(mynewt-nimble) 03/03: nimble/ll: Update chanmap in BIGInfo after completed chanmap update

[an...@apache.org]

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andk pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/mynewt-nimble.git

commit 890be280a318b6e447acaa929ff22a2c713044e4
Author: Andrzej Kaczmarek <an...@codecoup.pl>
AuthorDate: Thu Feb 20 14:00:28 2025 +0100

    nimble/ll: Update chanmap in BIGInfo after completed chanmap update
    
    Channel map needs to be update in BIGInfo after change since BIGInfo is
    precalculated and not generated before each tx.
---
 nimble/controller/src/ble_ll_iso_big.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/nimble/controller/src/ble_ll_iso_big.c b/nimble/controller/src/ble_ll_iso_big.c
index de895b1ea..1b4e50d36 100644
--- a/nimble/controller/src/ble_ll_iso_big.c
+++ b/nimble/controller/src/ble_ll_iso_big.c
@@ -255,6 +255,18 @@ ble_ll_iso_big_last_tx_timestamp_get(struct ble_ll_iso_bis *bis,
     return 0;
 }
 
+static void
+ble_ll_iso_big_biginfo_chanmap_update(struct ble_ll_iso_big *big)
+{
+    uint8_t *buf;
+
+    buf = &big->biginfo[23];
+
+    /* chm, phy */
+    memcpy(buf, big->chan_map, 5);
+    buf[4] |= (big->phy - 1) << 5;
+}
+
 static void
 ble_ll_iso_big_biginfo_calc(struct ble_ll_iso_big *big, uint32_t seed_aa)
 {
@@ -296,8 +308,7 @@ ble_ll_iso_big_biginfo_calc(struct ble_ll_iso_big *big, uint32_t seed_aa)
 
     /* chm, phy */
     memcpy(buf, big->chan_map, 5);
-    buf[4] |= (big->phy - 1) << 5;
-    buf += 5;
+    ble_ll_iso_big_biginfo_chanmap_update(big);
 
     /* bis_payload_cnt, framing */
     memset(buf, 0x00, 5);
@@ -437,6 +448,8 @@ ble_ll_iso_big_chan_map_update_complete(struct ble_ll_iso_big *big)
 {
     memcpy(big->chan_map, big->chan_map_new, BLE_LL_CHAN_MAP_LEN);
     big->chan_map_used = ble_ll_utils_chan_map_used_get(big->chan_map);
+
+    ble_ll_iso_big_biginfo_chanmap_update(big);
 }
 
 static void