diff --git a/src/ArduinoHal.h b/src/ArduinoHal.h
index a74f73a9..61ad272d 100644
--- a/src/ArduinoHal.h
+++ b/src/ArduinoHal.h
@@ -30,7 +30,9 @@ class ArduinoHal : public RadioLibHal {
 
     /*!
       \brief Arduino Hal constructor. Will not attempt SPI interface initialization.
+      
       \param spi SPI interface to be used, can also use software SPI implementations.
+
       \param spiSettings SPI interface settings.
     */
     ArduinoHal(SPIClass& spi, SPISettings spiSettings = RADIOLIB_DEFAULT_SPI_SETTINGS);
diff --git a/src/Hal.h b/src/Hal.h
index 64bfea2f..bd2369d4 100644
--- a/src/Hal.h
+++ b/src/Hal.h
@@ -6,6 +6,7 @@
 
 /*!
   \class Hal
+
   \brief Hardware abstraction library base interface.
 */
 class RadioLibHal {
@@ -46,11 +47,17 @@ class RadioLibHal {
 
     /*!
       \brief Default constructor.
+
       \param input Value to be used as the "input" GPIO direction.
+
       \param output Value to be used as the "output" GPIO direction.
+
       \param low Value to be used as the "low" GPIO level.
+
       \param high Value to be used as the "high" GPIO level.
+
       \param rising Value to be used as the "rising" GPIO level change direction.
+
       \param falling Value to be used as the "falling" GPIO level change direction.
     */
     RadioLibHal(const uint32_t input, const uint32_t output, const uint32_t low, const uint32_t high, const uint32_t rising, const uint32_t falling);
@@ -60,7 +67,9 @@ class RadioLibHal {
     /*!
       \brief GPIO pin mode (input/output/...) configuration method.
       Must be implemented by the platform-specific hardware abstraction!
+
       \param pin Pin to be changed (platform-specific).
+
       \param mode Mode to be set (platform-specific).
     */
     virtual void pinMode(uint32_t pin, uint32_t mode) = 0;
@@ -68,7 +77,9 @@ class RadioLibHal {
     /*!
       \brief Digital write method.
       Must be implemented by the platform-specific hardware abstraction!
+
       \param pin Pin to be changed (platform-specific).
+
       \param value Value to set (platform-specific).
     */
     virtual void digitalWrite(uint32_t pin, uint32_t value) = 0;
@@ -76,7 +87,9 @@ class RadioLibHal {
     /*!
       \brief Digital read method.
       Must be implemented by the platform-specific hardware abstraction!
+
       \param pin Pin to be changed (platform-specific).
+
       \returns Value read on the pin (platform-specific).
     */
     virtual uint32_t digitalRead(uint32_t pin) = 0;
@@ -84,8 +97,11 @@ class RadioLibHal {
     /*!
       \brief Method to attach function to an external interrupt.
       Must be implemented by the platform-specific hardware abstraction!
+
       \param interruptNum Interrupt number to attach to (platform-specific).
+
       \param interruptCb Interrupt service routine to execute.
+
       \param mode Rising/falling mode (platform-specific).
     */
     virtual void attachInterrupt(uint32_t interruptNum, void (*interruptCb)(void), uint32_t mode) = 0;
@@ -93,6 +109,7 @@ class RadioLibHal {
     /*!
       \brief Method to detach function from an external interrupt.
       Must be implemented by the platform-specific hardware abstraction!
+
       \param interruptNum Interrupt number to detach from (platform-specific).
     */
     virtual void detachInterrupt(uint32_t interruptNum) = 0;
@@ -100,6 +117,7 @@ class RadioLibHal {
     /*!
       \brief Blocking wait function.
       Must be implemented by the platform-specific hardware abstraction!
+
       \param ms Number of milliseconds to wait.
     */
     virtual void delay(unsigned long ms) = 0;
@@ -107,6 +125,7 @@ class RadioLibHal {
     /*!
       \brief Blocking microsecond wait function.
       Must be implemented by the platform-specific hardware abstraction!
+
       \param us Number of microseconds to wait.
     */
     virtual void delayMicroseconds(unsigned long us) = 0;
@@ -114,6 +133,7 @@ class RadioLibHal {
     /*!
       \brief Get number of milliseconds since start.
       Must be implemented by the platform-specific hardware abstraction!
+
       \returns Number of milliseconds since start.
     */
     virtual unsigned long millis() = 0;
@@ -121,6 +141,7 @@ class RadioLibHal {
     /*!
       \brief Get number of microseconds since start.
       Must be implemented by the platform-specific hardware abstraction!
+
       \returns Number of microseconds since start.
     */
     virtual unsigned long micros() = 0;
@@ -128,9 +149,13 @@ class RadioLibHal {
     /*!
       \brief Measure the length of incoming digital pulse in microseconds.
       Must be implemented by the platform-specific hardware abstraction!
+
       \param pin Pin to measure on (platform-specific).
+
       \param state Pin level to monitor (platform-specific).
+
       \param timeout Timeout in microseconds.
+
       \returns Pulse length in microseconds, or 0 if the pulse did not start before timeout.
     */
     virtual long pulseIn(uint32_t pin, uint32_t state, unsigned long timeout) = 0;
@@ -147,7 +172,9 @@ class RadioLibHal {
 
     /*!
       \brief Method to transfer one byte over SPI.
+
       \param b Byte to send.
+
       \returns Received byte.
     */
     virtual uint8_t spiTransfer(uint8_t b) = 0;
@@ -181,14 +208,18 @@ class RadioLibHal {
 
     /*!
       \brief Method to produce a square-wave with 50% duty cycle ("tone") of a given frequency at some pin.
+
       \param pin Pin to be used as the output.
+
       \param frequency Frequency of the square wave.
+
       \param duration Duration of the tone in ms. When set to 0, the tone will be infinite.
     */
     virtual void tone(uint32_t pin, unsigned int frequency, unsigned long duration = 0);
 
     /*!
       \brief Method to stop producing a tone.
+
       \param pin Pin which is currently producing the tone.
     */
     virtual void noTone(uint32_t pin);
@@ -200,7 +231,9 @@ class RadioLibHal {
     
     /*!
       \brief Function to convert from pin number to interrupt number.
+      
       \param pin Pin to convert from.
+
       \returns The interrupt number of a given pin.
     */
     virtual uint32_t pinToInterrupt(uint32_t pin);