[Tinyos-help] UART send timing

[Bhavish Aggarwal]

Hi,

I am doing an experiment in tinyos 1 to determine the time taken for a
packet to be sent over the UART link to the PC i.e. the time
difference between UARTSend.send() call and the signalling of sendDone
event. This time comes out to be on an average 7 ms. Since there is no
backoff like in the case of transmission over radio, this seems to be
a very high value. Is there a specific reason for this? Does the
underlying UART protocol wait for ACKs for each packet sent on it?

The UARTSend interface is wired to FramerM as in TOSBase.

Bhavish