From 77162b8c6f32d39fdae78f6e76fe47bb495bbed5 Mon Sep 17 00:00:00 2001
From: Jose Alamos <jose.alamos@haw-hamburg.de>
Date: Thu, 7 Mar 2019 16:35:18 +0100
Subject: [PATCH] drivers/sx127x: add NETOPT_SYNCWORD option handling

---
 drivers/sx127x/sx127x_netdev.c     | 10 ++++++++++
 sys/include/net/netopt.h           |  5 +++++
 sys/net/crosslayer/netopt/netopt.c |  1 +
 3 files changed, 16 insertions(+)

diff --git a/drivers/sx127x/sx127x_netdev.c b/drivers/sx127x/sx127x_netdev.c
index a08df8e877..9d86ad1b68 100644
--- a/drivers/sx127x/sx127x_netdev.c
+++ b/drivers/sx127x/sx127x_netdev.c
@@ -351,6 +351,11 @@ static int _get(netdev_t *netdev, netopt_t opt, void *val, size_t max_len)
             *((int16_t*) val) = (int16_t)sx127x_get_tx_power(dev);
             return sizeof(int16_t);
 
+        case NETOPT_SYNCWORD:
+            assert(max_len >= sizeof(uint8_t));
+            *((uint8_t*) val) = (uint8_t) sx127x_get_syncword(dev);
+            return sizeof(uint8_t);
+
         case NETOPT_IQ_INVERT:
             assert(max_len >= sizeof(uint8_t));
             *((netopt_enable_t*) val) = sx127x_get_iq_invert(dev) ? NETOPT_ENABLE : NETOPT_DISABLE;
@@ -480,6 +485,11 @@ static int _set(netdev_t *netdev, netopt_t opt, const void *val, size_t len)
             sx127x_set_preamble_length(dev, *((const uint16_t*) val));
             return sizeof(uint16_t);
 
+        case NETOPT_SYNCWORD:
+            assert(len <= sizeof(uint8_t));
+            sx127x_set_syncword(dev, *((uint8_t*) val));
+            return sizeof(uint8_t);
+
         case NETOPT_IQ_INVERT:
             assert(len <= sizeof(netopt_enable_t));
             sx127x_set_iq_invert(dev, *((const netopt_enable_t*) val) ? true : false);
diff --git a/sys/include/net/netopt.h b/sys/include/net/netopt.h
index d48841118e..1bac19606b 100644
--- a/sys/include/net/netopt.h
+++ b/sys/include/net/netopt.h
@@ -645,6 +645,11 @@ typedef enum {
      */
     NETOPT_LORAWAN_MIN_RX_SYMBOL,
 
+    /**
+     * @brief   (uint8_t*) phy layer syncword
+     */
+    NETOPT_SYNCWORD,
+
     /* add more options if needed */
 
     /**
diff --git a/sys/net/crosslayer/netopt/netopt.c b/sys/net/crosslayer/netopt/netopt.c
index 76922c1e3a..930c8ac344 100644
--- a/sys/net/crosslayer/netopt/netopt.c
+++ b/sys/net/crosslayer/netopt/netopt.c
@@ -106,6 +106,7 @@ static const char *_netopt_strmap[] = {
     [NETOPT_LORAWAN_RX2_FREQ]      = "NETOPT_LORAWAN_RX2_FREQ",
     [NETOPT_LORAWAN_MAX_RX_ERROR]  = "NETOPT_LORAWAN_MAX_RX_ERROR",
     [NETOPT_LORAWAN_MIN_RX_SYMBOL] = "NETOPT_LORAWAN_MIN_RX_SYMBOL",
+    [NETOPT_SYNCWORD]              = "NETOPT_SYNCWORD",
     [NETOPT_NUMOF]                 = "NETOPT_NUMOF",
 };