of_find_property函数可以在设备节点的属性列表中查找指定的属性,函数原型如下: structproperty *of_find_property(conststructdevice_node *np,constchar*name,int*lenp); 其中: np:设备节点; name:属性名称; lenp:属性长度,单位为字节; 比如下面一段代码,通过of_find_property函数获取设备的属性"linux,gpio-keym...
struct property *of_find_property(const struct device_node *np,const char *name,int *lenp); 其中: np:设备节点; name:属性名称; lenp:属性长度,单位为字节; 比如下面一段代码,通过of_find_property函数获取设备的属性"linux,gpio-keymap"的值。 of_find_property(client->dev.of_node, "linux,gpio-...
主要来练习of_find_node_by_path, of_find_node_by_name,of_property_read_u32_array ,of_property_read_string ,of_property_count_elems_of_size , of_get_next_child ,of_get_parent函数 #include <linux/of.h>#include<linux/device.h>#include<linux/platform_device.h>#include<linux/err.h>#inc...
go-rpio - GPIO for Go, doesn't require cgo. goroslib - Robot Operating System (ROS) library for Go. joystick - a polled API to read the state of an attached joystick. sysinfo - A pure Go library providing Linux OS / kernel / hardware system information. ⬆ back to top Images Libr...
根据GPIO编号获取对应的中断号。 参数说明: gpio:GPIO编号,表示要获取中断号的GPIO。 返回值: 是一个整数,表示成功获取的中断号。 69.1.5 of_irq_get函数 该函数的主要功能是从给定的设备节点的"interrupts"属性中解析并获取对应的中断号。"interrupts"属性通常以一种特定的格式表示,可以包含一个或多个中断号。通...
int flags = of_get_named_gpio_flags(np, "gpio-name", 0); 上述示例中,我们首先使用 of_find_node_by_path() 函数获取设备树中指定路径的节点,并将其存储在 np 中。然后,我们调用 of_get_named_gpio_flags() 函数来获取名为 "gpio-name" 的 GPIO 设备的标志位,并将其存储在 flags 中。©...
--led-gpio-mapping=<gpio-mapping>: Name of GPIO mapping used. Default "regular" This can have values such as --led-gpio-mapping=regularThe standard mapping of this library, described in thewiringpage. --led-gpio-mapping=adafruit-hatThe Adafruit HAT/Bonnet, that uses this library or ...
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GPIO BCM (GPIO.BCM) is the Broadcom Soc Channel numbering. In the diagram above, you can find the number after GPIO. For example, on the Raspberry Pi 5, the pin below 3v3 is GPIO2, so the number for this pin is 2 in BCM mode. A downside to BCM is that they have changed between...
Error (175005): Could not find a location with: IO_FUNCTION of GPIO (1 location affected)Info (175029): pin containing PIN_AT45Info (175015): The I/O pad pcie_refclk0 is constrained to the location PIN_AT45 due to: User Location Constraints (PIN_AT45) Fi...