From e4eec9c5bd5fd7300bf810ae94a317add3643781 Mon Sep 17 00:00:00 2001
From: jgromes <jan.gromes@gmail.com>
Date: Sun, 21 Nov 2021 21:16:31 +0100
Subject: [PATCH] [nRF24] Fixed known binary receive length

---
 src/modules/nRF24/nRF24.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/modules/nRF24/nRF24.cpp b/src/modules/nRF24/nRF24.cpp
index 683d22f6..d767dbd3 100644
--- a/src/modules/nRF24/nRF24.cpp
+++ b/src/modules/nRF24/nRF24.cpp
@@ -231,9 +231,10 @@ int16_t nRF24::readData(uint8_t* data, size_t len) {
   RADIOLIB_ASSERT(state);
 
   // get packet length
-  size_t length = len;
-  if(len == RADIOLIB_NRF24_MAX_PACKET_LENGTH) {
-    length = getPacketLength();
+  size_t length = getPacketLength();
+  if((len != 0) && (len < length)) {
+    // user requested less data than we got, only return what was requested
+    length = len;
   }
 
   // read packet data