TI中文支持网Part Number:TMS320F28388D
我在TMS320F28388D controlCARD进行开发，将sci_ex2_loopback_interrupts.c的例程改为以下，但是无法进入接收中断，请问是为什么？
//###########################################################################
//
// FILE:sci_ex2_loopback_interrupts.c
//
// TITLE: SCI Digital Loop Back with Interrupts.
//
//! \addtogroup driver_example_list
//! <h1> SCI Digital Loop Back with Interrupts </h1>
//!
//! This test uses the internal loop back test mode of the peripheral.
//! Other then boot mode pin configuration, no other hardware configuration
//! is required. Both interrupts and the SCI FIFOs are used.
//!
//! A stream of data is sent and then compared to the received stream.
//! The SCI-A sent data looks like this: \n
//! 00 01 \n
//! 01 02 \n
//! 02 03 \n
//! .... \n
//! FE FF \n
//! FF 00 \n
//! etc.. \n
//! The pattern is repeated forever.
//!
//! \b Watch \b Variables \n
//! - \b sDataA - Data being sent
//! - \b rDataA - Data received
//! - \b rDataPointA - Keep track of where we are in the data stream.
//!This is used to check the incoming data
//!
//
//###########################################################################
//
//
// $Copyright: $
//###########################################################################
//
// Included Files
//
#include "driverlib.h"
#include "device.h"
//
// Globals
//
//
// Send data for SCI-A
//
uint16_t sDataA[2];
//
// Received data for SCI-A
//
uint16_t rDataA[2];
//
// Used for checking the received data
//
uint16_t rDataPointA;
//
// Function Prototypes
//
__interrupt void sciaTXFIFOISR(void);
__interrupt void sciaRXFIFOISR(void);
void initSCIAFIFO(void);
void error(void);
//
// Main
//
void main(void)
{uint16_t i;//// Initialize device clock and peripherals//Device_init();//// Setup GPIO by disabling pin locks and enabling pullups//Device_initGPIO();//// GPIO28 is the SCI Rx pin.//GPIO_setMasterCore(DEVICE_GPIO_PIN_SCIRXDA, GPIO_CORE_CPU1);GPIO_setPinConfig(DEVICE_GPIO_CFG_SCIRXDA);GPIO_setDirectionMode(DEVICE_GPIO_PIN_SCIRXDA, GPIO_DIR_MODE_IN);GPIO_setPadConfig(DEVICE_GPIO_PIN_SCIRXDA, GPIO_PIN_TYPE_STD);GPIO_setQualificationMode(DEVICE_GPIO_PIN_SCIRXDA, GPIO_QUAL_ASYNC);//// GPIO29 is the SCI Tx pin.//GPIO_setMasterCore(DEVICE_GPIO_PIN_SCITXDA, GPIO_CORE_CPU1);GPIO_setPinConfig(DEVICE_GPIO_CFG_SCITXDA);GPIO_setDirectionMode(DEVICE_GPIO_PIN_SCITXDA, GPIO_DIR_MODE_OUT);GPIO_setPadConfig(DEVICE_GPIO_PIN_SCITXDA, GPIO_PIN_TYPE_STD);GPIO_setQualificationMode(DEVICE_GPIO_PIN_SCITXDA, GPIO_QUAL_ASYNC);//// Initialize PIE and clear PIE registers. Disables CPU interrupts.//Interrupt_initModule();//// Initialize the PIE vector table with pointers to the shell Interrupt// Service Routines (ISR).//Interrupt_initVectorTable();//// Interrupts that are used in this example are re-mapped to// ISR functions found within this file.//Interrupt_register(INT_SCIA_RX, sciaRXFIFOISR);
//Interrupt_register(INT_SCIA_TX, sciaTXFIFOISR);//// Initialize the Device Peripherals://initSCIAFIFO();//// Init the send data. After each transmission this data// will be updated for the next transmission//for(i = 0; i < 2; i++){sDataA[i] = i;}rDataPointA = sDataA[0];Interrupt_enable(INT_SCIA_RX);
//Interrupt_enable(INT_SCIA_TX);Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP9);//// Enable Global Interrupt (INTM) and realtime interrupt (DBGM)//EINT;ERTM;//// IDLE loop. Just sit and loop forever (optional)://for(;;);
}
//
// error - Function to halt debugger on error
//
void error(void)
{asm("ESTOP0"); // Test failed!! Stop!for (;;);
}
//
// sciaTXFIFOISR - SCIA Transmit FIFO ISR
//
__interrupt void sciaTXFIFOISR(void)
{uint16_t i;SCI_writeCharArray(SCIA_BASE, sDataA, 2);//// Increment send data for next cycle//for(i = 0; i < 2; i++){sDataA[i] = (sDataA[i] + 1) & 0x00FF;}SCI_clearInterruptStatus(SCIA_BASE, SCI_INT_TXFF);//// Issue PIE ACK//Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP9);
}
//
// sciaRXFIFOISR - SCIA Receive FIFO ISR
//
__interrupt void sciaRXFIFOISR(void)
{uint16_t i;SCI_readCharArray(SCIA_BASE, rDataA, 2);//// Check received data//
//for(i = 0; i < 2; i++)
//{
//if(rDataA[i] != ((rDataPointA + i) & 0x00FF))
//{
//error();
//}
//}rDataPointA = (rDataPointA + 1) & 0x00FF;SCI_clearOverflowStatus(SCIA_BASE);SCI_clearInterruptStatus(SCIA_BASE, SCI_INT_RXFF);//// Issue PIE ack//Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP9);
}
//
// initSCIAFIFO - Configure SCIA FIFO
//
void initSCIAFIFO()
{//// 8 char bits, 1 stop bit, no parity. Baud rate is 9600.//SCI_setConfig(SCIA_BASE, DEVICE_LSPCLK_FREQ, 9600, (SCI_CONFIG_WLEN_8 |SCI_CONFIG_STOP_ONE |SCI_CONFIG_PAR_NONE));SCI_enableModule(SCIA_BASE);SCI_disableLoopback(SCIA_BASE);SCI_resetChannels(SCIA_BASE);SCI_enableFIFO(SCIA_BASE);//// RX and TX FIFO Interrupts Enabled//SCI_enableInterrupt(SCIA_BASE, SCI_INT_RXFF);SCI_disableInterrupt(SCIA_BASE, SCI_INT_RXERR);//// The transmit FIFO generates an interrupt when FIFO status// bits are less than or equal to 2 out of 16 words// The receive FIFO generates an interrupt when FIFO status// bits are greater than equal to 2 out of 16 words//SCI_setFIFOInterruptLevel(SCIA_BASE, SCI_FIFO_TX2, SCI_FIFO_RX2);SCI_performSoftwareReset(SCIA_BASE);
//SCI_resetTxFIFO(SCIA_BASE);SCI_resetRxFIFO(SCIA_BASE);
}
//
// End of file
//
Green Deng：
烦请标明例程中具体修改的点有哪些。
,
user6327524：
//########################################################################### // // FILE:sci_ex2_loopback_interrupts.c // // TITLE:SCI Digital Loop Back with Interrupts. // //! \addtogroup driver_example_list //! <h1> SCI Digital Loop Back with Interrupts </h1> //! //!This test uses the internal loop back test mode of the peripheral. //!Other then boot mode pin configuration, no other hardware configuration //!is required. Both interrupts and the SCI FIFOs are used. //! //!A stream of data is sent and then compared to the received stream. //!The SCI-A sent data looks like this: \n //!00 01 \n //!01 02 \n //!02 03 \n //!.... \n //!FE FF \n //!FF 00 \n //!etc.. \n //!The pattern is repeated forever. //! //!\b Watch \b Variables \n //!- \b sDataA - Data being sent //!- \b rDataA - Data received //!- \b rDataPointA - Keep track of where we are in the data stream. //!This is used to check the incoming data //! // //########################################################################### // // // $Copyright: $ //###########################################################################// // Included Files // #include "driverlib.h" #include "device.h"// // Globals //// // Send data for SCI-A // uint16_t sDataA[2];// // Received data for SCI-A // uint16_t rDataA[2];// // Used for checking the received data // uint16_t rDataPointA;// // Function Prototypes // __interrupt void sciaTXFIFOISR(void); __interrupt void sciaRXFIFOISR(void); void initSCIAFIFO(void); void error(void);// // Main // void main(void) {uint16_t i;//// Initialize device clock and peripherals//Device_init();//// Setup GPIO by disabling pin locks and enabling pullups//Device_initGPIO();//// GPIO28 is the SCI Rx pin.//GPIO_setMasterCore(DEVICE_GPIO_PIN_SCIRXDA, GPIO_CORE_CPU1);GPIO_setPinConfig(DEVICE_GPIO_CFG_SCIRXDA);GPIO_setDirectionMode(DEVICE_GPIO_PIN_SCIRXDA, GPIO_DIR_MODE_IN);GPIO_setPadConfig(DEVICE_GPIO_PIN_SCIRXDA, GPIO_PIN_TYPE_STD);GPIO_setQualificationMode(DEVICE_GPIO_PIN_SCIRXDA, GPIO_QUAL_ASYNC);//// GPIO29 is the SCI Tx pin.//GPIO_setMasterCore(DEVICE_GPIO_PIN_SCITXDA, GPIO_CORE_CPU1);GPIO_setPinConfig(DEVICE_GPIO_CFG_SCITXDA);GPIO_setDirectionMode(DEVICE_GPIO_PIN_SCITXDA, GPIO_DIR_MODE_OUT);GPIO_setPadConfig(DEVICE_GPIO_PIN_SCITXDA, GPIO_PIN_TYPE_STD);GPIO_setQualificationMode(DEVICE_GPIO_PIN_SCITXDA, GPIO_QUAL_ASYNC);//// Initialize PIE and clear PIE registers. Disables CPU interrupts.//Interrupt_initModule();//// Initialize the PIE vector table with pointers to the shell Interrupt// Service Routines (ISR).//Interrupt_initVectorTable();//// Interrupts that are used in this example are re-mapped to// ISR functions found within this file.//Interrupt_register(INT_SCIA_RX, sciaRXFIFOISR); //注释掉Interrupt_register(INT_SCIA_TX, sciaTXFIFOISR);//// Initialize the Device Peripherals://initSCIAFIFO();//// Init the send data.After each transmission this data// will be updated for the next transmission//for(i = 0; i < 2; i++){sDataA[i] = i;}rDataPointA = sDataA[0];Interrupt_enable(INT_SCIA_RX); //注释掉Interrupt_enable(INT_SCIA_TX);Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP9);//// Enable Global Interrupt (INTM) and realtime interrupt (DBGM)//EINT;ERTM;//// IDLE loop. Just sit and loop forever (optional)://for(;;); }// // error - Function to halt debugger on error // void error(void) {asm("ESTOP0"); // Test failed!! Stop!for (;;); }// // sciaTXFIFOISR - SCIA Transmit FIFO ISR // __interrupt void sciaTXFIFOISR(void) {uint16_t i;SCI_writeCharArray(SCIA_BASE, sDataA, 2);//// Increment send data for next cycle//for(i = 0; i < 2; i++){sDataA[i] = (sDataA[i] + 1) & 0x00FF;}SCI_clearInterruptStatus(SCIA_BASE, SCI_INT_TXFF);//// Issue PIE ACK//Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP9); }// // sciaRXFIFOISR - SCIA Receive FIFO ISR // __interrupt void sciaRXFIFOISR(void) {uint16_t i;SCI_readCharArray(SCIA_BASE, rDataA, 2);//// Check received data// //for(i = 0; i < 2; i++) //{ //if(rDataA[i] != ((rDataPointA + i) & 0x00FF)) //{ //error(); //} //}rDataPointA = (rDataPointA + 1) & 0x00FF;SCI_clearOverflowStatus(SCIA_BASE);SCI_clearInterruptStatus(SCIA_BASE, SCI_INT_RXFF);//// Issue PIE ack//Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP9); }// // initSCIAFIFO - Configure SCIA FIFO // void initSCIAFIFO() {//// 8 char bits, 1 stop bit, no parity. Baud rate is 9600.//SCI_setConfig(SCIA_BASE, DEVICE_LSPCLK_FREQ, 9600, (SCI_CONFIG_WLEN_8 |SCI_CONFIG_STOP_ONE |SCI_CONFIG_PAR_NONE));SCI_enableModule(SCIA_BASE);SCI_disableLoopback(SCIA_BASE); //将enable 改为 disableSCI_resetChannels(SCIA_BASE);SCI_enableFIFO(SCIA_BASE);//// RX and TX FIFO Interrupts Enabled//SCI_enableInterrupt(SCIA_BASE, SCI_INT_RXFF);//去掉| SCI_INT_TXFFSCI_disableInterrupt(SCIA_BASE, SCI_INT_RXERR);//// The transmit FIFO generates an interrupt when FIFO status// bits are less than or equal to 2 out of 16 words// The receive FIFO generates an interrupt when FIFO status// bits are greater than equal to 2 out of 16 words//SCI_setFIFOInterruptLevel(SCIA_BASE, SCI_FIFO_TX2, SCI_FIFO_RX2);SCI_performSoftwareReset(SCIA_BASE);//注释掉SCI_resetTxFIFO(SCIA_BASE);SCI_resetRxFIFO(SCIA_BASE); }// // End of file //好的好的，具体如上，主要是将Loopback功能取消了，然后注释掉了发送中断相关的指令，具体已在代码中中文备注
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user6327524：
您好，问题解决了，是我在硬件上没有将S1置为ON的状态
,
Green Deng：
好的，感谢反馈
