A quick Nokia 5110 LCD test using software SPI and the Adafruit PCD8544 library.
I've been having SPI conflicts with other libraries I've used for controlling the Nokia 5110 LCD, so time to pull out the big guns - the wonderful Adafruit library set which includes a PCD8544 module.
This is a test of the software SPI configuration, which means we steer clear of the hardware SPI pins (10-13 on an Arduino Uno).
Here's the mapping from the terminology used by my particular 5110 module and pins on an Arduino Uno.
| Pin | Usage | Arduino Uno Pin |
|---|---|---|
| RST | reset | 7 |
| CE/SCE/SS | chip enable | 6 |
| DC/CSN | data/command select | 5 |
| DIN | data in | 8 SPI MOSI |
| CLK | clock | 9 SPI SCK |
| VCC | power | 5V |
| BL | Backlight on when GND | n/c |
| GND | Ground | GND |
- Adafruit-PCD8544 Library - GitHub
- LEAP#365 AdafruitHardwareSPI - same project using hardware SPI
- ..as mentioned on my blog