#include "c8051f310.h"
//#include "compiler.h" // SFR declarations
//sfr P0SKIP = 0xd4;
//sfr EIE1 = 0xe6;
//sfr CP0RIF = ;
unsigned int num=0,pj=0,wb=0,x=10;
unsigned int umn=0,jp=0,ke=0;
//bit ;
//-----------------------------------------------------------------------------
// Pin Declarations
//-----------------------------------------------------------------------------
sbit SW1 = P0^7; // SW1 ='0' means switch pressed
sbit LED1 = P0^7; // LED1 ='1' means ON
//-----------------------------------------------------------------------------
// Function Prototypes
//-----------------------------------------------------------------------------
void OSCILLATOR_Init (void);
void PORT_Init (void);
void Oscillator_Inits(void);
void delayms(unsigned int xms)
{
unsigned int i,j;
for(i=xms;i>0;i--)
for(j=330;j>0;j--);
}
//-----------------------------------------------------------------------------
// PORT_Init
//-----------------------------------------------------------------------------
//
// Return Value : None
// Parameters : None
//
// This function configures the crossbar and ports pins.
//
// To configure a pin as a digital input, the pin is configured as digital
// and open-drain and the port latch should be set to a '1'. The weak-pullups
// are used to pull the pins high. Pressing the switch pulls the pins low.
//
// To configure a pin as a digital output, the pin is configured as digital
// and push-pull.
//
// An output pin can also be configured to be an open-drain output if system
// requires it. For example, if the pin is an output on a multi-device bus,
// it will probably be configured as an open-drain output instead of a
// push-pull output. For the purposes of this example, the pin is configured
// as push-pull output because the pin in only connected to an LED.
//
// P0.7 digital open-drain Switch 1
// P3.3 digital push-pull LED1
//-----------------------------------------------------------------------------
void PORT_Init (void)
{
P0MDIN &= ~0x0C; // P0.2, P0.3 are analog
P0SKIP |= 0x0C; // P0.2, P0.3 skipped in the Crossbar
P0MDOUT = 0x11; // P0.7 is open-drain
P0 |= 0x80; // Set P0.7 latch to '1'
P1MDIN &= ~0x03; // Comparator 0 inputs (P1.0 and P1.1)
P1SKIP |= 0x03; // are analog inputs.
P2MDIN =0XFF; //P2口全部数字输入
// P2MDOUT = 0xff; //P2口全部推挽输出
// P2=0xff; //P2口低4位设置高电平，高4位设置低电平
// P2SKIP |= 0x00; //P2口都不跳过
// P3MDIN |= 0x08; // P3.3 is digital
P3MDOUT = 0x08; // P3.3 is push-pull
XBR1 = 0x60;
XBR0 = 0X10; // Enable crossbar and enable
// weak pull-ups
}
//-----------------------------------------------------------------------------
// Timer0_Init
//-----------------------------------------------------------------------------
//
// Return Value : None
// Parameters : None
//
// This function configures the Timer0 as a 8-bit timer with reload, interrupt
// enabled.
// Using the internal osc. at 24.5MHz with a prescaler of 1:8 and reloading
// TL0 register with TH0 it will interrupt aproximately one time every 1msec.
//
// Note: The Timer0 uses a 1:48 prescaler. If this setting changes, the
// TIMER_PRESCALER constant must also be changed.
//-----------------------------------------------------------------------------
void Timer0_Init(void)
{
EA=1;
TH0 = (65536-15360)/256; // Init Timer0 High register
TL0 = (65536-15360)%256; // Set the intial Timer0 value
TL1 = (65536-15360)/256;//0x00;
TH1 = (65536-15360)%256;//0X00;
TMOD = 0x11; // Timer0 in 16-bit reload mode
// CKCON |= 0x04; // Timer0 uses a 1:48 prescaler
ET0 = 1; // Timer0 interrupt enabled
ET1 = 1;
// TCON = 0x10; // Timer0 ON
TR0 = 1;
TR1 = 1;
EIE1= 0X20;
}
/*****************定时c秒函数************************/
void deng()
{
if(pj==x)//判断标记位
{
pj=0;
wb=TH1*255+TL1;//读计数器数据
// led=1;
LED1=0;
TR0=0;
TR1=0;
}
}
//-----------------------------------------------------------------------------
// Comparator0_Init
//
// Return Value : None
// Parameters : None
//
// This function configures the comparator to pins P1.0 and P1.1
//-----------------------------------------------------------------------------
void Comparator0_Init (void)
{
unsigned int i;
CPT0CN = 0x8f;
CPT0MX = 0x00; // P1.1 = Negative Input
// P1.0 = Positive Input
for (i = 0; i < 35; i++); // Wait 10us for initialization
CPT0CN &= ~0x30;
// CPT0MD = 0x20;
}
//-----------------------------------------------------------------------------
// main() Routine
//-----------------------------------------------------------------------------
void main (void)
{
unsigned int zi=0;
PCA0MD &= ~0x40; // WDTE = 0 (clear watchdog timer
// enable)
PCA0MD = 0x00;
PORT_Init(); // Initialize Port I/O
// OSCILLATOR_Init (); // Initialize Oscillator
Oscillator_Inits();
Timer0_Init();
Comparator0_Init(); // Initialize Comparator0
while (1)
{
// P2=0xfb; //P2口低4位设置高电平，高4位设置低电平
P2=~P2;
ke=P2;
switch(ke)
{
case 0x01:
for(zi=1;zi>0;zi--)
{
LED1=0;delayms(1000);LED1=1;
}
break;
case 0x02:
for(zi=2;zi>0;zi--)
{
LED1=0;delayms(1000);LED1=1;
}
break;
case 0x03:
for(zi=3;zi>0;zi--)
{
LED1=0;delayms(1000);LED1=1;
}
break;
case 0x04:
for(zi=4;zi>0;zi--)
{
LED1=0;delayms(1000);LED1=1;
}
break;
case 0x05:
for(zi=5;zi>0;zi--)
{
LED1=0;delayms(1000);LED1=1;
}
break;
}
// if((CPT0CN&0x40)==0)
// {
//// delayms(30);
//// if(CPT0CN==0X8F)
//// {
// LED1=0;
//// }
// // while(1);
// }
// else LED1=1;
} // end of while(1)
} // end of main()
//-----------------------------------------------------------------------------
// Initialization Subroutines
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// OSCILLATOR_Init
//-----------------------------------------------------------------------------
//
// Return Value : None
// Parameters : None
//
// This function initializes the system clock to use the internal oscillator
// at its maximum frequency.
//
//-----------------------------------------------------------------------------
void Oscillator_Inits(void) //外部晶振初始化 3.6864M
{
unsigned int i;
OSCXCN=0x65; //start external oscillator with
// the appropriate XFCN setting
// based on crystal frequency
for (i=0;i<3000;i++); // 等1mS延时
while (!(OSCXCN&0x80));
RSTSRC = 0X06;
CLKSEL=0x01;
OSCICN=0x00;
}
//-----------------------------------------------------------------------------
// Interrupt Service Routines
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// Timer0_ISR
//-----------------------------------------------------------------------------
//
// Here we process the Timer0 interrupt and toggle the LED when appropriate
//
//-----------------------------------------------------------------------------
void Timer0_ISR (void) interrupt 1
{
// static int counter = 0;
//
// if((counter++) == LED_TOGGLE_RATE)
// {
// LED = ~LED; // Toggle the LED
// counter = 0;
// }
TH0 = (65536-15360)/256; // Init Timer0 High register
TL0 = (65536-15360)%256;
num++;
if(num==20)
{
num=0;
pj++;
// LED1=~LED1;
}
} |
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