From: Frank Pagliughi <fpagliughi@mindspring.com>
To: Ken Yee <kenkyee@excite.com>
Cc: ecos-discuss@ecos.sourceware.org
Subject: Re: [ECOS] reading size and used space on compact flash (CF) card?
Date: Fri, 29 Jun 2012 22:42:00 -0000 [thread overview]
Message-ID: <4FEE2F62.6010001@mindspring.com> (raw)
In-Reply-To: <20120629091545.28040@web005.roc2.bluetie.com>
On 06/29/2012 09:15 AM, Ken Yee wrote:
> ...
> } else {
> error = cyg_io_get_config(cf_handle,0,&cf_info,&len); //
> //printf("cf get_config error: %i %i\n",error,-EINVAL); // should get -EINVAL???
> uint32_t block_size = cf_info.block_size;
> uint32_t blocks_num = cf_info.blocks_num;
> uint32_t phys_block_size = cf_info.phys_block_size;
> bool is_connected = cf_info.connected;
>
> ...
> But as mentioned in the code, it's returning crazy numbers in the 33MB range no matter what size CF card I install (I've tried 32MB and 128MB :-(
> Is there any other official API to read the size of it or any other IDE devices?
>
You are not using the proper key when querying for the disk information.
You need to use CYG_IO_GET_CONFIG_DISK_INFO (not zero) as in:
error = cyg_io_get_config(cf_handle, CYG_IO_GET_CONFIG_DISK_INFO,
&cf_info, &len);
When you use the unrecognized key of zero, the function returns the
error code -EINVAL because it doesn't recognize the query. With the
proper query the function should return 0 for success.
Frank
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prev parent reply other threads:[~2012-06-29 22:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-29 13:16 Ken Yee
2012-06-29 22:42 ` Frank Pagliughi [this message]
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