From 1cdbbe8a79e4592db5d439f2b4ec8bce936287d2 Mon Sep 17 00:00:00 2001
From: Andrzej Kaczmarek <andrzej.kaczmarek@codecoup.pl>
Date: Mon, 23 Sep 2024 17:35:09 +0200
Subject: [PATCH] nimble/ll: Fix RTN handling in HCI BIG Create

RTN is number of retransmissions onlt so IRC=RTN+1.
---
 nimble/controller/src/ble_ll_iso_big.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/nimble/controller/src/ble_ll_iso_big.c b/nimble/controller/src/ble_ll_iso_big.c
index d4a492b29..b07e5c1d8 100644
--- a/nimble/controller/src/ble_ll_iso_big.c
+++ b/nimble/controller/src/ble_ll_iso_big.c
@@ -1302,9 +1302,9 @@ ble_ll_iso_big_hci_create(const uint8_t *cmdbuf, uint8_t len)
     /* FIXME for now we only care about retransmissions, so set both NSE and IRC
      * to RTN
      */
-    bp.nse = MIN(cmd->rtn, 0x0f);;
+    bp.nse = MIN(cmd->rtn + 1, 0x0f);;
     bp.bn = 1;
-    bp.irc = MIN(cmd->rtn, 0x0f);
+    bp.irc = MIN(cmd->rtn + 1, 0x0f);
     bp.pto = 0;
     bp.iso_interval = bp.sdu_interval / 1250;
     bp.max_pdu = bp.max_sdu;