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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