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器件型号：CC2530 大家好、
以下是客户的请求：
CC2530设置为首先在上升沿进行捕捉、并且在进入上升沿的捕捉中断后、它设置为在下降沿进行捕捉、以便测量高电平的时间。 但是、在使用它时、发现只有调试过程可以进入上升沿中断、但不能进入下降沿中断。
代码如下所示：
#include <ioCC2530.h>
typedef unsigned char uchar;
typedef unsigned int uint;
unsigned char irtime=0;
#define IR P1_0
#define uint32_t unsigned int
#define uint16_t unsigned short
#define uint8_t unsigned char
unsigned char receive_ok=1;
uint32_t upCount=0;
uint16_t valueDown=0;
uint16_t valueUp=0;
uint32_t width=0;
uint32_t isUpCap=1;
uint buffer[200]={0};
char bufferId=0;
//#define leng_23
//#define leng_21
#if defined leng_23
uint8_t leng=23;
uint8_t arr[23]={0x00};
#elif defined leng_21
uint8_t leng=21;
uint8_t arr[21]={0x00};
#else
uint8_t leng=17;
uint8_t arr[17]={0x00};
#endif
void IR_Init(void)
{
P1DIR&=0XFE;//P1.0 for input mode
P1SEL|=0X01;//Peripheral function
}
void InitUart(void)
{
PERCFG &= 0xF0; //The IO position of the peripheral control register USART 0: 0 is the P0 port position 1
P0SEL = 0x0c; //P0_2, P0_3 are used as serial ports (peripheral functions)
P2DIR &= ~0XC0; //P0 takes priority as UART0
U0CSR |= 0x80; //Set to UART mode
U0GCR |= 11;
U0BAUD |= 216; //Set the baud rate to 115200
UTX0IF = 0; //UART0 TX interrupt flag is initially set to 0
}
void UartSendString(uint *Data, int len)
{
uint i;
for(i=0; i<len; i++)
{
U0DBUF = *Data++;
while(UTX0IF == 0);
UTX0IF = 0;
}
}
void InitT3(void)
{
T3CTL|=0X08;//Enable overflow interrupt
T3IE=1;//
Enable total interrupt and T3 interrupt
T3CTL|=0XE0;//128 frequency division
T3CTL&=~0X03;//auto reload
T3CTL|=0X10;//boot
EA=1;
}
void T1_Init(void)
{
PERCFG|=0X40;//Timer 1 Alternate Location 2
P2SEL&=0XEF;//Timer 1 takes precedence
T1CTL=0X0D;//128free running mode
T1CCTL2=0X41;//Rising edge capture, capture mode, timer 1 channel 2 timer enable
T1IE=1;
EA=1;//Timer 1 overflow interrupt is automatically turned on, in the register of TIMIF
}
uint ary[3]={1,2,3};
int main()
{
CLKCONCMD &= ~0x40; //Set the system clock source to 32MHZ crystal oscillator
while(CLKCONSTA & 0x40); //Wait for the crystal oscillator to stabilize to 32M
CLKCONCMD &= ~0x07; //Set the system main clock frequency to 32MHZ
IR_Init();
// Time1_Init();
T1_Init();
InitUart();
//UartSendString("usart is ok",11);
UartSendString(ary,3);
while(1)
{
if(receive_ok==0)
{
UartSendString(buffer, sizeof(buffer));
for(int ix=0;ix<200;ix++)
{
buffer[ix]=0x00;
}
receive_ok=1;
}
}
}
uint8_t a=0;
#pragma vector = T1_VECTOR
__interrupt void T1_ISR()
{
T1IF = 0;
T1STAT &= ~0x04;//clear interrupt flag
// if(T1STAT&(~0XDF))//Timer 1 overflow interrupt
// {
//
//
// irtime++;
//
// }
if(T1STAT&(~0XFB))//Edge-triggered interrupt, timer 1 channel 2 interrupt
{
if(isUpCap)//Determine whether it is a rising edge trigger
{
a=T1CC2H;
uint8_t b=T1CC2L;
valueUp=(a<<8)|b;
isUpCap=0;//Falling edge flag clear
T1CCTL2|=0X02;//Falling edge capture
irtime=0;//The overflow count value is set to 0
}
else
{
uint8_t c=T1CC2H;
uint8_t d=T1CC2L;
valueDown=(c<<8)|d;
//valueDown=(T1CC2H<<8)|T1CC2L;
isUpCap=1;//The rising edge of the flag bit is cleared
T1CCTL2|=0X01;//Rising edge capture
width=valueDown-valueUp+65536*irtime;//Calculate the time
if(bufferId>=1)
{
buffer[bufferId++]=width;
if(bufferId>184)
{
bufferId=0;
receive_ok=0;
}
}
}
}
}
//#pragma vector = T3_VECTOR
//__interrupt void T3_ISR()//2.1ms
//{
// IRCON=0X00;
// irtime++;
//}
您可以帮助检查此案例吗？ 谢谢。
此致、
Nick
