gsmqueue.h

00001 #ifndef GSMQUEUE_H
00002 #define GSMQUEUE_H
00003 
00004 /* gsmqueue.h
00005  * Contains functions to read from the DMA buffer in a queue fashion
00006  */
00007 
00008 //Memory block of char size alocated for DMA
00009 #define BUFFER_LENGTH 2000
00010 #define MAX_SMS_LENGTH 700    //Absolute SMS length max = 900 (let's do 700 to be safe)
00011 #define QUEUETAIL (char*)DMA_TCD0_DADDR
00012 
00013 
00014 //Public functions ------------------------------------------------------------------------------
00015 //Initialize variables 
00016 void queueInit();
00017 
00018 //Send gsm a command
00019 void sendCommand(char* sPtr);
00020 
00021 //Return 1 if queue has data and the GSM is done transmitting its response
00022 bool queueHasResponse();
00023 
00024 //Find an occurrence of the given string in the buffer.
00025 //If advanceQueueHead is true, advance queueHead just until a matching string is found.
00026 bool findInQueue(char* str, bool advanceQueueHead);
00027 
00028 //Parse through characters until first integer is found
00029 int parseInt();
00030 
00031 //Print queue elements
00032 void printQueue();   //for debugging
00033 
00034 
00035 //Internal functions ------------------------------------------------------------------------------
00036 //Get the GSM DMA idle bit (if 1, indicates we aren't in the process of receiving a response)
00037 bool getGSMIdleBit();
00038 
00039 //Returns true if the character is numeric
00040 bool isNumeric(char* qPos);
00041 
00042 //Increment queue position by 1 (Note: this function is only used by gsmqueue.cpp)
00043 char* incrementIndex(char* pointerToIncrement);
00044 
00045 //Increment queue position by n (Note: this function is only used by gsmqueue.cpp)
00046 char* incrementIndex(char* pointerToIncrement, int n);
00047 
00048 //Get size of the queue from reference point of tail parameter
00049 int queueSize(char* tail);
00050 
00051 //Clear queue (Note: this function is only used by gsmqueue.cpp)
00052 void flushQueue();
00053 
00054 #endif