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16 16点阵显示汉字原理及显示程序

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标签: 1616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 <ioavr.h> #include <inavr.h> #include "dotled.h" #endif //-----

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