Hdk7515_Getpowermode - Psion EP10 User Manual

Returns
• ERROR_SUCCESS – if successful.
• ERROR_INVALID_HANDLE – the specified handle is invalid.
• ERROR_INVALID_PARAMETER – one of the parameters is incorrect or invalid.
• ERROR_INVALID_DATA - an exception was generated.
• Other errors are possible.
Sample Code
DWORD SetPowerMode(Hdk7515_PowerMode powerMode)
{
HANDLE hdkHandle = INVALID_HANDLE_VALUE;
DWORD result = Hdk7515_Open(&hdkHandle, Hdk7515_Connector_Docking);
if( result != ERROR_SUCCESS ) {
return ERROR_NOT_SUPPORTED;
}
Hdk7515_PowerMode mode = Hdk7515_PowerMode_Manual;
result = Hdk7515_GetPowerMode(hdkHandle, &mode);
if( result != ERROR_SUCCESS ) {
Hdk7515_Close(hdkHandle);
hdkHandle = INVALID_HANDLE_VALUE;
return result;
}
if( mode != powerMode ) {
result = Hdk7515_SetPowerMode(hdkHandle, powerMode);
}
Hdk7515_Close(hdkHandle);
hdkHandle = INVALID_HANDLE_VALUE;
return result;
}
3.7.3.6

Hdk7515_GetPowerMode

Syntax
DWORD Hdk7515_GetPowerMode( HANDLE hdk, Hdk7515_PowerMode *mode );
Parameters
• hdk – [in] an open HDK handle.
• mode – [out] pointer to a Hdk7515_PowerMode value that will contain the current power mode of
the connector.
Description
This function is used to retrieve the current power mode of the peripheral attached to the connector. There
are currently two modes available: Auto and Manual.
The default power mode is Manual.
Chapter 3: Software
EP10 HDK API Functions
Psion EP10 HDK User Manual
25