si4432官方的程序

				/*				** ============================================================================				**				** FILE				**  main.c				**				** DESCRIPTION				**  This is the main file of the project.	    				**				** CREATED				**  Silicon Laboratories Hungary Ltd				**				** COPYRIGHT				**  Copyright 2008 Silicon Laboratories, Inc.  				**	http://www.silabs.com				**				** ============================================================================				*/																							/* ======================================================= *															 *						INCLUDE							   *											 				 * ======================================================= */				#include "S8051.h"				#include "uart.h"				#include "Si4432.h"				#include "EZLink_Modem_cmd.h"															/* ======================================================= *															 *						GLOBAL VARIABLE					   *											 				 * ======================================================= */												extern idata uint8 BufChar;			//character counter				extern idata uint8 o_ptr;			//circular buffer output pointer				extern idata uint8 i_ptr;			//circular buffer input pointer				xdata uint8 rf_ch;					//frequency channel				xdata uint8 rf_pwr;					//RF output power				xdata uint8 rf_dr;					//datarate												xdata uint8 opmode;					//command or data mode				xdata uint8 mode;					//normal or compatible mode								xdata uint8 swit_30ms;				xdata uint8 rs232_timer;				xdata uint8 rs232_timeout;				extern xdata uint8 uart_ch_sent;																								/* ============================================================ *												 *						Function PROTOTYPES						* 												 * ============================================================ */				void Hw_Init(void);				INTERRUPT_PROTO (UART0_ISR, INTERRUPT_UART0);					INTERRUPT_PROTO (TIMER2_ISR, INTERRUPT_TIMER2);												/* ============================================================ *												 *							MAIN PROGRAM						* 												 * ============================================================ */				void main(void)																			{					xdata uint8 packet[MAX_PAYLOAD+1], length;		//Transmit packet 					xdata uint8 TxPacketPtr;						//Transmit packet pointer																			BufChar	= 0;							i_ptr = 0;									o_ptr = 0;					opmode = 0;				//default operation mode(command mode)					mode = 0;				//default normal mode														TxPacketPtr = 0;					rs232_timer = 0;					rs232_timeout = 30;		//timeout 1 s					Hw_Init();					//initialize the MCU periperals					if( PB_PIN == 0)		//if the button pushed after reset, the demo would run in compatible mode					{						TR_LED_PIN = 1;						mode = 1;						while( PB_PIN == 0); 											}					TR_LED_PIN = 0;															printAbout();			//print the FW information to UART*/										rf_pwr = 7;							//default output power					rf_ch = 0;							//default frequency channel									if (mode == 0)					{							rf_dr = 2;							//default datarate 9.6 kbps					}					else 					{						rf_dr = 0;							//default datarate 9.6 kbps					}									RfInitHw();				//initialize the radio*/					RFIdle();					RFReceive();			//receive enable					CMD_init();						while(1)														//main loop					{										// Synchronized routines:				        //==========================================================				        //---- 10ms soft interrupt area:				        						 while(swit_30ms)				         {				           	--swit_30ms;				        	if(rs232_timer && rs232_timer 				         if (CMD_PIN == 1)							{									opmode = 1;												//data mode							}							else							{								opmode = 0;												//command mode							}				 					         }				      	// NOT synchronized routines:				      	//==========================================================						//==========================================================																														if (BufChar)												//if there is any char in the uart buffer						{							if (opmode == 0)										//command mode							{								CmdExec(ReadBuffer());							}							else													//data mode							{												if (TxPacketPtr < MAX_PAYLOAD)								{									packet[TxPacketPtr++]= ReadBuffer();				//save the received byte								}												if ((TxPacketPtr >= MAX_PAYLOAD)||(packet[TxPacketPtr-1] == MESSAGE_END))								{									TR_LED_PIN = 1;									RFIdle();									TxFIFOReset();									RFTransmit(&packet[0],TxPacketPtr);									TxPacketPtr = 0;									rs232_timer = 0;									TR_LED_PIN = 0;									RFIdle();									RxFIFOReset();									RFReceive();				//enable the receiver chain again								}							}							}													if(opmode == 1)						{							if(rs232_timer > rs232_timeout)							{								TR_LED_PIN = 1;								RFIdle();								TxFIFOReset();								RFTransmit(&packet[0],TxPacketPtr);								TxPacketPtr = 0;								rs232_timer = 0;								TR_LED_PIN = 0;								RFIdle();								RxFIFOReset();								RFReceive();				//enable the receiver chain again							}												}												/* ================================================== */											/* 				Linktest button pressed				  */											/* ================================================== */												switch( RFPacketReceived(&packet[0], &length) )						{								case RF_PACKET_RECEIVED:									//blink RX LED									RC_LED_PIN = 1;									//print packet content									packet[length] = 0;									printf("%s", &packet[0]);									//wait a bit for showing the LED a bit longer									delay_ms(50);									//release RX LED									RC_LED_PIN = 0;									//check whether ACK needs to be sent or not									if( memcmp(&packet[0], "Link ??", 7) == 0 )									{										//send ACK										TR_LED_PIN = 1;										//send a packet										length = 9;										strcpy(&packet[0],"Link OK\r\n");										RFIdle();										TxFIFOReset();										RFTransmit(&packet[0],length);										//wait a bit for showing the LED a bit longer										delay_ms(50);										//releaze the LED										TR_LED_PIN = 0;									}																	RFIdle();									RxFIFOReset();									RFReceive();								break;												case RF_NO_PACKET:									if( PB_PIN == 0 )									{//push button is pressed -> send a packet										//wait for releaze the button										while(PB_PIN == 0);										//blink the LED										TR_LED_PIN = 1;										//send a packet										length = 9;										strcpy(&packet[0],"Link ??\r\n");										RFIdle();										TxFIFOReset();										RFTransmit(&packet[0],length);										//wait a bit for showing the LED a bit longer										delay_ms(50);										//releaze the LED										TR_LED_PIN = 0;										//start receiving										RFIdle();										RxFIFOReset();										RFReceive();									}								break;												case RF_CRC_ERROR:								default:									//restart RX									RFIdle();									RxFIFOReset();									RFReceive();								break;						}									}				}																				/* ================================================ */												/*						UART0 ISR					*/												/* ================================================ */								INTERRUPT(UART0_ISR, INTERRUPT_UART0) 				{									if( RI0 == 1 )													//check RX interrupt					{																		UartRxISR();												//call the UART RX interrupt handler						RI0 = 0;													//clear IT Flag					}										if( TI0 == 1)					{						uart_ch_sent = 1;						TI0 = 0;					}									}												INTERRUPT(TIMER2_ISR, INTERRUPT_TIMER2)				{									++swit_30ms;  					TF2H = 0;				}																/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++				  +				  + FUNCTION NAME:  void Init(void)				  +				  + DESCRIPTION:    This function configures the HW  				  +				  +	INPUT:			None				  +				  + RETURN:         None				  +				  + NOTES:          None				  +				  +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/				void Hw_Init(void)				{					DisableGlobalIt(); 				    /*Disable the Watchdog Timer*/					PCA0MD &= ~0x40;                    				   PCA0MD = 0x00;												// Disable interrupts 										/* Internal Oscillator SYSCLK  (24.5 MHz)*/					OSCICN    = 0x8F;				   FLSCL     = 0x40;				   CLKSEL    = 0x00;										/*Initialize I/O ports*/					P0MDIN    = 0xFF;									   P1MDIN    = 0xFF;  					P2MDIN	  = 0xFF;					P0MDOUT   = 0x12;					P1MDOUT   = 0x4D;										   P2MDOUT   = 0x01;													P0     	  |= 0xE0;                      //Set P0 inputs					P1		  |= 0x12;						//Set P1 inputs								 				      						SFRPAGE  = 0x0F;					P0DRV	  	= 0x12;					   P1DRV    = 0x4D;				   P2DRV    = 0x01;				    					SFRPAGE  = 0x00;					XBR0     = 0x01;				   XBR1     = 0x40;				   XBR2     = 0x40;																		//Initialize SPI					SetHwMasterSpi();					//Initialize Uart					UartInit();					//Initialize Timer2					Timer2Init();											TR_LED_PIN = 1;					delay_ms(5);					RC_LED_PIN = 1;					delay_ms(5);					TR_LED_PIN = 0;					delay_ms(5);					RC_LED_PIN = 0;										EnableGlobalIt();				}