//GPIO FUNCTIONS #defineINPUT0x00 //输入 #defineINPUT_PULLUP0x02 //上拉输入 #defineINPUT_PULLDOWN_160x04// PULLDOWN only possible for pin16下拉输入仅适用于PIN16脚 #defineOUTPUT0x01 //输出 #defineOUTPUT_OPEN_DRAIN0x03 //开漏输出 #defineWAKEUP_PULLUP0x05 //上拉唤醒 #defineWAKEUP_PULLDOWN...
fflush()也可用于标准输入(stdin)和标准输出(stdout),用来清空标准输入输出缓冲区。stdin是standard input的缩写,即标准输入,一般是指键盘;标准输入缓冲区即是用来暂存从键盘输入的内容的缓冲区。stdout是standard output 的缩写,即标准输出,一般是指显示器;标准输出缓冲区即是用来暂存将要显示的内容的缓冲区。 清空标准...
void setup() { // put your setup code here, to run once: pinMode(2,OUTPUT); digitalWrite(2,HIGH); } void loop() { // put your main code here, to run repeatedly: } 选择开发板与端口: 完成上传: 到这一步,相信你已成功完成首个ESP32案例——点亮板载LED! 后续我会继续分享零基础入门ESP...
BTN_State = digitalRead(BTN_GPIO);// 读取按键状态digitalWrite(LED_GPIO, BTN_State);// 把按键状态做为LED灯的输出}voidsetup(){ pinMode(LED_GPIO, OUTPUT);//LED输出模式pinMode(BTN_GPIO, INPUT);//输入上拉模式attachInterrupt(BTN_GPIO, bt_callBack, CHANGE);//使能中断}voidloop(){ } 主程序...
(GPIO2)*///os_install_putc1((void *)uart1_write_char); //use this onetooutputdebug information via uart1 ///*option3:outputfromuart0 will skipcurrentbyte if fifoisfullnow... *//*see uart0_write_char_no_wait:you canoutputvia a bufferoroutputdirectly *//*os_printfoutputuart data ...
volatile byte state=LOW;voidIRAM_ATTRchange(){state=!state;}voidsetup(){// put your setup code here, to run once:Serial.begin(9600);pinMode(2,OUTPUT);pinMode(27,INPUT_PULLUP);attachInterrupt(digitalPinToInterrupt(27),change,CHANGE);}voidloop(){digitalWrite(2,state);// put your main cod...
pinMode(led, OUTPUT); digitalWrite(2, HIGH); //初始化开关 pinMode(sw, OUTPUT); digitalWrite(0, HIGH); // 初始化blinker Blinker.begin(auth, ssid, pswd); //按键后执行button1_callback函数 Button1.attach(button1_callback); } void loop() { ...
简单来说就是通用输入输出端口,英文全称:General Purpose Input Output。通俗地说,就是一些引脚,可以通过它们输出高低电平,或者通过它们读入引脚的状态是高电平或是低电平。GPIO是个比较重要的概念,用户可以通过GPIO口和硬件进行数据交互(如UART),控制硬件工作(如LED、蜂鸣器等),读取硬件的工作状态信号(如中断信号)等。
Espressif IoT Development Framework. Official development framework for Espressif SoCs. - esp-idf/components/driver/include/driver/spi_master.h at dd7e8b79552dab342e4ab3afdcf02a500688d17c · espressif/esp-idf
Process data (PD) are output from a data output device (6,8), esp. a printer, using a data output control module (4) between the data output device and a central processor (2). The control module monitors the operational status (BZ) of the data output devices and selects whichever on...