From 02151deae4bdcc4bb36ba33c3f98d529a6636a52 Mon Sep 17 00:00:00 2001
From: Jose Alamos <jose@alamos.cc>
Date: Mon, 8 Feb 2021 15:11:00 +0100
Subject: [PATCH] net/loramac: add redundancy configuration parameter

---
 sys/include/net/loramac.h          | 15 +++++++++++++++
 sys/net/link_layer/Kconfig.lorawan | 12 ++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/sys/include/net/loramac.h b/sys/include/net/loramac.h
index 4d872c45cc..1ab6e09cdc 100644
--- a/sys/include/net/loramac.h
+++ b/sys/include/net/loramac.h
@@ -284,6 +284,21 @@ extern "C" {
 #define CONFIG_LORAMAC_DEFAULT_TX_MODE          (LORAMAC_TX_CNF)
 #endif
 
+/**
+ * @brief   Default redundancy for unconfirmed uplink
+ *
+ * This corresponds to the number of unconfirmed uplink retransmissions when
+ * using ADR. This configuration does not affect confirmed uplinks.  By
+ * default, uplinks are sent without retransmissions (this means, the device
+ * sends only one uplink packet)
+ *
+ * @note This value MUST NOT be greater than 14, since the LinkADRCommand it's
+ *       already limited by a 4 bit value (therefore, 15 uplink transmissions)
+ */
+#ifndef CONFIG_LORAMAC_DEFAULT_REDUNDANCY
+#define CONFIG_LORAMAC_DEFAULT_REDUNDANCY       (0U)
+#endif
+
 /**
  * @brief   Enable/disable adaptive datarate state
  *
diff --git a/sys/net/link_layer/Kconfig.lorawan b/sys/net/link_layer/Kconfig.lorawan
index bc5aeefdb1..3853b413f4 100644
--- a/sys/net/link_layer/Kconfig.lorawan
+++ b/sys/net/link_layer/Kconfig.lorawan
@@ -524,4 +524,16 @@ config LORAMAC_DEFAULT_MIN_RX_SYMBOLS
         system timer. Refer SX1276_settings_for_LoRaWAN_v2p2.pdf
         (AN1200.24) from Semtech for more information.
 
+config LORAMAC_DEFAULT_REDUNDANCY
+    int "Default redundancy for unconfirmed uplinks"
+    depends on USEMODULE_GNRC_LORAWAN
+    default 0
+    range 0 14
+    help
+         This corresponds to the number of unconfirmed
+         uplink retransmissions when using ADR. This
+         configuration does not affect confirmed uplinks.
+         By default, uplinks are sent without retransmissions
+         (this means, the device sends only one uplink packet)
+
 endif # KCONFIG_USEMODULE_LORAWAN