RoboSavvy Forum

Help, error with types on constants and var's

2010-05-26T09:53:04+01:00

Thank you, Macro.h was not using.

I am begginer, and do not know like well this works.

Statistics: Posted by koli — Wed May 26, 2010 9:53 am

Help, error with types on constants and var's

2010-05-24T18:37:40+01:00

assuming you're using gcc avr or windows equivalent then make sure you have Macro.h or at least include the following

Code:: #define BYTE unsigned char #define WORD unsigned int #define UDRE 5 #define RXC 7 #define DATA_REGISTER_EMPTY (1<#define RX_COMPLETE (1<



The receive function requires the timer interrupt to enable timeouts, or you could remove that codeStatistics: Posted by l3v3rz — Mon May 24, 2010 6:37 pm



Help, error with types on constants and var's
2010-05-24T10:00:32+01:00

These routines give me many mistakes

//------------------------------------------------------------------------------
// void SendByte(BYTE)
//------------------------------------------------------------------------------
void sciTx0Data(BYTE td) // ERROR:DECLARATION SYNTAX ERROR
{
   while(!(UCSR0A&(1<   UDR0=td;        //ERROR: a value of type(*)()' can't be assigned to an entity of type unsigned 'sfrb'

}

void sciTx1Data(BYTE td)// ERROR:DECLARATION SYNTAX ERROR
{
   while(!(UCSR1A&(1<   UDR1=td;       //ERROR: a value of type(*)()' can't be assigned to an entity of type unsigned 'unsigned char'

}

Not as solving them

 Thank youStatistics: Posted by koli — Mon May 24, 2010 10:00 am




Help, error with types on constants and var's
2010-05-21T00:04:37+01:00

I think you need these two routines .... (from Comm.c)

Note - the timeout seems to fixed at RX_T_OUT. Also needs the Timer Int running to update gMSec. 

Code: 

#define RX_T_OUT       20  // from Comm.h

//------------------------------------------------------------------------------
// void SendByte(BYTE)
//------------------------------------------------------------------------------
void sciTx0Data(BYTE td)
{
   while(!(UCSR0A&(1<   UDR0=td;
}


//------------------------------------------------------------------------------
// BYTE ReadByte()
//------------------------------------------------------------------------------
BYTE sciRx0Ready()
{
   WORD   startT;
   startT = gMSEC;
   while(!(UCSR0A&(1<        if(gMSECRX_T_OUT) break;
        }
      else if((gMSEC-startT)>RX_T_OUT) break;
   }
   return UDR0;
}
Statistics: Posted by l3v3rz — Fri May 21, 2010 12:04 am




Help, error with types on constants and var's
2010-05-20T14:32:15+01:00

thanks!!!

Please did you may, to put on the code of the function GetByte and that of the SendByte??

not find in any site,
GetByte receibe 1 byte from serial port
SendByte send 1 byte to serial port

 Thank you very much in advance.Statistics: Posted by koli — Thu May 20, 2010 2:32 pm




Help, error with types on constants and var's
2010-05-20T14:09:53+01:00

The function prototype for GetByte in the example appears to have a void return:
void GetByte(char timeout); // Receive 1 Byte from serial port
I guess this should be a char returned to match your serial routines.Statistics: Posted by i-Bot — Thu May 20, 2010 2:09 pm




Help, error with types on constants and var's
2010-05-20T09:41:59+01:00

Hi,
even they are declared as same type (char) I get the next error when I try to compile source:
a value of type 'const void' can't be assigned to an entity type 'unsigned char'
I'm using codevision AVR

The example of code is:

char PosSend(char ServoID, char SpeedLevel, char Position)
{
 char Current; 
 SendOperCommand((SpeedLevel<<5)|ServoID, Position);
 GetByte(TIME_OUT1);                  
 Current = GetByte(TIME_OUT1); //      LINE WHERE I GOT THE ERROR
 return Current;
}

This code is an example of robobuilder-creator-users-manual.pdf page 63Statistics: Posted by koli — Thu May 20, 2010 9:41 am