imx6ull ecspi cannot work in constant gap between each spi_async()

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imx6ull ecspi cannot work in constant gap between each spi_async()

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bighero77
Contributor III

my board: imx6ull , linux4.1x

in my code. I would call spi_async() to start transfer a data package. 

I need call this function in constant period.

but. I check the CS signal and find the gap tween each cs drops looks not reasonable:

I think this cause the issue: spi cannot stop absolutely.

would you tell me . can we set the minium gap tween spi transfer?

thank.

    gaop.png

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pengyong_zhang
NXP Employee
NXP Employee

Hi @bighero77 

Only when you transfer the data, the CS line will in the low voltage, Please share your Waveform And mark each signal。

B.R

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bighero77
Contributor III

thanks,pengyou。

maybe my data is not constant.

 

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