topic imx6ull ecspi cannot work in constant gap between each spi_async() in i.MX Processors

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

bighero77 — Tue, 03 Jun 2025 03:23:28 GMT

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

pengyong_zhang — Tue, 03 Jun 2025 07:12:50 GMT

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

B.R

bighero77 — Sun, 15 Jun 2025 04:28:10 GMT

thanks，pengyou。

maybe my data is not constant.