20 lines
903 B
Markdown
20 lines
903 B
Markdown
Adafruit_LiquidCrystal hd44780 examples
|
|
========================================
|
|
|
|
The Adafruit_LiquidCrystal library must be installed in order to use these sketches.
|
|
|
|
#### The examples are broken up into various sub directories.
|
|
|
|
* `4bit`<br>
|
|
Contains example sketches that are for LCDs that are wired up directly to Arduino pins.
|
|
|
|
* `I2C`<br>
|
|
Contains example sketches that are for LCDs connected to an Adafruit #292 backpack when using the i2c MCP23008 i/o expander chip to control the LCD.
|
|
|
|
* `SPI`<br>
|
|
Contains example sketches that are for LCDs connected to an Adafruit #292 backpack when using the shift register to control the LCD.
|
|
|
|
Note: that while adafruit uses the term "SPI" the #292 backpack it is not using SPI.
|
|
It is mearly using a shift register.
|
|
Also, the Adafruit_liquidCrystal library is not using the SPI h/w but rather simply calling the s/w shiftout() function to do the transfer.
|