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CC3100BOOST: CC3100 initialization/SPI interface issue

Part Number: CC3100BOOST
Other Parts Discussed in Thread: CC3100

Hi ,

    I am interfacing CC3100 with Movidius board over SPI interface. I have followed simplelink porting guide, in order to integrate driver to Movidius SDK.

To verify the SPI interface, i am running spi_debug_tool example, but facing issues during read. Please find detailed steps which are performed as part of spi_debug_tool.

1) Initialized the SPI interface and registered interrupt handler(no issues)

2) Device disable and enable - nHIB(no issues)

3) IRQ check (no issues, received interrupt)

4) Write SYNC pattern 0x87657856 (no issues)

5) Later i am trying to read and search for the pattern, which is not successful. I have captured the waveform and looks like SPI MISO line is toggling multiple times in one clock cycle.

Why CC3100 module is behaving like this ? Am i missing anything? Any inputs will be really helpful. Please find attached waveforms.