From ece2621a6f5a09530d76e29de603ae79a841d940 Mon Sep 17 00:00:00 2001
From: jgromes <jan.gromes@gmail.com>
Date: Fri, 31 Mar 2023 22:02:35 +0200
Subject: [PATCH] [SX126x] Fixed packet length in LoRa implicit mode

---
 src/modules/SX126x/SX126x.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/modules/SX126x/SX126x.cpp b/src/modules/SX126x/SX126x.cpp
index ea0a1048..44f95a1a 100644
--- a/src/modules/SX126x/SX126x.cpp
+++ b/src/modules/SX126x/SX126x.cpp
@@ -1287,6 +1287,12 @@ float SX126x::getFrequencyError() {
 
 size_t SX126x::getPacketLength(bool update) {
   (void)update;
+
+  // in implicit mode, return the cached value
+  if((getPacketType() == RADIOLIB_SX126X_PACKET_TYPE_LORA) && (_headerType == RADIOLIB_SX126X_LORA_HEADER_IMPLICIT)) {
+    return(_implicitLen);
+  }
+
   uint8_t rxBufStatus[2] = {0, 0};
   _mod->SPIreadStream(RADIOLIB_SX126X_CMD_GET_RX_BUFFER_STATUS, rxBufStatus, 2);
   return((size_t)rxBufStatus[0]);