Posted on March 22, 2006 at 05:52Hello,
we are using the str710 with HDLC :
our transfert is like this :
receive - answer - receive - answer etc...
- when we are polling the HDLC receive line everything is working well like in your example
we have : receive - answer - receive - answer etc...
- when we want to use the HDLC IT:
we have : RMC (ok) - TMC (ok) - RMC just after TMS (?- data n°1) - RMC (ok - data n°2) - TMC (ok) - RMC just after TMS (? - data n°3) - RMC (ok - data n°4)
I notice that :
data n°1 = data n°2
data n°3 = data n°4
but for data n°1 and data n°3 REN=1 : what does it mean?
here is the code :
init_hdlc :
HDLC_ITConfig(HDLC_RMCM|HDLC_TMCM,ENABLE);
EIC_IRQChannelPriorityConfig(HDLC_IRQChannel,4);
EIC_IRQChannelConfig(HDLC_IRQChannel,ENABLE);
void HDLC_IRQHandler(void)
{
if(HDLC_ReadInterruptStatus(HDLC_RMC))
{
if (HDLC_ReadPCRStatus(HDLC_REN)==1)
{
HDLC_ClearInterruptStatus(HDLC_RBF | HDLC_RMC);
HDLC_Recv_Control(ENABLE);
return 1;
}
if (HDLC_ReadInterruptStatus(HDLC_RBF))
{
HDLC_ClearInterruptStatus(HDLC_RBF);
if (HDLC_ReceiveHalfBufferStatus()== HDLC_RECV_HIGH_HALF_BUFFER_FULL)
recv_buf_addr = HDLC_RECEIVEBUFFER_BASE_HI;
}
bytecount = HDLC_RecvFrameByteCountRead ();
for(addr = recv_buf_addr; addr
{
pBufr[i] = (*(u8 *)addr);
i++;
}
//here I put data in fifo
HDLC_ClearInterruptStatus(HDLC_RBF | HDLC_RMC);
}
else if (HDLC_ReadInterruptStatus(HDLC_TMC))
{
HDLC_ClearInterruptStatus(HDLC_TMC);
HDLC_Recv_Control(ENABLE);
}
}
