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43 lines
1.6 KiB
Markdown
43 lines
1.6 KiB
Markdown
---
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pageClass: is-wide-page
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---
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# UlogStreamAck (UORB message)
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Ack a previously sent ulog_stream message that had. the NEED_ACK flag set.
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**TOPICS:** ulog_stream_ack
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## Fields
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| Name | Type | Unit [Frame] | Range/Enum | Description |
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| ------------ | -------- | ------------ | ---------- | -------------------------------------- |
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| timestamp | `uint64` | | | time since system start (microseconds) |
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| msg_sequence | `uint16` | | |
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## Constants
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| Name | Type | Value | Description |
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| ----------------------------------------- | ------- | ----- | -------------------------------------------------------------------------------- |
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| <a id="#ACK_TIMEOUT"></a> ACK_TIMEOUT | `int32` | 50 | timeout waiting for an ack until we retry to send the message [ms] |
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| <a id="#ACK_MAX_TRIES"></a> ACK_MAX_TRIES | `int32` | 50 | maximum amount of tries to (re-)send a message, each time waiting ACK_TIMEOUT ms |
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## Source Message
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[Source file (GitHub)](https://github.com/PX4/PX4-Autopilot/blob/main/msg/UlogStreamAck.msg)
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::: details Click here to see original file
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```c
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# Ack a previously sent ulog_stream message that had
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# the NEED_ACK flag set
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uint64 timestamp # time since system start (microseconds)
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int32 ACK_TIMEOUT = 50 # timeout waiting for an ack until we retry to send the message [ms]
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int32 ACK_MAX_TRIES = 50 # maximum amount of tries to (re-)send a message, each time waiting ACK_TIMEOUT ms
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uint16 msg_sequence
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```
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:::
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