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| //***************************************************************************** |
| // File Name : gpstest.c |
| // |
| // Title : example usage of gps processing library functions |
| // Revision : 1.0 |
| // Notes : |
| // Target MCU : Atmel AVR series |
| // Editor Tabs : 4 |
| // |
| // Revision History: |
| // When Who Description of change |
| // ----------- ----------- ----------------------- |
| // 10-Sep-2002 pstang Created the program |
| //***************************************************************************** |
| |
| //----- Include Files --------------------------------------------------------- |
| #include <avr/io.h> // include I/O definitions (port names, pin names, etc) |
| #include <avr/interrupt.h> // include interrupt support |
| //#include <math.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| |
| #include "global.h" // include our global settings |
| #include "uart2.h" // include dual-uart function library |
| #include "rprintf.h" // include printf function library |
| #include "timer.h" // include timer function library (timing, PWM, etc) |
| #include "gps.h" // include gps data support |
| #include "tsip.h" // include TSIP gps packet handling |
| #include "nmea.h" // include NMEA gps packet handling |
| #include "vt100.h" // include VT100 terminal commands |
| |
| #include <util/delay.h> |
| |
| |
| // LCD Library |
| #include "lcd_hd44780.h" |
| |
| static int lcd_putc_stream(char c, FILE *unused) |
| { |
| return lcd_putc(c); |
| } |
| |
| // Define Output Stream to LCD |
| static FILE lcd_stream = FDEV_SETUP_STREAM(lcd_putc_stream, NULL, _FDEV_SETUP_WRITE); |
| |
| // uartRxOverflow is a global variable defined in uart.c/uart2.c |
| // we define it here as <extern> here so that we can use its value |
| // in code contained in this file |
| extern unsigned short uartRxOverflow[2]; |
| |
| void gpsTsipTest(void); |
| void gpsNmeaTest(void); |
| |
| |
| //----- Begin Code ------------------------------------------------------------ |
| int main(void) |
| { |
| sbi(DDRC, 0); // sets PC0 to be an output |
| cbi(PORTC, 0); // sets PC0 to output a HIGH |
| _delay_ms(100); |
| sbi(PORTC, 0); // sets PC0 to output a LOW |
| _delay_ms(100); |
| cbi(PORTC, 0); // sets PC0 to output a HIGH |
| _delay_ms(100); |
| sbi(PORTC, 0); // sets PC0 to output a LOW |
| _delay_ms(100); |
| // initialize our libraries |
| // initialize the UART (serial port) |
| // uartInit(); |
| uart1Init(); |
| |
| sbi(DDRC, 1); // sets PC0 to be an output |
| cbi(PORTC, 1); // sets PC0 to output a HIGH |
| _delay_ms(100); |
| sbi(PORTC, 1); // sets PC0 to output a LOW |
| _delay_ms(100); |
| cbi(PORTC, 1); // sets PC0 to output a HIGH |
| _delay_ms(100); |
| sbi(PORTC, 1); // sets PC0 to output a LOW |
| _delay_ms(100); |
| |
| // set the baud rate of UART 0 for our debug/reporting output |
| // uartSetBaudRate(0,9600); |
| // set uart0SendByte as the output for all rprintf statements |
| // rprintfInit(uart0SendByte); |
| |
| // initialize the timer system |
| timerInit(); |
| // initialize vt100 library |
| // vt100Init(); |
| |
| // print a little intro message so we know things are working |
| // vt100ClearScreen(); |
| // rprintf("\r\nWelcome to GPS Test!\r\n"); |
| // timerPause(1000); |
| |
| lcd_init(); // Init LCD (interface and display module) |
| rprintfInit(lcd_putc); |
| rprintfProgStrM("Ahoj..."); rprintfCRLF(); |
| _delay_ms(500); |
| lcd_clear(); |
| |
| // run example gps processing loop |
| // (pick the one appropriate for your GPS packet format) |
| gpsNmeaTest(); |
| |
| return 0; |
| } |
| |
| |
| void gpsNmeaTest(void) |
| { |
| // set the baud rate of UART 1 for NMEA |
| uartSetBaudRate(1,4800); |
| |
| // clear screen |
| // vt100ClearScreen(); |
| // initialize gps library |
| gpsInit(); |
| // initialize gps packet decoder |
| nmeaInit(); |
| |
| /* |
| DDRA = 0b11110101; // sets PA0 O, PA1 I, PA2 O |
| cbi(PORTA, 0); // sets PC0 to output a LOW |
| sbi(PORTA, 2); // sets PC2 to output a HIGH |
| */ |
| DDRD = 0b10100000; // sets PD7 O, PD6 I, PD5 O |
| cbi(PORTD, 7); // sets PD7 to output a LOW |
| sbi(PORTD, 5); // sets PD5 to output a HIGH |
| |
| // begin gps packet processing loop |
| while(1) |
| { |
| // process received gps packets until receive buffer is exhausted |
| while( nmeaProcess(uartGetRxBuffer(1))== NMEA_NODATA); |
| if((inb(PIND) & 0b01000000)==0) |
| gpsInfoPrintLCD(); |
| else |
| gpsInfoPrintLCD2(); |
| |
| sbi(DDRC, 0); // sets PC0 to be an output |
| cbi(PORTC, 0); // sets PC0 to output a LOW |
| _delay_ms(5); |
| sbi(PORTC, 0); // sets PC0 to output a HIGH |
| } |
| } |
| |