Azure IoT
A category of Azure services for internet of things devices.
378 questions
The event flags notification callback function is called in whichever thread/ISR calls tx_event_flags_set.
What thread does the call back for tx_event_flags_set_notify run in
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Michael Fowler
131
Reputation points
When an event flag is set in a group that has an associated call back function set by tx_event_flags_set_notify, what thread runs the call back?
{count} votes
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QuantumCache 20,031 Reputation points2022-12-06T03:20:01.867+00:00 Hello @Michael Fowler Just checking in if you have had a chance to see the previous response.
If the response is helpful, please click "Accept Answer" and upvote it. So that we can close this thread.
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Accepted answer
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(25.6, 6%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESA%3C/text%3E%3C/svg%3E)
Scott Azure RTOS 4,051 Reputation points2022-12-06T16:54:30.223+00:00 -
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Ivan 5 Reputation points2023-01-31T07:13:17.9033333+00:00 Hi Scott, if notification callback function is called in whichever thread/ISR calls tx_event_flags_set, why don't we program a function directly in thread/ISR instead using tx_event_flags_set_notify!?
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Ivan 5 Reputation points
2023-01-31T07:13:56.4166667+00:00 123456
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Scott Azure RTOS 4,051 Reputation points
2023-01-31T19:05:30.6733333+00:00 Hi Ivan, multiple threads & ISRs can set event flags. Rather than have all of them call some function directly in addition to setting the event flags, the notification feature allows you to tie that function to the event flags group. See here for more info about notification functions: https://learn.microsoft.com/en-us/training/modules/threadx-event-chain-suspend-objects/3-functions
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