root / trunk / code / projects / libwireless / lib / wl_error_group.c @ 346
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/**
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* Copyright (c) 2007 Colony Project
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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**/
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/**
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* @file wl_error_group.h
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* @brief Error Packets
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*
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* A wireless group for sending error packets.
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*
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* @author Brian Coltin, Colony Project, CMU Robotics Club
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**/
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#include "wl_error_group.h" |
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#include <wireless.h> |
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#include <wl_defs.h> |
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#include <stdio.h> |
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#include <string.h> |
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void wl_error_response_receive(int frame, int received); |
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void wl_error_handle_receive(char type, int source, unsigned char* packet, |
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int length);
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PacketGroupHandler wl_error_handler = |
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{WL_ERROR_GROUP, NULL,
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wl_error_response_receive, wl_error_handle_receive, NULL};
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void wl_error_response_receive(int frame, int received) |
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{ |
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WL_DEBUG_PRINT("Response received.\r\n");
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if (!received)
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{ |
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WL_DEBUG_PRINT("FAILED.\r\n");
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} |
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} |
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/**
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* Register this packet group with the wireless library.
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* This function must be called before any other wl_error
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* function.
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**/
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void wl_error_register(void) |
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{ |
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wl_register_packet_group(&wl_error_handler); |
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} |
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/**
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* Unregister this packet group with the wireless library.
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* This function must be called after wl_error_register.
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*
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* @see wl_error_register
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**/
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void wl_error_unregister(void) |
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{ |
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wl_unregister_packet_group(&wl_error_handler); |
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} |
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/**
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* Handles receiving an error packet.
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*
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* @param type the packet type
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* @param source the 16-bit address of the packet's sender
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* @param packet the packet data
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* @param length the length in bytes of the packet
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**/
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void wl_error_handle_receive(char type, int source, unsigned char* packet, |
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int length)
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{ |
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switch (type)
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{ |
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case WL_ERROR_STRING_TYPE:
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if (packet[length - 1] != 0) |
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{ |
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WL_DEBUG_PRINT( |
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"Error packet string should be null terminated.\r\n");
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break;
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} |
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WL_DEBUG_PRINT("Error packet received from robot ");
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WL_DEBUG_PRINT_INT(source); |
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WL_DEBUG_PRINT(":\r\n");
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WL_DEBUG_PRINT((char*)packet);
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WL_DEBUG_PRINT("\r\n");
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break;
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default:
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WL_DEBUG_PRINT("Error packet of unknown type received.\r\n");
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break;
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} |
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} |
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/**
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* Send an error message as a string.
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*
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* @param str the error message to send
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**/
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void wl_error_send_string(char* str) |
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{ |
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wl_send_global_packet(WL_ERROR_GROUP, WL_ERROR_STRING_TYPE, |
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str, strlen(str) + 1, 1); |
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} |
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