config.c

基于跳频的音频连接系统设计（Mono Audio Link Using Frequency Hopping）及源代码

 /******************************************************************************************************
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 *      ***        ***                                                                                 *
 *      ***   +++   ***                                                                                *
 *      ***   + +   ***                                                                                *
 *      ***   +            			            	MCU and audio configuration module                 *
 *      ***   + +   ***                                                                                *
 *      ***   +++   ***                                                                                *
 *      ***        ***                                                                                 *
 *       ************                                                                                  *
 *        **********                                                                                   *
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 *******************************************************************************************************
 *                                                                                                   *
 *******************************************************************************************************
 * Compiler: Keil C51                                                                                  *
 * Target platform:  8051F005                                                                          *
 *******************************************************************************************************
 * Revision history:   																				   *
 * Initial release, HKI, 01.08.2004    			                                                       *
 ******************************************************************************************************/

#pragma REGISTERBANK(0)

#include <Cinclude.h>

 /****************************************************************************************************** 
 * 								MCU Setup  (generated by Cygnal Config)              		           *
 ******************************************************************************************************/


void mcuConfig (void) {

    UINT8 n = 0;	//Crystal config wait loop

 
 /*****************************************	Watchdog Timer Configuration ******************************/

// WDTCN.[7:0]: WDT Control
//   Writing 0xA5 enables and reloads the WDT.
//   Writing 0xDE followed within 4 clocks by 0xAD disables the WDT
//   Writing 0xFF locks out disable feature.
//
// WDTCN.[2:0]: WDT timer interval bits
//   NOTE! When writing interval bits, bit 7 must be a 0.
//
//  Bit 2 | Bit 1 | Bit 0
//------------------------     
//    1   |   1   |   1      Timeout interval = 1048576 x Tsysclk
//    1   |   1   |   0      Timeout interval =  262144 x Tsysclk
//    1   |   0   |   1      Timeout interval =   65636 x Tsysclk
//    1   |   0   |   0      Timeout interval =   16384 x Tsysclk
//    0   |   1   |   1      Timeout interval =    4096 x Tsysclk
//    0   |   1   |   0      Timeout interval =    1024 x Tsysclk
//    0   |   0   |   1      Timeout interval =     256 x Tsysclk
//    0   |   0   |   0      Timeout interval = 	 64 x Tsysclk
// 
//------------------------

	WDTCN = 0x07;	// Watchdog Timer Control Register
    WDTCN = 0xDE;   // Disable WDT
    WDTCN = 0xAD;
    WDTCN = 0xFF;   // Disable WDT Lockout


 /************************************ CROSSBAR REGISTER CONFIGURATION ********************************/

	XBR0 = 0x03;	// XBAR0: Initial Reset Value
	XBR1 = 0x94;	// XBAR1: Initial Reset Value
	XBR2 = 0x40;	// XBAR2: Initial Reset Value

    // Port configuration (1 = Push Pull Output)
	PRT0CF = 0x14;   // Output configuration for P0 
	PRT1CF = 0x61;   // Output configuration for P1 
	PRT2CF = 0xFF;   // Output configuration for P2
	if (!M_MASTER) { // Output configuration for P3
		PRT3CF = 0x9F; 
	} else {
		PRT3CF = 0x9E;  // with CRC_OK: 0x8E, without 0x8F
	} 


	// Port pinout description
	
		// Port 0
		// P0.0 = SMBus SDA       
		// P0.1 = SMBus SCL       
		// P0.2 = SPI Bus SCK     
		// P0.3 = SPI Bus MISO    
		// P0.4 = SPI Bus MOSI    
		// P0.5 = SPI Bus NSS     
		// P0.6 = /INT0           
		// P0.7 = /INT1           

		// Port 1
		// P1.0 = M_SYSCLK          
		// P1.1 = A_LRCK          
		// P1.2 = A_BCLK/16          
		// P1.3 = FIFO       
		// P1.4 = PKT     
		// P1.5 = R_TX       
		// P1.6 = R_RX         
		// P1.7 = R_GIO1          
					
		// Port 2 (A_PDATA)		
		// P2.0 = GP I/O          
		// P2.1 = GP I/O         
		// P2.2 = GP I/O         
		// P2.3 = GP I/O          
		// P2.4 = GP I/O          
		// P2.5 = GP I/O          
		// P2.6 = GP I/O         
		// P2.7 = GP I/O          

		// Port 3		
		// P3.0 = R_GIO6         
		// P3.1 = /M_SPI_CS         
		// P3.2 = M_BLED      
		// P3.3 = A_OE4094        
		// P3.4 = /S_RST        
		// P3.5 = /M_MASTER        
		// P3.6 = M_BTN     
		// P3.7 = M_GLED        



 /********************************* Comparators Register Configuration *********************************/


// Bit 7  | Bit 6  | Bit 5  | Bit 4  | Bit 3 | Bit 2 | Bit 1 | Bit 0
//------------------------------------------------------------------     
//  R/W	  |    R   |  R/W   |  R/W   |  R/W  |  R/W  |  R/W  |  R/W
//------------------------------------------------------------------
// Enable | Output | Rising | Falling|  Positive     |  Negative    
//        | State  | Edge   | Edge   |  Hysterisis   |  Hysterisis    
//        | Flag   | Int.   | Int.   |  00: Disable  |  00: Disable
//        |        | Flag   | Flag   |  01:  5mV     |  01:  5mV  
//        |        |        |        |  10: 10mV     |  10: 10mV
//        |        |        |        |  11: 20mV     |  11: 20mV 
// ----------------------------------------------------------------

	CPT0CN = 0x00;	// Comparator 0 Control Register
	CPT1CN = 0x00;	// Comparator 1 Control Register

 /***************************************** Oscillator Configuration ***********************************/

	OSCXCN = 0x67;	// EXTERNAL Oscillator Control Register	
    for (n = 0; n < 255; n++) ;            // wait for osc to start
    while ( (OSCXCN & 0x80) == 0 );        // wait for xtal to stabilize

	OSCICN = 0x08;	// Internal Oscillator Control Register - disable internal

 /********************************* Reference Control Register Configuration ***************************/

	REF0CN = 0x00;	// Reference Control Register

 /***************************************** SPI Configuration ******************************************/

	SPI0CN = 0x00;	// SPI Control Register
	SPI0CFG = 0x00;	// SPI Configuration Register
	SPI0CKR = 0x00;	// SPI Clock Rate Register
    SPI0CN |= 0x01;

 /***************************************** DAC Configuration ******************************************/

	DAC0CN = 0x00;	// DAC0 Control Register
	DAC0L = 0x00;	// DAC0 Low Byte Register
	DAC0H = 0x00;	// DAC0 High Byte Register

	DAC1CN = 0x00;	// DAC1 Control Register
	DAC1L = 0x00;	// DAC1 Low Byte Register
	DAC1H = 0x00;	// DAC1 High Byte Register

 /***************************************** UART Configuration *****************************************/

	SCON = 0x00;		// Serial Port Control Register
	PCON = 0x00;		// Power Control Register
	
 /***************************************** SMBus Configuration ****************************************/

	SMB0CN = 0x40;	// SMBus Control Register
	SMB0ADR = 0x00;	// SMBus Address Register
	SMB0CR = 0x00;	// SMBus Clock Rate Register

 /***************************************** PCA Configuration ******************************************/

	PCA0MD = 0x00;	    // PCA Mode Register
	PCA0CN = 0x00;	    // PCA Control Register
    PCA0H = 0x00;       // PCA Counter/Timer High Byte	
    PCA0L = 0x00;       // PCA Counter/Timer Low Byte
	

	//Module 0
	PCA0CPM0 = 0x00;	// PCA Capture/Compare Register 0
	PCA0CPL0 = 0x00;	// PCA Counter/Timer Low Byte
	PCA0CPH0 = 0x00;	// PCA Counter/Timer High Byte

	//Module 1
	PCA0CPM1 = 0x00;	// PCA Capture/Compare Register 1
	PCA0CPL1 = 0x00;	// PCA Counter/Timer Low Byte
	PCA0CPH1 = 0x00;	// PCA Counter/Timer High Byte

	//Module 2
	PCA0CPM2 = 0x00;	// PCA Capture/Compare Register 2
	PCA0CPL2 = 0x00;	// PCA Counter/Timer Low Byte
	PCA0CPH2 = 0x00;	// PCA Counter/Timer High Byte

	//Module 3
	PCA0CPM3 = 0x00;	// PCA Capture/Compare Register 3
	PCA0CPL3 = 0x00;	// PCA Counter/Timer Low Byte
	PCA0CPH3 = 0x00;	// PCA Counter/Timer High Byte

	//Module 4
	PCA0CPM4 = 0x00;	// PCA Capture/Compare Register 4
	PCA0CPL4 = 0x00;	// PCA Counter/Timer Low Byte
	PCA0CPH4 = 0x00;	// PCA Counter/Timer High Byte

 /***************************************** ADC Configuration ******************************************/

	AMX0CF = 0x60;	// AMUX Configuration Register
	AMX0SL = 0x00;	// AMUX Channel Select Register
	ADC0CF = 0x00;	// ADC Configuration Register
	ADC0CN = 0x00;	// ADC Control Register