mcu.c

keil c 开发的USB芯片CH375的程序CPU 为c8051f340

/////////////////////////////////////
//  Generated Initialization File  //
/////////////////////////////////////

#include "C8051F340.h"
#include <PORTDEFINE.H>
#include <MCU.H>
#include <intrins.h>

// Peripheral specific initialization functions,
// Called from the Init_Device() function

void Reset_Sources_Init()
{
    int i = 0;
    VDM0CN    = 0x80;
    for (i = 0; i < 350; i++);  // Wait 100us for initialization
    RSTSRC    = 0x06;
	FLSCL  = 0x80;
}

void PCA_Init()
{
    PCA0CN    = 0x40;
    PCA0MD    &= ~0x40;			//关看门狗
    PCA0MD    = 0x04;			//设置定时器0溢出为时钟源
    PCA0CPL4  = 0x07; 			//定时2s复位 256*7+256
    PCA0L	  = 0x00;
	PCA0MD    |= 0x40;			//开看门狗
}

void Timer_Init()
{
    TCON      = 0x50;			//定时器0、1允许
    TMOD      = 0x21;			//定时器0为16位、定时器1为8位自动重载
    CKCON     = 0x08;		   	//定时器1使用系统时钟
    TL0       = TL0_VALUE;		//定时器0的1ms定时中断
    TH0       = TH0_VALUE;
    TH1       = 0x30;			//定时器1的115200波特率
	TL1       = 0x30;	
	
	TMR2CN    = 0x04;			//定时器2允许
    TMR2L     = TL2_VALUE;		//4ms定时
    TMR2H     = TH2_VALUE;
	TMR2RLL   = TL2_VALUE;
    TMR2RLH   = TH2_VALUE;

}

void UART_Init()
{
    SCON0     = 0x50;
}

void Voltage_Reference_Init()
{
    REF0CN    = 0x08;
}

void EMI_Init()
{
  //  EMI0CF    = 0x08;
   // EMI0TC    = 0x40;
       EMI0CF    = 0x0B;
    	EMI0TC    = 0xFD;
}

void Port_IO_Init()
{
    // P0.0  -  Skipped,     Push-Pull,  Digital
    // P0.1  -  Skipped,     Push-Pull,  Digital
    // P0.2  -  Skipped,     Open-Drain, Digital
    // P0.3  -  Skipped,     Open-Drain, Digital
    // P0.4  -  TX0 (UART0), Open-Drain, Digital
    // P0.5  -  RX0 (UART0), Open-Drain, Digital
    // P0.6  -  Skipped,     Push-Pull,  Digital
    // P0.7  -  Skipped,     Open-Drain, Digital

    // P1.0  -  Skipped,     Push-Pull,  Digital
    // P1.1  -  Skipped,     Push-Pull,  Digital
    // P1.2  -  Skipped,     Open-Drain, Digital
    // P1.3  -  Skipped,     Open-Drain, Digital
    // P1.4  -  Skipped,     Push-Pull,  Digital
    // P1.5  -  Skipped,     Push-Pull,  Digital
    // P1.6  -  Skipped,     Push-Pull,  Digital
    // P1.7  -  Skipped,     Push-Pull,  Digital

    // P2.0  -  Skipped,     Push-Pull,  Digital
    // P2.1  -  Skipped,     Push-Pull,  Digital
    // P2.2  -  Skipped,     Push-Pull,  Digital
    // P2.3  -  Skipped,     Push-Pull,  Digital
    // P2.4  -  Skipped,     Push-Pull,  Digital
    // P2.5  -  Skipped,     Push-Pull,  Digital
    // P2.6  -  Skipped,     Push-Pull,  Digital
    // P2.7  -  Skipped,     Push-Pull,  Digital

    // P3.0  -  Skipped,     Push-Pull,  Digital
    // P3.1  -  Skipped,     Push-Pull,  Digital
    // P3.2  -  Skipped,     Push-Pull,  Digital
    // P3.3  -  Skipped,     Push-Pull,  Digital
    // P3.4  -  Skipped,     Push-Pull,  Digital
    // P3.5  -  Skipped,     Push-Pull,  Digital
    // P3.6  -  Skipped,     Push-Pull,  Digital
    // P3.7  -  Skipped,     Push-Pull,  Digital

    P0MDOUT   = 0x43;
    P1MDOUT   = 0xF3;
    P2MDOUT   = 0xFF;
    P3MDOUT   = 0xFF;
    P4MDOUT   = 0xFF;
	P0SKIP    = 0xCF;
    P1SKIP    = 0xFF;
    P2SKIP    = 0xFF;
    P3SKIP    = 0xFF;
    XBR0      = 0x01;
    XBR1      = 0x40;
}

void Oscillator_Init()
{
    int i = 0;
    OSCICN    = 0x83;
    CLKMUL    = 0x80;
    for (i = 0; i < 20; i++);    // Wait 5us for initialization
    CLKMUL    |= 0xC0;
    while ((CLKMUL & 0x20) == 0);
    CLKSEL    = 0x03;
}

void Interrupts_Init()
{
//    IP        = 0x10;			 //串口优先级高
//	IT01CF    = 0x00;			 //外部中断
    
	IT01CF    = 0x02;
	IE        = 0x81;			 //EA=1,ES0=1,ET0=1,ET2=1
//	EA=1;
//	ET0=1;
}

// Initialization function for device,
// Call Init_Device() from your main program
void Init_Device(void)
{
    Reset_Sources_Init();
    PCA_Init();
    Timer_Init();
    UART_Init();
    Voltage_Reference_Init();
    EMI_Init();
	Port_IO_Init();
    Oscillator_Init();
    Interrupts_Init();
}

void Clr_DOG(void)
{
  	PCA0CPH4 = 0x00;
}

void CloseWDT(void)
{
    PCA0MD  &= ~0x40;
}