cygnalcon.c

来自「本程序包为UCOS-Ⅱ在C8051F020的移植代码 是学习UCOS-Ⅱ的好资料」· C语言 代码 · 共 47 行

#include <C8051F020.h>	// Register definition file.

void config(void)
{	

 	int i;                              // delay counter

	WDTCN = 0x07;						// Watchdog Timer Control Register
 	WDTCN = 0xde;                       // disable watchdog timer
 	WDTCN = 0xad;



   OSCXCN = 0x67;                      // start external oscillator with
                                       // 22.1184MHz crystal

   for (i=0; i < 256; i++) ;           // XTLVLD blanking interval (>1ms)

   while (!(OSCXCN & 0x80)) ;          // Wait for crystal osc. to settle

   OSCICN = 0x88;                      // select external oscillator as SYSCLK
                                       // source and enable missing clock
                                       // detector




     XBR2     = 0x40;                    // Enable crossbar and weak pull-up
                                       


 
   P0MDOUT |= 0xFF;                    // enable TX0 as a push-pull output
   P1MDOUT |= 0xFF;                    // enable P1.6 (LED) as push-pull output
   P2MDOUT |= 0xFF;
   P3MDOUT |= 0xFF;

	CKCON = 0x00;   // Clock Control Register
    TH0 = 0x70;     // Timer 0 High Byte
    TL0 = 0x00;     // Timer 0 Low Byte
    TMOD = 0x01;    // Timer Mode Register
    TCON = 0x10;    // Timer Control Register 


}  //End of config