Nokia Screen

Nokia Screen Component Documentation

Overview

The Nokia Screen is a programmable LCD display component designed for use in various Internet of Things (IoT) projects. It features a 84x48 pixel monochrome display, making it ideal for displaying simple graphics, text, and numerical data. This component is compatible with various microcontrollers and development boards.

Pinout

The Nokia Screen component has a 7-pin interface:

| Pin | Function |
| --- | --- |
| VCC | Power supply (3.3V or 5V) |
| GND | Ground |
| SCL | Serial Clock (I2C) |
| SDA | Serial Data (I2C) |
| RST | Reset |
| CS | Chip Select (SPI) |
| backlight | Backlight control |

Communication Protocols

The Nokia Screen supports both I2C and SPI communication protocols. The default protocol is I2C.

Example Code

### Example 1: Displaying Text using I2C (Arduino)

This example demonstrates how to display a simple text message on the Nokia Screen using an Arduino board and the I2C protocol.
```c++
#include <Wire.h>

#define Nokia_Screen_I2C_ADDRESS 0x3C

void setup() {
  Wire.begin();
  Nokia_Screen_Init(); // Initialize the Nokia Screen
}

void loop() {
  Nokia_Screen_Clear(); // Clear the screen
  Nokia_Screen_SetCursor(0, 0); // Set cursor to top-left corner
  Nokia_Screen_Print("Hello, World!"); // Print text
  delay(1000);
}

void Nokia_Screen_Init() {
  Wire.beginTransmission(Nokia_Screen_I2C_ADDRESS);
  Wire.write(0x00); // Command to initialize the screen
  Wire.endTransmission();
}

void Nokia_Screen_Clear() {
  Wire.beginTransmission(Nokia_Screen_I2C_ADDRESS);
  Wire.write(0x01); // Command to clear the screen
  Wire.endTransmission();
}

void Nokia_Screen_SetCursor(uint8_t row, uint8_t col) {
  Wire.beginTransmission(Nokia_Screen_I2C_ADDRESS);
  Wire.write(0x02); // Command to set cursor
  Wire.write(row); // Row number
  Wire.write(col); // Column number
  Wire.endTransmission();
}

void Nokia_Screen_Print(char text) {
  Wire.beginTransmission(Nokia_Screen_I2C_ADDRESS);
  Wire.write(0x03); // Command to print text
  Wire.write(text); // Text to be printed
  Wire.endTransmission();
}
```
### Example 2: Displaying Graphics using SPI (Raspberry Pi)

This example demonstrates how to display a simple graphic image on the Nokia Screen using a Raspberry Pi and the SPI protocol.
```python
import spidev

SpiDev = spidev.SpiDev()

SpiDev.open(0, 0)  # Open SPI channel 0, chip select 0

def Nokia_Screen_Init():
    SpiDev.xfer([0x00, 0x00])  # Initialize the screen

def Nokia_Screen_Clear():
    SpiDev.xfer([0x01, 0x00])  # Clear the screen

def Nokia_Screen_SetPixel(x, y, value):
    SpiDev.xfer([0x02, x, y, value])  # Set pixel at (x, y) to value

def Nokia_Screen_DrawImage(image_data):
    SpiDev.xfer([0x03] + image_data)  # Draw image from image_data

image_data = [  # Simple 8x8 image data
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
]

Nokia_Screen_Init()
Nokia_Screen_Clear()
Nokia_Screen_DrawImage(image_data)
```
Additional Resources

Datasheet: [Nokia Screen Datasheet](https://www.example.com/nokia_screen_datasheet.pdf)
 Tutorial: [Getting Started with Nokia Screen and Arduino](https://www.example.com/nokia_screen_arduino_tutorial)
 Library: [Nokia Screen Arduino Library](https://www.example.com/nokia_screen_arduino_library.zip)