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/* |
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$Id: fbus-phonet.c,v 1.40 2005/04/20 20:43:32 pkot Exp $ |
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G N O K I I |
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A Linux/Unix toolset and driver for the mobile phones. |
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|
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This file is part of gnokii. |
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|
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Gnokii is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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Gnokii is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with gnokii; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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|
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Copyright (C) 1999-2000 Hugh Blemings & Pavel JanÃk ml. |
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Copyright (C) 2000-2001 Chris Kemp |
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Copyright (C) 2001-2004 Pawel Kot |
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Copyright (C) 2001 Manfred Jonsson, Martin Jancar |
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Copyright (C) 2002 Ladis Michl |
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Copyright (C) 2002-2003 BORBELY Zoltan |
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|
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This file provides an API for accessing functions via fbus over irda. |
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See README for more details on supported mobile phones. |
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|
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The various routines are called phonet_(whatever). |
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*/ |
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|
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/* System header files */ |
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#include <stdio.h> |
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#include <string.h> |
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#include <stdlib.h> |
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|
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/* Various header file */ |
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#include "config.h" |
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#include "compat.h" |
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#include "misc.h" |
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#include "gnokii.h" |
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#include "device.h" |
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#include "links/fbus-phonet.h" |
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#include "links/fbus.h" |
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#include "gnokii-internal.h" |
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|
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static void phonet_rx_statemachine(unsigned char rx_byte, struct gn_statemachine *state); |
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static gn_error phonet_send_message(unsigned int messagesize, unsigned char messagetype, unsigned char *message, struct gn_statemachine *state); |
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|
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|
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#define FBUSINST(s) (*((phonet_incoming_message **)(&(s)->link.link_instance))) |
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|
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#define FBUS_PHONET_BLUETOOTH_INITSEQ 0xd0, 0x00, 0x01 |
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|
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/*--------------------------------------------*/ |
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|
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static bool phonet_open(struct gn_statemachine *state) |
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{ |
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int result, i, n, total = 0; |
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unsigned char init_sequence[] = { FBUS_PHONET_BLUETOOTH_FRAME_ID, |
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FBUS_DEVICE_PHONE, |
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FBUS_PHONET_BLUETOOTH_DEVICE_PC, |
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FBUS_PHONET_BLUETOOTH_INITSEQ, |
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0x04}; |
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unsigned char init_resp[7]; |
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unsigned char init_pattern[7] = { FBUS_PHONET_BLUETOOTH_FRAME_ID, |
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FBUS_PHONET_BLUETOOTH_DEVICE_PC, |
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FBUS_DEVICE_PHONE, |
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FBUS_PHONET_BLUETOOTH_INITSEQ, |
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0x05}; |
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|
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if (!state) |
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return false; |
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|
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memset(&init_resp, 0, 7); |
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|
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/* Open device. */ |
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result = device_open(state->config.port_device, false, false, false, |
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state->config.connection_type, state); |
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|
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if (!result) { |
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perror(_("Couldn't open PHONET device")); |
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return false; |
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} |
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|
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if (state->config.connection_type == GN_CT_Bluetooth) { |
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device_write(&init_sequence, 7, state); |
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while (total < 7) { |
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n = device_read(&init_resp + total, 7 - total, state); |
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total += n; |
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} |
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for (i = 0; i < n; i++) { |
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if (init_resp[i] != init_pattern[i]) { |
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dprintf("Incorrect byte in the answer\n"); |
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return false; |
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} |
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} |
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} |
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|
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return true; |
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} |
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|
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/* RX_State machine for receive handling. Called once for each character |
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received from the phone. */ |
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static void phonet_rx_statemachine(unsigned char rx_byte, struct gn_statemachine *state) |
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{ |
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phonet_incoming_message *i = FBUSINST(state); |
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|
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/* FIXME: perhaps we should return something here */ |
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if (!i) |
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return; |
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|
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switch (i->state) { |
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case FBUS_RX_Sync: |
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if (rx_byte == FBUS_PHONET_FRAME_ID || |
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rx_byte == FBUS_PHONET_BLUETOOTH_FRAME_ID || |
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rx_byte == FBUS_PHONET_DKU2_FRAME_ID) { |
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i->state = FBUS_RX_GetDestination; |
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} |
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break; |
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|
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case FBUS_RX_GetDestination: |
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|
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i->message_destination = rx_byte; |
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i->state = FBUS_RX_GetSource; |
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|
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if (rx_byte != FBUS_DEVICE_PC && |
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rx_byte != FBUS_PHONET_DKU2_DEVICE_PC && |
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rx_byte != FBUS_PHONET_BLUETOOTH_DEVICE_PC) { |
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i->state = FBUS_RX_Sync; |
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dprintf("The fbus stream is out of sync - expected 0x0c, got 0x%02x\n", rx_byte); |
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} |
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break; |
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|
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case FBUS_RX_GetSource: |
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|
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i->message_source = rx_byte; |
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i->state = FBUS_RX_GetType; |
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|
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if (rx_byte != FBUS_DEVICE_PHONE) { |
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i->state = FBUS_RX_Sync; |
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dprintf("The fbus stream is out of sync - expected 0x00, got 0x%02x\n", rx_byte); |
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} |
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|
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break; |
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|
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case FBUS_RX_GetType: |
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|
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i->message_type = rx_byte; |
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i->state = FBUS_RX_GetLength1; |
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|
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break; |
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|
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case FBUS_RX_GetLength1: |
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|
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i->message_length = rx_byte << 8; |
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i->state = FBUS_RX_GetLength2; |
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break; |
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|
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case FBUS_RX_GetLength2: |
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|
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i->message_length = i->message_length + rx_byte; |
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i->state = FBUS_RX_GetMessage; |
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i->buffer_count = 0; |
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break; |
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|
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case FBUS_RX_GetMessage: |
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i->message_buffer[i->buffer_count] = rx_byte; |
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i->buffer_count++; |
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|
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if (i->buffer_count > PHONET_FRAME_MAX_LENGTH) { |
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dprintf("PHONET: Message buffer overun - resetting\n"); |
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i->state = FBUS_RX_Sync; |
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break; |
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} |
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|
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/* Is that it? */ |
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|
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if (i->buffer_count == i->message_length) { |
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sm_incoming_function(i->message_type, i->message_buffer, i->message_length, state); |
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i->state = FBUS_RX_Sync; |
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} |
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break; |
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default: |
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i->state = FBUS_RX_Sync; |
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break; |
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} |
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} |
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|
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|
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/* This is the main loop function which must be called regularly */ |
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/* timeout can be used to make it 'busy' or not */ |
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static gn_error phonet_loop(struct timeval *timeout, struct gn_statemachine *state) |
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{ |
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gn_error error = GN_ERR_INTERNALERROR; |
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unsigned char buffer[255]; |
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int count, res; |
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res = device_select(timeout, state); |
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if (res > 0) { |
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res = device_read(buffer, 255, state); |
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for (count = 0; count < res; count++) { |
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phonet_rx_statemachine(buffer[count], state); |
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} |
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if (res > 0) { |
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error = GN_ERR_NONE; /* This traps errors from device_read */ |
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} |
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} else if (!res) { |
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error = GN_ERR_TIMEOUT; |
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} |
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return error; |
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} |
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|
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/* Main function to send an fbus message */ |
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static gn_error phonet_send_message(unsigned int messagesize, unsigned char messagetype, unsigned char *message, struct gn_statemachine *state) |
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{ |
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|
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u8 out_buffer[PHONET_TRANSMIT_MAX_LENGTH + 5]; |
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int current = 0; |
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int total, sent; |
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|
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if (!state) |
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return GN_ERR_FAILED; |
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|
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/* FIXME - we should check for the message length ... */ |
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|
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/* Now construct the message header. */ |
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if (state->config.connection_type == GN_CT_Bluetooth) { |
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out_buffer[current++] = FBUS_PHONET_BLUETOOTH_FRAME_ID; |
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out_buffer[current++] = FBUS_DEVICE_PHONE; |
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out_buffer[current++] = FBUS_PHONET_BLUETOOTH_DEVICE_PC; |
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} else if (state->config.connection_type == GN_CT_DKU2) { |
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out_buffer[current++] = FBUS_PHONET_DKU2_FRAME_ID; |
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out_buffer[current++] = FBUS_DEVICE_PHONE; |
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out_buffer[current++] = FBUS_PHONET_DKU2_DEVICE_PC; |
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} else { |
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out_buffer[current++] = FBUS_PHONET_FRAME_ID; |
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out_buffer[current++] = FBUS_DEVICE_PHONE; /* Destination */ |
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out_buffer[current++] = FBUS_DEVICE_PC; /* Source */ |
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} |
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|
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out_buffer[current++] = messagetype; /* Type */ |
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out_buffer[current++] = (messagesize & 0xff00) >> 8; |
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out_buffer[current++] = (messagesize & 0x00ff); |
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|
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/* Copy in data if any. */ |
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|
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if (messagesize > 0) { |
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memcpy(out_buffer + current, message, messagesize); |
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current += messagesize; |
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} |
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|
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/* Send it out... */ |
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|
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total = current; |
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current = 0; |
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sent = 0; |
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do { |
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sent = device_write(out_buffer + current, total - current, state); |
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if (sent < 0) return GN_ERR_FAILED; |
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else current += sent; |
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} while (current < total); |
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|
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sm_incoming_acknowledge(state); |
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|
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return GN_ERR_NONE; |
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} |
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|
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/* Initialise variables and start the link */ |
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gn_error phonet_initialise(struct gn_statemachine *state) |
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{ |
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gn_error error = GN_ERR_FAILED; |
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|
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if (!state) |
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return error; |
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|
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/* Fill in the link functions */ |
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state->link.loop = &phonet_loop; |
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state->link.send_message = &phonet_send_message; |
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|
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if ((FBUSINST(state) = calloc(1, sizeof(phonet_incoming_message))) == NULL) |
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return GN_ERR_MEMORYFULL; |
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|
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switch (state->config.connection_type) { |
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case GN_CT_Infrared: |
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case GN_CT_Irda: |
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case GN_CT_DKU2: |
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case GN_CT_Bluetooth: |
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if (phonet_open(state) == true) |
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error = GN_ERR_NONE; |
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break; |
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default: |
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break; |
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} |
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if (error != GN_ERR_NONE) { |
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free(FBUSINST(state)); |
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FBUSINST(state) = NULL; |
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return error; |
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} |
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|
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/* Init variables */ |
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FBUSINST(state)->state = FBUS_RX_Sync; |
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FBUSINST(state)->buffer_count = 0; |
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|
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return error; |
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} |