Fix incorrect TX packet leight

include/version.h

@@ -1,10 +1,10 @@
 
 #ifndef BUILD_NUMBER
-  #define BUILD_NUMBER "57"
+  #define BUILD_NUMBER "91"
 #endif
 #ifndef VERSION
-  #define VERSION "v0.3.57-290838b - 2022-10-08 15:48:09.958900"
+  #define VERSION "v0.3.91-290838b - 2022-10-08 18:55:29.826499"
 #endif
 #ifndef VERSION_SHORT
-  #define VERSION_SHORT "v0.3.57-290838b"
+  #define VERSION_SHORT "v0.3.91-290838b"
 #endif

lib/RadioLib/src/modules/SX127x/SX127x.cpp

@@ -384,7 +384,7 @@ int16_t SX127x::startReceive(uint8_t len, uint8_t mode) {
 
     // set expected packet length for SF6
     if(_sf == 6) {
-      state |= _mod->SPIsetRegValue(RADIOLIB_SX127X_REG_PAYLOAD_LENGTH, len + RADIOLIB_SX127X_HEADER_LEN - 1);
+      state |= _mod->SPIsetRegValue(RADIOLIB_SX127X_REG_PAYLOAD_LENGTH, len);
     }
 
     // apply fixes to errata
@@ -549,7 +549,7 @@ int16_t SX127x::startTransmit(uint8_t* data, size_t len, uint8_t addr) {
     clearIRQFlags();
 
     // set packet length
-    state |= _mod->SPIsetRegValue(RADIOLIB_SX127X_REG_PAYLOAD_LENGTH, len);
+    state |= _mod->SPIsetRegValue(RADIOLIB_SX127X_REG_PAYLOAD_LENGTH, len + RADIOLIB_SX127X_HEADER_LEN - 1);
 
     // set FIFO pointers
     state |= _mod->SPIsetRegValue(RADIOLIB_SX127X_REG_FIFO_TX_BASE_ADDR, RADIOLIB_SX127X_FIFO_TX_BASE_ADDR_MAX);
@@ -584,6 +584,7 @@ int16_t SX127x::startTransmit(uint8_t* data, size_t len, uint8_t addr) {
     packetLen = RADIOLIB_SX127X_FIFO_THRESH - 1;
     _mod->SPIsetRegValue(RADIOLIB_SX127X_REG_FIFO_THRESH, RADIOLIB_SX127X_TX_START_FIFO_NOT_EMPTY, 7, 7);
   }
+
   _mod->SPIwriteRegister(RADIOLIB_SX127X_REG_FIFO, '<');
   _mod->SPIwriteRegister(RADIOLIB_SX127X_REG_FIFO, 0xFF);
   _mod->SPIwriteRegister(RADIOLIB_SX127X_REG_FIFO, 0x01);