Multi-slave SPI

[Hildy]

In SPIConfig, there is a field for CS port and line, which is saved for later use with spiSelect(). This works well with a single slave, but if I want to use SPI as a bus (with one CS line per slave and the other lines shared) I'm not sure how to stop spiSelect() from asserting the same one each time.

[Giovanni]

Hi,

Just define multiple configuration structures, each one defining its own CS and communication parameters, then use spiStart() to switch among configurations, you don't need to perform a spiStop(), just spiStart().

Giovanni

[Hildy]

Thanks for getting back to me so quick!

Is there any way to use SPI0 on the LPC2148? The lld code seems to be written for the SSP (ie SPI1).

[Giovanni]

Hi,

It is written for the SSP only, use the SPI should be possible but would require a rework in the driver.

Giovanni