Intermec CN2B Bedienungsanleitung PDF herunterladen (Seite 176)

Chapter 7 — Programming

158 CN2B Mobile Computer User’s Manual

Sample

typedef struct {

DWORD ResetReason; // most recent reset type

DWORD ObjectStoreState; // state of object store

} HAL_RESET_INFO, * PHAL_RESET_INFO;

// Reset reason types

#define HAL_RESET_TYPE_UNKNOWN 0

#define HAL_RESET_REASON_HARDWARE 1 // cold

#define HAL_RESET_REASON_SOFTWARE 2 // suspend

#define HAL_RESET_REASON_WATCHDOG 4

#define HAL_RESET_BATT_FAULT 8 // power fail

#define HAL_RESET_VDD_FAULT 16 // warm boot

// Object store state flags

#define HAL_OBJECT_STORE_STATE_UNKNOWN 0

#define HAL_OBJECT_STORE_STATE_CLEAR 1

IOCTL_HAL_GET_BOOT_DEVICE

This IOCTL code allows software to check which device CE booted from.

Usage

#include “oemioctl.h”

Syntax

BOOL KernelIoControl( IOCTL_HAL_GET_BOOT_DEVICE,LPVOID

lpInBuf,DWORD nInBufSize,LPVOID lpOutBuf,DWORD

nOutBufSize,LPDWORD lpBytesReturned );

Parameters

lpInBuf Should be set to NULL.

lpInBufSize Should be set to zero.

lpOutBuf Must point to a buffer large enough to hold a DWORD (4 bytes)

that contains the boot device. These boot devices are supported:

#define HAL_BOOT_DEVICE_UNKNOWN 0

#define HAL_BOOT_DEVICE_ROM_XIP 1

#define HAL_BOOT_DEVICE_ROM 2

#define HAL_BOOT_DEVICE_PCMCIA_ATA 3

#define HAL_BOOT_DEVICE_PCMCIA_LINEAR 4

#define HAL_BOOT_DEVICE_IDE_ATA 5

#define HAL_BOOT_DEVICE_IDE_ATAPI 6

nOutBufSize The size of lpOutBuf in bytes (4).

lpBytesReturned The number of bytes returned by the function.

Return Values

Returns TRUE if function succeeds. Returns FALSE if the function fails.

May use GetLastError() to get the extended error value.

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