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EasyLink_Status EasyLink_transmitCCAAsync(EasyLink_TxPacket * txPacket, EasyLink_TxDoneCb cb, EasyLink_GetRandomNumber grn)
Sends a Packet with non blocking call if the channel is idle.
This function is a non blocking call to send a packet. It will check for a clear channel prior to transmission. If the channel is busy it will backoff for a random period, in time units of EASYLINK_CCA_BACKOFF_TIMEUNITS, before reassessing. It does this a certain number (EASYLINK_MAX_CCA_BACKOFF_WINDOW - EASYLINK_MIN_CCA_BACKOFF_WINDOW) of times before quitting unsuccessfully and running to the callback. If the Tx is successfully scheduled then the callback will be called once the Tx is complete.
