Driving a Nokia 5110 LCD with the ATtiny85 Template Library

README.md

This gist provides sample code for using Nokia 5110 displays using the ATtiny85 template library. For a full description of code behind this please see this post on The Garage Lab website.

To use this sample code first clone the ATtiny85 template repository and then replace 'main.c' with the source provided here.

main.c

/*--------------------------------------------------------------------------*
* Main program
*---------------------------------------------------------------------------*
* 14-Apr-2014 ShaneG
*
* Template program for ATtiny85 C/asm projects.
*--------------------------------------------------------------------------*/
#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include <avr/pgmspace.h>
#include "softuart.h"
#include "utility.h"
#include "nokialcd.h"

// Forward declaration with 'noreturn' attribute
void main() __attribute__ ((noreturn));

const uint8_t IMAGE_TGL_LOGO[] PROGMEM = {
  0xeb, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80, 0xc0, 0xc0, 0xe0, 0x60, 0x60,
  0x30, 0x30, 0x38, 0x18, 0x18, 0x0c, 0x0c, 0x0e, 0x06, 0x06, 0x03, 0x03,
  0x03, 0x03, 0x06, 0x06, 0x0e, 0x0c, 0x1c, 0x18, 0x18, 0x30, 0x30, 0x60,
  0x60, 0xc0, 0xc0, 0xc0, 0x80, 0x80, 0x00, 0x00, 0x00, 0x06, 0x03, 0x03,
  0xff, 0xff, 0x01, 0x00, 0x00, 0x00, 0xf8, 0x08, 0x48, 0x48, 0x48, 0x48,
  0x48, 0x48, 0x48, 0x48, 0x48, 0x48, 0x48, 0x48, 0x48, 0x48, 0x48, 0x48,
  0x48, 0x48, 0x48, 0x48, 0x48, 0x48, 0x08, 0xf8, 0x00, 0x00, 0x00, 0x01,
  0xff, 0xff, 0x03, 0x03, 0x06, 0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00,
  0x00, 0x00, 0xff, 0x00, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92,
  0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92, 0x92,
  0x92, 0x92, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00,
  0x00, 0x40, 0xe0, 0xe0, 0xff, 0xff, 0xe0, 0xe0, 0xe0, 0xe0, 0xff, 0xe0,
  0xe4, 0xe4, 0xe4, 0xe4, 0xe4, 0xe4, 0xe4, 0xe4, 0xe4, 0xe4, 0xe4, 0xe4,
  0xe4, 0xe4, 0xe4, 0xe4, 0xe4, 0xe4, 0xe4, 0xe4, 0xe4, 0xe4, 0xe0, 0xff,
  0xe0, 0xe0, 0xe0, 0xe0, 0xff, 0xff, 0xe0, 0xe0, 0x40,
  };

/** Program entry point
 */
void main() {
  lcdInit();
  lcdClear(false);
  // Display the logo
  lcdImageP(0, 20, IMAGE_TGL_LOGO, false);
  lcdPrint(5, 0, "The Garage Lab", false);
  // Block forever
  while(true);
  }