CCS/TMS320F28035: SCI Interface

Thanks a lot for the response. I downloaded the SDK and installed it in my PC. I didnt find any folder related to DRV8301. Also I didnt find hal.c/hal.h.

Does this sdk support my kit drv8301?

hi Teja,

Looks like you are right . It was available in one of the earlier versions of the tool but seems to have been removed now.

Will check internally and get back.

Regards.

hi Teja,

Looks like the example was pulled down and replaced with example for DRV8320 BoosterPack .

MotorControl_SDK\solutions\boostxl_drv8320rs\f28004x\drivers\source should have the same files as was available for the DRV8301.

Also I believe that you are looking some a general SCI example for data communication between the F2803x and another device.

Please refer to the examples on the C2000ware.

C2000Ware\device_support\f2803x\examples\c28\ sci*

Regards.

In one of the test cases, I sent 1 to the controller and when checked (in debug mode) watch variable, the following was displayed (SCIRXBUF):

Name : RXDT
    Default:49
    Hex:0x31
    Decimal:49
    Octal:061
    Binary:00110001b

Immediatly after reading the SCIRXBUF, it has to be resetted. Instead the RXDT value is as follows:

Name : RXDT
    Default:50
    Hex:0x32
    Decimal:50
    Octal:062
    Binary:00110010b

But in my hyperterminal, the value 1 got displayed. Can you help me with this. Am I missing something?

Please help.

Thankyou.

Hi Teja ,

Are you checking the sci echoback?

If you are using the echoback example then you are seeing the right results 

Since the char "1" in ascii is equivalent to 0x31 in hex and you see "1" on the hyper terminal.

Is there any increment of the buffer data  in the code because of which you are seeing the 0x2 in the RX ?  or is this the existing example ?

Regard.

Yes, Im checking sci echo. Thanks a lot for the help. Regarding 0x2, I. not incrementing the data. I did not edit the program...

I dono why SCIRXBUF value is not getting reset immediately after reading the data.

Please help and thank you

hi,

Sorry for the delay in response .

Were you able to make progress on this ?

Regards.

I'm still facing the problem with SCIRXBUF. The value is not getting reset immediately after reading data. Kindly help and thankyou

Teja,

The SCIRXBUF does not get cleared or reset after being read; it gets written over when the next character is received.  The RXRDY is cleared by a reading of the SCIRXBUF register.  Please see the SCI chapter in the F2803x Technical Reference Manual (TRM) for more details.

I hope this helps. If this answers your question, please click the green "Verified Answer" button. Thanks.

- Ken