[MOD] Added flag to distinguish DIO and GPIO pins

src/BuildOpt.h

@@ -129,7 +129,7 @@
  * Platform-specific configuration.
  *
  * RADIOLIB_PLATFORM - platform name, used in debugging to quickly check the correct platform is detected.
- * RADIOLIB_NC - alias for unused pin, usually the largest possible value of uint8_t.
+ * RADIOLIB_NC - alias for unused pin, usually the largest possible value of uint32_t.
  * RADIOLIB_DEFAULT_SPI - default SPIClass instance to use.
  * RADIOLIB_NONVOLATILE - macro to place variable into program storage (usually Flash).
  * RADIOLIB_NONVOLATILE_READ_BYTE - function/macro to read variables saved in program storage (usually Flash).
@@ -422,7 +422,7 @@
   // generic non-Arduino platform
   #define RADIOLIB_PLATFORM                           "Generic"
 
-  #define RADIOLIB_NC                                 (0xFF)
+  #define RADIOLIB_NC                                 (0xFFFFFFFF)
   #define RADIOLIB_NONVOLATILE
   #define RADIOLIB_NONVOLATILE_READ_BYTE(addr)        (*((uint8_t *)(void *)(addr)))
   #define RADIOLIB_NONVOLATILE_READ_DWORD(addr)       (*((uint32_t *)(void *)(addr)))

src/Module.cpp

@@ -489,15 +489,17 @@ void Module::setRfSwitchPins(uint32_t rxEn, uint32_t txEn) {
 void Module::setRfSwitchTable(const uint32_t (&pins)[RFSWITCH_MAX_PINS], const RfSwitchMode_t table[]) {
   memcpy(this->rfSwitchPins, pins, sizeof(this->rfSwitchPins));
   this->rfSwitchTable = table;
-  for(size_t i = 0; i < RFSWITCH_MAX_PINS; i++)
+  for(size_t i = 0; i < RFSWITCH_MAX_PINS; i++) {
     this->hal->pinMode(pins[i], this->hal->GpioModeOutput);
+  }
 }
 
 const Module::RfSwitchMode_t *Module::findRfSwitchMode(uint8_t mode) const {
   const RfSwitchMode_t *row = this->rfSwitchTable;
-  while (row && row->mode != MODE_END_OF_TABLE) {
-    if (row->mode == mode)
+  while(row && row->mode != MODE_END_OF_TABLE) {
+    if(row->mode == mode) {
       return row;
+    }
     ++row;
   }
   return nullptr;
@@ -514,8 +516,9 @@ void Module::setRfSwitchState(uint8_t mode) {
   const uint32_t *value = &row->values[0];
   for(size_t i = 0; i < RFSWITCH_MAX_PINS; i++) {
     uint32_t pin = this->rfSwitchPins[i];
-    if (pin != RADIOLIB_NC)
+    if(!(pin & RFSWITCH_PIN_FLAG)) {
       this->hal->digitalWrite(pin, *value);
+    }
     ++value;
   }
 }

src/Module.h

@@ -19,6 +19,13 @@
 */
 #define END_OF_MODE_TABLE    { Module::MODE_END_OF_TABLE, {} }
 
+/*!
+  \def RFSWITCH_PIN_FLAG Bit flag used to mark unused pins in RF switch pin map. This can be either
+  unconnected pin marked with RADIOLIB_NC, or a pin controlled by the radio (e.g. DIOx pins on LR11x0),
+  as opposed to an MCU-controlled GPIO pin.
+*/
+#define RFSWITCH_PIN_FLAG                                       (0x01UL << 31)
+
 /*!
   \defgroup module_spi_command_pos Position of commands in Module::spiConfig command array.
   \{