[riot-notifications] [RIOT-OS/RIOT] kw2xrf: CSMA support missing in driver (#10364)

Thomas Stilwell notifications at github.com
Sat Sep 14 00:37:18 CEST 2019

By the way there's a bug in the #7107 CSMA implementation that prevents any retransmissions from actually happening if the initial CCA fails.

After `_isr_event_seq_t_ccairq()` calls `kw41zrf_tx_exec()` to retransmit the last frame, `_isr_event_seq_tr()` aborts the sequencer prematurely by calling `kw41zrf_set_sequence(dev, dev->idle_seq)` while handling `ZLL_IRQSTS_SEQIRQ_MASK`.

But with that fixed I think it works as intended.

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