SPI interface

talmor zilberman

Expert 1160 points

Other Parts Discussed in Thread: CC2500

I'm working with the C5515 EVM and I'm trying to read the part number from Transciever (cc250) via SPI bus.

from some reason my code doesn't seem to work .

can someone send me an example code for DSP SPI interface?

Thanks in advanced

Talmor

0 Mark M over 14 years ago

Hi Talmor,

Have a look at the Chip Support Library examples for the SPI peripheral: http://focus.ti.com/docs/toolsw/folders/print/sprc133.html

Once installed the example is located under TMS320C55XXCSL-LOWPWR\c55xx_csl\ccs_v4.0_examples\spi\CSL_SPI_Example\

Hope this helps,
Mark

0 talmor zilberman over 14 years ago in reply to Mark M

Expert 1160 points

This example is running on the DSP BIOS enviroment

0 talmor zilberman over 14 years ago in reply to talmor zilberman

Expert 1160 points

According to the cc2500 data sheet CSn pin has to be toggled before sending the reset STROBE to via SPI bus.

I'm writing the code on the EVM c5515 DSP . should I toggle the CSn of teh DSP side or it happened automaticaly once I'm sending the strobe command

Thanks

Talmor

0 Peter Chung over 14 years ago in reply to talmor zilberman

Talmor,

Based on frame size, CS pin will be automatically toggled. In order to toggle CS at every word, you need to set frame size to 1 (FLEN =0).

Regards,

Peter Chung

Processors forum