Add support for KW40Z in the KW41Z IEEE 802.15.4 driver as both chips
expose almost the same radio registers.
Signed-off-by: Bogdan Davidoaia <bogdan.davidoaia@linaro.org>
The chip seems to require a wait time before reading packet
data after the RX sequence done interrupt, as imidiate reading
of it will indicate a packet size of zero and cause the RX
sequence done to be continually retriggered.
In addition, the extra clearing of the interrupt flags can be
removed, as this is already done at the beginning of the isr.
Jira: ZEP-2278
Signed-off-by: Bogdan Davidoaia <bogdan.davidoaia@linaro.org>
There is no need to unmask/mask the global transceiver interrupt
in kw41z_start/stop as the radio interrupt line is enabled/disabled
anyway with irq_enable/disable calls.
Signed-off-by: Bogdan Davidoaia <bogdan.davidoaia@linaro.org>
- set state to IDLE if TMR1 expires, but CCA reports channel as free
- no need to check for CCABFRTX, as the hardware isn't setup to do
CCA before TX
Signed-off-by: Bogdan Davidoaia <bogdan.davidoaia@linaro.org>
Sequence timeouts should be scaled to 16us, as TMR_PRESCALE was set
to 62.5kHz.
Also, radio warmup times and TX packet length need to be taken into
account.
Signed-off-by: Bogdan Davidoaia <bogdan.davidoaia@linaro.org>
