Protocolo ETHERLITE
Apuntes sobre el protocolo del etherlite, obtenidos leyendo los fuentes del driver dgrp-1.9.40 para linux 2.6.27 y de capturas de tráfico de red entre el anden2 y una UIS.Notas generales:
- Es un protocolo BIG ENDIAN (un "u16_t s" se manda como "((s>>8)&0xff) (s&0xff)")
Mensajes PC -> ETHERLITE
Password reply (dgrp_net_ops.c:1846)
| Field | size | Contents | Notes |
| Header | 2 | 0xfd 0x20 | |
| Passwd size | 2 | ((strlen(passwd)>>8)&0xff) (strlen(passwd)&0xff) | |
| Passwd | strlen(passwd) | (n bytes of string passwd) |
ImmediateOpen/PersistentOpen/IncomingOpen/Close/CancelOpen Request (dgrp_net_ops.c:1932, dgrp_net_ops.c:1932, dgrp_net_ops.c:1959, dgrp_net_ops:1976, dgrp_net_ops:2513)
| Field | size | Contents | Notes |
| Header | 2 | (0xb0+(port&0xf)) 0x0a | |
| Type | 1 | (0x00 or 0x01 or 0x02 or 0x03 or 0x04) | 0x00:Immediate Open Request 0x01:Persistent Open Request 0x02:Incoming Open Request 0x03:Close Request 0x04:Cancel Open Request (cancels a pending ImmediateOpen/PersistentOpen/IncomingOpen request) |
CompositeCommand: Send Query (dgrp_net_ops.c:1994)
| Field | size | Contents | Notes |
| SequenceRequest | 2 | (0xb0+(port&0xf)) 0x0e | |
| ConfigureEventConditions | 5 | (0xb0+(port&0xf)) 0x2a 0x02 0xc0 (DM_DTR(0x01) bitwiseor DM_RTS(0x02) bitwiseor DM_CTS(0x10) bitwiseor DM_DSR(0x20) bitwiseor DM_RI(0x40) bitwiseor DM_CD(0x80)) | |
| StatusRequest | 2 | (0xb0+(port&0xf)) 0x10 | |
| BufferRequest | 2 | (0xb0+(port&0xf)) 0x14 | |
| PortCapabilityRequest | 2 | (0xb0+(port&0xf)) 0x16 | |
| RaiseModemSignals | 5 | (0xb0+(port&0xf)) 0x2c (DM_DTR(0x01) bitwiseor DM_RTS(0x02)) mflownone(0x00) mcontrolnone(0x00) |
CompositeCommand: Ready Mode (dgrp_net_ops.c:2114)
| Field | size | Contents | Notes |
| SendTmaxTtime (optional) | 6 | (0xb0+(port&0xf)) 0x30 ((Tmax>>8)&0xff) (Tmax&0xff) ((Ttime>>8)&0xff) (Ttime&0xff) | (only sent if changed from last TmaxTtime sent) |
| SendRlowRhigh (optional) | 6 | (0xb0+(port&0xf)) 0x2d ((Rlow>>8)&0xff) (Rlow&0xff) ((Rhigh>>8)&0xff) (Rhigh&0xff) | (only sent if changed from last RlowRhigh sent) |
| SendBrateCflagIflagOflagXflag (optional) | 12 | (0xb0+(port&0xf)) 0x28 ((Brate>>8)&0xff) (Brate&0xff) ((Cflag>>8)&0xff) (Cflag&0xff) ((Iflag>>8)&0xff) (Iflag&0xff) ((Oflag>>8)&0xff) (Oflag&0xff) ((Xflag>>8)&0xff) (Xflag&0xff) | (only sent if changed from last SendBrateCflagIflagOflagXflag sent) |
| SendMoutMflowMctrl (optional) | 5 | (0xb0+(port&0xf)) 0x2c (Mout&0xff) (Mflow&0xff) (Mctrl&0xff) | (only sent if changed from last SendMoutMflowMctrl) |
| SendFlowControlCharacters (optional) | 7 | (0xb0+(port&0xf)) 0x2e (Xon&0xff) (Xoff&0xff) (Lnext&0xff) (Xxon&0xff) (Xxoff&0xff) | (only sent if changed from last SendFlowControlCharacters) |
| SendRmaxRtime (optional) | 6 | (0xb0+(port&0xf)) 0x2f ((Rmax>>8)&0xff) (Rmax&0xff) ((Rtime>>8)&0xff) (Rtime&0xff) | (only sent if changed from last RmaxRtime sent) |
| SendCharacterImmediate (optional) | 3 | (0xb0+(port&0xf)) 0x3c (Xon&0xff) | Put this mode only if was pending (requested by user) |
| BreakRequest (optional) | 4 | (0xb0+(port&0xf)) 0x3d ((Breaktime>>8)&0xff) (Breaktime&0xff) | Send this only if was pending (requested by user) |
| FlushIOBuffers (optional) | 3 | (0xb0+(port&0xf)) 0x3e (Rxflush(0x1) bitwiseor Txflush(0x2)) | Send this only if was pending (requested by user) |
| PauseIO (optional) | 3 | (0xb0+(port&0xf)) 0x33 (Txstop(0x1) bitwiseor Rxstop(0x10)) | Send this only if was pending (requested by user) |
| StartIO (optional) | 3 | (0xb0+(port&0xf)) 0x40 (EvOpu(0x1) bitwiseor EvOps(0x2) bitwiseor EvOpx(0x4) bitwiseor EvIpu(0x10) bitwiseor EvIps(0x20)) | Send this only if was pending (requested by user); (EvOpu bitwiseor EvOps bitwiseor EvOpx) is sent when RR_TX_START and (EvIpu bitwiseor EvIps) when RX_START |