www.pudn.com > TCPmodbushy.rar > F34x_CP220.c

//----------------------------------------------------------------------------- 
// F34x_Init.c 
//----------------------------------------------------------------------------- 
// Copyright 2006 Silicon Laboratories, Inc. 
// http://www.silabs.com 
// 
// Program Description: 
//  
// Contains Initialization Routines for the F340. 
// 
// FID:             
// Target:         C8051F34x 
// Tool chain:     Keil C51 7.20 / Keil EVAL C51 
//                 Silicon Laboratories IDE version 2.72  
// Command Line:   See Readme.txt 
// Project Name:   CP220x_Ethernet_Routines 
// 
//  
// 
// Release 1.0 
//    -Initial Release (FB) 
//    -30 MAY 2006 
// 
//----------------------------------------------------------------------------- 
// Includes 
//----------------------------------------------------------------------------- 
#include "o:\sysdef.h" 
uchar data RcvedNum; 
//----------------------------------------------------------------------------- 
// CP220x_RST_Low 
//----------------------------------------------------------------------------- 
// 
// Drives the CP220x's Reset Pin Low. 
// 
void CP220x_RST_Low(void) 
{ 
	CP220_RST_PIN = 0;						// Set P1.0 Low 
} 
 
//----------------------------------------------------------------------------- 
// CP220x_RST_High 
//----------------------------------------------------------------------------- 
// 
// Allows the CP220x's Reset Pin to be pulled up. 
// 
// Waits until the reset pin rises. 
// 
void CP220x_RST_High(void) 
{ 
	CP220_RST_PIN = 1;						// Set P1.0 High 
 
	while(!CP220_RST_PIN); 
} 
 
 
//----------------------------------------------------------------------------- 
// AB4_RST_State 
//----------------------------------------------------------------------------- 
// 
// Returns the state of the AB4's reset pin. 
// 
uchar Get_RST_State(void) 
{ 
	char rst_pin_state; 
    
	rst_pin_state = CP220_RST_PIN;			// Get P1.0 State 
    
	return rst_pin_state; 
} 
 
/* according to Low_level_input, when read the packet only leave the five packet, open receved!  */ 
void INT0_ISR( void ) interrupt 0 using INT0SrvBank 
{ 
	uchar data interrupt_read; 
 
// Net Link Status Changed 
	interrupt_read = INT1; 
// if net cut 
	if( interrupt_read & LINKINT ) 
		RSTSRC |= 0x10; 
 
	interrupt_read = INT0; 
 
	if( interrupt_read & RXINT ) 
	{ 
		uchar data valid_bits; 
 
		RcvedNum = 0; 
		valid_bits = TLBVALID; 
		while( valid_bits ) 
		{ 
			RcvedNum++; 
			valid_bits &= ( valid_bits - 1 ); 
		} 
		if( RcvedNum >= 7 ) 
		{ 
			RXCN = RXINH; 
#ifdef TESTDEBUG 
test[2]++; 
#endif 
		} 
	} 
} 
 
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// End Of File 
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