软件触发中断（NVIC->STIR）

软件触发中断（NVIC->STIR）

首先我们要打开这个功能，怎么打开？看表！

 

 

 

 

 

 那么代码怎么写呢？

 1 /* 使能软件触发中断功能 */
 2 SCB->CCR |= 0x1 << 1;
 3 
 4 #if 0//中断向量表示例
 5 #pragma language = extended
 6 #pragma segment = "CSTACK"
 7 
 8 #pragma location = ".intvec"
 9 __root const intvec_elem __vector_table[64]=
10 {
11     {.__ptr = __sfe("CSTACK")},
12     __iar_program_start,
13 /******  Cortex-M4 Processor Exceptions Numbers *******************************/
14     NMI_Handler,              /*!< -14 02 Non Maskable Interrupt */
15     HardFault_Handler,        /*!< -13 03 Hard Fault Interrupt */
16     MemManage_Handler,        /*!< -12 04 Memory Management Interrupt */
17     BusFault_Handler,         /*!< -11 05 Bus Fault Interrupt */
18     UsageFault_Handler,       /*!< -10 06 Usage Fault Interrupt */
19     0,0,0,0,                  /*!<        Reserved Interrupt */      
20     SVC_Handler,              /*!< -05 11 SV Call Interrupt */
21     DebugMon_Handler,         /*!< -04 12 Debug Monitor Interrupt */
22     0,                        /*!<        Reserved Interrupt*/
23     PendSV_Handler,           /*!< -02 14 Pend SV Interrupt */
24     SysTick_Handler,          /*!< -01 15 System Tick Interrupt */
25 /****** smt specific Interrupt Numbers ****************************************/
26     TWDG_IRQHandler,          /*!<  00 16 W-WATCHDOG Interrupt */
27     IWDG_IRQHandler,          /*!<  01 17 I-WATCHDOG Interrupt */
28     FPU_IRQHandler,           /*!<  02 18 FPU Interrupt */
29     fft_irqhandle,            /*!<  03 19 FFT Interrupt */
30     vad_irqhandle,            /*!<  04 20 VAD Interrupt */
31     dnn_irqhandle,            /*!<  05 21 DNN Interrupt */
32     ADC_IRQHandler,           /*!<  06 22 ADC Interrupt */
33     SDC_IRQHandler,           /*!<  07 23 SDIO Interrupt */
34     DMA_IRQHandler,           /*!<  08 24 DMA Interrupt */
35     IIS_DMA0_IRQHandler,      /*!<  09 25 IIS_DMA0 Interrupt */
36     IIS_DMA1_IRQHandler,      /*!<  10 26 IIS_DMA1 Interrupt */
37     SCU_IRQHandler,           /*!<  11 27 SCU Interrupt */
38     EXTI0_IRQHandler,         /*!<  12 28 EXT0 Interrupt */
39     EXTI1_IRQHandler,         /*!<  13 29 EXT1 Interrupt */
40     0,                        /*!<  14 30 ALC Interrupt */
41     TIM0_IRQHandler,          /*!<  15 31 TIMER0 Interrupt */
42     TIM1_IRQHandler,          /*!<  16 32 TIMER1 Interrupt */
43     TIM2_IRQHandler,          /*!<  17 33 TIMER2 Interrupt */
44     TIM3_IRQHandler,          /*!<  18 34 TIMER3 Interrupt */
45     UART0_IRQHandler,         /*!<  19 35 UART0 Interrupt */
46     UART1_IRQHandler,         /*!<  20 36 UART1 Interrupt */
47     UART2_IRQHandler,         /*!<  21 37 UART2 Interrupt */
48     I2C0_IRQHandler,          /*!<  22 38 IIC2 Interrupt */
49     I2C1_IRQHandler,          /*!<  23 39 IIC1 Interrupt */
50     GPIO5_IRQHandler,         /*!<  24 40 GPIO5 Interrupt */
51     SPI1_IRQHandler,          /*!<  25 41 SPI1 *Interrupt */ 
52     GPIO0_IRQHandler,         /*!<  26 42 GPIO0 Interrupt */
53     GPIO1_IRQHandler,         /*!<  27 43 GPIO1 Interrupt */
54     GPIO2_IRQHandler,         /*!<  28 44 GPIO2 Interrupt */
55     GPIO3_IRQHandler,         /*!<  29 45 GPIO3 Interrupt */
56     GPIO4_IRQHandler,         /*!<  30 46 GPIO4 Interrupt */
57     0,                        /*!<  31 47 PSRAM Interrupt */
58     0,                        /*!<  32 48 ICACHE Interrupt */
59     IIS1_IRQHandler,          /*!<  33 49 IIS1 Interrupt */
60     0,                        /*!<  34 50 SCACHE Interrupt */
61     IIS3_IRQHandler,          /*!<  35 51 IIS3 Interrupt */
62     0,                        /*!<  36 52 IIS2 Interrupt */
63 /********************************* END ****************************************/
64 };
65 #endif
66 
67 /* 触发TWDG中断 */
68 NVIC->STIR = 0;
69 
70 /* 触发IWDG中断 */
71 NVIC->STIR = 0x1;
72 
73 //其他的就不写了