serial: Add barrier to synchronize
Add a pthread barrier to synchronize the Rx/Tx threads and remove the Tx pipe as it becomes useless.
This fixes the issue when the serial test is run inside bit.
BCS 746-000147
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Add a pthread barrier to synchronize the Rx/Tx threads and remove the Tx pipe as it becomes useless.
This fixes the issue when the serial test is run inside bit.
BCS 746-000147