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imx 233 SPI communication

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imx 233 SPI communication

‎03-29-2011 07:46 PM
1,368 Views
ssankar
Contributor I

In imx233 documentation

The SPI bus is inherently a full-duplex bidirectional interface. However, the i.MX23 has a single DMA channel for SSP; therefore, the SSP must be programmed for either transmit or receive. In receive mode, the SSP continuously transfers the word written to its data register. In transmit mode, the SSP ignores incoming data.

i need to communicate with SPI half duplex means how to start, can anybody help on this

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‎04-04-2011 09:16 PM
1,006 Views
Balaji_ng
Contributor III

Hi,

     You may use the bitbanged SPI interface. It doesnt require any DMA. You will not be finding any major difference functionally.

Regards,

Balaji

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