很好 谢谢楼主

很详细 谢谢楼主

:)有用

他第一次是怎么进入中断的呢，一直没搞懂

讨论讨论

#include "DSP28x_Project.h"     // Device Headerfile and Examples Include File #define CPU_FREQ          150E6 #define LSPCLK_FREQ  CPU_FREQ/4 #define SCI_FREQ          100E3 #define SCI_PRD          (LSPCLK_FREQ/(SCI_FREQ*8))-1 // Prototype statements for functions found within this file. interrupt void sciaTxFifoIsr(void); interrupt void sciaRxFifoIsr(void); interrupt void scibTxFifoIsr(void); interrupt void scibRxFifoIsr(void); void scia_fifo_init(void); void scib_fifo_init(void); void error(void); // Global variables Uint16 sdataA[8];    // Send data for SCI-A Uint16 sdataB[8];    // Send data for SCI-B Uint16 rdataA[8];    // Received data for SCI-A Uint16 rdataB[8];    // Received data for SCI-A Uint16 rdata_pointA; // Used for checking the received data Uint16 rdata_pointB; void main(void) {    Uint16 i; // Step 1. Initialize System Control: // PLL, WatchDog, enable Peripheral Clocks // This example function is found in the DSP2833x_SysCtrl.c file.    InitSysCtrl(); // Step 2. Initalize GPIO: // This example function is found in the DSP2833x_Gpio.c file and // illustrates how to set the GPIO to it's default state. // InitGpio(); // Setup only the GP I/O only for SCI-A and SCI-B functionality // This function is found in DSP2833x_Sci.c    InitSciGpio(); // Step 3. Clear all interrupts and initialize PIE vector table: // Disable CPU interrupts    DINT; // Initialize PIE control registers to their default state. // The default state is all PIE interrupts disabled and flags // are cleared. // This function is found in the DSP2833x_PieCtrl.c file.    InitPieCtrl(); // Disable CPU interrupts and clear all CPU interrupt flags:    IER = 0x0000;    IFR = 0x0000; // Initialize the PIE vector table with pointers to the shell Interrupt // Service Routines (ISR). // This will populate the entire table, even if the interrupt // is not used in this example.  This is useful for debug purposes. // The shell ISR routines are found in DSP2833x_DefaultIsr.c. // This function is found in DSP2833x_PieVect.c.    InitPieVectTable(); // Interrupts that are used in this example are re-mapped to // ISR functions found within this file.    EALLOW;        // This is needed to write to EALLOW protected registers    PieVectTable.SCIRXINTA = &sciaRxFifoIsr;    PieVectTable.SCITXINTA = &sciaTxFifoIsr;    PieVectTable.SCIRXINTB = &scibRxFifoIsr;    PieVectTable.SCITXINTB = &scibTxFifoIsr;    EDIS;   // This is needed to disable write to EALLOW protected registers // Step 4. Initialize all the Device Peripherals: // This function is found in DSP2833x_InitPeripherals.c // InitPeripherals(); // Not required for this example    scia_fifo_init();  // Init SCI-A    scib_fifo_init();  // Init SCI-B // Step 5. User specific code, enable interrupts: // Init send data.  After each transmission this data // will be updated for the next transmission    for(i = 0; i

不:)错不错

nemo1991 发表于 2015-4-3 10:32 是的啊。 要习惯看图！

你好 我是初学 能讲讲这个是怎么进入中断的吗 看了框图还是不太懂 谢谢了