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SCI and SPI problem using C2000 Launchpad

gchaconr
Intellectual 645 points

Other Parts Discussed in Thread: TMS320F28027, CONTROLSUITE

Hi, I am using the C2000 LaunchPad (TMS320F28027) for communication purposes using SPI and SCI ports.

I have successfully compiled the examples from controlSUITE (controlSUITE\device_support\f2802x\v129\DSP2802x_examples_ccsv4) using CCSv6, and have also debugged them loading the code into the RAM.

The examples that I am trying are sci_echoback and spi_loopback, which I have modified in order to send data to an Arduino Uno board. The problem that I ma facing is that the data that the Arduino receives is always the same, although is change over time.

I have already checked all the register of TMS320F28027 and they seem to be fine.

Any suggestion in order to solve this problem?

Thanks in advance for any help you could provide.

Best regards,

Gus.

  • 0
    Guru 192875 points
    Hi Gus,

    The problem that I ma facing is that the data that the Arduino receives is always the same, although is change over time.

    Can you explain the above statement in more detail?

    Regards,
    Gautam
  • 0 in reply to Gautam Iyer
    Intellectual 645 points
    Hi Gautam,

    What i meant in that statement is that overtime the data that the TMS320F28027 is transmitting changes every second (e.g. send first '1', and after one second it transmits '2', and so on ). The data received by the computer is always 250 in decimals (not even a readable charatecter).

    Best regards,
    Gus