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samples: Bluetooth: iso_broadcast: Sent callback to sync ISO Data send

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Use the ISO Data sent callback in iso_broadcast sample to
synchronize the ISO data send. ISO Data sent callback is
generated every SDU interval corresponding to the number of
completed packets event generated by the Controller.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
This commit is contained in:
Vinayak Kariappa Chettimada 2023-06-08 07:39:02 +05:30 • committed by Carles Cufí
commit 121c505153
1 changed files with 18 additions and 4 deletions
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22
samples/bluetooth/iso_broadcast/src/main.c
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@ -19,6 +19,8 @@ NET_BUF_POOL_FIXED_DEFINE(bis_tx_pool, BIS_ISO_CHAN_COUNT,
static K_SEM_DEFINE(sem_big_cmplt, 0, BIS_ISO_CHAN_COUNT);
static K_SEM_DEFINE(sem_big_term, 0, BIS_ISO_CHAN_COUNT);
static K_SEM_DEFINE(sem_iso_data, CONFIG_BT_ISO_TX_BUF_COUNT,
CONFIG_BT_ISO_TX_BUF_COUNT);
#define INITIAL_TIMEOUT_COUNTER (BIG_TERMINATE_TIMEOUT_US / BIG_SDU_INTERVAL_US)
@ -40,9 +42,15 @@ static void iso_disconnected(struct bt_iso_chan *chan, uint8_t reason)
k_sem_give(&sem_big_term);
}
static void iso_sent(struct bt_iso_chan *chan)
{
k_sem_give(&sem_iso_data);
}
static struct bt_iso_chan_ops iso_ops = {
.connected = iso_connected,
.disconnected = iso_disconnected,
.sent = iso_sent,
};
static struct bt_iso_chan_io_qos iso_tx_qos = {
@ -140,12 +148,9 @@ int main(void)
}
while (true) {
int ret;
k_sleep(K_USEC(big_create_param.interval));
for (uint8_t chan = 0U; chan < BIS_ISO_CHAN_COUNT; chan++) {
struct net_buf *buf;
int ret;
buf = net_buf_alloc(&bis_tx_pool,
K_MSEC(BUF_ALLOC_TIMEOUT));
@ -154,6 +159,15 @@ int main(void)
" %u\n", chan);
return 0;
}
ret = k_sem_take(&sem_iso_data,
K_MSEC(BUF_ALLOC_TIMEOUT));
if (ret) {
printk("k_sem_take for ISO data sent failed\n");
net_buf_unref(buf);
return 0;
}
net_buf_reserve(buf, BT_ISO_CHAN_SEND_RESERVE);
sys_put_le32(iso_send_count, iso_data);
net_buf_add_mem(buf, iso_data, sizeof(iso_data));