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SPI Registers value equal value placed in the transmit buffer on OMAP L138

Frank LoPinto
Prodigy 10 points

So I'm using an OMAP L138 whose SPI1 bus is connected to a Holt HI-3593 429 Transmitter/Receiver.

When receiving data, I'm writing a command to the SPI1 transmit buffer (SPIDAT1) but when I read the recive buffer SPIBUF (SPIEMU) after this I get the same value as I placed in SPIDAT1.

What does such a result indicate?