关于KL46 TPM模块，程序进不了MOD溢出中断

折夜

参考了KL25写了KL46的TPM模块，可是发现进不了MOD溢出中断的问题，检查了代码没发现问题，大神帮忙看看哈
关键代码如下：

1. void SIM_Init(void)
   
2. {
   
3.     SIM_SOPT2 |= SIM_SOPT2_TPMSRC(1);
   
4.     SIM_SOPT2 &= ~SIM_SOPT2_PLLFLLSEL_MASK;   //FLLCLOCK 为TPM时钟 48MHz
   
5.     SIM_SCGC5 |= SIM_SCGC5_PORTA_MASK | SIM_SCGC5_PORTC_MASK;
   
6.     SIM_SCGC6 |= SIM_SCGC6_TPM0_MASK | SIM_SCGC6_TPM1_MASK;
   
7. }//ATL3 PTA12 ->TPM1_CH0 PTA13 ->TPM1_CH1  //ATL3 PTC2 ->TPM0_CH1  PTC3 ->TPM0_CH2
   
8. void PORT_Init(void)
   
9. {
   
10.     PORTA_PCR12 |= PORT_PCR_ISF_MASK | PORT_PCR_MUX(0x3) | PORT_PCR_PE_MASK | PORT_PCR_PS_MASK;
    
11.     PORTA_PCR13 |= PORT_PCR_ISF_MASK | PORT_PCR_MUX(0x3) | PORT_PCR_PE_MASK | PORT_PCR_PS_MASK;
    
12.     GPIOA_PDDR &= ~(3<<12);           //上拉输入
    
13.     PORTC_PCR2 |= PORT_PCR_ISF_MASK | PORT_PCR_MUX(0x3) | PORT_PCR_DSE_MASK;
    
14.     PORTC_PCR2 &= ~PORT_PCR_PE_MASK;  //推挽输出
    
15.     PORTC_PCR3 |= PORT_PCR_ISF_MASK | PORT_PCR_MUX(0x3) | PORT_PCR_DSE_MASK;
    
16.     PORTC_PCR3 &= ~PORT_PCR_PE_MASK;
    
17.     GPIOC_PDDR |= (3<<2);
    
18. }void TPM0_Init(void)
    
19. {
    
20.     enable_irq(17);set_irq_priority(17,2);
    
21.     TPM0_CNT = 0;
    
22.     TPM0_MOD = 0x12C0;
    
23.     TPM0_SC |= TPM_SC_TOF_MASK | TPM_SC_TOIE_MASK | TPM_SC_CMOD(1);
    
24.     TPM0_C1SC |= TPM_CnSC_MSB_MASK | TPM_CnSC_ELSB_MASK;  //先高后低
    
25.     TPM0_C1V = 0;
    
26.     TPM0_C2SC |= TPM_CnSC_MSB_MASK | TPM_CnSC_ELSA_MASK;  //先低后高
    
27.     TPM0_C2V = 0;
    
28. }void TPM1_Init(void)
    
29. {
    
30.     enable_irq(18);set_irq_priority(18,1);
    
31.     TPM1_CONF |= TPM_CONF_TRGSEL(8) | TPM_CONF_CSOO_MASK | TPM_CONF_CSOT_MASK;
    
32.     TPM1_CNT = 0;
    
33.     TPM1_MOD = 14400;
    
34.     TPM1_SC |= TPM_SC_TOF_MASK | TPM_SC_TOIE_MASK | TPM_SC_CMOD(1);
    
35.     TPM1_C0SC |= TPM_CnSC_ELSA_MASK | TPM_CnSC_CHIE_MASK | TPM_CnSC_CHF_MASK; //上升沿捕获（周期）
    
36.     TPM1_C0V = 0;
    
37.     TPM1_C1SC |= TPM_CnSC_ELSB_MASK | TPM_CnSC_CHIE_MASK | TPM_CnSC_CHF_MASK; //下降沿捕获（占空比）
    
38.     TPM1_C1V = 0;
    
39. }void TPM0_isrv(void)
    
40. {
    
41.     TPM0_SC |= TPM_SC_TOF_MASK;
    
42.     TPM0_C1V = Input_Period;
    
43.     TPM0_C2V = Input_Duty;
    
44. }void TPM1_isrv(void)
    
45. {
    
46.     TPM1_SC |= TPM_SC_TOF_MASK;
    
47.     Capture_Period = (uint16)TPM1_C0V;
    
48.     Capture_Duty = (uint16)TPM1_C1V;
    
49.     TPM1_C1SC |= TPM_CnSC_CHF_MASK;
    
50.    
    
51.     if(TPM_STATUS_CH0F_MASK)
    
52.     {
    
53.        TPM1_C0SC |= TPM_CnSC_CHF_MASK;
    
54.        Capture_Duty = Capture_Duty*100/Capture_Period;
    
55.        LCD_write_english_string(4,0,"So_p");
    
56.        LCD_Write_Num(4,30,48000000/Capture_Period);
    
57.        LCD_write_english_string(2,65,"Hz");
    
58.        LCD_write_english_string(3,0,"Si_D     %");
    
59.        LCD_Write_Num(5,30,Capture_Duty/48);
    
60.     }
    
61. }

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isr.h文件也写了
断点设在TPM0_isrv()函数中，发现一直到不了断点