From c37c41bca9a5dbeeac0cda074e45902c7596df2e Mon Sep 17 00:00:00 2001
From: Gerson Fernando Budke <gerson.budke@ossystems.com.br>
Date: Sat, 14 Nov 2020 16:17:37 -0300
Subject: [PATCH] samples: mgmt: updatehub: Add modem support

Add MODEM and Arduino header overlays.  This allows users to evaluate
UpdateHub using any MODEM supported by Zephyr which supports UDP and
PPP connection.

Signed-off-by: Gerson Fernando Budke <gerson.budke@ossystems.com.br>
---
 samples/subsys/mgmt/updatehub/arduino.overlay | 12 ++++++++
 .../subsys/mgmt/updatehub/overlay-modem.conf  | 28 +++++++++++++++++++
 samples/subsys/mgmt/updatehub/src/main.c      |  6 ++++
 3 files changed, 46 insertions(+)
 create mode 100644 samples/subsys/mgmt/updatehub/arduino.overlay
 create mode 100644 samples/subsys/mgmt/updatehub/overlay-modem.conf

diff --git a/samples/subsys/mgmt/updatehub/arduino.overlay b/samples/subsys/mgmt/updatehub/arduino.overlay
new file mode 100644
index 00000000000..65a62ceb872
--- /dev/null
+++ b/samples/subsys/mgmt/updatehub/arduino.overlay
@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) 2020 O.S.Systems
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&arduino_serial {
+	status = "okay";
+	label = "arduino_serial";
+
+	current-speed = <115200>;
+};
diff --git a/samples/subsys/mgmt/updatehub/overlay-modem.conf b/samples/subsys/mgmt/updatehub/overlay-modem.conf
new file mode 100644
index 00000000000..721afd08afa
--- /dev/null
+++ b/samples/subsys/mgmt/updatehub/overlay-modem.conf
@@ -0,0 +1,28 @@
+# Copyright (c) 2020 O.S.Systems
+# SPDX-License-Identifier: Apache-2.0
+
+# Disable default configs
+CONFIG_NET_L2_ETHERNET=n
+
+CONFIG_NET_DHCPV4=n
+
+CONFIG_NET_CONFIG_SETTINGS=n
+
+# UART support
+CONFIG_SERIAL=y
+
+# GSM modem support
+CONFIG_MODEM=y
+CONFIG_MODEM_SHELL=y
+CONFIG_MODEM_GSM_PPP=y
+CONFIG_MODEM_GSM_UART_NAME="arduino_serial"
+CONFIG_MODEM_GSM_APN="<Your Access Point Network>"
+
+# PPP networking support
+CONFIG_NET_NATIVE=y
+CONFIG_NET_PPP=y
+CONFIG_NET_L2_PPP=y
+CONFIG_NET_L2_PPP_TIMEOUT=10000
+
+CONFIG_DNS_SERVER_IP_ADDRESSES=y
+CONFIG_DNS_SERVER1="8.8.8.8"
diff --git a/samples/subsys/mgmt/updatehub/src/main.c b/samples/subsys/mgmt/updatehub/src/main.c
index 01b3051ccd8..a2d82323aec 100644
--- a/samples/subsys/mgmt/updatehub/src/main.c
+++ b/samples/subsys/mgmt/updatehub/src/main.c
@@ -129,6 +129,12 @@ void main(void)
 		LOG_ERR("Error connecting to WiFi");
 		return;
 	}
+#elif defined(CONFIG_MODEM_GSM_PPP)
+	const struct device *uart_dev =
+		device_get_binding(CONFIG_MODEM_GSM_UART_NAME);
+
+	LOG_INF("APN '%s' UART '%s' device %p", CONFIG_MODEM_GSM_APN,
+		CONFIG_MODEM_GSM_UART_NAME, uart_dev);
 #endif
 
 	net_mgmt_init_event_callback(&mgmt_cb, event_handler, EVENT_MASK);