/trunk/code/lib/src/libdragonfly/lcd.c - Diff - Colony - Robotics Club

Revision 241

Updated libdragonfly documentation.

     /*
     /**
      * Copyright (c) 2007 Colony Project
+     *
      * Permission is hereby granted, free of charge, to any person
      * obtaining a copy of this software and associated documentation
      * files (the "Software"), to deal in the Software without
      * restriction, including without limitation the rights to use,
      * copy, modify, merge, publish, distribute, sublicense, and/or sell
      * copies of the Software, and to permit persons to whom the
      * Software is furnished to do so, subject to the following
      * conditions:
+     *
      * The above copyright notice and this permission notice shall be
      * included in all copies or substantial portions of the Software.
+     *
      * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
      * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
      * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
      * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
      * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
      * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
      * OTHER DEALINGS IN THE SOFTWARE.
      **/
     lcd-ar2.c - implementation for lcd functions
     Author: CMU Robotics Club, Colony Project
     This uses SPI.
     lcd_init MUST be called before anything can be used.
     */
     /**
      * @file lcd.c
      * @brief LCD
+     *
      * Implementation of functions for using the LCD.
+     *
      * @author Colony Project, CMU Robotics Club
      **/
     #include <avr/io.h>
     #include <lcd.h>
     #include <time.h>
     #define LCD_RS    PB4 // Command/Data
     #define LCD_RSTB  PE2 // reset line
     #define LCD_CS    PB0
     //////lcd defines
     //LCD defines
     #define RST _BV(4)  // pd4 (GPIO)
     #define SCE _BV(0)  // pb0 (~SS)
     #define D_C _BV(5)  // pd5 (GPIO?)
-...
     #define LCDRESETPORT PORTD
     #define LCDRESETDDR DDRD
     // Internal Function Prototypes
     // inialize OLED and SPI
     void OLED_init(void);
     // reset Controller
     void Reset_SSD1339(void);
     // write command or data
     void write_c(unsigned char out_command);
     void write_d(unsigned char out_data);
     // these write data to the OLED on 8 bit data bus,  depends on MCU
     void LCD_out(unsigned char cmd);
     // these functions set / clear pins for OLED control lines.  they accecpt a 0 or 1
     void DC(char stat);
     void RES(char stat);
     void CS(char stat);
     void lcd_putbyte(unsigned char b);
     void crazycircle (void) {
     /*  int i;
       // draw 100 random circles
       for(i = 0;i < 100;i++){
           write_c(0x86);    // draw circle command
           write_d(rand() % 130);
           write_d(rand() % 130);
           write_d(rand() % 64);
           write_d(rand());
           write_d(rand());
           write_d(rand());
           write_d(rand());
           delay_ms(10);
+      }
     */
+    }
     void OLEDtest (void) {
       //int   i = 0;
       // Initialize
       //Initialize();
       OLED_init();
       delay_ms(120);
       write_c(0x8e);    // clear window command
       write_d(0);
       write_d(0);
       write_d(130);
       write_d(130);
       delay_ms(100);
       write_c(0x92);    // fill enable command
       write_d(0x01);
       delay_ms(10);
       crazycircle();
     /*
       // write directly to ram,  this fills up bottom 1/3 of display with color pattern
       write_c(0x5c);
       for (i = 0; i < 2000; i++){
       write_c(0x5c);
        write_d(i);
        write_d(i);
        write_d(i);
+      }
       */
+    }
     /**********************************************************
                           Initialize
     **********************************************************/
     void OLED_init(void)
+    {
       // Setup SPI here
       SPCR = 0x5D; //  enable SPI, master, SPI mode 3
       DDRB |= 0x06; // enable MOSI and SCK as outputs
       LCD_out(0);
       DC(0);
       CS(0);
       Reset_SSD1339();
       write_c(0xa0); // Set Re-map / Color Depth
       write_d(0x34);//0xb4); // 262K 8bit R->G->B
       write_c(0xa1); // Set display start line
       write_d(0x00); // 00h start
       //write_c(0xa2); // Set display offset
       //write_d(0x80); // 80h start
       write_c(0xA6); // Normal display
       write_c(0xad); // Set Master Configuration
       write_d(0x8e); // DC-DC off & external VcomH voltage & external pre-charge voltage
       write_c(0xb0); // Power saving mode
       write_d(0x05);
       write_c(0xb1); // Set pre & dis_charge
       write_d(0x11); // pre=1h dis=1h
       write_c(0xb3); // clock & frequency
       write_d(0xf0); // clock=Divser+1 frequency=fh
       write_c(0xbb); // Set pre-charge voltage of color A B C
       write_d(0xff); // color A  was 1c
       write_d(0xff); // color B  was 1c
       write_d(0xff); // color C  was 1c
       write_c(0xbe); // Set VcomH
       write_d(0x1f); //
       write_c(0xc1); // Set contrast current for A B C
       write_d(0xCa); // Color A was AA
       write_d(0xD4); // Color B was B4
       write_d(0xF8); // Color C was C8
       write_c(0xc7); // Set master contrast
       write_d(0x0f); // no change
       write_c(0xca); // Duty
       write_d(0x7f); // 127+1
       write_c(0xaf); // Display on
+    }
     void Reset_SSD1339(void)
+    {
       RES(0);
       delay_ms(100);
       RES(1);
+    }
     void write_c(unsigned char out_command)
+    {
       DC(0);CS(0);
       //delay_ms(1);
       LCD_out(out_command);
      // delay_ms(1);
       DC(1);
       // potentially add NOP
       CS(1);
+    }
     void write_d(unsigned char out_data)
+    {
       DC(1);CS(0);
      // delay_ms(1);
       LCD_out(out_data);
      // delay_ms(1);
       DC(1);
       //potentially add NOP
       CS(1);
+    }
     // these functions set / clear pins for LCD control lines.  they accecpt a 0 or 1
     void DC(char stat)
+    {
     	DDRB |= _BV(LCD_RS);				// RS is P0.30, set to output
     	if (stat)
     		PORTB |= _BV(LCD_RS);
     	else
     		PORTB &= ~(_BV(LCD_RS));
+    }
     void RES(char stat)
+    {
     	DDRE |= _BV(LCD_RSTB);				// RSTB is P0.7, set to output
     	if (stat)
     		PORTE |= _BV(LCD_RSTB);
     	else
     		PORTE &= ~(_BV(LCD_RSTB));
+    }
     void CS(char stat)
+    {
     	DDRB |= _BV(LCD_CS);				// RSTB is P0.7, set to output
     	if (stat)
     		PORTB |= _BV(LCD_CS);
     	else
     		PORTB &= ~(_BV(LCD_CS));
+    }
     // send to the LCD
     void LCD_out(unsigned char cmd)
+    {
     	SPDR = cmd;
         // could also do this via interrupts
     	loop_until_bit_is_set(SPSR, SPIF);
+    }
     //**************************************Old shit below!*****************
     /*
     FontLookup - a lookup table for all characters
-...
     	delay_ms(100);
     	LCDRESETPORT |= RST;
         lcd_putbyte( 0x21 );  // LCD Extended Commands.
         lcd_putbyte( 0xC8 );  // Set LCD Vop (Contrast).
         lcd_putbyte( 0x06 );  // Set Temp coefficent.
         lcd_putbyte( 0x13 );  // LCD bias mode 1:48.
         lcd_putbyte( 0x20 );  // LCD Standard Commands, Horizontal addressing mode.
         lcd_putbyte( 0x0C );  // LCD in normal mode.
     	lcd_putbyte( 0x21 );  // LCD Extended Commands.
     	lcd_putbyte( 0xC8 );  // Set LCD Vop (Contrast).
     	lcd_putbyte( 0x06 );  // Set Temp coefficent.
     	lcd_putbyte( 0x13 );  // LCD bias mode 1:48.
     	lcd_putbyte( 0x20 );  // LCD Standard Commands, Horizontal addressing mode.
     	lcd_putbyte( 0x0C );  // LCD in normal mode.
     	LCDRESETPORT |= D_C;		//put it in init instead of main
-...
     void lcd_clear_screen( void ) {
     	int i;
     	for (i = 0; i < 504; i++)
     			lcd_putbyte(0x0);
     		lcd_putbyte(0x0);
     	lcd_gotoxy(0,0);
+    }
-...
     origin (0,0) is at top left corner of lcd screen
     */
     /**
      * Move the current cursor position to the one specified.
      * lcd_init must be called before this function may be used.
-...
      **/
     void lcd_gotoxy(int x, int y)
+    {
       LCDRESETPORT &= ~(D_C);
       lcd_putbyte(0x40 | (y & 0x07));
       lcd_putbyte(0x80 | (x & 0x7f));
       LCDRESETPORT |= D_C;
     	LCDRESETPORT &= ~(D_C);
     	lcd_putbyte(0x40 | (y & 0x07));
     	lcd_putbyte(0x80 | (x & 0x7f));
     	LCDRESETPORT |= D_C;
+    }
     /*
-...
     code adapted from Chris Efstathiou's code (hendrix@otenet.gr)
     */
     /**
      * Print an integer to the LCD screen.
      * lcd_init must be called before this function may be used.
-...
+     *
      * @see lcd_init
      **/
     void lcd_puti(int value ) {
     void lcd_puti(int value )
+    {
     	unsigned char lcd_data[6]={'0','0','0','0','0','0' }, position=sizeof(lcd_data), radix=10;
             /* convert int to ascii  */
-...
             /* start displaying the number */
             for(;position<=(sizeof(lcd_data)-1);position++)
+              {
                 lcd_putc(lcd_data[position]);
+              }
     		lcd_putc(lcd_data[position]);
     	return;
+    }

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Revision 241