From c7f6ac63b01eee2a1beed57d4a8b519eb6fc2401 Mon Sep 17 00:00:00 2001
From: raiden00pl <raiden00@railab.me>
Date: Fri, 17 Dec 2021 15:18:07 +0100
Subject: [PATCH] arch/arm/src/nrf52/nrf52_sdc.c: add option to register UART
 H4 device

---
 arch/arm/src/nrf52/Kconfig     |  5 +++++
 arch/arm/src/nrf52/nrf52_sdc.c | 20 ++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/arch/arm/src/nrf52/Kconfig b/arch/arm/src/nrf52/Kconfig
index a3a6a127d9e..feb16a8dc1c 100644
--- a/arch/arm/src/nrf52/Kconfig
+++ b/arch/arm/src/nrf52/Kconfig
@@ -725,5 +725,10 @@ config NRF52_SDC_VERSION
 		to use. See official Nordic documentation on which chips are supported
 		in each version.
 
+config NRF52_BLE_TTY_NAME
+	string "BLE TTY device name"
+	default "/dev/ttyHCI0"
+	depends on UART_BTH4
+
 endif
 
diff --git a/arch/arm/src/nrf52/nrf52_sdc.c b/arch/arm/src/nrf52/nrf52_sdc.c
index 05fd8b2304d..310daea565b 100644
--- a/arch/arm/src/nrf52/nrf52_sdc.c
+++ b/arch/arm/src/nrf52/nrf52_sdc.c
@@ -36,6 +36,10 @@
 #include <arch/nrf52/nrf52_irq.h>
 #include <nuttx/wqueue.h>
 
+#if defined(CONFIG_UART_BTH4)
+#  include <nuttx/serial/uart_bth4.h>
+#endif
+
 #include "arm_internal.h"
 #include "ram_vectors.h"
 #include "arm_arch.h"
@@ -557,9 +561,25 @@ int nrf52_sdc_initialize(void)
       return ret;
     }
 
+#ifdef CONFIG_UART_BTH4
+  /* Register UART BT H4 device */
+
+  ret = uart_bth4_register(CONFIG_NRF52_BLE_TTY_NAME, &g_bt_driver);
+  if (ret < 0)
+    {
+      wlerr("bt_bth4_register error: %d\n", ret);
+      return ret;
+    }
+#else
   /* Register network device */
 
   ret = bt_netdev_register(&g_bt_driver);
+  if (ret < 0)
+    {
+      wlerr("bt_netdev_register error: %d\n", ret);
+      return ret;
+    }
+#endif
 
   return ret;
 }