TIDM-HV-1PH-DCAC: SFRA connection Problem

Sivarajan,

Apologies for delay response!

There is a sfra example in "C2000Ware_DigitalPower_SDK_xx\libraries\sfra\examples" for this f280049 device - You can try out connecting GUI with that and let me know it is working or not after selecting correct COM port and baud rate

I believe "#define SCI_VBUS_CLK 50000000" need to be used

Can you provide more info on what speed these following functions are called?
SFRA_F32_runBackgroundTask()
SFRA_GUI_runSerialHostComms()

Thanks & Regards,

Shashank

Hi Shashank,

The following is set in TIDM-HV-1PH-DCAC project that I am using.

#define SFRA_GUI_SCI_BASE               SCIA_BASE

#define SFRA_GUI_SCIRX_GPIO             28

#define SFRA_GUI_SCIRX_GPIO_PIN_CONFIG  GPIO_28_SCIRXDA

#define SFRA_GUI_SCITX_GPIO             29

#define SFRA_GUI_SCITX_GPIO_PIN_CONFIG  GPIO_29_SCITXDA

#define SCI_VBUS_CLK 25000000 ( to be changed to 50000000 ?)

#define SFRA_GUI_SCI_BAUDRATE 57600

My question is

1. Can the jtag connection be used to get data of SFRA or need to use SCIRX AND SCITX AS DEFINED ABOVE.
2. IF SCIRX AND SCITX  is used then can I use “ttl to usb UART CONVERTER” to get data of SFRA IN PC.
3. Can sci be used as UART?

For

SFRA_F32_runBackgroundTask()
SFRA_GUI_runSerialHostComms()

It is called from task A1 which is 1ms

/////////////////////////////////////////////////////////

void A1(void) // 1ms

//--------------------------------------------------------

{

#if(INCR_BUILD==1)||(INCR_BUILD==2)||(INCR_BUILD==3)

    if(rlyConnect==1)

    {

    //    closeRelay();

    }

    else

    {

  //      openRelay();

        invVoRef = 0;

        invIiRef = 0;

    }

#endif

    SFRA_GUI_runSerialHostComms(&sfra1);

    SFRA_F32_runBackgroundTask(&sfra1);

////////////////////////////////////////////////////////////////////////

Regards,

Sivarajan

Sivarajan,

Need to use SFRA TX and RX as defined above only to plot in SFRA GUI tool.

You can get SFRA data without using GUI too, which is mentioned in the documentation through expression window of CCS - "https://www.ti.com/lit/ug/spruik4a/spruik4a.pdf" chapter 7.

SCI and UART are using the same baseline command protocol, but this GUI tool has low level driver APIs used for SCI and not for UART. 

Thanks & Regards,

Shashank

Hi Shashank,

thanks for your quick and informative response.

As mentioned earlier I am using the Rx Tx and using a ttl to usb converter to plot the graph , but I cannot connect. What hardware and driver need to be used to get this sci data in usb port? Please help to resolve.

Regards 

Sivarajan