through the existing variants/ARDUINO_NANO33BLE/arduino_nano_ble_sense_pinmap.h which shows how to use the overlay nodes inside our C programs using zephyr macros like GPIO_DT_SPEC_GET. The zephyr-project documentation on this is pretty ...