16 16点阵显示汉字原理及显示程序

16 16点阵显示汉字原理及显示程序

#include "config.h"

#define                DOTLED_LINE_PORT        PORTB

#define                DOTLED_LINE_DDR                DDRB

#define                DOTLED_LINE_PIN                PINB

#define                DOTLED_LINE_SCKT        PB1

#define                DOTLED_LINE_SCKH        PB5

#define                DOTLED_LINE_SDA                PB3

#define                DOTLED_ROW_PORT                PORTC

#define                DOTLED_ROW_DDR                DDRC

#define                DOTLED_ROW_PIN                PINC

#define                DOTLED_ROW_A0                PC0

#define                DOTLED_ROW_A1                PC1

#define                DOTLED_ROW_A2                PC2

#define                DOTLED_ROW_A3                PC3

#define                DOTLED_ROW_E                PC4

uint8 font[] = {

/*--  调入了一幅图像：这是您新建的图像  --*/

/*--  宽度x高度=16x16  --*/

0x00,0x00,0x00,0x00,0x08,0x38,0x18,0x44,0x08,0x44,0x08,0x04,0x08,0x08,0x08,0x10,

0x08,0x20,0x08,0x40,0x08,0x40,0x08,0x40,0x3E,0x7C,0x00,0x00,0x00,0x00,0x00,0x00

};

static void TransmitByte(uint8 byte);

static void SelectRow(uint8 row);

static void FlipLatchLine(void);

static void TransmitByte(uint8 byte)

{

        uint8 i;

        for(i = 0 ; i < 8 ; i ++)

        {

                if(byte & (1 << i))

                {

                        DOTLED_LINE_PORT |= _BV(DOTLED_LINE_SDA);

                }

                else

                {

                        DOTLED_LINE_PORT &= ~_BV(DOTLED_LINE_SDA);

                }

                //__delay_cycles(100);

                DOTLED_LINE_PORT |= _BV(DOTLED_LINE_SCKH);

                //__delay_cycles(100);

                DOTLED_LINE_PORT &= ~_BV(DOTLED_LINE_SCKH);

                //__delay_cycles(100);

        }

}

static void SelectRow(uint8 row)

{

          //row -= 1;

        row |= DOTLED_ROW_PIN & 0xe0;

        DOTLED_ROW_PORT = row;

}

static void FlipLatchLine(void)

{

        DOTLED_LINE_PORT |= _BV(DOTLED_LINE_SCKT);

        DOTLED_LINE_PORT &= ~_BV(DOTLED_LINE_SCKT);

}

void InitDotLedPort(void)

{

        DOTLED_LINE_PORT &= ~(_BV(DOTLED_LINE_SCKT) | _BV(DOTLED_LINE_SCKH));

        DOTLED_LINE_PORT |= _BV(DOTLED_LINE_SDA);

        DOTLED_LINE_DDR |= _BV(DOTLED_LINE_SCKT) | _BV(DOTLED_LINE_SCKH) | _BV(DOTLED_LINE_SDA);

        DOTLED_ROW_PORT |= 0x1f;

        DOTLED_ROW_PORT &= 0xf0;

        DOTLED_ROW_DDR |= 0x1f;

}

void EnableRow(boolean IsEnable)

{

        if(IsEnable)

        {

                DOTLED_ROW_PORT &= ~_BV(DOTLED_ROW_E);

        }

        else

        {

                DOTLED_ROW_PORT |= _BV(DOTLED_ROW_E);

        }

}

void PrintDotLed(uint8 * buffer)

{

        uint8 i , tmp;

        for(i = 0 ; i < 16 ; i ++)

        {

                tmp = *buffer ++;

                TransmitByte(~tmp);

                tmp = *buffer ++;

                TransmitByte(~tmp);

                SelectRow(i);

                FlipLatchLine();

        }

}

void main(void)

{

        InitDotLedPort();

        EnableRow(TRUE);

        while(1)

        {

                PrintDotLed(font);

                __delay_cycles(5000);

        }

}

//----------------------------------------------------

config.h文件

#ifndef        _CONFIG_H

#define        _CONFIG_H

//#define                GCCAVR

#define                CPU_CYCLES        7372800L

#ifndef                GCCAVR

#define                _BV(bit)        (1 << (bit))

#endif

#define                MSB                0x80

#define                LSB                0x01

#define                FALSE                0

#define                TRUE                1

typedef                unsigned char        uint8;

typedef                unsigned int        uint16;

typedef                unsigned long        uint32;

typedef                unsigned char        boolean;

#include

#include

#include "dotled.h"

#endif

//-----