ASYNC SETBREAKOFF: Difference between revisions
Created page with "This function sets the break off. ; Category:IOCTL_ASYNC (01h) ; Function:ASYNC_SETBREAKOFF (45h) ==Parameter Packet Format== None. Packet pointer must be NULL. ==Data Pa..." |
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Revision as of 23:42, 26 March 2020
This function sets the break off.
- Category
- IOCTL_ASYNC (01h)
- Function
- ASYNC_SETBREAKOFF (45h)
Parameter Packet Format
None. Packet pointer must be NULL.
Data Packet Format
┌───────────────────────────────────────────────────┐ │Field Length C Datatype │ ├───────────────────────────────────────────────────┤ │COM Error WORD (COMERR) WORD USHORT │ └───────────────────────────────────────────────────┘
Returns
If the call is made with an invalid Parameter Packet pointer and a general failure error is reported, this function is not performed and valid information is not returned in the Data Packet.
Remarks
If a general failure is not returned, then the physical device driver stops generating a break signal. It is not considered an error if the physical device driver is not generating a break signal. The physical device driver then resumes transmitting characters, taking into account all the other reasons why characters might be transmitted.