// -------------------------------------------------------------------------
static int refresh( Device *dv ){
//#ifdef DEBUG
//printf( "Refresh: %d, %d, %s, %d\n", dv->id, dv->adr, dv->name, dv->reg );
//#endif
dv->err = 0;
// закодировать dv->cmd, dv->cmd_len в buffer
str_err = "dv->coder_frm";
memset( buffer, 0, sizeof( buffer ));
buf_len = dv->coder_frm( dv->adr, dv->frm, dv->frm_len, buffer );
if( buf_len < 2 ){
dv->err = E_CODER;
buf_len = 0;
return 0;
}
// --
// передача в устройство
str_err = "write_transport";
int tmp = write_transport( buffer, buf_len );
if( tmp < 0 ){
dv->err = tmp;
return 0;
}
// --
// чтение из устройства
str_err = "read_transport";
memset( buffer, 0, sizeof( buffer ));
buf_len = read_transport( buffer, ( sizeof( buffer ) - 1 ));
if( buf_len < 0 ){
dv->err = buf_len;
buf_len = 0;
return 0;
}
// --
if( buf_len >= (signed)sizeof( buffer ) ){
dv->err = E_TR_READ;
buf_len = 0;
return 0;
}
// --
// распаковать ответ
str_err = "dv->decoder";
buf_len = dv->decoder( dv->adr, buffer, buf_len );
if( buf_len < 0 ){
dv->err = buf_len;
buf_len = 0;
return 0;
}
// --
str_err = "end refresh";
return 1;
}// End refresh()
//-----------------------------------------------------------------------------
// read an incoming message from datalink to network layer
void read_network(int link, size_t length, char * datagram) {
DATAGRAM dtg;
memcpy(&dtg, datagram, length);
// dispatch the datagram
if (is_kind(dtg.kind,__DISCOVER__))
do_discovery(link, dtg);
if (is_kind(dtg.kind,__ROUTING__))
do_routing(link, dtg);
if (is_kind(dtg.kind,__TRANSPORT__)) {
PACKET pkt;
size_t len_to_cpy = dtg.length;
memcpy((char*)&pkt, dtg.payload, len_to_cpy);
if ((CnetAddr)(dtg.dest) != nodeinfo.address) {
route(dtg);
packets_forwarded_total++;
} else
read_transport(dtg.kind, dtg.length, dtg.src, (char*)dtg.payload);
}
}
