首先分析一下:ESP8266-01S上电时GPIO引脚会发生一次抖动,我们标记为抖动A;当代码初始化时把GPIO引脚初始化为输出时GPIO引脚会突然变为0,然后再通过代码把引脚输出置为1,又会发生一次抖动,我们标志为抖动B。 如果只有抖动A,就是你的电路只需要解决ESP8266-01S上电一瞬间的抖动A,这个电容容值选择10~100uF就可以;...
首先分析一下:ESP8266-01S上电时GPIO引脚会发生一次抖动,我们标记为抖动A;当代码初始化时把GPIO引脚初始化为输出时GPIO引脚会突然变为0,然后再通过代码把引脚输出置为1,又会发生一次抖动,我们标志为抖动B。 如果只有抖动A,就是你的电路只需要解决ESP8266-01S上电一瞬间的抖动A,这个电容容值选择10~100uF就可以;...
Most of the ESP8266 development boards have a built-in LED. This LED is usually connected to GPIO2. The LED works with inverted logic. Send a HIGH signal to turn it off, and a LOW signal to turn it on. RST Pin When the RST pin is pulled LOW, the ESP8266 resets. This is the ...
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(){ } 转载自: 《老宇哥带你玩转ESP32:02使用VSCode+PlatformIO搭建开发环境》 《老宇哥带你玩转ESP32:03 GPIO数字输入与数字输出》 《老宇哥带你玩转 ...
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GPIO9: pin is high at BOOT Pins HIGH at Boot There are certain pins that output a 3.3V signal when the ESP8266 boots. This may be problematic if you have relays or other peripherals connected to those GPIOs. The following GPIOs output a HIGH signal on boot: ...