Hallo,
verwende den Beispielcode aus folgendem Link:
http://basteln-mit-avr.de/Download/atmega644_DOGS102.zip
Folgende Parameter habe ich schon angepaßt:
- Makefile
1 | LCD = 0
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2 |
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3 | # MCU name
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4 | MCU = atmega32
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5 |
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6 |
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7 | # Processor frequency.
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8 | # This will define a symbol, F_CPU, in all source code files equal to the
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9 | # processor frequency. You can then use this symbol in your source code to
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10 | # calculate timings. Do NOT tack on a 'UL' at the end, this will be done
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11 | # automatically to create a 32-bit value in your source code.
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12 | # Typical values are:
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13 | # F_CPU = 1000000
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14 | # F_CPU = 1843200
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15 | # F_CPU = 2000000
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16 | # F_CPU = 3686400
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17 | # F_CPU = 2000000
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18 | # F_CPU = 7372800
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19 | F_CPU = 8000000
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- spi.c
1 | #include "tools.h"
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2 |
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3 |
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4 | //*----------------------------------------------------------------------------
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5 | // SPI-Bus initialisieren
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6 | //*----------------------------------------------------------------------------
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7 | #define LCD_A0 0 // PB0 (PIN1) = Display A0 -> PIN 38
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8 | #define LCD_RST 3 // PB1 (PIN2) = Display Reset -> PIN 39
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9 | #define LCD_CS 1 // PB4 (PIN5) = Select -> PIN 40
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10 | #define SPI_MOSI 5 // PB5 (PIN6) = SPI MOSI -> PIN 36
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11 | #define SPI_MISO 6 // PB6 (PIN7) = SPI MISO ->
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12 | #define SPI_SCK 7 // PB7 (PIN8) = SPI SCK -> PIN 37
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13 |
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14 | void SPI_PORT_Init(void)
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15 | {
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16 | // === PORT-B CONFIG ===
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17 |
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18 | DDRB = (1 << LCD_RST) | (1 << LCD_A0) | (1 << SPI_MOSI) | (1 << SPI_SCK) | (1 << LCD_CS);
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19 |
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20 |
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21 | PORTB &=~(1<<SPI_MISO);
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22 |
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23 | PORTB = (1<<SPI_MISO);
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- dogm-graphic.h
1 | //*----------------------------------------------------------------------------
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2 | // PORT - DEFINITIONEN
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3 | //*----------------------------------------------------------------------------
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4 | // == PORT C ==
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5 | #define LCD_A0 0 // PC1 (Pin 16) = Display A0 -> PIN 38
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6 | #define LCD_RST 3 // PC2 (Pin 17) = Display Reset -> PIN 39
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7 | #define LCD_CS 1 // PC4 (Pin 19) = Display Chip-Select -> PIN 40
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8 | #define SPI_MOSI 5 // PC5 (Pin 20) = SPI MOSI -> PIN 36
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9 | #define SPI_MISO 6 // PC6 (Pin 21) = SPI MISO -> leer
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10 | #define SPI_SCK 7 // PC7 (Pin 22) = SPI SCK -> PIN 37
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11 |
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12 |
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13 |
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14 | //*----------------------------------------------------------------------------
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15 | #define MEM_FLASH 0
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16 | #define MEM_RAM 1
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17 | #define MEM_EEPROM 2
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18 | //*----------------------------------------------------------------------------
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19 |
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20 |
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21 |
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22 |
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23 |
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24 | /*****************************************************************************
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25 | * BEGIN CONFIG BLOCK
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26 | *****************************************************************************/
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27 | //Select the display type: DOGS102: 102, DOGM128/DOGL128: 128, DOGM132: 132
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28 | #define DISPLAY_TYPE 102
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29 |
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30 | //Should chip select (CS) be used?
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31 | #define LCD_USE_CHIPSELECT 1
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32 | //Use Backlight? (0: no backlight, 1: backlight (on when pin is high), 2: backlight (on when pin is low))
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33 | #define LCD_USE_BACKLIGHT 0
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34 |
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35 | #define PORT_A0 PORTB
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36 | #define DDR_A0 DDRB
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37 | #define PIN_A0 0
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38 |
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39 | //Reset Port
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40 | #define PORT_RST PORTB
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41 | #define DDR_RST DDRB
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42 | #define PIN_RST 3
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43 |
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44 | //Backlight Port
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45 | #if LCD_USE_BACKLIGHT != 0
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46 | #define PORT_LED PORB
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47 | #define DDR_LED DDRB
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48 | #define PIN_LED 0
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49 | #endif
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50 |
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51 | //Chip select
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52 | #if LCD_USE_CHIPSELECT == 1
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53 | #define PORT_CS PORTB
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54 | #define DDR_CS DDRB
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55 | #define PIN_CS 1
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56 | #endif
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Das DOGS102 ist wie folgt an dem Atmega angeschlossen:
Display: Atmega32
SDA/SI ----->PB5 MOSI
SCK/SCL ---->PB7 SCK
CD/A0 ---->PB0
CSO/CS ----->PB1
Reset/RST -->PB3
Was könnte die Ursache sein, dass auf dem Display nichts angezeigt wird?
Gru0
Rik
