micro-ROS publisher always printing "dat:0" on ROS2 echo instead of the updated values

MAIN.C 6.txt

I am working on a micro-ROS example on a TRAVEO™ T2G MCU using a custom UART transport. The code is based on the "data

MAIN.C 6.txt

" style micro-ROS publisher/subscriber example, but I have modified it slightly.

Here is the situation:

1. I have a publisher that is supposed to send an integer value (std_msgs/msg/Int32) periodically using a ROS timer.

2. I am running ros2 topic echo /traveo_publisher on the host PC to see the published messages this will give value never changes to from 0 . it is publishing periodically but within same incorrect value.

3. I am successfully connecting to the ROS 2 agent (no connection error), and I do see messages being published.

4. However, the message always shows data: 0 instead of the value I expect (for example 123 or incrementing numbers).

5. The value does not update continuously as I move around in my code or directory — it just stays the same in ROS 2 echo output.

從附加的 MAIN.C 6.txt 檔案和 micro-ROS 資料發布者／訂閱者範例開始，然後針對 TRAVEO T2G custom UART transport 執行 ros2 topic echo /traveo_publisher。追蹤 std_msgs/msg/Int32 值在哪裡被指派和發布；當 echo 輸出反映預期值或遞增值，而不是始終顯示 data: 0 時，即表示完成。