mohansaini
Junior Member level 1
Hi all
I am receiving 116 bytes of data on serial port the packet format is fixed as i am receiving Byte0 and Byte1 as '<' and at Byte114 and Byte115
as '>' just to check thet i am receiving a right packet. for that purpose i have written the ISR as
Now the problem is that if any time length of data is not 116 and Byte0 and Byte1 are '<' the variable count1 will not become 0 so that data will be lost in the next attempt as well.
Please help me out what can i do to make it a very generif function so that it will check the length as well.
I am receiving 116 bytes of data on serial port the packet format is fixed as i am receiving Byte0 and Byte1 as '<' and at Byte114 and Byte115
as '>' just to check thet i am receiving a right packet. for that purpose i have written the ISR as
Code:
void __attribute__ ((interrupt,no_auto_psv)) _U1RXInterrupt (void)
{
static unsigned char count1=0;
unsigned char data;
data=U1RXREG;
CalData[count1]=data;
count1++;
if((CalData[0]=='<')||(CalData[1]=='<')) //&&(CalData[114]=='>')&&(CalData[115]=='>'))//we have received right packet now set the flag
{
// CalData[count1++]=data;
if(((CalData[114]=='>')&&(CalData[115]=='>'))&&(count1>=116))
{
Rxr_Flag=1;
count1=0;
}//Received complete packet
// else
// {
// count1=0;
// } //There is something wrong with at the end of the packet
}
else
{
count1=0; //There is some missmatch with thwe data.
}
IFS0bits.U1RXIF=0;
}Now the problem is that if any time length of data is not 116 and Byte0 and Byte1 are '<' the variable count1 will not become 0 so that data will be lost in the next attempt as well.
Please help me out what can i do to make it a very generif function so that it will check the length as well.
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