uart.h

本程序用systemC仿真UART的功能

#include "systemc.h"
#include "uart_if.h"
#include "uart_trx_if.h"
#include "../pserial/send_module.h"
#include "stdio.h"
#include "../pserial/uart_gloabl_var.h"
class uart
: public uart_if
, public uart_trx_if
, public sc_module
{  
public:
	sc_port< uart_trx_if >	uart_txport;
 //	sc_port< interrupt_if>  uart_interrrup;	
	//implementation of uart_if
	void uart_action(unsigned int x_count);
	void uartrw_rw(unsigned int address,unsigned int *data,int rw);

	//implementation of uart_trx_if
	unsigned int txbit(bool tb, int start);

	//member functions
	unsigned int evenparity(unsigned int txshifter);
	unsigned int oddparity(unsigned int txshifter);
	unsigned int force0(unsigned int txshifter);
	unsigned int force1(unsigned int txshifter);
	unsigned int stb(unsigned int txshifter);
	unsigned int evenparity_rx(unsigned int b);
	unsigned int oddparity_rx(unsigned int rxshifter);
	unsigned int parity_error(unsigned int a);

	//process
	void receive_action();
//	SC_HAS_PROCESS(Receive_module);
	SC_HAS_PROCESS(uart);
	uart(sc_module_name name_)
		: sc_module(name_)
	{  	
		SC_THREAD(receive_action);

		int i;
		rxshifter=0;
		rx_count=1;
		tx_count=0;
		TxFifoCount=0;
		RxFifoCount=0;
		shifting=0;
		count=0;
		head=0;
		rear=0;
		front=0;
		end=0;
	//	uart_counter = 0;

		ubrdiv =20;
		ulcon=0x28;
		ufcon= 0;//0x1;
		ufstat=0x20;
		for( i=0;i<16;i++)
		{ 
		t_buffer[i]=0;
		r_buffer[i]=0;

		}
		//for (i=0;i<6;i++)
		//	tmp[i]='a';
	//	cout<<"construct u "<<ubrdiv<<endl;
		init_uart();
	}
	
	
private:
		char sdata;	
                unsigned int t_buffer[16];
		unsigned int r_buffer[16];
		unsigned int tx_count;
		unsigned int rx_count;
		unsigned int TxFifoCount;
		unsigned int RxFifoCount;
		unsigned int count;
		unsigned int head;
		unsigned int rear;
		unsigned int front;
		unsigned int end;
		unsigned int stopbit;
		unsigned int datalength;
		unsigned int frame_length;    //length of frame
		int odd,even;
		int normal_mode,infra_red_mode;
		int fifo;
		int not_full,full,empty,not_empty;
		int pclk,bps,uclk;
	   
                int receive_normal_mode;
	        int trans_normal_mode;
		bool shifting;
		bool tb;
		int  start;
//	    unsigned int uart_counter;
		unsigned int txshifter,rxshifter;
		
		unsigned int uart_tx_bit;
		unsigned int uart_rx_bit;
		unsigned int rxbit;
		unsigned int rxstart;
	   
		//unsigend int uartR[11]
		unsigned int		ulcon;		//0x00
		unsigned int		ucon;		//0x04
		unsigned int		ufcon;		//0x08
	        unsigned int		umcon;		//0x0c
	        unsigned int		utrstat;	//0x10
	        unsigned int		uerstat;	//0x14
	        unsigned int		ufstat;		//0x18
	        unsigned int		umstat;		//0x1c
		 unsigned int		utxh;		//0x20
	        unsigned int		urxh;		//0x24
	        unsigned int		ubrdiv;		//0x28
		//char tmp[6];
	   
};