CC2530————T1定时器（自由计数模式）实现PWM（呼吸灯）

#include<iocc2530.h>
#define uint unsigned int
#define uchar unsigned char
#define LED1 P1_0
uchar h = 1;
void InitLED(void)
{
P1SEL &=~0X01;
P1DIR |=0X01;
LED1 =0;
}
void InitT1(void)
{
T1CTL |= 0X01;//一分频，自由计数模式，2-3为分频，0-1为计数模式
PERCFG = 0X40;
P1SEL |= 0X01;
T1CCTL2 |= 0X64;
T1CC2L |=0XFF;
T1CC2H |=h;
}
main()
{
InitLED();
InitT1();
uchar flag=0;
while(1)
{
if((T1STAT & 0X04) >0)
{
T1STAT &=0xfb;
if(flag1)
h++;//变亮
else
h–; //变弱
T1CC2L =0XFF;
T1CC2H =h;
if(h >=254)
flag=0;
if(h0)
flag =1;
}
}
}