OMAP-L138, SPI - Processors forum - Processors

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xiaoxia li

Intellectual 340 points

Other Parts Discussed in Thread: OMAP-L138

Hi.

I am trying to connect serial ADC to the SPI port of the OMAP-L138. But I can't get spi clock, while I set spi_config.freq = 500000 in main function. Can anyone tell me how to solve the problem ?

Also I have another question that is how to read the spi_data ? Is there an example for reference?

Thanks!

lex

over 14 years ago

0 jc-ti over 14 years ago

TI__Mastermind 27585 points

Are you using the EVM? The BSL that comes with it has examples on using the SPI peripheral.

Jeff

0 xiaoxia li over 14 years ago in reply to jc-ti

Intellectual 340 points

Hi Jeff,

Thanks for your reply firstly. I referred to evmomapl138_spi.c to init spi and to do spi_xfer, but I cann't get SPI_CLK.

How to solve the problem?

0 jc-ti over 14 years ago in reply to xiaoxia li

TI__Mastermind 27585 points

Can you check that the pinmux is set correctly in the SYSCFG registers in order to enable SPI_CLK functionality?

Jeff