这绝对是可行的，因为我已经能够在另一台电脑上做到这一点，但是在我正在工作的这台电脑上，我遇到了问题，似乎我忘记了一些东西，但我不确定为什么。
编写以下代码后运行
zephyr buildconst struct device *dev = DEVICE_DT_GET(DT_NODELABEL(mygpio));
if (!device_is_ready(dev)) {
printk("unready");
}
我遇到以下情况：
undefined reference to `__device_dts_ord_17'我一直在遵循本指南如何解决问题，但无济于事：https://docs.zephyrproject.org/latest/build/dts/troubleshooting.html
以下文件是nucleo_f334r8.overlay文件
/ {
compatible = "st,stm32f334r8-nucleo";
mygpio: mygpio {
compatible = "zephyr,mygpio";
status = "okay";
gpios = <&gpioa 12 (GPIO_ACTIVE_HIGH)>,
<&gpiob 5 (GPIO_ACTIVE_HIGH)>,
<&gpiob 10 (GPIO_ACTIVE_HIGH)>,
<&gpiob 6 (GPIO_ACTIVE_HIGH)>;
};
};
&usart2 {
status = "okay";
};
&timers2 {
status = "okay";
st,prescaler = <4095>;
counter: counter {
compatible = "st,stm32-counter";
status = "okay";
};
};
&gpioa {
status = "okay";
};
&gpiob {
status = "okay";
};
以下是我的prj.conf文件
CONFIG_SERIAL=y
CONFIG_UART_INTERRUPT_DRIVEN=y
CONFIG_COUNTER=y
CONFIG_COUNTER_TIMER_STM32=y
CONFIG_RING_BUFFER=y
CONFIG_GPIO=y
我在我的 dts/bindings 中定义了一个绑定
description: |
mygpio
compatible: "zephyr,mygpio"
include: base.yaml
properties:
gpios:
type: phandle-array
required: true
description: List of gpios
在 build 文件夹内，zephyr.dts 内，我的节点已成功生成：
mygpio: mygpio {
compatible = "zephyr,mygpio";
status = "okay";
gpios = < &gpioa 0xc 0x0 >, < &gpiob 0x5 0x0 >, < &gpiob 0xa 0x0 >, < &gpiob 0x6 0x0 >;
};
devicetree_ generated.h 包含我的节点
...
* 16 /soc/pin-controller@48000000/gpio@48000400
* 17 /mygpio
* 18 /st-morpho-header
...
devicetree_ generated.h 还包含分配引脚等的各种宏
/* Node's full path: */
#define DT_N_S_mygpio_PATH "/mygpio"
/* Node's name with unit-address: */
#define DT_N_S_mygpio_FULL_NAME "mygpio"
/* Node parent (/) identifier: */
#define DT_N_S_mygpio_PARENT DT_N
/* Node's index in its parent's list of children: */
#define DT_N_S_mygpio_CHILD_IDX 15
/* Helper macros for child nodes of this node. */
#define DT_N_S_mygpio_FOREACH_CHILD(fn)
#define DT_N_S_mygpio_FOREACH_CHILD_SEP(fn, sep)
#define DT_N_S_mygpio_FOREACH_CHILD_VARGS(fn, ...)
#define DT_N_S_mygpio_FOREACH_CHILD_SEP_VARGS(fn, sep, ...)
#define DT_N_S_mygpio_FOREACH_CHILD_STATUS_OKAY(fn)
#define DT_N_S_mygpio_FOREACH_CHILD_STATUS_OKAY_SEP(fn, sep)
#define DT_N_S_mygpio_FOREACH_CHILD_STATUS_OKAY_VARGS(fn, ...)
#define DT_N_S_mygpio_FOREACH_CHILD_STATUS_OKAY_SEP_VARGS(fn, sep, ...)
/* Node's dependency ordinal: */
#define DT_N_S_mygpio_ORD 17
#define DT_N_S_mygpio_ORD_STR_SORTABLE 00017
/* Ordinals for what this node depends on directly: */
#define DT_N_S_mygpio_REQUIRES_ORDS \
0, /* / */ \
15, /* /soc/pin-controller@48000000/gpio@48000000 */ \
16, /* /soc/pin-controller@48000000/gpio@48000400 */
/* Ordinals for what depends directly on this node: */
#define DT_N_S_mygpio_SUPPORTS_ORDS /* nothing */
/* Existence and alternate IDs: */
#define DT_N_S_mygpio_EXISTS 1
#define DT_N_INST_0_zephyr_mygpio DT_N_S_mygpio
#define DT_N_NODELABEL_mygpio DT_N_S_mygpio
/* Macros for properties that are special in the specification: */
#define DT_N_S_mygpio_REG_NUM 0
#define DT_N_S_mygpio_RANGES_NUM 0
#define DT_N_S_mygpio_FOREACH_RANGE(fn)
#define DT_N_S_mygpio_IRQ_NUM 0
#define DT_N_S_mygpio_COMPAT_MATCHES_zephyr_mygpio 1
#define DT_N_S_mygpio_COMPAT_VENDOR_IDX_0_EXISTS 1
#define DT_N_S_mygpio_COMPAT_VENDOR_IDX_0 "Zephyr-specific binding"
#define DT_N_S_mygpio_COMPAT_MODEL_IDX_0_EXISTS 1
#define DT_N_S_mygpio_COMPAT_MODEL_IDX_0 "mygpio"
#define DT_N_S_mygpio_STATUS_okay 1
/* Pin control (pinctrl-<i>, pinctrl-names) properties: */
#define DT_N_S_mygpio_PINCTRL_NUM 0
/* Generic property macros: */
#define DT_N_S_mygpio_P_gpios_IDX_0_EXISTS 1
#define DT_N_S_mygpio_P_gpios_IDX_0_PH DT_N_S_soc_S_pin_controller_48000000_S_gpio_48000000
#define DT_N_S_mygpio_P_gpios_IDX_0_VAL_pin 12
#define DT_N_S_mygpio_P_gpios_IDX_0_VAL_pin_EXISTS 1
#define DT_N_S_mygpio_P_gpios_IDX_0_VAL_flags 0
#define DT_N_S_mygpio_P_gpios_IDX_0_VAL_flags_EXISTS 1
#define DT_N_S_mygpio_P_gpios_IDX_1_EXISTS 1
#define DT_N_S_mygpio_P_gpios_IDX_1_PH DT_N_S_soc_S_pin_controller_48000000_S_gpio_48000400
#define DT_N_S_mygpio_P_gpios_IDX_1_VAL_pin 5
#define DT_N_S_mygpio_P_gpios_IDX_1_VAL_pin_EXISTS 1
#define DT_N_S_mygpio_P_gpios_IDX_1_VAL_flags 0
#define DT_N_S_mygpio_P_gpios_IDX_1_VAL_flags_EXISTS 1
#define DT_N_S_mygpio_P_gpios_IDX_2_EXISTS 1
#define DT_N_S_mygpio_P_gpios_IDX_2_PH DT_N_S_soc_S_pin_controller_48000000_S_gpio_48000400
#define DT_N_S_mygpio_P_gpios_IDX_2_VAL_pin 10
#define DT_N_S_mygpio_P_gpios_IDX_2_VAL_pin_EXISTS 1
#define DT_N_S_mygpio_P_gpios_IDX_2_VAL_flags 0
#define DT_N_S_mygpio_P_gpios_IDX_2_VAL_flags_EXISTS 1
#define DT_N_S_mygpio_P_gpios_IDX_3_EXISTS 1
#define DT_N_S_mygpio_P_gpios_IDX_3_PH DT_N_S_soc_S_pin_controller_48000000_S_gpio_48000400
#define DT_N_S_mygpio_P_gpios_IDX_3_VAL_pin 6
#define DT_N_S_mygpio_P_gpios_IDX_3_VAL_pin_EXISTS 1
#define DT_N_S_mygpio_P_gpios_IDX_3_VAL_flags 0
#define DT_N_S_mygpio_P_gpios_IDX_3_VAL_flags_EXISTS 1
#define DT_N_S_mygpio_P_gpios_FOREACH_PROP_ELEM(fn) fn(DT_N_S_mygpio, gpios, 0) \
fn(DT_N_S_mygpio, gpios, 1) \
fn(DT_N_S_mygpio, gpios, 2) \
fn(DT_N_S_mygpio, gpios, 3)
#define DT_N_S_mygpio_P_gpios_FOREACH_PROP_ELEM_SEP(fn, sep) fn(DT_N_S_mygpio, gpios, 0) DT_DEBRACKET_INTERNAL sep \
fn(DT_N_S_mygpio, gpios, 1) DT_DEBRACKET_INTERNAL sep \
fn(DT_N_S_mygpio, gpios, 2) DT_DEBRACKET_INTERNAL sep \
fn(DT_N_S_mygpio, gpios, 3)
#define DT_N_S_mygpio_P_gpios_FOREACH_PROP_ELEM_VARGS(fn, ...) fn(DT_N_S_mygpio, gpios, 0, __VA_ARGS__) \
fn(DT_N_S_mygpio, gpios, 1, __VA_ARGS__) \
fn(DT_N_S_mygpio, gpios, 2, __VA_ARGS__) \
fn(DT_N_S_mygpio, gpios, 3, __VA_ARGS__)
#define DT_N_S_mygpio_P_gpios_FOREACH_PROP_ELEM_SEP_VARGS(fn, sep, ...) fn(DT_N_S_mygpio, gpios, 0, __VA_ARGS__) DT_DEBRACKET_INTERNAL sep \
fn(DT_N_S_mygpio, gpios, 1, __VA_ARGS__) DT_DEBRACKET_INTERNAL sep \
fn(DT_N_S_mygpio, gpios, 2, __VA_ARGS__) DT_DEBRACKET_INTERNAL sep \
fn(DT_N_S_mygpio, gpios, 3, __VA_ARGS__)
#define DT_N_S_mygpio_P_gpios_LEN 4
#define DT_N_S_mygpio_P_gpios_EXISTS 1
#define DT_N_S_mygpio_P_status "okay"
#define DT_N_S_mygpio_P_status_STRING_UNQUOTED okay
#define DT_N_S_mygpio_P_status_STRING_TOKEN okay
#define DT_N_S_mygpio_P_status_STRING_UPPER_TOKEN OKAY
#define DT_N_S_mygpio_P_status_IDX_0 "okay"
#define DT_N_S_mygpio_P_status_IDX_0_EXISTS 1
#define DT_N_S_mygpio_P_status_ENUM_IDX 1
#define DT_N_S_mygpio_P_status_ENUM_VAL_okay_EXISTS 1
#define DT_N_S_mygpio_P_status_ENUM_TOKEN okay
#define DT_N_S_mygpio_P_status_ENUM_UPPER_TOKEN OKAY
#define DT_N_S_mygpio_P_status_FOREACH_PROP_ELEM(fn) fn(DT_N_S_mygpio, status, 0)
#define DT_N_S_mygpio_P_status_FOREACH_PROP_ELEM_SEP(fn, sep) fn(DT_N_S_mygpio, status, 0)
#define DT_N_S_mygpio_P_status_FOREACH_PROP_ELEM_VARGS(fn, ...) fn(DT_N_S_mygpio, status, 0, __VA_ARGS__)
#define DT_N_S_mygpio_P_status_FOREACH_PROP_ELEM_SEP_VARGS(fn, sep, ...) fn(DT_N_S_mygpio, status, 0, __VA_ARGS__)
#define DT_N_S_mygpio_P_status_LEN 1
#define DT_N_S_mygpio_P_status_EXISTS 1
#define DT_N_S_mygpio_P_compatible {"zephyr,mygpio"}
#define DT_N_S_mygpio_P_compatible_IDX_0 "zephyr,mygpio"
#define DT_N_S_mygpio_P_compatible_IDX_0_STRING_UNQUOTED zephyr,mygpio
#define DT_N_S_mygpio_P_compatible_IDX_0_STRING_TOKEN zephyr_mygpio
#define DT_N_S_mygpio_P_compatible_IDX_0_STRING_UPPER_TOKEN ZEPHYR_MYGPIO
#define DT_N_S_mygpio_P_compatible_IDX_0_EXISTS 1
#define DT_N_S_mygpio_P_compatible_FOREACH_PROP_ELEM(fn) fn(DT_N_S_mygpio, compatible, 0)
#define DT_N_S_mygpio_P_compatible_FOREACH_PROP_ELEM_SEP(fn, sep) fn(DT_N_S_mygpio, compatible, 0)
#define DT_N_S_mygpio_P_compatible_FOREACH_PROP_ELEM_VARGS(fn, ...) fn(DT_N_S_mygpio, compatible, 0, __VA_ARGS__)
#define DT_N_S_mygpio_P_compatible_FOREACH_PROP_ELEM_SEP_VARGS(fn, sep, ...) fn(DT_N_S_mygpio, compatible, 0, __VA_ARGS__)
#define DT_N_S_mygpio_P_compatible_LEN 1
#define DT_N_S_mygpio_P_compatible_EXISTS 1
#define DT_N_S_mygpio_P_wakeup_source 0
#define DT_N_S_mygpio_P_wakeup_source_EXISTS 1
#define DT_N_S_mygpio_P_zephyr_pm_device_runtime_auto 0
#define DT_N_S_mygpio_P_zephyr_pm_device_runtime_auto_EXISTS 1
然后我检查了 zephyr.map 文件，它没有任何对
__device_dts_ord_17所有默认外围设备都可以正常工作，例如，使用
gpioa想问一下，这个问题解决了吗？我和你有同样的问题。