| Nokia 3310 LCD Driver |
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The following circuits show the required connections to use Nokia 3310 and 5110 LCD's. The serial communication requires 5 pins: CLK, Data, Data/Command Select, Chip Select and Reset. A 4.7uF capacitor is required on the Vout which is used by the LCD driver in its charge pump.  Nokia LCD Schematics
Here is the pinout for the Nokia 3310 LCD.  Nokia 3310 Pinout The following code was written in WinAVR as a driver for this LCD. This code does not require any specific pins, only requiring 5 IO lines on your microcontroller. Change the header file definitions for your IO pin configuration. Download example project with makefile for WinAVR Download schematic and library for protell 99SE /* ** lcd.c ** ** LCD 3310 driver ** Unbuffered version - very small memory footprint ** Target: ATMEGA128 :: AVR-GCC ** ** Written by Tony Myatt - 2007 ** Quantum Torque - www.quantumtorque.com */ #include <stdio.h> #include <avr/io.h> #include <avr/pgmspace.h> #include <avr/interrupt.h> #include <util/delay.h> #include "lcd.h" /* delay macro function */ #define lcd_delay() for(int i=-32000;i<32000;i++) /* Command type sent to the lcd */ typedef enum { LCD_CMD = 0, LCD_DATA = 1 } LcdCmdData; /* Function prototypes */ void lcd_base_addr(unsigned int addr); void lcd_send(unsigned char data, LcdCmdData cd); /* The lcd cursor position */ int lcdCacheIdx; /* Alphabet lookup */ unsigned char PROGMEM font5x7 [][5] = { { 0x00, 0x00, 0x00, 0x00, 0x00 }, // sp { 0x00, 0x00, 0x2f, 0x00, 0x00 }, // ! { 0x00, 0x07, 0x00, 0x07, 0x00 }, // " { 0x14, 0x7f, 0x14, 0x7f, 0x14 }, // # { 0x24, 0x2a, 0x7f, 0x2a, 0x12 }, // $ { 0x32, 0x34, 0x08, 0x16, 0x26 }, // % { 0x36, 0x49, 0x55, 0x22, 0x50 }, // & { 0x00, 0x05, 0x03, 0x00, 0x00 }, // ' { 0x00, 0x1c, 0x22, 0x41, 0x00 }, // ( { 0x00, 0x41, 0x22, 0x1c, 0x00 }, // ) { 0x14, 0x08, 0x3E, 0x08, 0x14 }, // * { 0x08, 0x08, 0x3E, 0x08, 0x08 }, // + { 0x00, 0x00, 0x50, 0x30, 0x00 }, // , { 0x10, 0x10, 0x10, 0x10, 0x10 }, // - { 0x00, 0x60, 0x60, 0x00, 0x00 }, // . { 0x20, 0x10, 0x08, 0x04, 0x02 }, // / { 0x3E, 0x51, 0x49, 0x45, 0x3E }, // 0 { 0x00, 0x42, 0x7F, 0x40, 0x00 }, // 1 { 0x42, 0x61, 0x51, 0x49, 0x46 }, // 2 { 0x21, 0x41, 0x45, 0x4B, 0x31 }, // 3 { 0x18, 0x14, 0x12, 0x7F, 0x10 }, // 4 { 0x27, 0x45, 0x45, 0x45, 0x39 }, // 5 { 0x3C, 0x4A, 0x49, 0x49, 0x30 }, // 6 { 0x01, 0x71, 0x09, 0x05, 0x03 }, // 7 { 0x36, 0x49, 0x49, 0x49, 0x36 }, // 8 { 0x06, 0x49, 0x49, 0x29, 0x1E }, // 9 { 0x00, 0x36, 0x36, 0x00, 0x00 }, // : { 0x00, 0x56, 0x36, 0x00, 0x00 }, // ; { 0x08, 0x14, 0x22, 0x41, 0x00 }, // < { 0x14, 0x14, 0x14, 0x14, 0x14 }, // = { 0x00, 0x41, 0x22, 0x14, 0x08 }, // > { 0x02, 0x01, 0x51, 0x09, 0x06 }, // ? { 0x32, 0x49, 0x59, 0x51, 0x3E }, // @ { 0x7E, 0x11, 0x11, 0x11, 0x7E }, // A { 0x7F, 0x49, 0x49, 0x49, 0x36 }, // B { 0x3E, 0x41, 0x41, 0x41, 0x22 }, // C { 0x7F, 0x41, 0x41, 0x22, 0x1C }, // D { 0x7F, 0x49, 0x49, 0x49, 0x41 }, // E { 0x7F, 0x09, 0x09, 0x09, 0x01 }, // F { 0x3E, 0x41, 0x49, 0x49, 0x7A }, // G { 0x7F, 0x08, 0x08, 0x08, 0x7F }, // H { 0x00, 0x41, 0x7F, 0x41, 0x00 }, // I { 0x20, 0x40, 0x41, 0x3F, 0x01 }, // J { 0x7F, 0x08, 0x14, 0x22, 0x41 }, // K { 0x7F, 0x40, 0x40, 0x40, 0x40 }, // L { 0x7F, 0x02, 0x0C, 0x02, 0x7F }, // M { 0x7F, 0x04, 0x08, 0x10, 0x7F }, // N { 0x3E, 0x41, 0x41, 0x41, 0x3E }, // O { 0x7F, 0x09, 0x09, 0x09, 0x06 }, // P { 0x3E, 0x41, 0x51, 0x21, 0x5E }, // Q { 0x7F, 0x09, 0x19, 0x29, 0x46 }, // R { 0x46, 0x49, 0x49, 0x49, 0x31 }, // S { 0x01, 0x01, 0x7F, 0x01, 0x01 }, // T { 0x3F, 0x40, 0x40, 0x40, 0x3F }, // U { 0x1F, 0x20, 0x40, 0x20, 0x1F }, // V { 0x3F, 0x40, 0x38, 0x40, 0x3F }, // W { 0x63, 0x14, 0x08, 0x14, 0x63 }, // X { 0x07, 0x08, 0x70, 0x08, 0x07 }, // Y { 0x61, 0x51, 0x49, 0x45, 0x43 }, // Z { 0x00, 0x7F, 0x41, 0x41, 0x00 }, // [ { 0x55, 0x2A, 0x55, 0x2A, 0x55 }, // 55 { 0x00, 0x41, 0x41, 0x7F, 0x00 }, // ] { 0x04, 0x02, 0x01, 0x02, 0x04 }, // ^ { 0x40, 0x40, 0x40, 0x40, 0x40 }, // _ { 0x00, 0x01, 0x02, 0x04, 0x00 }, // ' { 0x20, 0x54, 0x54, 0x54, 0x78 }, // a { 0x7F, 0x48, 0x44, 0x44, 0x38 }, // b { 0x38, 0x44, 0x44, 0x44, 0x20 }, // c { 0x38, 0x44, 0x44, 0x48, 0x7F }, // d { 0x38, 0x54, 0x54, 0x54, 0x18 }, // e { 0x08, 0x7E, 0x09, 0x01, 0x02 }, // f { 0x0C, 0x52, 0x52, 0x52, 0x3E }, // g { 0x7F, 0x08, 0x04, 0x04, 0x78 }, // h { 0x00, 0x44, 0x7D, 0x40, 0x00 }, // i { 0x20, 0x40, 0x44, 0x3D, 0x00 }, // j { 0x7F, 0x10, 0x28, 0x44, 0x00 }, // k { 0x00, 0x41, 0x7F, 0x40, 0x00 }, // l { 0x7C, 0x04, 0x18, 0x04, 0x78 }, // m { 0x7C, 0x08, 0x04, 0x04, 0x78 }, // n { 0x38, 0x44, 0x44, 0x44, 0x38 }, // o { 0x7C, 0x14, 0x14, 0x14, 0x08 }, // p { 0x08, 0x14, 0x14, 0x18, 0x7C }, // q { 0x7C, 0x08, 0x04, 0x04, 0x08 }, // r { 0x48, 0x54, 0x54, 0x54, 0x20 }, // s { 0x04, 0x3F, 0x44, 0x40, 0x20 }, // t { 0x3C, 0x40, 0x40, 0x20, 0x7C }, // u { 0x1C, 0x20, 0x40, 0x20, 0x1C }, // v { 0x3C, 0x40, 0x30, 0x40, 0x3C }, // w { 0x44, 0x28, 0x10, 0x28, 0x44 }, // x { 0x0C, 0x50, 0x50, 0x50, 0x3C }, // y { 0x44, 0x64, 0x54, 0x4C, 0x44 }, // z { 0x00, 0x7F, 0x3E, 0x1C, 0x08 }, // > Filled { 0x08, 0x1C, 0x3E, 0x7F, 0x00 }, // < Filled { 0x08, 0x7C, 0x7E, 0x7C, 0x08 }, // Arrow up { 0x10, 0x3E, 0x7E, 0x3E, 0x10 }, // Arrow down { 0x3E, 0x3E, 0x3E, 0x3E, 0x3E }, // Stop { 0x00, 0x7F, 0x3E, 0x1C, 0x08 } // Play }; /* Performs IO & LCD controller initialization */ void lcd_init(void) { // Pull-up on reset pin LCD_PORT |= LCD_RST_PIN; // Set output bits on lcd port LCD_DDR |= LCD_RST_PIN | LCD_CE_PIN | LCD_DC_PIN | LCD_DATA_PIN | LCD_CLK_PIN; // Wait after VCC high for reset (max 30ms) _delay_ms(15); // Toggle display reset pin LCD_PORT &= ~LCD_RST_PIN; lcd_delay(); LCD_PORT |= LCD_RST_PIN; // Disable LCD controller LCD_PORT |= LCD_CE_PIN; lcd_send(0x21, LCD_CMD); // LCD Extended Commands lcd_send(0xC8, LCD_CMD); // Set LCD Vop(Contrast) lcd_send(0x06, LCD_CMD); // Set Temp coefficent lcd_send(0x13, LCD_CMD); // LCD bias mode 1:48 lcd_send(0x20, LCD_CMD); // Standard Commands, Horizontal addressing lcd_send(0x0C, LCD_CMD); // LCD in normal mode // Clear lcd lcd_clear(); // For using printf fdevopen(lcd_chr, 0); } /* Set display contrast. Note: No change is visible at ambient temperature */ void lcd_contrast(unsigned char contrast) { lcd_send(0x21, LCD_CMD); // LCD Extended Commands lcd_send(0x80 | contrast, LCD_CMD); // Set LCD Vop(Contrast) lcd_send(0x20, LCD_CMD); // LCD std cmds, hori addr mode } /* Clears the display */ void lcd_clear(void) { lcdCacheIdx = 0; lcd_base_addr(lcdCacheIdx); // Set the entire cache to zero and write 0s to lcd for(int i=0;i<LCD_CACHE_SIZE;i++) { lcd_send(0, LCD_DATA); } } /* Clears an area on a line */ void lcd_clear_area(unsigned char line, unsigned char startX, unsigned char endX) { // Start and end positions of line int start = (line-1)*84+(startX-1); int end = (line-1)*84+(endX-1); lcd_base_addr(start); // Clear all data in range from cache for(unsigned int i=start;i<end;i++) { lcd_send(0, LCD_DATA); } } /* Clears an entire text block. (rows of 8 pixels on the lcd) */ void lcd_clear_line(unsigned char line) { lcd_clear_area(line, 1, LCD_X_RES); } /* Sets cursor location to xy location corresponding to basic font size */ void lcd_goto_xy(unsigned char x, unsigned char y) { lcdCacheIdx = (x-1)*6 + (y-1)*84; } /* Sets cursor location to exact xy pixel location on the lcd */ void lcd_goto_xy_exact(unsigned char x, unsigned char y) { lcdCacheIdx = (x-1) + (y-1)*84; } /* Displays a character at current cursor location */ void lcd_chr(char chr) { lcd_base_addr(lcdCacheIdx); // 5 pixel wide characters and add space for(unsigned char i=0;i<5;i++) { lcd_send(pgm_read_byte(&font5x7[chr-32][i]) << 1, LCD_DATA); } lcd_send(0, LCD_DATA); lcdCacheIdx += 6; } /* Displays string at current cursor location and increment cursor location */ void lcd_str(char *str) { while(*str) { lcd_chr(*str++); } } // Set the base address of the lcd void lcd_base_addr(unsigned int addr) { lcd_send(0x80 |(addr % LCD_X_RES), LCD_CMD); lcd_send(0x40 |(addr / LCD_X_RES), LCD_CMD); } /* Sends data to display controller */ void lcd_send(unsigned char data, LcdCmdData cd) { // Data/DC are outputs for the lcd (all low) LCD_DDR |= LCD_DATA_PIN | LCD_DC_PIN; // Enable display controller (active low) LCD_PORT &= ~LCD_CE_PIN; // Either command or data if(cd == LCD_DATA) { LCD_PORT |= LCD_DC_PIN; } else { LCD_PORT &= ~LCD_DC_PIN; } for(unsigned char i=0;i<8;i++) { // Set the DATA pin value if((data>>(7-i)) & 0x01) { LCD_PORT |= LCD_DATA_PIN; } else { LCD_PORT &= ~LCD_DATA_PIN; } // Toggle the clock LCD_PORT |= LCD_CLK_PIN; LCD_PORT &= ~LCD_CLK_PIN; } // Disable display controller LCD_PORT |= LCD_CE_PIN; // Data/DC can be used as button inputs when not sending to LCD (/w pullups) LCD_DDR &= ~(LCD_DATA_PIN | LCD_DC_PIN); LCD_PORT |= LCD_DATA_PIN | LCD_DC_PIN; } |