TMS320LF2406 反复关闭开启定时器中断随机导致T1下溢中断异常

【芯片型号】TMS320LF2406

【CCS版本】CCS V3.3

【问题描述】

        使用定时器T1下溢中断，程序运行分为两种状态，停机和运行，上电后，能正常进入定时器下溢中断，当某次（随机）停止运行后，则无法再次进入定时器下溢中断。每次状态切换都需要执行下面描述的程序：

       开始运行时，执行

                     MC_StopUninit( );

                     MC_RunInit( );

      停止运行时，执行

                     MC_RunUninit( );

                     MC_StopUninit( );

       具体函数见附件。

【备注】windows xp sp3

源文件.c

Fullscreen

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
VOID    MC_StopInit()
{
    T1CNT=0;
    T1CON=0x0940;
    T1PR=0x04e2;
    
    // IO_AdcInit()
    ADCTRL1 = 0x4000;
    asm("   RPT     #20");
    asm("   NOP");
    ADCTRL1 = 0x3F90
    MAXCONV = 11;
    CHSELSEQ1 = 0x44DD;
    CHSELSEQ2 = 0xff77;
    CHSELSEQ3 = 0x2255
    CHSELSEQ4 = 0xbbaa
    ADCTRL2 = 0x0300;
    GPTCONA = 0x0100;
    
    // IO_IrqInit();
    asm("   SETC INTM");
    EVBIMRA |= 0x01;    // EVM_PDPINTB_ENABLE
    EVBIFRA = 0x01;
    EVAIMRA |= 0x01;    // EVAIMRA_PDPINTA_ENABLE
    EVAIFRA = 0x01;
    EVAIMRA |= 0x200;   // EVAIMRA_T1UNDERFLOW
    EVAIFRA = 0x200;
    IMR |= 0x03;        // enable PDPINTA/B �� EVAIMRA_T1UNDERFLOW �ж�
    IFR = 0x03;
    asm("   CLRC INTM");
    return;
}
VOID    MC_StopUninit()
{
    // EVM_T_STOP(1);
    T1CON = 0;
    
    // IO_IrqUninit();
    asm("   SETC INTM");
    EVAIMRA &= 0xfdffu;
    EVAIMRA &= 0xfffeu;
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

VOID    MC_StopInit()
{
    T1CNT=0;
    T1CON=0x0940;
    T1PR=0x04e2;
	
	// IO_AdcInit()
	ADCTRL1 = 0x4000;
	asm("   RPT     #20");
	asm("   NOP");
	ADCTRL1 = 0x3F90
    MAXCONV = 11;
    CHSELSEQ1 = 0x44DD;
    CHSELSEQ2 = 0xff77;
    CHSELSEQ3 = 0x2255
    CHSELSEQ4 = 0xbbaa
    ADCTRL2 = 0x0300;
    GPTCONA = 0x0100;
    
    // IO_IrqInit();
    asm("   SETC INTM");
    EVBIMRA |= 0x01;	// EVM_PDPINTB_ENABLE
    EVBIFRA = 0x01;
    EVAIMRA |= 0x01;	// EVAIMRA_PDPINTA_ENABLE
    EVAIFRA = 0x01;
    EVAIMRA |= 0x200;   // EVAIMRA_T1UNDERFLOW
    EVAIFRA = 0x200;
    IMR |= 0x03;		// enable PDPINTA/B �� EVAIMRA_T1UNDERFLOW �ж�
    IFR = 0x03;
    asm("   CLRC INTM");

    return;
}

VOID    MC_StopUninit()
{
    // EVM_T_STOP(1);
    T1CON = 0;
    
    // IO_IrqUninit();
    asm("   SETC INTM");
    EVAIMRA &= 0xfdffu;
    EVAIMRA &= 0xfffeu;
    EVBIMRA &= 0xfffeu;
    IMR &= 0xfffcu;
    asm("   CLRC INTM");
    
    // IO_AdcUninit();
	GPTCONA = 0;

    return;
}

VOID    MC_RunInit()
{
    

    ......
    
    //IO_AdcInit();
    ADCTRL1 = 0x4000;
	asm("   RPT     #20");
	asm("   NOP");
	ADCTRL1 = 0x3F90
    MAXCONV = 11;
    CHSELSEQ1 = 0x44DD;
    CHSELSEQ2 = 0xff77;
    CHSELSEQ3 = 0x2255
    CHSELSEQ4 = 0xbbaa
    ADCTRL2 = 0x0300;
    GPTCONA = 0x0100;
    
    //IO_PwmInit(g_stIOPwm.usT1PRAim, g_stIOPwm.usT1PRAim >> 1, \
    //    TRUE, CONFIG_EVM_NORMAL_PWMSET);
    CMPR1 = 0x04e2>>1;
    CMPR2 = 0x04e2>>1;
    CMPR3 = 0x04e2>>1;
    ACTRA = 0x0999;
    
    T1CNT = 0u;
    T1CON = 2368u;
    T1PR = 0x04e2;
    COMCONA = 0x8200u;
    
        
    //IO_IrqInit();
    asm("   SETC INTM");
	EVBIMRA |= 0x01;	// EVM_PDPINTB_ENABLE
    EVBIFRA = 0x01;
    EVAIMRA |= 0x01;	// EVAIMRA_PDPINTA_ENABLE
    EVAIFRA = 0x01;
    EVAIMRA |= 0x200;   // EVAIMRA_T1UNDERFLOW
    EVAIFRA = 0x200;
    IMR |= 0x03;		// enable PDPINTA/B �� EVAIMRA_T1UNDERFLOW �ж�
    IFR = 0x03;
    asm("   CLRC INTM");

    return;
}

VOID    MC_RunUninit()
{
    //IO_IrqUninit();
    asm("   SETC INTM");
    EVAIMRA &= 0xfdffu;
    EVAIMRA &= 0xfffeu;
    EVBIMRA &= 0xfffeu;
    IMR &= 0xfffcu;
    asm("   CLRC INTM");
    
    //IO_PwmUninit();
    COMCONA = 0x8000;
    T1CON = 0;
    
    //IO_AdcUninit();
    GPTCONA = 0;

    return;
}

添加回复...
建议为答案

C2000 微控制器

C2000™︎ 微控制器论坛

TMS320LF2406 反复关闭开启定时器中断随机导致T1下溢中断异常