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How to process the data from UART?

Hi all .
In one way ,all the messages is following a standard format ,like:"SOH,MSG ID, CMPL ID,MSG DATA LENGTH, MSG DATA ,CHECKSUM",so this format can be embed in UART_ISR to receive the message wanted.But,if have some different kinds of message which following different formats ,or baudrate is too high to process in the UART_ISR,how can the firmware process these message?Where have any referenced source code ?
Thanks for help.

Parents

0 Nantian Gumo over 20 years ago in reply to Karl Hamsher

I rewrite the source code as following:

//Serial ISR:
void serial0(void) interrupt 4
{
    ES0 = 0;
    if (TI0) TI0 =0;
    if (RI0)
    {
        r_buf[r_in&0x7ff]=SBUF0;
        RI0 = 0;
        r_in=r_in+1;
    }
    ES0 = 1;
}
//Main_Loop:
void main()
{
...
while(1)
{
    if ((r_in-r_out)>128)
    {
        serial0Flag = 1;
    }
    if(serial0Flag==1)
    {
        if (r_buf[r_out&0x7ff] =='$')
        {
            memcpy(sHeadFlag,&r_buf[(r_out+1)&0x7ff],5);
            if (memcmp(sHeadFlag,sGpgs[0],5)==0)
            {
                GpgsvSol(&r_buf[r_out&0x7ff]);
            }
            if (memcmp(sHeadFlag,sGpgs[1],5)==0)
            {
                GpgsaSol(&r_buf[r_out&0x7ff]);
                atelliteLocked=Gpgsa.cSatInSolTol;
            }
         }
     r_out++;
     }
}
}

How can i correct it well?
Thanks.

Reply

0 Nantian Gumo over 20 years ago in reply to Karl Hamsher

I rewrite the source code as following:

//Serial ISR:
void serial0(void) interrupt 4
{
    ES0 = 0;
    if (TI0) TI0 =0;
    if (RI0)
    {
        r_buf[r_in&0x7ff]=SBUF0;
        RI0 = 0;
        r_in=r_in+1;
    }
    ES0 = 1;
}
//Main_Loop:
void main()
{
...
while(1)
{
    if ((r_in-r_out)>128)
    {
        serial0Flag = 1;
    }
    if(serial0Flag==1)
    {
        if (r_buf[r_out&0x7ff] =='$')
        {
            memcpy(sHeadFlag,&r_buf[(r_out+1)&0x7ff],5);
            if (memcmp(sHeadFlag,sGpgs[0],5)==0)
            {
                GpgsvSol(&r_buf[r_out&0x7ff]);
            }
            if (memcmp(sHeadFlag,sGpgs[1],5)==0)
            {
                GpgsaSol(&r_buf[r_out&0x7ff]);
                atelliteLocked=Gpgsa.cSatInSolTol;
            }
         }
     r_out++;
     }
}
}

How can i correct it well?
Thanks.

Children

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