pinctrl-single,bits = < 0 0x0 0xf000 >;
时间: 2024-06-02 09:12:04 浏览: 15
这是一个 Device Tree 中的节点属性,用于描述一个 PIN 控制器的寄存器配置。其中,“pinctrl-single”表示使用单个寄存器来控制 PIN 状态,而“bits”表示对该寄存器的位域进行配置。在这个例子中,该节点配置了一个 16 位寄存器,其中高 4 位为保留位,低 12 位表示 12 个不同的 PIN 的状态,每个 PIN 占用 1 位。具体来说,0x0 表示保留位的值为 0,而 0xf000 则表示 12 个 PIN 的状态都为 1。
相关问题
<form class="ant-form ant-form-horizontal"><div class="ant-row ant-form-item"style="row-gap: 0px;"><div class="ant-col ant-form-item-label"style="width: 100px;"><label for="form_item_licDetailType"class="ant-form-item-required"title="license类型">license类型<!----></label></div><div class="ant-col ant-form-item-control"><div class="ant-form-item-control-input"><div class="ant-form-item-control-input-content"><div class="ant-select ant-select-single ant-select-allow-clear ant-select-show-arrow"><!----><div class="ant-select-selector"><span class="ant-select-selection-search"><input type="search"id="form_item_licDetailType"autocomplete="off"class="ant-select-selection-search-input"role="combobox"aria-haspopup="listbox"aria-owns="form_item_licDetailType_list"aria-autocomplete="list"aria-controls="form_item_licDetailType_list"aria-activedescendant="form_item_licDetailType_list_0"readonly=""unselectable="on"style="opacity: 0;"aria-expanded="false"></span><!----><span class="ant-select-selection-placeholder">请选择</span></div><span class="ant-select-arrow"unselectable="on"aria-hidden="true"style="user-select: none;"><span role="img"aria-label="down"class="anticon anticon-down ant-select-suffix"><svg focusable="false"class=""data-icon="down"width="1em"height="1em"fill="currentColor"aria-hidden="true"viewBox="64 64 896 896"><path d="M884 256h-75c-5.1 0-9.9 2.5-12.9 6.6L512 654.2 227.9 262.6c-3-4.1-7.8-6.6-12.9-6.6h-75c-6.5 0-10.3 7.4-6.5 12.7l352.6 486.1c12.8 17.6 39 17.6 51.7 0l352.6-486.1c3.9-5.3.1-12.7-6.4-12.7z"></path></svg></span></span><!----></div></div><!----></div><!----><!----></div></div></form> 请进行selemiu 元素定位
对于给定的代码片段,可以使用Selenium进行元素定位。以下是使用Python和Selenium的示例代码来定位该元素:
```python
from selenium import webdriver
from selenium.webdriver.common.by import By
# 初始化webdriver
driver = webdriver.Chrome()
# 打开网页
driver.get("your_page_url")
# 使用CSS选择器定位元素
element = driver.find_element(By.CSS_SELECTOR, "#form_item_licDetailType")
# 输出元素文本
print(element.text)
# 关闭浏览器
driver.quit()
```
在上述代码中,你需要将"your_page_url"替换为你要打开的网页链接。然后,使用`driver.find_element()`方法和`By.CSS_SELECTOR`来定位元素,并使用`element.text`来获取元素的文本。
请注意,你需要提前安装Selenium库,并下载相应的浏览器驱动程序(例如ChromeDriver)以便与Selenium一起使用。
void button_handler(struct Button* handle) { uint8_t read_gpio_level = handle->hal_button_Level(handle->button_id); //ticks counter working.. if((handle->state) > 0) handle->ticks++; /*------------button debounce handle---------------*/ if(read_gpio_level != handle->button_level) { //not equal to prev one //continue read 3 times same new level change if(++(handle->debounce_cnt) >= DEBOUNCE_TICKS) { handle->button_level = read_gpio_level; handle->debounce_cnt = 0; } } else { //leved not change ,counter reset. handle->debounce_cnt = 0; } /*-----------------State machine-------------------*/ switch (handle->state) { case 0: if(handle->button_level == handle->active_level) { //start press down handle->event = (uint8_t)PRESS_DOWN; EVENT_CB(PRESS_DOWN); handle->ticks = 0; handle->repeat = 1; handle->state = 1; } else { handle->event = (uint8_t)NONE_PRESS; } break; case 1: if(handle->button_level != handle->active_level) { //released press up handle->event = (uint8_t)PRESS_UP; EVENT_CB(PRESS_UP); handle->ticks = 0; handle->state = 2; } else if(handle->ticks > LONG_TICKS) { handle->event = (uint8_t)LONG_PRESS_START; EVENT_CB(LONG_PRESS_START); handle->state = 5; } break; case 2: if(handle->button_level == handle->active_level) { //press down again handle->event = (uint8_t)PRESS_DOWN; EVENT_CB(PRESS_DOWN); handle->repeat++; EVENT_CB(PRESS_REPEAT); // repeat hit handle->ticks = 0; handle->state = 3; } else if(handle->ticks > SHORT_TICKS) { //released timeout if(handle->repeat == 1) { handle->event = (uint8_t)SINGLE_CLICK; EVENT_CB(SINGLE_CLICK); } else if(handle->repeat == 2) { handle->event = (uint8_t)DOUBLe_CLICK; EVENT_CB(DOUBLe_CLICK); // repeat hit } handle->state = 0; } break; case 3: if(handle->button_level != handle->active_level) { //released press up handle->event = (uint8_t)PRESS_UP; EVENT_CB(PRESS_UP); if(handle->ticks < SHORT_TICKS) { handle->ticks = 0; handle->state = 2; //repeat press } else { handle->state = 0; } }else if(handle->ticks > SHORT_TICKS){ // long press up handle->state = 0; } break; case 5: if(handle->button_level == handle->active_level) { //continue hold trigger handle->event = (uint8_t)LONG_PRESS_HOLD; EVENT_CB(LONG_PRESS_HOLD); } else { //releasd handle->event = (uint8_t)PRESS_UP; EVENT_CB(PRESS_UP); handle->state = 0; //reset } break; default: handle->state = 0; //reset break; } }帮我详细注释这段代码
这段代码是一个按键处理函数,主要用于处理按键的状态和事件。下面是对代码的详细注释:
```c
void button_handler(struct Button* handle) {
// 读取按键GPIO端口的电平值
uint8_t read_gpio_level = handle->hal_button_Level(handle->button_id);
// 计数器开始工作
if((handle->state) > 0) handle->ticks++;
/*------------按键消抖处理---------------*/
if(read_gpio_level != handle->button_level) { //如果读到的电平值不同于之前的
//连续读取3次相同的电平值
if(++(handle->debounce_cnt) >= DEBOUNCE_TICKS) {
handle->button_level = read_gpio_level; //更新电平值
handle->debounce_cnt = 0; //重置消抖计数器
}
} else { //如果电平值没有变化,重置消抖计数器
handle->debounce_cnt = 0;
}
/*-----------------状态机处理-------------------*/
switch (handle->state) {
case 0: //初始状态
if(handle->button_level == handle->active_level) { //按键按下
handle->event = (uint8_t)PRESS_DOWN; //设置按键事件
EVENT_CB(PRESS_DOWN); //触发事件回调函数
handle->ticks = 0; //重置计数器
handle->repeat = 1; //重置按键重复次数
handle->state = 1; //进入下一个状态
} else {
handle->event = (uint8_t)NONE_PRESS; //没有按键按下
}
break;
case 1: //按键按下状态
if(handle->button_level != handle->active_level) { //按键松开
handle->event = (uint8_t)PRESS_UP; //设置按键事件
EVENT_CB(PRESS_UP); //触发事件回调函数
handle->ticks = 0; //重置计数器
handle->state = 2; //进入下一个状态
} else if(handle->ticks > LONG_TICKS) { //按键按下超过长按时间
handle->event = (uint8_t)LONG_PRESS_START; //设置按键事件
EVENT_CB(LONG_PRESS_START); //触发事件回调函数
handle->state = 5; //进入下一个状态
}
break;
case 2: //单次按键按下后的状态
if(handle->button_level == handle->active_level) { //按键再次按下
handle->event = (uint8_t)PRESS_DOWN; //设置按键事件
EVENT_CB(PRESS_DOWN); //触发事件回调函数
handle->repeat++; //增加按键重复次数
EVENT_CB(PRESS_REPEAT); //触发按键重复事件回调函数
handle->ticks = 0; //重置计数器
handle->state = 3; //进入下一个状态
} else if(handle->ticks > SHORT_TICKS) { //按键松开超过短按时间
if(handle->repeat == 1) { //单击事件
handle->event = (uint8_t)SINGLE_CLICK; //设置按键事件
EVENT_CB(SINGLE_CLICK); //触发事件回调函数
} else if(handle->repeat == 2) { //双击事件
handle->event = (uint8_t)DOUBLE_CLICK; //设置按键事件
EVENT_CB(DOUBLE_CLICK); //触发事件回调函数
}
handle->state = 0; //回到初始状态
}
break;
case 3: //按键重复状态
if(handle->button_level != handle->active_level) { //按键松开
handle->event = (uint8_t)PRESS_UP; //设置按键事件
EVENT_CB(PRESS_UP); //触发事件回调函数
if(handle->ticks < SHORT_TICKS) { //按键松开时间小于短按时间
handle->ticks = 0; //重置计数器
handle->state = 2; //回到单次按键按下后的状态
} else { //按键松开时间大于等于短按时间
handle->state = 0; //回到初始状态
}
} else if(handle->ticks > SHORT_TICKS){ //按键按下时间大于短按时间
handle->state = 0; //回到初始状态
}
break;
case 5: //长按状态
if(handle->button_level == handle->active_level) { //按键继续按下
handle->event = (uint8_t)LONG_PRESS_HOLD; //设置按键事件
EVENT_CB(LONG_PRESS_HOLD); //触发事件回调函数
} else { //按键松开
handle->event = (uint8_t)PRESS_UP; //设置按键事件
EVENT_CB(PRESS_UP); //触发事件回调函数
handle->state = 0; //回到初始状态
}
break;
default: //其他状态,回到初始状态
handle->state = 0;
break;
}
}
```