ASYNC STARTTRANSMIT: Difference between revisions
No edit summary |
mNo edit summary |
||
| (One intermediate revision by the same user not shown) | |||
| Line 1: | Line 1: | ||
This function behaves as if an XON was received (starts transmitting). | This function behaves as if an XON was received (starts transmitting). | ||
; Category: IOCTL_ASYNC (01h) | |||
; Category: IOCTL_ASYNC (01h) | |||
; Function: ASYNC_STARTTRANSMIT (48h) | ; Function: ASYNC_STARTTRANSMIT (48h) | ||
==Parameter Packet Format== | ==Parameter Packet Format== | ||
None. Packet pointer must be NULL. | None. Packet pointer must be NULL. | ||
==Data Packet Format== | ==Data Packet Format== | ||
None. Packet pointer must be NULL. | None. Packet pointer must be NULL. | ||
==Returns== | ==Returns== | ||
If the call is made with invalid Parameter Packet or Data Packet pointers, a general failure error is reported, and this request is not performed by the physical device driver. | If the call is made with invalid Parameter Packet or Data Packet pointers, a general failure error is reported, and this request is not performed by the physical device driver. | ||
==Remarks== | ==Remarks== | ||
If a general failure error is not returned by the physical device driver, this function allows data transmission to be resumed by the device driver if the data transmission was stopped because of a ASYNC_STOPTRANSMIT request, or because an XOFF character was received while the physical device driver was in Automatic Transmit Flow Control mode. | If a general failure error is not returned by the physical device driver, this function allows data transmission to be resumed by the device driver if the data transmission was stopped because of a ASYNC_STOPTRANSMIT request, or because an XOFF character was received while the physical device driver was in Automatic Transmit Flow Control mode. | ||
See ASYNC_GETCOMMSTATUS for other reasons why transmission might be disabled. | See [[ASYNC_GETCOMMSTATUS]] for other reasons why transmission might be disabled. | ||
[[Category:IOCtl | [[Category:IOCtl Function]] | ||
{{DISPLAYTITLE:ASYNC_STARTTRANSMIT | {{DISPLAYTITLE:ASYNC_STARTTRANSMIT}} | ||
Latest revision as of 19:06, 22 October 2021
This function behaves as if an XON was received (starts transmitting).
- Category
- IOCTL_ASYNC (01h)
- Function
- ASYNC_STARTTRANSMIT (48h)
Parameter Packet Format
None. Packet pointer must be NULL.
Data Packet Format
None. Packet pointer must be NULL.
Returns
If the call is made with invalid Parameter Packet or Data Packet pointers, a general failure error is reported, and this request is not performed by the physical device driver.
Remarks
If a general failure error is not returned by the physical device driver, this function allows data transmission to be resumed by the device driver if the data transmission was stopped because of a ASYNC_STOPTRANSMIT request, or because an XOFF character was received while the physical device driver was in Automatic Transmit Flow Control mode.
See ASYNC_GETCOMMSTATUS for other reasons why transmission might be disabled.