GitHub

Interrupt trigger or digitalRead resets ESP8266 after deepSleep()

After compiling and uploading a sketch, a digitalRead of a pin or an interrupt on a pin will do what it is supposed to. After a deepSleep(), the same event will reset the ESP8266. This example was ...
note

Seeeduino XIAOのdigitalReadを高速化する

Seeeduino XIAOのdigitalReadを高速化したいので、レジスタから読み出すように変更すると3倍ほど早くなった。シングルサイクルIOを使用すると5倍ほどはやくなった。 Arduino DIO高速化に関する記事は探すといっぱい出てきて正規？のArduinoではdigitalReadの代わりにPINx ...
GitHub

digitalRead() pull-down not working

Hi, I have noticed a serious issue on digitalRead () on any pin. I have a system with a 47k pull-down resistor, and a switch that pull the pin high. However, I noticed that if I don't run the ...
LinkedIn

Digital input and output pins. Part 2: behind digitalRead()

In the previous lesson, we looked at how to use a pin as a digital Output using DDRX and PORTX registers. In this lesson we shall look at how to use a pin as an INPUT and we shall use the push button ...