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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_SDMMC_*
DCMD_SDMMC_ERASE
Erase the device

QNX Momentics IDE User's Guide
This User's Guide describes version 8.0 of the Integrated Development Environment (IDE) that's part of the QNX Tool Suite.
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_SDMMC_ASSD_APDU
        Transfer an APDU packet to the device
      - DCMD_SDMMC_ASSD_CONTROL
        Control an Advanced Security SD card operation
      - DCMD_SDMMC_ASSD_PROPERTIES
        Get Advanced Security SD card properties
      - DCMD_SDMMC_ASSD_STATUS
        Get the status of an Advanced Security SD card operation
      - DCMD_SDMMC_CARD_REGISTER
        Read or write a card register
      - DCMD_SDMMC_DEVICE_HEALTH
        Get information about the device's health
      - DCMD_SDMMC_DEVICE_INFO
        Get information about the device
      - DCMD_SDMMC_ERASE
        Erase the device
      - DCMD_SDMMC_GEN_CMD
        Send a general command to the device
      - DCMD_SDMMC_LOCK_UNLOCK
        Lock or unlock the device
      - DCMD_SDMMC_MAN_CMD
        Send a manufacturer command to the device
      - DCMD_SDMMC_PART_INFO
        Get or clear information about a partition
      - DCMD_SDMMC_PWR_MGNT
        Control power management for the device
      - DCMD_SDMMC_WRITE_PROTECT
        Clear or set write protection
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Typographical Conventions, Support, and Licensing
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DCMD_SDMMC_ERASE

QNX SDP8.0Devctl and Ioctl CommandsDeveloper

Erase the device

Synopsis:

#include <hw/dcmd_sim_sdmmc.h>

#define DCMD_SDMMC_ERASE   __DIOTF(_DCMD_CAM, _SIM_SDMMC + 2, struct _sdmmc_erase)

Arguments to devctl():


Argument	Value
`filedes`	A file descriptor that you obtained by opening the device
`dcmd`	DCMD_SDMMC_ERASE
`dev_data_ptr`	A pointer to a SDMMC_ERASE structure (see below)
`n_bytes`	`sizeof(SDMMC_ERASE)`
`dev_info_ptr`	NULL

Description:

This command erases the device.

typedef struct _sdmmc_erase {
        uint32_t                action;
        uint32_t                rsvd;
        uint64_t                lba;
        uint64_t                nlba;
        uint64_t                rsvd2;
} SDMMC_ERASE;

The members include:

action

The action to take; one of:

SDMMC_ERASE_ACTION_NORMAL
SDMMC_ERASE_ACTION_SECURE
SDMMC_ERASE_ACTION_TRIM
SDMMC_ERASE_ACTION_SECURE_TRIM
SDMMC_ERASE_ACTION_SECURE_PURGE
SDMMC_ERASE_ACTION_DISCARD
SDMMC_ERASE_ACTION_SANITIZE

lba

The logical block address.

nlba

The number of logical blocks.

Input:

Fill in the action and the lba and nlba members.

Output:

None.

See also:

devctl() in the QNX OS C Library Reference

Page updated: March 05, 2025