Other Parts Discussed in Thread: SYSBIOS
Tool/software: Code Composer Studio
My SCI interrupt only enter one time when i use SYSBIOS. I configured my HWI through *.cfg file.
The following is my code.
#include "driverlib.h"
#include "device.h"
//#include <xdc/std.h>
//#include <xdc/runtime/Log.h>
#include <ti/sysbios/BIOS.h>
#include <ti/sysbios/knl/Task.h>
#include <ti/sysbios/knl/Semaphore.h>
#include <ti/sysbios/family/c28/Hwi.h>
#include "cpsFIFO.h"
//#include <xdc/runtime/Error.h>
//#include <xdc/runtime/System.h>
// Prototype statements for functions found within this file.
interrupt void sciaTxFifoIsr(void);
interrupt void sciaRxFifoIsr(void);
void scia_fifo_init(void);
static uint16_t tickCount = 0;
/*
* ======== main ========
*/
Int main()
{
/*
* Print "Hello world" to a log buffer.
*/
//Log_info0("Hello world\n");
// Step 2. Initialize GPIO:
// This example function is found in the F2837xD_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
//SysCtl_disableWatchdog();
Device_enableAllPeripherals();
//
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
//
// GPIO43 is the SCI Rx pin.
//
GPIO_setMasterCore(43, GPIO_CORE_CPU1);
GPIO_setPinConfig(GPIO_43_SCIRXDA);
GPIO_setDirectionMode(43, GPIO_DIR_MODE_IN);
GPIO_setPadConfig(43, GPIO_PIN_TYPE_STD);
GPIO_setQualificationMode(43, GPIO_QUAL_ASYNC);
//
// GPIO42 is the SCI Tx pin.
//
GPIO_setMasterCore(42, GPIO_CORE_CPU1);
GPIO_setPinConfig(GPIO_42_SCITXDA);
GPIO_setDirectionMode(42, GPIO_DIR_MODE_OUT);
GPIO_setPadConfig(42, GPIO_PIN_TYPE_STD);
GPIO_setQualificationMode(42, GPIO_QUAL_ASYNC);
scia_fifo_init();
//Interrupt_enable(INT_SCIA_RX);
//Interrupt_enable(INT_SCIA_TX);
Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP9);
/*
* Start BIOS.
* Begins task scheduling.
*/
BIOS_start(); /* does not return */
return(0);
}
void myTickFxn(void)
{
tickCount++;
}
void delay(Uint32 n)
{
while(n--)
__asm("nop");
}
void sciaTaskFnx()
{
int len = 4;
Uint16 data[4];
//hwSerialPortInit(SCIA_COM0);
while(1)
{
DEVICE_DELAY_US(1000*2);
}
}
interrupt void sciaTxFifoIsr(void)
{
//UARTTxISR(SCIA_COM0);
Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP9);
}
interrupt void sciaRxFifoIsr(void)
{
uint16_t rDataA = 0;
//UARTRxISR(SCIA_COM0);
if(SCI_isDataAvailableNonFIFO(SCIA_BASE))
{
SCI_readCharArray(SCIA_BASE, &rDataA, 1);
}
SCI_clearOverflowStatus(SCIA_BASE);
SCI_clearInterruptStatus(SCIA_BASE, SCI_INT_RXRDY_BRKDT);
Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP9);
}
void scia_fifo_init()
{
//
// 8 char bits, 1 stop bit, no parity. Baud rate is 115200.
//
SCI_setConfig(SCIA_BASE, DEVICE_LSPCLK_FREQ, 115200, (SCI_CONFIG_WLEN_8 |
SCI_CONFIG_STOP_ONE |
SCI_CONFIG_PAR_NONE));
SCI_enableModule(SCIA_BASE);
SCI_resetChannels(SCIA_BASE);
SCI_enableInterrupt(SCIA_BASE, (SCI_INT_RXRDY_BRKDT | SCI_INT_TXRDY));
SCI_disableInterrupt(SCIA_BASE, SCI_INT_RXERR);
SCI_performSoftwareReset(SCIA_BASE);
}
I set breakpoint at the sciaRxFifoIsr function, and noticed that ISR only entered once. then ISR can't enter anyway. Can anyone help me to figure out where the problem is?
