static void h3600_micro_process_char( unsigned char rxchar )
{
switch ( g_rxdev.state ) {
case STATE_SOF: /* Looking for SOF */
if ( rxchar == CHAR_SOF )
g_rxdev.state=STATE_ID; /* Next byte is the id and len */
else
g_statistics.missing_sof++;
break;
case STATE_ID: /* Looking for id and len byte */
g_rxdev.id = ( rxchar & 0xf0 ) >> 4 ;
g_rxdev.len = ( rxchar & 0x0f );
g_rxdev.index = 0;
g_rxdev.chksum = rxchar;
g_rxdev.state = ( g_rxdev.len > 0 ) ? STATE_DATA : STATE_CHKSUM;
break;
case STATE_DATA: /* Looking for 'len' data bytes */
g_rxdev.chksum += rxchar;
g_rxdev.buf[g_rxdev.index]= rxchar;
if ( ++g_rxdev.index == g_rxdev.len )
g_rxdev.state = STATE_CHKSUM;
break;
case STATE_CHKSUM: /* Looking for the checksum */
if ( rxchar == g_rxdev.chksum )
h3600_micro_rx_msg( g_rxdev.id, g_rxdev.len, g_rxdev.buf );
else
g_statistics.bad_checksum++;
g_rxdev.state = STATE_SOF;
break;
}
}
static void h3600_micro_process_char( unsigned char ch )
{
switch ( rx.state ) {
case STATE_SOF: /* Looking for SOF */
if ( ch == CHAR_SOF )
rx.state=STATE_ID; /* Next byte is the id and len */
//else
// g_statistics.missing_sof++;
break;
case STATE_ID: /* Looking for id and len byte */
rx.id = ( ch & 0xf0 ) >> 4 ;
rx.len = ( ch & 0x0f );
rx.index = 0;
rx.chksum = ch;
rx.state = ( rx.len > 0 ) ? STATE_DATA : STATE_CHKSUM;
break;
case STATE_DATA: /* Looking for 'len' data bytes */
rx.chksum += ch;
rx.buf[rx.index]= ch;
if ( ++rx.index == rx.len )
rx.state = STATE_CHKSUM;
break;
case STATE_CHKSUM: /* Looking for the checksum */
if ( ch == rx.chksum )
h3600_micro_rx_msg( rx.id, rx.len, rx.buf );
//else
// g_statistics.bad_checksum++;
rx.state = STATE_SOF;
break;
}
}
