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CCS/TMS320F2812: how to access data from spirxbuf to flash memory

Jeyapaul K
Prodigy 80 points
Part Number: TMS320F2812
Other Parts Discussed in Thread: DDC118,

Tool/software: Code Composer Studio

Dear all

       I am using CCS 6.2 with  tms320f2812 interfaced to ddc118 by spi communication, I got the  physical output  signal by oscilloscope , but in the processor registers (SPIDAT, SPIRXBUF) always shows 0xFFFF and other registers SPISTS working fine (0x0400). So, kindly give the help for  access the data from SPIRXBUF to flash memory for further processing.

Jeyapaul

  • 0
    Guru 30330 points
    Jeyapaul,

    Have you verified you GPIO mux configuration? Be sure to include the EALLOW instruction to unlock the GPIO control Registers. Also, verify that your pins are properly connected. Assuming the DDC118 is the SPI Slave, ensure that the DIN is connected to SPISIMO, and DOUT is connected to SPISOMI.

    Thats at least the first thing to check. If you can share an oscilloscope image of the transactions with the signal lines clearly labeled, it might help.