SCI driver sample code / documentation

Thanks Chris, Thanks Trey,

for your time. It was mainly a beginners error: I had to realize the concept of mapping the controller's registers into the sci struct first, so this was the crucial change:

SCI_init((void *)SCIA_BASE_ADDR, sizeof(SCI_Obj));

Sorry for that...

Dear all,

I am new to Instaspin. I already gone through to lab example. i want to implement SCI-A and SCI-B communication for my own board software for 28069F. There is no any example code of SCI in motorware. Have you any reference code for this for start up my implementation? its really very helpful to me.

Hello, 

I am new too and I had the similar question before.

This was the thread that I posted:

http://e2e.ti.com/support/microcontrollers/c2000/f/902/p/279598/976170.aspx#976170

Hope this is helpful for you to start. So far I have success to have SCI communication in Motorware project.

If you are also new in TI microcontroller just like me, you also can see SCI example in \controlSUITE\device_support\f2806x\v136\F2806x_examples_ccsv5\sci_echoback. In this case, you need to install controlSUITE in your PC.

Hope this helps.

Best regards,

Maria

Dear all,

Thank you for your reply.

I gone through this thread and based I implement SCI B communication and added new function which not available in motorware. But I face some problem regarding interrupt generation. SCI B received interrupt generated only once time and then not generating interrupt regular. I think still something missing in my code. Here I snap of my code. If you have any idea please help.

DRV_Handle DRV_init(void *pMemory,const size_t numBytes)

{

………………

obj->sciaHandle = SCI_init((void *) SCIA_BASE_ADDR, sizeof(SCI_Obj));

obj->scibHandle = SCI_init((void *) SCIB_BASE_ADDR, sizeof(SCI_Obj));

}

void DRV_setupscib(DRV_Handle handle)

{

DRV_Obj *obj = (DRV_Obj *)handle;

// Initiate SCI reset

SCI_enable(obj->scibHandle);

SCI_reset(obj->scibHandle);

SCI_enable(obj->scibHandle);

// Initialize SCI Comm. Control Register

SCI_setCharLength(obj->scibHandle,SCI_CharLength_8_Bits);

SCI_setMode(obj->scibHandle,SCI_Mode_IdleLine);

SCI_disableLoopBack(obj->scibHandle);

SCI_enableParity(obj->scibHandle);

SCI_setParity(obj->scibHandle,SCI_Parity_Odd);

SCI_setNumStopBits(obj->scibHandle,SCI_NumStopBits_One);

// Initialize SCI Control Register 1

SCI_enableRx(obj->scibHandle);

SCI_enableTx(obj->scibHandle);

SCI_disableSleep(obj->scibHandle);

SCI_disableTxWake(obj->scibHandle);

SCI_disableRxErrorInt(obj->scibHandle);

// Select Baud Rate

SCI_setBaudRate(obj->scibHandle,SCI_BaudRate_9600_Baud);

// Initialize SCI Control Register 2

SCI_disableTxInt(obj->scibHandle);

SCI_enableRxInt(obj->scibHandle);

// Initialize SCI Priority Control Register

SCI_setPriority(obj->scibHandle,SCI_Priority_FreeRun);

SCI_setPriority(obj->scibHandle,SCI_Priority_AfterRxRxSeq);

// Initialize SCI Tx & Rx FIFO Register

SCI_disableTxFifoEnh(obj->scibHandle);

return;

} // end of DRV_setupscib() function

/************************************************************/

void DRV_enablesciints(DRV_Handle handle)

{

DRV_Obj *obj = (DRV_Obj *)handle;

PIE_enablesciInt(obj->pieHandle);

// enable the cpu interrupt for SCI A & B interrupts

CPU_enableInt(obj->cpuHandle,CPU_IntNumber_9);

return;

} // end of DRV_enablesciints() function

/************************************************************/

void PIE_enablesciInt(PIE_Handle pieHandle)

{

PIE_Obj *pie = (PIE_Obj *)pieHandle;

uint16_t index;

index = 8;

pie->PIEIER_PIEIFR[index].IER |= 1; //SCIRXINTA

pie->PIEIER_PIEIFR[index].IER |= 1<<1; //SCITXINTA

pie->PIEIER_PIEIFR[index].IER |= 1<<2; //SCIRXINTB

pie->PIEIER_PIEIFR[index].IER |= 1<<3; //SCITXINTB

return;

} // end of PIE_enableAdcInt() function

/************************************************************/

interrupt void SCIRXINTB_ISR(void) // SCI-B

{

DSXM;

scib_rx_interupt_service(); //data received routine

SXM;

DRV_acqsciInt(drvHandle);

}

/*********************************************************/

static inline void DRV_acqsciInt(DRV_Handle handle)

{

DRV_Obj *obj = (DRV_Obj *)handle;

// Acknowledge interrupt from PIE group 10

PIE_clearInt(obj->pieHandle,PIE_GroupNumber_9);

return;

} // end of DRV_acqsciInt() function

Thank you maria,

Resolve the problem.

Suprit