* [ECOS] reading size and used space on compact flash (CF) card?
@ 2012-06-29 13:16 Ken Yee
2012-06-29 22:42 ` Frank Pagliughi
0 siblings, 1 reply; 2+ messages in thread
From: Ken Yee @ 2012-06-29 13:16 UTC (permalink / raw)
To: ecos-discuss
I haven't been able to dig anything up on this using the search engine or Google.
Has anyone been able to read the size and free space left on a CF card (which uses the IDE driver)?
Closest thing I found was this code that I modified slightly:
int get_size() {
cyg_disk_info_t cf_info;
char cf_model[41];
cyg_io_handle_t cf_handle;
cyg_uint32 len = sizeof(cyg_disk_info_t);
int error = cyg_io_lookup(CFDEV_, &cf_handle);
if (error!=0) {
printf("lookup error:%i\n",error);
return 0;
} 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;
memset(cf_model, 0, sizeof(cf_model));
strncpy(cf_model,cf_info.ident.model_num,sizeof(cf_model));
printf("block size:%d, phys_block_size:%d, num_blocks:%d, connected:%d, model:%s\n"
,block_size,phys_block_size,blocks_num,is_connected,cf_model);
// block_size should be 512 bytes and we want to return megabytes
block_size = 1; // hack for now because it's returning 33MB for block size from the current API :-P
return (((blocks_num/1024)*block_size)/1024);
}
}
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?
--
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [ECOS] reading size and used space on compact flash (CF) card?
2012-06-29 13:16 [ECOS] reading size and used space on compact flash (CF) card? Ken Yee
@ 2012-06-29 22:42 ` Frank Pagliughi
0 siblings, 0 replies; 2+ messages in thread
From: Frank Pagliughi @ 2012-06-29 22:42 UTC (permalink / raw)
To: Ken Yee; +Cc: ecos-discuss
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
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
^ permalink raw reply [flat|nested] 2+ messages in thread
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2012-06-29 13:16 [ECOS] reading size and used space on compact flash (CF) card? Ken Yee
2012-06-29 22:42 ` Frank Pagliughi
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