DCMD_SDIO_DEV_START
QNX SDP8.0Devctl and Ioctl CommandsDeveloper
Start a device handler
Synopsis:
#include <mmc/sdio.h>
#define DCMD_SDIO_DEV_START __DIOT (_DCMD_MISC, 0x16, int)
Arguments to devctl():
Argument | Value |
---|---|
filedes | A file descriptor that you obtained by opening the device |
dcmd | DCMD_SDIO_DEV_START |
dev_data_ptr | A pointer to an int |
n_bytes | sizeof(int) |
dev_info_ptr | NULL |
Description:
This command starts a device handler.
Input:
The I/O function whose device handler you want to start.
Output:
None.
See also:
devctl() in the QNX OS C Library Reference
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