[LR11X0] FSK preamble detector length configuration (#1286)

* [LR11X0] pay more attention to selection of FSK preamble detector length
jgromes · Oct 23, 2024 · 434afa5 · 434afa5
1 parent 8bc4b9a
commit 434afa5
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/src/modules/LR11x0/LR11x0.cpp b/src/modules/LR11x0/LR11x0.cpp
@@ -1117,7 +1117,11 @@ int16_t LR11x0::setPreambleLength(size_t preambleLength) {
     return(setPacketParamsLoRa(this->preambleLengthLoRa, this->headerType,  this->implicitLen, this->crcTypeLoRa, (uint8_t)this->invertIQEnabled));
   } else if(type == RADIOLIB_LR11X0_PACKET_TYPE_GFSK) {
     this->preambleLengthGFSK = preambleLength;
-    this->preambleDetLength = RADIOLIB_LR11X0_GFSK_PREAMBLE_DETECT_16_BITS;
+    this->preambleDetLength = preambleLength >= 32 ? RADIOLIB_LR11X0_GFSK_PREAMBLE_DETECT_32_BITS :
+                              preambleLength >= 24 ? RADIOLIB_LR11X0_GFSK_PREAMBLE_DETECT_24_BITS :
+                              preambleLength >= 16 ? RADIOLIB_LR11X0_GFSK_PREAMBLE_DETECT_16_BITS :
+                              preambleLength >   0 ? RADIOLIB_LR11X0_GFSK_PREAMBLE_DETECT_8_BITS :
+                              RADIOLIB_LR11X0_GFSK_PREAMBLE_DETECT_DISABLED;
     return(setPacketParamsGFSK(this->preambleLengthGFSK, this->preambleDetLength, this->syncWordLength, this->addrComp, this->packetType, RADIOLIB_LR11X0_MAX_PACKET_LENGTH, this->crcTypeGFSK, this->whitening));
   }