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hmiBackup

Description

Requests the board to switch to the backup signaling state.

Prototype

DWORD hmiBackup (CTAHD ctahd)
ctahd CT Access handle from a previous successful call to ctaOpenServices.

Return Values

SUCCESS
HMI_ERR_CLOSEDRequest failed - connection closed by HMI.
HMI_ERR_BADCMDRequest failed - an event handle was passed to the HM API command.
HMI_ERR_TIMEOUTRequest failed - no response from HMI service.
HMI_ERR_INVHANDLEThe handle is not valid.
HMI_ERR_NOMEMNo memory available.
HMI_ERR_REFUSEDHMI refused the request, halted or standalone state.
HMI_ERR_INTERRORRequest failed - unknown I/O error occurred.

Details

This request can only be issued to a board in the primary or starting state.

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