main.c

F020单片机各模块代码实例

sfr P1 = 0x90; 
sfr P1MDOUT  =  0xA5;  
sfr OSCICN   =  0xB2;   
//sfr P3 = 0xB0;          /* SFR definition for Port 3 */

/*------------------------------------------------
MAIN C Function
------------------------------------------------*/
void display_led(void)
{
  P1MDOUT=0x20;
  P1 = 0xFF;
}
void main (void)
{
OSCICN =
//unsigned char pval;     /* temp variable for port values */
//pval=0xFF;
//P1 = 0xFF;              /* Setup P1 for Input */
 //display_led(); 
/*--------------------------------------
Use the Toolbox buttons in the debugger
to change the value of P1.  Open the
Port 1 and Port 3 dialogs from the
Peripherals Menu to view their status.
--------------------------------------*/
while (1)
  {
  display_led(); 
 // pval = P1;            /* Read P1 into pval */
 // P3 = pval;            /* Write pval to P3 */

  }				   
}