cygnalcon.c

ucos2 for c8051f060 在目标板上运行5小时

#include <C8051F060.h>	// Register definition file.
#include <stdio.h>
#define SYSCLK 22118400                   // SYSCLK frequency in Hz
#define BAUDRATE 115200                   // Baud Rate for UART0


void SYSCLK_Init (void);
void UART0_Init (void);
void PORT_Init (void);
void config(void)
{

	WDTCN = 0xde;                          // disable watchdog timer
	WDTCN = 0xad;	
 	SYSCLK_Init ();
 	UART0_Init ();
 	PORT_Init ();
}
 /*	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

void PORT_Init (void)
{
char old_SFRPAGE = SFRPAGE;

   SFRPAGE = CONFIG_PAGE;              // Switch to configuration page


   XBR0    = 0x04;                     // Enable UART0 on crossbar
   XBR1    = 0x00;
   XBR2    = 0x40;                     // Enable crossbar and weak pull-ups
   P0MDOUT |= 0xFF;                    // enable Port0 outputs as push-pull

   SFRPAGE = old_SFRPAGE;              // restore SFRPAGE
}

//-----------------------------------------------------------------------------
// UART0_Init
//-----------------------------------------------------------------------------
//
// Configure the UART0 using Timer1, for <baudrate> and 8-N-1.
//
void UART0_Init (void)
{
char old_SFRPAGE = SFRPAGE;

   SFRPAGE = UART0_PAGE;               // Switch to UART0 page

   SCON0   = 0x50;                     // SCON: mode 1, 8-bit UART, enable RX
   SSTA0 = 0x10;                       // Timer 1 generates UART0 baud rate and
                                       // UART0 baud rate divide by two disabled

   SFRPAGE = TIMER01_PAGE;             // Switch to Timer 0/1 page

   TMOD   = 0x20;                      // TMOD: timer 1, mode 2, 8-bit reload
   TH1    = -(SYSCLK/BAUDRATE/16);     // set Timer1 reload value for baudrate
   TR1    = 1;                         // start Timer1
   CKCON |= 0x10;                      // Timer1 uses SYSCLK as time base
   PCON  |= 0x80;                      // SMOD = 1

   SFRPAGE = UART0_PAGE;               // Switch to UART0 page

   TI0    = 1;                         // Indicate TX ready

   SFRPAGE = old_SFRPAGE;              // restore SFRPAGE

}

//-----------------------------------------------------------------------------
// SYSCLK_Init
//-----------------------------------------------------------------------------
void SYSCLK_Init (void)
{
   char old_SFRPAGE = SFRPAGE;
   int i;                                 

   SFRPAGE = CONFIG_PAGE;              // Switch to Configuration Page

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

   for (i=0; i <5000; i++) ;           // XTLVLD blanking interval (>1ms)

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

   RSTSRC = 0x04;                      // enable missing clock detector reset

   CLKSEL = 0x01;                      // change to external crystal

   OSCICN = 0x00;                      // disable internal oscillator



   SFRPAGE = old_SFRPAGE;              // restore SFRPAGE
}