+/*
+
+ G N O K I I
+
+ A Linux/Unix toolset and driver for Nokia mobile phones.
+
+ Released under the terms of the GNU GPL, see file COPYING for more details.
+
+ This file provides an API for support for FBUS protocol
+
+*/
+
+/* "Turn on" prototypes in fbus.h */
+#define __fbus_c
+
+/* System header files */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#ifdef WIN32
+ #include <windows.h>
+ #include "misc_win32.h"
+#else
+ #include <ctype.h>
+#endif
+
+/* Various header file */
+#include "devices/device.h"
+#include "gsm-api.h"
+#include "protocol/fbus.h"
+#include "protocol/at.h"
+#include "newmodules/newat.h"
+#include "newmodules/n6110.h"
+#include "misc.h"
+
+GSM_Protocol FBUS_Functions = {
+ FBUS_Initialise,
+ FBUS_SendMessage,
+ FBUS_SendFrame,
+ NULL_WritePhone,
+ FBUS_Terminate,
+ FBUS_RX_StateMachine
+};
+
+/* Local variables */
+enum FBUS_RX_States RX_State;
+
+u8 MessageDestination, MessageSource;
+
+u16 BufferCount, MultiBufferCount;
+
+u16 MessageLength, MultiMessageLength;
+
+bool RX_Multiple = false;
+
+u8 MessageType,MultiMessageType;
+
+u8 MessageBuffer[FBUS_MAX_RECEIVE_LENGTH * 6],MultiMessageBuffer[FBUS_MAX_RECEIVE_LENGTH * 6];
+
+u8 RequestSequenceNumber = 0x00;
+
+#ifdef DEBUG
+char *N61_PrintDevice(int Device)
+{
+ switch (Device) {
+
+ case FBUS_DEVICE_PHONE:return _("Phone");
+ case FBUS_DEVICE_PC :return _("PC");
+ default :return _("Unknown");
+ }
+}
+#endif /* DEBUG */
+
+/* N61_RX_DisplayMessage is called when a message we don't know about is
+ received so that the user can see what is going back and forth, and perhaps
+ shed some more light/explain another message type! */
+void N61_RX_DisplayMessage()
+{
+#ifdef DEBUG
+ fprintf(stdout, _("Msg Dest: %s\n"), N61_PrintDevice(MessageDestination));
+ fprintf(stdout, _("Msg Source: %s\n"), N61_PrintDevice(MessageSource));
+ fprintf(stdout, _("Msg Type: %02x\n"), MessageType);
+
+ hexdump(MessageLength-2,MessageBuffer);
+#endif
+
+ AppendLog(MessageBuffer,MessageLength-2,true);
+}
+
+/* Prepares the message header and sends it, prepends the message start byte
+ (0x1e) and other values according the value specified when called.
+ Calculates checksum and then sends the lot down the pipe... */
+int FBUS_SendFrame(u16 message_length, u8 message_type, u8 *buffer) {
+
+ /* Originally out_buffer[FBUS_MAX_CONTENT_LENGTH + 2],
+ but it made problems with MBUS */
+ u8 out_buffer[1000];
+
+ int count, current=0;
+ unsigned char checksum;
+
+ /* FIXME - we should check for the message length ... */
+
+ /* Now construct the message header. */
+
+ if (CurrentConnectionType==GCT_FBUS)
+ out_buffer[current++] = FBUS_FRAME_ID; /* Start of the frame indicator */
+ else
+ out_buffer[current++] = FBUS_IR_FRAME_ID; /* Start of the frame indicator */
+
+ out_buffer[current++] = FBUS_DEVICE_PHONE; /* Destination */
+
+ out_buffer[current++] = FBUS_DEVICE_PC; /* Source */
+
+ out_buffer[current++] = message_type; /* Type */
+
+ out_buffer[current++] = 0; /* Length1 */
+ out_buffer[current++] = message_length; /* Length2 */
+
+ /* Copy in data if any. */
+ if (message_length != 0) {
+ memcpy(out_buffer + current, buffer, message_length);
+ current+=message_length;
+ }
+
+ /* If the message length is odd we should add pad byte 0x00 */
+ if (message_length % 2)
+ out_buffer[current++]=0x00;
+
+ /* Now calculate checksums over entire message and append to message. */
+
+ /* Odd bytes */
+ checksum = 0;
+ for (count = 0; count < current; count+=2)
+ checksum ^= out_buffer[count];
+
+ out_buffer[current++] = checksum;
+
+ /* Even bytes */
+ checksum = 0;
+ for (count = 1; count < current; count+=2)
+ checksum ^= out_buffer[count];
+
+ out_buffer[current++] = checksum;
+
+#ifdef DEBUG
+ NULL_TX_DisplayMessage(current, out_buffer);
+#endif /* DEBUG */
+
+ /* Send it out... */
+ if (!NULL_WritePhone(current,out_buffer))
+ return (false);
+
+ return (true);
+}
+
+int FBUS_SendMessage(u16 message_length, u8 message_type, u8 *buffer) {
+
+ u8 seqnum;
+
+ u8 frame_buffer[FBUS_MAX_CONTENT_LENGTH + 2];
+
+ u8 nom, lml; /* number of messages, last message len */
+ int i;
+
+ seqnum = 0x40 + RequestSequenceNumber;
+ RequestSequenceNumber = (RequestSequenceNumber + 1) & 0x07;
+
+ if (message_length > FBUS_MAX_CONTENT_LENGTH) {
+
+ nom = (message_length + FBUS_MAX_CONTENT_LENGTH - 1)
+ / FBUS_MAX_CONTENT_LENGTH;
+ lml = message_length - ((nom - 1) * FBUS_MAX_CONTENT_LENGTH);
+
+ for (i = 0; i < nom - 1; i++) {
+
+ memcpy(frame_buffer, buffer + (i * FBUS_MAX_CONTENT_LENGTH),
+ FBUS_MAX_CONTENT_LENGTH);
+ frame_buffer[FBUS_MAX_CONTENT_LENGTH] = nom - i;
+ frame_buffer[FBUS_MAX_CONTENT_LENGTH + 1] = seqnum;
+
+ FBUS_SendFrame(FBUS_MAX_CONTENT_LENGTH + 2, message_type,
+ frame_buffer);
+
+ seqnum = RequestSequenceNumber;
+ RequestSequenceNumber = (RequestSequenceNumber + 1) & 0x07;
+ }
+
+ memcpy(frame_buffer, buffer + ((nom - 1) * FBUS_MAX_CONTENT_LENGTH), lml);
+ frame_buffer[lml] = 0x01;
+ frame_buffer[lml + 1] = seqnum;
+ FBUS_SendFrame(lml + 2, message_type, frame_buffer);
+
+ } else {
+
+ memcpy(frame_buffer, buffer, message_length);
+ frame_buffer[message_length] = 0x01;
+ frame_buffer[message_length + 1] = seqnum;
+ FBUS_SendFrame(message_length + 2, message_type, frame_buffer);
+ }
+
+ return (true);
+}
+
+int FBUS_SendAck(u8 message_type, u8 message_seq) {
+
+ unsigned char request[6];
+
+ request[0] = message_type;
+ request[1] = message_seq;
+
+#ifdef DEBUG
+ fprintf(stdout, _("[Sending Ack of type %02x, seq: %x]\n"), message_type, message_seq);
+#endif /* DEBUG */
+
+ return FBUS_SendFrame(2, FBUS_FRTYPE_ACK, request);
+}
+
+/* Applications should call FBUS_Terminate to shut down the FBUS thread and
+ close the serial port. */
+void FBUS_Terminate(void)
+{
+ /* Request termination of thread */
+ CurrentRequestTerminate = true;
+
+ /* Close serial port. */
+ device_close();
+}
+
+/* RX_State machine for receive handling. Called once for each character
+ received from the phone/phone. */
+
+void FBUS_RX_StateMachine(unsigned char rx_byte) {
+
+ static struct timeval time_now, time_last, time_diff;
+
+ static int checksum[2];
+
+ int i=0;
+
+// if (CurrentConnectionType==GCT_DLR3) {
+// AT_RX_StateMachine(rx_byte);
+// } else {
+
+#ifdef DEBUG
+ /* For model sniff only display received bytes */
+ if (strcmp(GSM_Info->FBUSModels, "sniff"))
+ {
+#endif
+
+ /* XOR the byte with the current checksum */
+ checksum[BufferCount&1] ^= rx_byte;
+
+ switch (RX_State) {
+
+ /* Messages from the phone start with an 0x1e (FBUS) or 0x1c (IR) or 0x1f (MBUS).
+ We use this to "synchronise" with the incoming data stream. However,
+ if we see something else, we assume we have lost sync and we require
+ a gap of at least 5ms before we start looking again. This is because
+ the data part of the frame could contain a byte which looks like the
+ sync byte */
+
+ case FBUS_RX_Discarding:
+
+#ifndef VC6
+ gettimeofday(&time_now, NULL);
+ timersub(&time_now, &time_last, &time_diff);
+ if (time_diff.tv_sec == 0 && time_diff.tv_usec < 5000) {
+ time_last = time_now; /* no gap seen, continue discarding */
+ break;
+ }
+ /* else fall through to... */
+#endif
+
+ case FBUS_RX_Sync:
+
+ if ((CurrentConnectionType==GCT_FBUS && rx_byte == FBUS_FRAME_ID) ||
+ ((CurrentConnectionType==GCT_Infrared ||
+ CurrentConnectionType==GCT_Tekram) && rx_byte == FBUS_IR_FRAME_ID)) {
+
+ BufferCount = 0;
+
+ RX_State = FBUS_RX_GetDestination;
+
+ /* Initialize checksums. */
+ checksum[0] = rx_byte;
+ checksum[1] = 0;
+ } else {
+ /* Lost frame sync */
+ RX_State = FBUS_RX_Discarding;
+#ifndef VC6
+ gettimeofday(&time_last, NULL);
+#endif
+ }
+ break;
+
+ case FBUS_RX_GetDestination:
+
+ MessageDestination=rx_byte;
+ RX_State = FBUS_RX_GetSource;
+
+ /* When there is a checksum error and things get out of sync we have to manage to resync */
+ /* If doing a data call at the time, finding a 0x1e etc is really quite likely in the data stream */
+ /* Then all sorts of horrible things happen because the packet length etc is wrong... */
+ /* Therefore we test here for a destination of 0x0c and return to the top if it is not */
+ if (rx_byte!=FBUS_DEVICE_PC && strstr(GSM_Info->FBUSModels, "sniff")==NULL) {
+ RX_State=FBUS_RX_Sync;
+#ifdef DEBUG
+ fprintf(stdout,"The fbus stream is out of sync - expected 0x0c, got %2x\n",rx_byte);
+#endif
+ AppendLogText("SYNC\n",false);
+ }
+
+ break;
+
+ case FBUS_RX_GetSource:
+
+ MessageSource=rx_byte;
+ RX_State = FBUS_RX_GetType;
+
+ /* Source should be 0x00 */
+ if (rx_byte!=FBUS_DEVICE_PHONE && strstr(GSM_Info->FBUSModels, "sniff")==NULL) {
+ RX_State=FBUS_RX_Sync;
+#ifdef DEBUG
+ fprintf(stdout,"The fbus stream is out of sync - expected 0x00, got %2x\n",rx_byte);
+#endif
+ AppendLogText("SYNC\n",false);
+ }
+
+ break;
+
+ case FBUS_RX_GetType:
+
+ MessageType=rx_byte;
+
+ RX_State = FBUS_RX_GetLength1;
+
+ break;
+
+ case FBUS_RX_GetLength1:
+
+ MessageLength = 0;
+
+ RX_State = FBUS_RX_GetLength2;
+
+ break;
+
+ case FBUS_RX_GetLength2:
+
+ /* MW:Here are problems with conversion. For chars 0-127 it's OK, for
+ higher not (probably because rx_byte is char type) - improtant
+ for MBUS. So, I make it double and strange - generally it should be
+ more simple and make simple convert rx_byte into MessageLength */
+#if defined(__svr4__) || defined(__FreeBSD__)
+ if (rx_byte!=0) {
+ for (i=0;i<rx_byte;i++)
+ MessageLength=MessageLength++;
+ }
+#else
+ MessageLength = rx_byte;
+#endif
+
+ RX_State = FBUS_RX_GetMessage;
+
+ break;
+
+ case FBUS_RX_GetMessage:
+
+ MessageBuffer[BufferCount] = rx_byte;
+ BufferCount ++;
+
+ if (BufferCount>FBUS_MAX_RECEIVE_LENGTH*6) {
+#ifdef DEBUG
+ fprintf(stdout, "FB61: Message buffer overun - resetting\n");
+#endif
+ AppendLogText("OVERUN\n",false);
+ RX_Multiple=false;
+ RX_State = FBUS_RX_Sync;
+ break;
+ }
+
+ /* If this is the last byte, it's the checksum. */
+ if (BufferCount == MessageLength+(MessageLength%2)+2) {
+
+ /* Is the checksum correct? */
+ if (checksum[0] == checksum[1]) {
+
+ if (RX_Multiple) {
+
+ if (MessageType==MultiMessageType) {
+
+ if (MessageLength+MultiMessageLength>FBUS_MAX_RECEIVE_LENGTH*6) {
+#ifdef DEBUG
+ fprintf(stdout, "FB61: Message buffer overun - resetting\n");
+#endif
+ AppendLogText("OVERUN\n",false);
+ RX_Multiple=false;
+ RX_State = FBUS_RX_Sync;
+ break;
+ }
+
+ /* We copy next part of multiframe message into special buffer */
+ for (i=0;i<MessageLength;i++) {
+ MultiMessageBuffer[i+MultiMessageLength]=MessageBuffer[i];
+ }
+ MultiMessageLength=MultiMessageLength+MessageLength-2;
+
+ FBUS_SendAck(MessageType, MessageBuffer[MessageLength-1] & 0x0f);
+
+ if ((MessageLength > 1) && (MessageBuffer[MessageLength-2] != 0x01))
+ {
+ } else {
+ for (i=0;i<MultiMessageLength+2;i++) {
+ MessageBuffer[i]=MultiMessageBuffer[i];
+ }
+ MessageLength=MultiMessageLength+2;
+ RX_Multiple=false;
+
+ /* Do not debug Ack and RLP frames to detail. */
+ if (MessageType != FBUS_FRTYPE_ACK && MessageType != 0xf1)
+ N61_RX_DisplayMessage();
+
+ GSM->DispatchMessage(MessageLength, MessageBuffer, MessageType);
+ }
+
+ } else {
+
+ /* We do not want to send ACK of ACKs and ACK of RLP frames. */
+ if (MessageType != FBUS_FRTYPE_ACK && MessageType != 0xf1) {
+ FBUS_SendAck(MessageType, MessageBuffer[MessageLength-1] & 0x0f);
+
+ if ((MessageLength > 1) && (MessageBuffer[MessageLength-2] != 0x01))
+ {
+#ifdef DEBUG
+ fprintf(stdout,_("Multiframe message in multiframe message !\n"));
+ fprintf(stdout,_("Please report it !\n"));
+#endif
+ RX_State = FBUS_RX_Sync;
+ }
+ }
+ }
+ } else {
+
+ /* We do not want to send ACK of ACKs and ACK of RLP frames. */
+ if (MessageType != FBUS_FRTYPE_ACK && MessageType != 0xf1) {
+ FBUS_SendAck(MessageType, MessageBuffer[MessageLength-1] & 0x0f);
+
+ if ((MessageLength > 1) && (MessageBuffer[MessageLength-2] != 0x01))
+ {
+ /* We copy previous part of multiframe message into special buffer */
+ RX_Multiple = true;
+ for (i=0;i<MessageLength-2;i++) {
+ MultiMessageBuffer[i]=MessageBuffer[i];
+ }
+ MultiMessageLength=MessageLength-2;
+ MultiMessageType=MessageType;
+ }
+ }
+
+ if (!RX_Multiple && MessageDestination!=FBUS_DEVICE_PHONE ) {
+ /* Do not debug Ack and RLP frames to detail. */
+ if (MessageType != FBUS_FRTYPE_ACK && MessageType != 0xf1)
+ N61_RX_DisplayMessage();
+
+ GSM->DispatchMessage(MessageLength, MessageBuffer, MessageType);
+ }
+
+#ifdef DEBUG
+ /* When make debug and message is to phone display it */
+ if (MessageDestination==FBUS_DEVICE_PHONE) {
+ for (i=MessageLength;i>=0;i--)
+ MessageBuffer[i+6]=MessageBuffer[i];
+ MessageBuffer[0]=FBUS_FRAME_ID;
+ MessageBuffer[1]=FBUS_DEVICE_PHONE;
+ MessageBuffer[2]=FBUS_DEVICE_PC;
+ MessageBuffer[3]=MessageType;
+ MessageBuffer[4]=0;
+ MessageBuffer[5]=MessageLength;
+ MessageLength=MessageLength+8;
+ if (MessageLength % 2) MessageLength++;
+ NULL_TX_DisplayMessage(MessageLength, MessageBuffer);
+ }
+#endif
+ }
+ } else {
+#ifdef DEBUG
+ fprintf(stdout, _("Bad checksum %02x (should be %02x), msg len=%i !\n"),checksum[0],checksum[1],MessageLength);
+#endif /* DEBUG */
+ AppendLogText("CHECKSUM\n",false);
+
+ /* Just to be sure! */
+ RX_Multiple=false;
+ }
+ RX_State = FBUS_RX_Sync;
+ }
+ break;
+ }
+
+#ifdef DEBUG
+ } else {
+ if (isprint(rx_byte))
+ fprintf(stdout, "[%02x%c]", rx_byte, rx_byte);
+ else
+ fprintf(stdout, "[%02x ]", rx_byte);
+
+ }
+#endif
+
+// }
+}
+
+/* Called by initialisation code to open comm port in asynchronous mode. */
+bool FBUS_OpenSerial(void)
+{
+ /* Uncomment, if want to test first method for DLR3 */
+// unsigned char req[3] = {"AT\r"};
+// unsigned char req2[5] = {"AT&F\r"};
+// unsigned char req3[13] = {"AT*NOKIAFBUS\r"};
+
+// GSM_Error error;
+
+// GSM_Information *GSMINFOCOPY;
+// GSM_Functions *GSMCOPY;
+
+ switch (CurrentConnectionType) {
+ case GCT_FBUS:
+
+#ifdef DEBUG
+ fprintf(stdout, _("Setting cable for FBUS communication...\n"));
+#endif /* DEBUG */
+
+ device_changespeed(115200);
+
+ /* Colin wrote:
+ The data suite cable has some electronics built into the connector. This of
+ course needs a power supply of some sorts to operate properly.
+
+ In this case power is drawn off the handshaking lines of the PC. DTR has to
+ be set and RTS have to be cleared, thus if you use a terminal program (that
+ does not set the handshaking lines to these conditions) you will get weird
+ results. It will not set them like this since if Request To Send (RTS) is
+ not set the other party will not send any data (in hardware handshaking)
+ and if DTS is not set (handshaking = none) the cable will not receive
+ power. */
+ /* clearing the RTS bit and setting the DTR bit*/
+ device_setdtrrts(1, 0);
+
+ break;
+ case GCT_DLR3:
+
+#ifdef DEBUG
+ fprintf(stdout, _("Setting DLR3 cable for FBUS communication...\n"));
+#endif /* DEBUG */
+
+ /* There are 2 ways to init DLR in FBUS: Here is first described by
+ Reuben Harris [reuben.harris@snowvalley.com] and used in Logo Manager,
+ 1. Firstly set the connection baud to 19200, DTR off, RTS off,
+ Parity on, one stop bit,
+ 2. Send "AT\r\n". The response should be "AT\r\n\r\nOK\r\n".
+ 3. Send "AT&F\r\n". The response should be "AT&F\r\n\r\nOK\r\n".
+ 4. Send "AT*NOKIAFBUS\r\n". The response should be
+ "AT*NOKIAFBUS\r\n\r\nOK\r\n".
+ 5. Set speed to 115200
+
+ This is one should be used by us, because seems to be compatible with more
+ phones. But we make something wrong and often phones don't want to start transmision */
+
+ /* Uncomment and test if want */
+// device_changespeed(19200);
+
+ /*leave RTS low, DTR low for duration of session.*/
+// device_setdtrrts(0, 0);
+
+ /* Making copy of pointers */
+// GSMCOPY = GSM;
+// GSMINFOCOPY =GSM_Info;
+
+ /* Set pointers to relevant addresses - new "AT" module here is required */
+// GSM = &Nat_Functions;
+// GSM_Info = &Nat_Information;
+
+ /* Note: We change Protocol inside function pointed by it.
+ That's why in FBUS_RX_StateMachine we must check it (changing
+ Protocol is not enough), This is for correct work and be sure... */
+// Protocol = &AT_Functions;
+
+// error=N6110_SendMessageSequence (50, &CurrentGetHWError, 3, 0x00, req);
+// if (error!=GE_NONE) return false;
+
+// error=N6110_SendMessageSequence (50, &CurrentGetHWError, 5, 0x00, req2);
+// if (error!=GE_NONE) return false;
+
+// error=N6110_SendMessageSequence (50, &CurrentGetHWError, 13, 0x00, req3);
+// if (error!=GE_NONE) return false;
+
+ /* Returning to old protocol */
+// Protocol = &FBUS_Functions;
+
+ /* Returning to old module */
+// GSM = GSMCOPY;
+// GSM_Info = GSMINFOCOPY;
+
+// device_changespeed(115200);
+
+ /* Second method for DLR3:
+ Used by some 7110 soft, but not compatible with some other
+ phones supporting DLR3 - 7160, NCP2.0
+ Used in this moment in mygnokii
+ */
+
+ device_changespeed(115200);
+
+ /*leave RTS low, DTR low for duration of session.*/
+ device_setdtrrts(0, 0);
+
+ usleep(100000);
+
+ CurrentConnectionType=GCT_FBUS;
+
+ break;
+ case GCT_Infrared:
+ /* It's more complicated and not done here */
+ break;
+
+ case GCT_Tekram:
+ /* It's more complicated and not done here */
+ break;
+
+ default:
+#ifdef DEBUG
+ fprintf(stdout,_("Wrong connection type for fbus module. Inform marcin-wiacek@topnet.pl about it\n"));
+#endif
+ break;
+ }
+
+ return (true);
+}
+
+/* Initialise variables and state machine. */
+GSM_Error FBUS_Initialise(char *port_device, char *initlength,
+ GSM_ConnectionType connection,
+ void (*rlp_callback)(RLP_F96Frame *frame))
+{
+
+ if (!StartConnection (port_device,false,connection))
+ return GE_INTERNALERROR;
+
+ CurrentConnectionType = connection;
+
+ if (FBUS_OpenSerial() != true) return GE_INTERNALERROR;
+
+ return (GE_NONE);
+}
git://git.jankratochvil.net / gnokii.git / blobdiff