From ace087123b7d8b6913e24abeff12ea0a80b893ce Mon Sep 17 00:00:00 2001
From: Matthias Ringwald <matthias@ringwald.ch>
Date: Mon, 7 Mar 2022 20:12:32 +0100
Subject: [PATCH] hci: add hci_send_iso_packet_buffer

---
 src/hci.c | 14 ++++++++++++++
 src/hci.h |  5 +++++
 2 files changed, 19 insertions(+)

diff --git a/src/hci.c b/src/hci.c
index fb89f4138..adbd93130 100644
--- a/src/hci.c
+++ b/src/hci.c
@@ -973,6 +973,20 @@ uint8_t hci_send_sco_packet_buffer(int size){
 }
 #endif
 
+#ifdef ENABLE_BLE
+uint8_t hci_send_iso_packet_buffer(uint16_t size){
+    btstack_assert(hci_stack->hci_packet_buffer_reserved);
+
+    uint8_t * packet = hci_stack->hci_packet_buffer;
+    // TODO: check for space on controller
+    // TODO: track outgoing packet sent
+    hci_dump_packet( HCI_ISO_DATA_PACKET, 0, packet, size);
+
+    int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size);
+    return (err == 0) ? ERROR_CODE_SUCCESS : ERROR_CODE_HARDWARE_FAILURE;
+}
+#endif
+
 static void acl_handler(uint8_t *packet, uint16_t size){
 
     // get info
diff --git a/src/hci.h b/src/hci.h
index 90b6324be..caac54c82 100644
--- a/src/hci.h
+++ b/src/hci.h
@@ -1308,6 +1308,11 @@ bool hci_can_send_prepared_sco_packet_now(void);
  */
 uint8_t hci_send_sco_packet_buffer(int size);
 
+/**
+ * @brief Send ISO packet prepared in HCI packet buffer
+ */
+uint8_t hci_send_iso_packet_buffer(uint16_t size);
+
 /**
  * Reserves outgoing packet buffer.
  * @return true on success