[问答]

M3进不了中断

1221

问答对人有帮助，内容完整，我也想知道答案 0 在学习M3时中断所遇到的问题，在网上找了些例程自己做时总进不了中断，主程序 #include "hw_ints.h" #include "hw_memmap.h" #include "hw_nvic.h" #include "hw_types.h" #include "debug.h" #include "gpio.h" #include "interrupt.h" #include "systick.h" #include "sysctl.h" #define PINS GPIO_PIN_5 void delay(int d)//延时函数 [ for( ; d; --d); ] int main(void) [ SysCtlClockSet(SYSCTL_SYSDIV_1 \| SYSCTL_USE_OSC \| SYSCTL_OSC_MAIN \| SYSCTL_XTAL_6MHZ);//配置系统时钟， SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);//使能外设GIOPB GPIODirModeSet(GPIO_PORTB_BASE, GPIO_PIN_0, GPIO_DIR_MODE_OUT);// SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC); // 使能 KEY所在的GPIO端口 //GPIOPinTypeGPIOInput(GPIO_PORTC_BASE, GPIO_PIN_4); GPIOPadConfigSet(GPIO_PORTC_BASE, GPIO_PIN_4, GPIO_STRENGTH_2MA,GPIO_PIN_TYPE_STD_WPU); GPIODirModeSet(GPIO_PORTC_BASE,GPIO_PIN_4,GPIO_DIR_MODE_IN); // 设置 KEY所在管脚为输入 GPIOIntTypeSet(GPIO_PORTC_BASE, GPIO_PIN_4, GPIO_LOW_LEVEL); //低电平中断 // 设置 KEY管脚的中断类型 GPIOPinIntEnable(GPIO_PORTC_BASE, GPIO_PIN_4); // 使能处理器中断 IntMasterEnable(); // 使能 KEY所在管脚的中断 IntEnable(INT_GPIOC); //好像程序进到这里就走不下去了 GPIOPinWrite(GPIO_PORTB_BASE, GPIO_PIN_0, 0XFF); //因为IntEnable(INT_GPIOC);所以没有被执行了，放在它前面就可以 while(1) [ GPIOPinWrite(GPIO_PORTB_BASE, GPIO_PIN_0, 0);//输出高电平 delay(20000);//延时 GPIOPinWrite(GPIO_PORTB_BASE, GPIO_PIN_0, 0XFF);//输出低电平 delay(20000);//延时 ] ] // GPIOD 的中断服务函数 void GPIO_Port_C_ISR(void) [ unsigned char ucVal; unsigned long ulStatus; ulStatus = GPIOPinIntStatus (GPIO_PORTC_BASE, true); // 读取中断状态 GPIOPinIntClear(GPIO_PORTC_BASE, ulStatus); // 清除中断状态，重要 if (ulStatus & GPIO_PIN_4) // 如果 KEY的中断状态有效 [ ucVal = GPIOPinRead(GPIO_PORTC_BASE, GPIO_PIN_5); // 翻转LED GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_5, ~ucVal); SysCtlDelay(300000); // 延时约 10ms，消除按键抖动 while (GPIOPinRead(GPIO_PORTC_BASE, GPIO_PIN_4) == 0x00); // 等待 KEY抬起 SysCtlDelay(300000); // 延时约 10ms，消除松键抖动 ] ] 中断注册 // Enable the IAR extensions for this source file. // //*************************************************************************** #pragma language=extended //************************************************************************* // // Forward declaration of the default fault handlers. // //************************************************************************* void ResetISR(void); static void NmiSR(void); static void FaultISR(void); static void IntDefaultHandler(void); //************************************************************************* // // External declarations for the interrupt handlers used by the application. // //************************************************************************* extern void GPIO_Port_C_ISR(void); //************************************************************************* // // The entry point for the application startup code. // //************************************************************************* extern void __iar_program_start(void); //************************************************************************* // // Reserve space for the system stack. // //************************************************************************* static unsigned long pulStack[64] @ ".noinit"; //************************************************************************* // // A union that describes the entries of the vector table. The union is needed // since the first entry is the stack pointer and the remainder are function // pointers. // //*************************************************************************** typedef union [ void (pfnHandler)(void); unsigned long ulPtr; ] uVectorEntry; //************************************************************************** // // The vector table. Note that the proper constructs must be placed on this to // ensure that it ends up at physical address 0x0000.0000. // //************************************************************************* __root const uVectorEntry __vector_table[] @ ".intvec" = [ [ .ulPtr = (unsigned long)pulStack + sizeof(pulStack) ], // The initial stack pointer ResetISR, // The reset handler NmiSR, // The NMI handler FaultISR, // The hard fault handler IntDefaultHandler, // The MPU fault handler IntDefaultHandler, // The bus fault handler IntDefaultHandler, // The usage fault handler 0, // Reserved 0, // Reserved 0, // Reserved 0, // Reserved IntDefaultHandler, // SVCall handler IntDefaultHandler, // Debug monitor handler 0, // Reserved IntDefaultHandler, // The PendSV handler IntDefaultHandler, // The SysTick handler IntDefaultHandler, // GPIO Port A IntDefaultHandler, // GPIO Port B // IntDefaultHandler, // GPIO Port c GPIO_Port_C_ISR, // GPIO Port C IntDefaultHandler, // GPIO Port D IntDefaultHandler, // GPIO Port E IntDefaultHandler, // UART0 Rx and Tx IntDefaultHandler, // UART1 Rx and Tx IntDefaultHandler, // SSI0 Rx and Tx IntDefaultHandler, // I2C0 Master and Slave IntDefaultHandler, // PWM Fault IntDefaultHandler, // PWM Generator 0 IntDefaultHandler, // PWM Generator 1 IntDefaultHandler, // PWM Generator 2 IntDefaultHandler, // Quadrature Encoder 0 IntDefaultHandler, // ADC Sequence 0 IntDefaultHandler, // ADC Sequence 1 IntDefaultHandler, // ADC Sequence 2 IntDefaultHandler, // ADC Sequence 3 IntDefaultHandler, // Watchdog timer IntDefaultHandler, // Timer 0 subtimer A IntDefaultHandler, // Timer 0 subtimer B IntDefaultHandler, // Timer 1 subtimer A IntDefaultHandler, // Timer 1 subtimer B IntDefaultHandler, // Timer 2 subtimer A IntDefaultHandler, // Timer 2 subtimer B IntDefaultHandler, // Analog Comparator 0 IntDefaultHandler, // Analog Comparator 1 IntDefaultHandler, // Analog Comparator 2 IntDefaultHandler, // System Control (PLL, OSC, BO) IntDefaultHandler, // FLASH Control IntDefaultHandler, // GPIO Port F IntDefaultHandler, // GPIO Port G IntDefaultHandler, // GPIO Port H IntDefaultHandler, // UART2 Rx and Tx IntDefaultHandler, // SSI1 Rx and Tx IntDefaultHandler, // Timer 3 subtimer A IntDefaultHandler, // Timer 3 subtimer B IntDefaultHandler, // I2C1 Master and Slave IntDefaultHandler, // Quadrature Encoder 1 IntDefaultHandler, // CAN0 IntDefaultHandler, // CAN1 IntDefaultHandler, // CAN2 IntDefaultHandler, // Ethernet IntDefaultHandler, // Hibernate IntDefaultHandler, // USB0 IntDefaultHandler, // PWM Generator 3 IntDefaultHandler, // uDMA Software Transfer IntDefaultHandler, // uDMA Error IntDefaultHandler, // ADC1 Sequence 0 IntDefaultHandler, // ADC1 Sequence 1 IntDefaultHandler, // ADC1 Sequence 2 IntDefaultHandler, // ADC1 Sequence 3 IntDefaultHandler, // I2S0 IntDefaultHandler, // External Bus Interface 0 IntDefaultHandler // GPIO Port J ]; //************************************************************************* // // This is the code that gets called when the processor first starts execution // following a reset event. Only the absolutely necessary set is performed, // after which the application supplied entry() routine is called. Any fancy // actions (such as making decisions based on the reset cause register, and // resetting the bits in that register) are left solely in the hands of the // application. // //************************************************************************* void ResetISR(void) [ // // Call the application's entry point. // __iar_program_start(); ] //************************************************************************* // // This is the code that gets called when the processor receives a NMI. This // simply enters an infinite loop, preserving the system state for examination // by a debugger. // //************************************************************************* static void NmiSR(void) [ // // Enter an infinite loop. // while(1) [ ] ] //************************************************************************* // // This is the code that gets called when the processor receives a fault // interrupt. This simply enters an infinite loop, preserving the system state // for examination by a debugger. // //************************************************************************* static void FaultISR(void) [ // // Enter an infinite loop. // while(1) [ ] ] //************************************************************************* // // This is the code that gets called when the processor receives an unexpected // interrupt. This simply enters an infinite loop, preserving the system state // for examination by a debugger. // //*************************************************************************** static void IntDefaultHandler(void) [ // // Go into an infinite loop. // while(1) [ ] ] 0
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答案对人有帮助，有参考价值 0 fanhuaming : ROM_SysCtlPeripheralEnable(); //使能端口 ROM_GPIOPadConfigSet(); //设置PAD模式 ROM_GPIODirModeSet(); //设置管脚工作模式 ROM_GPIOIntTypeSet(); //中断优先级 ROM_GPIOPinIntEnable() //使能管脚中断 ROM_IntEnable() //使能端口中断 ROM_IntMasterEnable(); //总中断另建议别贴大段代码，把自己分析的认为有问题的代码贴出即可

2018-6-21 15:17:33 评论举报刘雪映