基于单片机的GPS定位系统设计(7)

洛阳理工学院毕业设计（论文）

void LCD_Close_Cursor(void);

void LCD_Open_hilight(unsigned char Hilight_mode); void LCD_Close_hilight(unsigned char Hilight_mode); void LCD_BK_Light_SET(unsigned char Light_MODE); void Init_LCD(void); void Init_GPS_module(void);

unsigned char Cal_gas_data_to_disp(void); void rx_gps_data(unsigned char com_rx_byte); void delay_time(unsigned short t) {

unsigned short n,m; for(n=0;n

for(m=0;m<1000;m++) {;} } }

void main(void) {

unsigned char i; Init_GPS_module();

Init_LCD(); EA=1; while(1) {

LCD_BK_Light_SET(TRUE); Set_LCD_BK(1); LCD_Open_Cursor(1); LCD_Send_CMD_END(); delay_time(500); LCD_CLR_ALL(TRUE); if(gps_data_ok_flag) {

i=Cal_gas_data_to_disp();

27

洛阳理工学院毕业设计（论文）

if(i==1) {

LCD_print_char(0, 0, \该地时间为~\

LCD_Open_Cursor(0);

delay_time(200);

LCD_print_Curr_char(gps_time1,TRUE);

LCD_Open_Cursor(1); LCD_Open_Cursor(0); delay_time(200); LCD_Open_Cursor(0); LCD_Open_Cursor(0);

LCD_print_char(1, 0, \该地经度为~\ LCD_print_Curr_char(temp_bu , TRUE);

LCD_print_char(3, 0, \该地纬度为~\ LCD_print_Curr_char(temp_buf ,TRUE); } }

delay_time(20000); } }

void Delay_3US(void) {

unsigned char t; for(t=0;t<10;t++) //---- { _nop_(); } }

#ifdef HARD_SPI

unsigned char TR_LCD_SPI_BYTE(unsigned char dat) {

while(!LCD_SH); LCD_CS=0; SPDAT=dat;

28

洛阳理工学院毕业设计（论文）

while(!(SPSTAT&0x80)); SPSTAT=0xc0; LCD_CS=1; return SPDAT; } #else

unsigned char TR_LCD_SPI_BYTE(unsigned char dat) {

unsigned char temp_data,i; while(!LCD_SH); LCD_SCLK=0; temp_data=dat; LCD_CS=0; MOSI=0; for(i=0;i<8;i++) {

if(temp_data&0x80) LCD_MOSI=1; else

LCD_MOSI=0; temp_data<<=1; LCD_SCLK=1; if(LCD_MISO) temp_data|=0x01; //_nop_(); LCD_SCLK=0; //_nop_(); } LCD_CS=1; return temp_data; } #endif

void Change_lcd_mode(unsigned char LCD_mode) {

29

洛阳理工学院毕业设计（论文）

unsigned char temp_data; if(LCD_mode) {

if(LCD_mode<=LCD_FD_DRAW_mode) {

temp_data=0x80+LCD_mode;

TR_LCD_SPI_BYTE(LCD_CMD_HEAD); TR_LCD_SPI_BYTE(temp_data); //LCD_Send_CMD_END();

} } }

void LCD_Send_CMD_END(void) {

TR_LCD_SPI_BYTE(LCD_CMD_END); Delay_3US(); Delay_3US(); }

void SET_LCD_POS(unsigned char mode ,Y,X) {

unsigned char temp_data;

TR_LCD_SPI_BYTE(LCD_CMD_HEAD); if(mode) {

temp_data=Y; temp_data&=0x0f;

temp_data|=LCD_SET_NEW_POS_WORD; } else

temp_data=LCD_SET_DEF_POS_WORD; TR_LCD_SPI_BYTE(temp_data); if(mode)

TR_LCD_SPI_BYTE(X); }

30

洛阳理工学院毕业设计（论文）

void LCD_print_char(unsigned char Y,X,unsigned *char_ptr,unsigned char End_flag)

{

SET_LCD_POS(TRUE, Y, X); Send_LCD_string(char_ptr); if(End_flag)

LCD_Send_CMD_END(); }

void LCD_print_Curr_char(unsigned char *char_ptr,unsigned End_flag)

{

SET_LCD_POS(FALSE, 0, 0); Send_LCD_string(char_ptr); if(End_flag)

LCD_Send_CMD_END(); }

void Send_LCD_string(unsigned char *char_ptr) {

while(*char_ptr!='~') {

TR_LCD_SPI_BYTE(*char_ptr); char_ptr++; } }

void Set_LCD_BK(unsigned char BKL_dat) {

TR_LCD_SPI_BYTE(LCD_CMD_HEAD); TR_LCD_SPI_BYTE(LCD_SET_BK_LCD_CMD); TR_LCD_SPI_BYTE(BKL_dat); }

void LCD_CLR_ALL(unsigned char At_once ) {

TR_LCD_SPI_BYTE(LCD_CMD_HEAD); TR_LCD_SPI_BYTE(LCD_CLR_CMD);

31

char

char