Optimizing Power of sd card problem

RE: Optimizing Power of sd card problem

zhangsenlin@micrstone.com — Sat, 27 Aug 2022 08:22:09 GMT

Thanks ,It is work

RE: Optimizing Power of sd card problem

zhangsenlin@micrstone.com — Fri, 26 Aug 2022 10:46:48 GMT

OK, I will try this using PM moudule,Thanks

RE: Optimizing Power of sd card problem

Einarh — Fri, 26 Aug 2022 08:53:56 GMT

I don't think this will be a problem as long as you make sure spi is initialized when you init fs again

RE: Optimizing Power of sd card problem

zhangsenlin@micrstone.com — Wed, 24 Aug 2022 14:01:32 GMT

What I mean is, because of I am using the fs module of zephyr, and the fs module calls the disk_access module of zephyr, and disk_access calls the nrfx_spi driver, if I use the nrfx_spi underlying driver directly, will it affect the program logic of disk_access? I think it is dangerous to directly call the spi underlying driver.

RE: Optimizing Power of sd card problem

Einarh — Wed, 24 Aug 2022 13:50:44 GMT

It is still not clear to me exactly what your issue is.

After you unmount and uninit spim4 you are unable to init it again?

What is not working like you expect it to?

RE: Optimizing Power of sd card problem

zhangsenlin@micrstone.com — Wed, 24 Aug 2022 13:36:54 GMT

After I call fs_unmount(&mnt_pt), if I call spi4_unint directly, I can close spim4.

But when I call fs_unmount(&mnt_pt) again, an error should be reported. Because the initial configuration of spim is performed at system startup.

RE: Optimizing Power of sd card problem

Einarh — Wed, 24 Aug 2022 10:30:40 GMT

[quote user="zhangsenlin@micrstone.com"]If I use directly spi dirver.I suppose that the sdmmc will not mount successfull again,beause the sdmmc finnally use spim4 dirver.[/quote]

I'm not sure what you mean by this, could you please explain?

RE: Optimizing Power of sd card problem

zhangsenlin@micrstone.com — Wed, 24 Aug 2022 08:54:36 GMT

Yes, I am using nrfx SPIM driver. And you will see two figures below.

I have used subsystem moudule "disk", the zephyr dirver "disk" and the spi driver "spi_nrfx_spim".

I disable the spim4 by to configure the spim4 register using vscode debug console.As shown below.

If I use directly spi dirver.I suppose that the sdmmc will not mount successfull again,beause the sdmmc finnally use spim4 dirver.

RE: Optimizing Power of sd card problem

Einarh — Mon, 22 Aug 2022 12:04:02 GMT

Hello

Are you using the Zephyr SPI driver or the nrfx SPIM driver?

With the nrfx driver I believe you could use nrfx_spim_uninit()?

You say you disabled SPIM4 and the problem was solved, what method did you use to disable SPIM4 in this case?

Best regards,

Einar