void erpDisplayPacket(ErpPacket* erpPacket, u08 pktLength)
{
u08 i;
u08 flag;
// show ERP packet header
erpDisplayHeader(erpPacket);
// dump complete raw packet data
if(pktLength)
{
// check if all characters are printable
flag = TRUE;
for(i=0; i<pktLength; i++)
{
if( ((u08*)erpPacket)[i] < 0x20 ) flag = FALSE;
}
// print packet data
rprintf("Data:\r\n");
if(flag)
{
// print as string
rprintfStrLen(((u08*)erpPacket), 0, pktLength);
}
else
{
// print as hex
debugPrintHexTable(pktLength, ((u08*)erpPacket));
}
rprintfCRLF();
}
}
// functions
void erpDisplayHeader(ErpPacket* erpPacket)
{
// show ERP packet header
rprintf("ERP Header: Callsign=");
rprintfStrLen(erpPacket->CallSign,0,CALLSIGN_FIELD_LEN);
rprintf(", Trg=0x%x, Src=0x%x, Seq#=%d, Type=",
erpPacket->ToAddress,
erpPacket->FromAddress,
erpPacket->SequenceNum);
// try to decode packet type
switch(erpPacket->Type)
{
case ERP_ECHO: rprintf("ECHO"); break;
case ERP_ECHOREPLY: rprintf("ECHOREPLY"); break;
case ERP_TEST: rprintf("TEST"); break;
case ERP_EDPCOMMAND: rprintf("EDPCOMMAND"); break;
case ERP_EDPREPLY: rprintf("EDPREPLY"); break;
case ERP_EDPREPLYNODEV: rprintf("EDPREPLYNODEV"); break;
default: rprintf("0x%x", erpPacket->Type); break;
}
rprintfCRLF();
}
uint8_t nmeaProcess(cBuffer* rxBuffer)
{
uint8_t foundpacket = NMEA_NODATA;
uint8_t startFlag = FALSE;
//uint8_t data;
uint16_t i,j;
// process the receive buffer
// go through buffer looking for packets
while(rxBuffer->datalength)
{
// look for a start of NMEA packet
if(bufferGetAtIndex(rxBuffer,0) == '$')
{
// found start
startFlag = TRUE;
// when start is found, we leave it intact in the receive buffer
// in case the full NMEA string is not completely received. The
// start will be detected in the next nmeaProcess iteration.
// done looking for start
break;
}
else
bufferGetFromFront(rxBuffer);
}
// if we detected a start, look for end of packet
if(startFlag)
{
for(i=1; i<(rxBuffer->datalength)-1; i++)
{
// check for end of NMEA packet <CR><LF>
if((bufferGetAtIndex(rxBuffer,i) == '\r') && (bufferGetAtIndex(rxBuffer,i+1) == '\n'))
{
// have a packet end
// dump initial '$'
bufferGetFromFront(rxBuffer);
// copy packet to NmeaPacket
for(j=0; j<(i-1); j++)
{
// although NMEA strings should be 80 characters or less,
// receive buffer errors can generate erroneous packets.
// Protect against packet buffer overflow
if(j<(NMEA_BUFFERSIZE-1))
NmeaPacket[j] = bufferGetFromFront(rxBuffer);
else
bufferGetFromFront(rxBuffer);
}
// null terminate it
NmeaPacket[j] = 0;
// dump <CR><LF> from rxBuffer
bufferGetFromFront(rxBuffer);
bufferGetFromFront(rxBuffer);
#ifdef NMEA_DEBUG_PKT
rprintf("Rx NMEA packet type: ");
rprintfStrLen(NmeaPacket, 0, 5);
rprintfStrLen(NmeaPacket, 5, (i-1)-5);
rprintfCRLF();
#endif
// found a packet
// done with this processing session
foundpacket = NMEA_UNKNOWN;
break;
}
}
}
if(foundpacket)
{
// check message type and process appropriately
if(!strncmp(NmeaPacket, "GPGGA", 5))
{
// process packet of this type
nmeaProcessGPGGA(NmeaPacket);
// report packet type
foundpacket = NMEA_GPGGA;
}
else if(!strncmp(NmeaPacket, "GPVTG", 5))
{
// process packet of this type
nmeaProcessGPVTG(NmeaPacket);
// report packet type
foundpacket = NMEA_GPVTG;
}
}
else if(rxBuffer->datalength >= rxBuffer->size)
{
// if we found no packet, and the buffer is full
// we're logjammed, flush entire buffer
bufferFlush(rxBuffer);
}
return foundpacket;
}
void rprintfTest(void)
{
u16 val;
u08 mydata;
u08 mystring[10];
float b;
u08 small;
u16 medium;
u32 big;
// print a little intro message so we know things are working
rprintf("\r\nThis is my cool program!\r\n");
rprintf("\r\nWelcome to rprintf Test!\r\n");
// print single characters
rprintfChar('H');
rprintfChar('e');
rprintfChar('l');
rprintfChar('l');
rprintfChar('o');
// print a constant string stored in FLASH
rprintfProgStrM(" World!");
// print a carriage return, line feed combination
rprintfCRLF();
// note that using rprintfCRLF() is more memory-efficient than
// using rprintf("\r\n"), especially if you do it repeatedly
mystring[0] = 'A';
mystring[1] = ' ';
mystring[2] = 'S';
mystring[3] = 't';
mystring[4] = 'r';
mystring[5] = 'i';
mystring[6] = 'n';
mystring[7] = 'g';
mystring[8] = '!';
mystring[9] = 0; // null termination
// print a null-terminated string from RAM
rprintfStr(mystring);
rprintfCRLF();
// print a section of a string from RAM
// - start at index 2
// - print 6 characters
rprintfStrLen(mystring, 2, 6);
rprintfCRLF();
val = 24060;
mydata = 'L';
// print a decimal number
rprintf("This is a decimal number: %d\r\n", val);
// print a hex number
rprintf("This is a hex number: %x\r\n", mydata);
// print a character
rprintf("This is a character: %c\r\n", mydata);
// print hex numbers
small = 0x12; // a char
medium = 0x1234; // a short
big = 0x12345678; // a long
rprintf("This is a 2-digit hex number (char) : ");
rprintfu08(small);
rprintfCRLF();
rprintf("This is a 4-digit hex number (short): ");
rprintfu16(medium);
rprintfCRLF();
rprintf("This is a 8-digit hex number (long) : ");
rprintfu32(big);
rprintfCRLF();
// print a formatted decimal number
// - use base 10
// - use 8 characters
// - the number is signed [TRUE]
// - pad with '.' periods
rprintf("This is a formatted decimal number: ");
rprintfNum(10, 8, TRUE, '.', val);
rprintfCRLF();
b = 1.23456;
// print a floating point number
// use 10-digit precision
// NOTE: TO USE rprintfFloat() YOU MUST ENABLE SUPPORT IN global.h
// use the following in your global.h: #define RPRINTF_FLOAT
//rprintf("This is a floating point number: ");
//rprintfFloat(8, b);
//rprintfCRLF();
}
/*******************************************************************
* rprintf_test
*******************************************************************/
void rprintf_test(void)
{
u16 val;
u08 mydata;
u08 mystring[10];
double b;
u08 small;
u16 medium;
u32 big;
// initialize the UART (serial port)
uartInit();
// set the baud rate of the UART for our debug/reporting output
uartSetBaudRate(38400);
// initialize rprintf system
// - use uartSendByte as the output for all rprintf statements
// this will cause all rprintf library functions to direct their
// output to the uart
// - rprintf can be made to output to any device which takes characters.
// You must write a function which takes an unsigned char as an argument
// and then pass this to rprintfInit like this: rprintfInit(YOUR_FUNCTION);
rprintfInit(uartSendByte);
// initialize vt100 library
vt100Init();
// clear the terminal screen
vt100ClearScreen();
while (!(getkey() == 1)) //do the folling block until enter is pressed
{
// print a little intro message so we know things are working
rprintf("\r\nWelcome to rprintf Test!\r\n");
// print single characters
rprintfChar('H');
rprintfChar('e');
rprintfChar('l');
rprintfChar('l');
rprintfChar('o');
// print a constant string stored in FLASH
rprintfProgStrM(" World!");
// print a carriage return, line feed combination
rprintfCRLF();
// note that using rprintfCRLF() is more memory-efficient than
// using rprintf("\r\n"), especially if you do it repeatedly
mystring[0] = 'A';
mystring[1] = ' ';
mystring[2] = 'S';
mystring[3] = 't';
mystring[4] = 'r';
mystring[5] = 'i';
mystring[6] = 'n';
mystring[7] = 'g';
mystring[8] = '!';
mystring[9] = 0; // null termination
// print a null-terminated string from RAM
rprintfStr(mystring);
rprintfCRLF();
// print a section of a string from RAM
// - start at index 2
// - print 6 characters
rprintfStrLen(mystring, 2, 6);
rprintfCRLF();
val = 24060;
mydata = 'L';
// print a decimal number
rprintf("This is a decimal number: %d\r\n", val);
// print a hex number
rprintf("This is a hex number: %x\r\n", mydata);
// print a character
rprintf("This is a character: %c\r\n", mydata);
// print hex numbers
small = 0x12; // a char
medium = 0x1234; // a short
big = 0x12345678; // a long
rprintf("This is a 2-digit hex number (char) : ");
rprintfu08(small);
rprintfCRLF();
rprintf("This is a 4-digit hex number (short): ");
rprintfu16(medium);
rprintfCRLF();
rprintf("This is a 8-digit hex number (long) : ");
rprintfu32(big);
rprintfCRLF();
// print a formatted decimal number
// - use base 10
// - use 8 characters
// - the number is signed [TRUE]
// - pad with '.' periods
rprintf("This is a formatted decimal number: ");
rprintfNum(10, 8, TRUE, '.', val);
rprintfCRLF();
b = 1.23456;
// print a floating point number
// use 10-digit precision
// NOTE: TO USE rprintfFloat() YOU MUST ENABLE SUPPORT IN global.h
// use the following in your global.h: #define RPRINTF_FLOAT
rprintf("This is a floating point number: ");
rprintfFloat(8, b);
rprintfCRLF();
}
}