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Unable to sense SPI0 output on L138 LCDK header pins

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Hi,

I am attempting to use the L138 as an SPI controller for an external device. I am looking to use the SPI0 peripheral's output pins. I am tweaking the SPI Example CSL project, which demonstrates the SPI0 in loopback mode. In the example projects original state, the SPI is in loopback mode (SPI_SPIGCR1_LOOPBACK = 1). When I disable loopback mode by setting SPI_SPIGCR1_LOOPBACK to 0, I expect to see output on the SPI0 pins. When I disable loopback mode, i notice that the loopback test fails (expected), but I still do not see any output on the SPI0 pins.

I found in the schematic that R214, R215, R216, R217 is not populated. I populated R214-217 with 0 Ohm resistors and removed R184, R179, R216, R217. I still do not see any output on the SPI0 pins (J15 pins 21, 23, 25, 27).

How do I modify the example code to output the SPI0 signals to the output pins? Please advise.

Best,

Miron


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