DataComm.h

00001 //data comm functions
00002 //serial communication protocol
00003 
00004 #ifndef DATACOMM_H
00005 #define DATACOMM_H
00006 
00007 #define PREAMBLE 0x7E
00008 #define POSTAMBLE 0x7F
00009 #define MAX 100
00010 
00011 #include "mbed.h"
00012 #include "platform.h"
00013 #include "gpio_api.h"
00014 
00015 class DataComm {
00016 
00017     public:
00018         //initialize signal input/output pins
00019         void setClockOut(PinName pin);
00020         void setClockIn(PinName pin);
00021         void setSerialOut(PinName pin);
00022         void setSerialIn(PinName pin);
00023         //listen for incoming preamble        
00024         void listen();
00025         //set clock speed
00026         void setClock(int clock);
00027         //send preamble
00028         void initiate_connection();
00029         void send_data(char data[], int size);
00030         char* receive_data();
00031         //send postamble
00032         void close_connection();
00033     
00034     
00035     
00036     protected:
00037         //gpio input/output pins
00038         gpio_t clock_out;
00039         gpio_t clock_in;        
00040         gpio_t serial_out;
00041         gpio_t serial_in;
00042         //clock speed and skew
00043         int clock_time;
00044         int skew_time;
00045         //timer for handling clock and skew
00046         Timer t;     
00047 };
00048 
00049 #endif