Implement setDIOMapping for CC1101

src/modules/CC1101/CC1101.cpp

@@ -885,6 +885,13 @@ void CC1101::readBit(RADIOLIB_PIN_TYPE pin) {
   updateDirectBuffer((uint8_t)digitalRead(pin));
 }
 
+int16_t CC1101::setDIOMapping(RADIOLIB_PIN_TYPE pin, uint8_t value) {
+  if (pin > 2)
+    return RADIOLIB_ERR_INVALID_DIO_PIN;
+
+  return(SPIsetRegValue(RADIOLIB_CC1101_REG_IOCFG0 - pin, value));
+}
+
 int16_t CC1101::config() {
   // Reset the radio. Registers may be dirty from previous usage.
   SPIsendCommand(RADIOLIB_CC1101_CMD_RESET);

src/modules/CC1101/CC1101.h

@@ -932,6 +932,17 @@ class CC1101: public PhysicalLayer {
     */
     void readBit(RADIOLIB_PIN_TYPE pin);
 
+    /*!
+      \brief Configure DIO pin mapping to get a given signal on a DIO pin (if available).
+
+      \param pin Pin number onto which a signal is to be placed.
+
+      \param value The value that indicates which function to place on that pin. See chip datasheet for details.
+
+      \returns \ref status_codes
+    */
+    int16_t setDIOMapping(RADIOLIB_PIN_TYPE pin, uint8_t value);
+
   #if !defined(RADIOLIB_GODMODE) && !defined(RADIOLIB_LOW_LEVEL)
     protected:
   #endif