PCF8574 Arduino library for PCF8574 - 8 channel I2C IO expander. Description Related to the PCF8575 16 channel IO expander libraryhttps://github.com/RobTillaart/PCF8575 This library gives easy control over the 8 pins of a PCF8574 and PCF8574A chip. These chips are identical in behaviour ...
// Function interrupt void keyPressedOnPCF8574(); // Set i2c address PCF8574 pcf8574(0x39, ARDUINO_UNO_INTERRUPT_PIN, keyPressedOnPCF8574); Remember you can't use Serial or Wire on an interrupt function. It's better to only set a variable to read on loop: void keyPressedOnPCF8574()...
If I were to send an I2C byte to this module with a value of 8 (that would be bit 3 set, with bits numbers 0 to 7), that would toggle the LCD backlight on. Sending a 0 would turn it off. That was the first thing I was able to do. Here is an Arduino sketch that will tog...
Latest commit Cannot retrieve latest commit at this time. History 59 Commits .github/workflows examples src LICENSE README.md keywords.txt library.properties Arduino Library for LiquidCrystal displays with I2C PCF8574 adapter A library for driving LiquidCrystal displays (LCD) by using the I2C bus and...