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QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
Utilities & Libraries
Devctl and Ioctl Commands
DCMD_SDIO_*
DCMD_SDIO_SET_IOREG
Set some bits in an I/O register

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QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
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      - DCMD_SDIO_ATTACH_DEVICE
        Attach a device
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        Configure I/O memory
      - DCMD_SDIO_CLR_IOREG
        Clear some bits in an I/O register
      - DCMD_SDIO_DETACH_DEVICE
        Detach a device
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        Start a device handler
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        Stop a device handler
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        Get the host controller capabilities
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        Disable a function interrupt
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        Enable a function interrupt
      - DCMD_SDIO_READ_IOREG
        Read an I/O register
      - DCMD_SDIO_SET_IOREG
        Set some bits in an I/O register
      - DCMD_SDIO_SHMEM_FINI
        Unmap the device's shared memory object
      - DCMD_SDIO_SHMEM_INIT
        Initialize the device's shared memory object
      - DCMD_SDIO_VENDOR
        Execute a vendor-specific command
      - DCMD_SDIO_WRITE_IOREG
        Write to an I/O register
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    The QNX Cryptography Library (qcrypto) is a flexible cryptography framework that allows you to choose which cryptography provider responds to requests on a per-process basis.
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    This document provides a reference for the Wi-Fi Protected Access (WPA) control interface, which provides a C API for the WPA/IEEE 802.11i protocols in Wi-Fi client stations. Application developers who want to control WPA operations and get associated status and event data should read this reference.
- Migrating to QNX OS 8.0
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Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation, explains how to obtain technical support, and provides some information about licensing.

DCMD_SDIO_SET_IOREG

QNX SDP8.0Devctl and Ioctl CommandsDeveloper

Set some bits in an I/O register

Synopsis:

#include <mmc/sdio.h>

#define DCMD_SDIO_SET_IOREG             __DIOT (_DCMD_MISC, 0x03, sdio_ioreg_t)

Arguments to devctl():


Argument	Value
`filedes`	A file descriptor that you obtained by opening the device
`dcmd`	DCMD_SDIO_SET_IOREG
`dev_data_ptr`	A pointer to a sdio_ioreg_t
`n_bytes`	`sizeof(sdio_ioreg_t)`
`dev_info_ptr`	NULL

Description:

This command sets an I/O register. The sdio_ioreg_t structure is defined as follows:

typedef struct _sdio_ioreg_t {
        uint8_t         func;
        uint8_t         val;
        uint8_t         rsvd[2];
        uint32_t        reg;
} sdio_ioreg_t;

The members include:

func: The function number
val: The bits that you want to set in the register.
reg: The register to set.

Input:

Initialize all members of the structure.

Output:

None.