f020config.c

多通道高速数据采集源程序

#include <C8051F020.h>	// Register definition file.
void config (void) 
{

int i = 0;

/****************交义开关配置**********************************/
//XBR0
//Bit7  bit6   bit5   bit4   bit3     bit2    bit1    bit0
//CP0E  ECI0E      PCA0ME           UART0EN  SPI0EN  SMB0EN
XBR0 = 0x07; // UART0EN  SPI0EN  SMB0EN

//XBR1
//Bit7     bit6   bit5   bit4    bit3     bit2    bit1    bit0
//SYSCKE   T2EXE  T2E    INT1E   T1E      INT0E   T0E     CP1E 
XBR1 = 0x00;	// XBAR1: Initial Reset Value

//XBR2
//Bit7     bit6     bit5   bit4   bit3     bit2    bit1    bit0
//WEAKPUD  XRARE      -    T4EXE  T4E      UART1E  EMIFLE  CNVST0E     
XBR2 = 0x40;	// XRARE=1 交义开关允许
/*****************************************************************/



/***************端口输入输出方式配置****************************/
P0MDOUT = 0x1c; //SDA SCL RXD0 RXD1必需为漏极开路输出
P1MDIN  = 0x00; //ADC1口，所以配置为模拟输入
P1MDOUT = 0x00;
P2MDOUT = 0x00;
P3MDOUT = 0xFF;//P3.0为推挽输出
P74OUT  = 0xFF;//高端口为推挽方式
/***************************************************************/




/**************外部存储器配置**********************************/
EMI0CF=0x3f;	//外部存储器接口配置 
EMI0TC=0xff;	//外部存储器时序控制 //一次XRAM操作要22个sysclk
/***************************************************************/



/*************比较器配置***************************************/
CPT0CN = 0x00;   // Comparator 0 Control Register
CPT1CN = 0x00;   // Comparator 1 Control Register
/***************************************************************/




/******************振荡器配置***************************************/
 OSCXCN = 0x67;                   // start external oscillator with 22.1184MHz crystal
 for (i=0; i < 256; i++) ;        // Wait for osc. to start up      
 while (!(OSCXCN & 0x80)) ;       // Wait for crystal osc. to settle 
 OSCICN = 0x08;                   // Disable the internal osc.
/***************************************************************/


/******************电压基准配置**********************************/
REF0CN = 0x03;	// Reference Control Register
/***************************************************************/



/*******************ADC0配置*************************************/
AMX0CF = 0x00;	// AMUX0 Configuration Register
AMX0SL = 0x00;	// AMUX0 Channel Select Register
ADC0CF  = 0x48; //ADC0 Configuration Register增益=1  
ADC0CN  = 0xC1; //ADC0使能,寄存器数据左对齐
//ADC0CN  = 0x80; //ADC0使能,寄存器数据右对齐
ADC0L = 0x00;   // ADC0 Data Word LSB
ADC0H = 0x00;   // ADC0 Data Word MSB
   //ADC0LTH = 0x00;	// ADC0 Less-Than High Byte Register
   //ADC0LTL = 0x00;	// ADC0 Less-Than Low Byte Register
   //ADC0GTH = 0xFF;	// ADC0 Greater-Than High Byte Register
   //ADC0GTL = 0xFF;	// ADC0 Greater-Than Low Byte Register
/***************************************************************/


/*******************ADC1配置*************************************/
ADC1CF = 0x41;  // ADC2 Configuration Register增益=1
AMX1SL = 0x00;  // AMUX1 Chanel Select Register
ADC1CN = 0xc0;  // ADC2 Control Register  ADC2使能
ADC1   = 0x00;  //ADC1 Data Word
/***************************************************************/



/*******************DA配置*************************************/
DAC0CN = 0x80;                   // 打开DAC0，右对齐模式
DAC0L = 0xFF;	// DAC0 Low Byte Register
DAC0H = 0x0F;	// DAC0 High Byte Register

DAC1CN = 0x80;	// DAC1 Control Register
DAC1L = 0xff;	// DAC1 Low Byte Register
DAC1H = 0x08;	// DAC1 High Byte Register
/***************************************************************/


/*******************SPI配置*************************************/
SPI0CFG = 0xc7;	// SCK周期的第2个边沿采数，SCK空闲为高电平，8位数据
SPI0CN  = 0x03; //允许主方式，SPIO。BIT1=MSTEN，BIT0=SPIEN
SPI0CKR = 0x00; //Fsck=22118400/2(0+1)=22.1184Mhz
/***************************************************************/




/*******************SMBUS配置*************************************/
SMB0CN = 0x44;	// SMBus Control Register //ENSMB=1,使能SMB AA=1，在应答周期内返回ACK。
SMB0ADR = 0x00;	// SMBus Address Register
SMB0CR = 0xe0;	// SMBus Clock Rate Register ////SCL速率设置 TLOW=1.44us
/***************************************************************/


/*******************UART0配置*************************************/
SADEN0 = 0x00;      // Serial 0 Slave Address Enable
SADDR0 = 0x00;      // Serial 0 Slave Address Register
SCON0 = 0x50;       // Serial Port Control Register
PCON = 0x00;        // Power Control Register
/***************************************************************/


/*******************UART1配置*************************************/
SCON1 = 0x00;       // Serial Port 1 Control Register 
/***************************************************************/


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



/*******************定时器配置*************************************/
CKCON = 0x00;   // Clock Control Register  sysclk/12
TH0 = 0x88;		//0.065MS  a3 
TL0 = 0x88;     // Timer 0 Low Byte  8次中断完成一次全通道AD采样，即一次AD时间为0.4MS  F=2.5K
//TH0 = 0x82;     // Timer 0 High Byte 
TH1 = 0xFF;     // Timer 1 High Byte 
TL1 = 0xFF;     // Timer 1 Low Byte  
TMOD = 0x22;    // Timer Mode Register
//TCON = 0x50;    // Timer Control Register   TR0=1；TR1=1;
TCON = 0x40;    // Timer Control Register   TR0=0；TR1=1;

T2CON = 0x00;  // Timer 2 Configuration
RCAP2L = 0x00;  // Timer 2 Reload Register Low Byte
RCAP2H = 0x00;  // Timer 2 Reload Register High Byte
TL2 =0x00;
TH2 =0x00;

TMR3CN = 0x00;  // Timer 3 Control Register
TMR3H = 0x00;   // Timer 3 High Byte
TMR3L = 0x00;   // Timer 3 Low Byte
TMR3RLH=0x00;

T4CON =0x00;
RCAP4L = 0x00;  // Timer 4 Reload Register Low Byte
RCAP4H = 0x00;  // Timer 4 Reload Register High Byte
TL4 =0x00;
TH4 =0x00;
/***************************************************************/

/*******************复位配置*************************************/
RSTSRC = 0x00;	// Reset Source Register
/***************************************************************/


/*******************中断配置*************************************/
IE = 0x12;          //Interrupt Enable    EA=0 ， ET0=1；  ES0=1;
IP = 0x00;          //Interrupt Priority
EIE1 = 0x00;
EIE2 = 0x00;        //Extended Interrupt Enable 2
EIP1 = 0x00;        //Extended Interrupt Priority 1
EIP2 = 0x00;        //Extended Interrupt Priority 2
/***************************************************************/


}   //End of config