Commit f00da4b0 authored by Vinayak Kariappa Chettimada's avatar Vinayak Kariappa Chettimada Committed by Stephanos Ioannidis
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Bluetooth: Controller: Fix ISO Data sn nesn on flush 



Fix sn and nesn values of ISO data when starting a new burst.
When central retransmitted but did not get an ack, it did
not update the sn correctly causing the peripheral to drop
the next ISO data PDU.

Signed-off-by: default avatarVinayak Kariappa Chettimada <vich@nordicsemi.no>
parent 5c0a07fc

subsys/bluetooth/controller/ll_sw/nordic/lll/lll_central_iso.c

+12 −0
Original line number Diff line number Diff line
@@ -812,6 +812,18 @@ static void isr_done(void *param) 
	/* Get reference to CIS LLL context */

	cis_lll = param;



	/* Adjust sn when flushing Tx */

	/* FIXME: When Flush Timeout is implemented */

	if (bn_tx <= cis_lll->tx.bn) {

		cis_lll->sn += cis_lll->tx.bn + 1U - bn_tx;

	}



	/* Adjust nesn when flushing Rx */

	/* FIXME: When Flush Timeout is implemented */

	if (bn_rx <= cis_lll->rx.bn) {

		cis_lll->nesn += cis_lll->rx.bn + 1U - bn_rx;

	}



	/* Generate ISO Data Invalid Status */

	bn = bn_rx;

	while (bn <= cis_lll->rx.bn) {

subsys/bluetooth/controller/ll_sw/nordic/lll/lll_peripheral_iso.c

+16 −0
Original line number Diff line number Diff line
@@ -531,6 +531,16 @@ static void isr_rx(void *param) 
	/* FIXME: Consider Flush Timeout when resetting current burst number */

	if (!has_tx) {

		has_tx = 1U;



		/* Adjust sn when flushing Tx. Stop at sn != nesn, hence

		 * (bn < cis_lll->tx.bn).

		 */

		/* FIXME: When Flush Timeout is implemented */

		if (bn_tx < cis_lll->tx.bn) {

			cis_lll->sn += cis_lll->tx.bn - bn_tx;

		}



		/* Start transmitting new burst */

		bn_tx = 1U;

	}
@@ -972,6 +982,12 @@ static void isr_done(void *param) 
	/* Get reference to CIS LLL context */

	cis_lll = param;



	/* Adjust nesn when flushing Rx */

	/* FIXME: When Flush Timeout is implemented */

	if (bn_rx <= cis_lll->rx.bn) {

		cis_lll->nesn += cis_lll->rx.bn + 1U - bn_rx;

	}



	/* Generate ISO Data Invalid Status */

	bn = bn_rx;

	while (bn <= cis_lll->rx.bn) {

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