soska2007
Newbie level 1
hi ..
when i try to interface gps smk53 with pic 16f877a to display the latitude and longitude iget sooo many error
plz ineed help .......this is my final year project icant find anyone to help me
micro c program
with 4Mhz freq
when i try to interface gps smk53 with pic 16f877a to display the latitude and longitude iget sooo many error
plz ineed help .......this is my final year project icant find anyone to help me
micro c program
with 4Mhz freq
Code C - [expand] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 #define FREQ 12000000 #define baud 4800 #define spbrg_value (((FREQ/64)/baud)-1) #define rs LATA.F0 #define rw LATA.F1 #define en LATA.F2 #define lcdport LATB unsigned char rx_data(); void lcd_ini(); void lcdcmd(unsigned char); void lcddata(unsigned char); unsigned char longi_data[12]; unsigned char lati_data[12]; unsigned char data,value=0; unsigned int i=0,pos; void main() { TRISB=0; // Set Port B as output port LATB=0; TRISA=0; LATA=0; SPBRG=spbrg_value; // Fill SPBRG register to set the baud rate RCSTA.SPEN=1; // To activate serial port (Tx and Rx pins) RCSTA.CREN=1; // To enable continuous reception lcd_ini(); while(1) { data=rx_data(); // Check the string '$GPGGA,' if(data=='$') { data=rx_data(); if(data=='G') { data=rx_data(); if(data=='P'); { data=rx_data(); if(data=='G'); { data=rx_data(); if(data=='G') { data=rx_data(); if(data=='A') { data=rx_data(); if(data==',') { data=rx_data(); while(data!=',') data=rx_data(); for(i=0;data!='N';i++) data=rx_data(); lati_data[i]=data; // Store the Latitude data } data=rx_data(); if(data==',') { for(i=0;data!='E';i++) { data=rx_data(); longi_data[i]=data; // Store the Longitude data } } i=0; lcdcmd(0x80); while(i<11) { lcddata(lati_data[i]); // Print the Latitude data i++; } i=0; lcdcmd(0xC0); while(i<12) { lcddata(longi_data[i]); // Print the Longitude data i++; } } } } } } } } Delay_ms(1000); for(i=0;i<12;i++) { data=0; lati_data[i]=0; longi_data[i]=0; } } } unsigned char rx_data(void) { while(PIR1.RCIF==0); // Wait until RCIF gets low return RCREG; // Store data in Reception register } void lcd_ini() { lcdcmd(0x38); // Configure the LCD in 8-bit mode, 2 line and 5x7 font lcdcmd(0x0C); // Display On and Cursor Off lcdcmd(0x01); // Clear display screen lcdcmd(0x06); // Increment cursor lcdcmd(0x80); // Set cursor position to 1st line, 1st column } void lcdcmd(unsigned char cmdout) { lcdport=cmdout; //Send command to lcdport=PORTB rs=0; rw=0; en=1; Delay_ms(10); en=0; } void lcddata(unsigned char dataout) { lcdport=dataout; //Send data to lcdport=PORTB rs=1; rw=0; en=1; Delay_ms(10); en=0; }
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