Add RMT channel and handle getters to GPIO adapter

Author: GOB52

src/m5_unit_component/adapter_gpio.hpp

@@ -66,6 +66,27 @@ class AdapterGPIOBase : public Adapter {
             return false;
         }
 
+        //! @brief Get the RMT TX channel (V1: rmt_channel_t, V2: -1)
+        virtual int rmtTxChannel() const
+        {
+            return -1;
+        }
+        //! @brief Get the RMT RX channel (V1: rmt_channel_t, V2: -1)
+        virtual int rmtRxChannel() const
+        {
+            return -1;
+        }
+        //! @brief Get the RMT TX handle (V2: rmt_channel_handle_t, V1: nullptr)
+        virtual void* rmtTxHandle() const
+        {
+            return nullptr;
+        }
+        //! @brief Get the RMT RX handle (V2: rmt_channel_handle_t, V1: nullptr)
+        virtual void* rmtRxHandle() const
+        {
+            return nullptr;
+        }
+
         //
         inline virtual m5::hal::error::error_t pinModeRX(const gpio::Mode m) override
         {

src/m5_unit_component/adapter_gpio_v1.cpp

@@ -121,6 +121,15 @@ class GPIOImplV1 : public AdapterGPIOBase::GPIOImpl {
         _rx_config.channel = RMT_CHANNEL_MAX;
         _tx_config.channel = RMT_CHANNEL_MAX;
     }
+    int rmtTxChannel() const override
+    {
+        return _tx_config.channel;
+    }
+    int rmtRxChannel() const override
+    {
+        return _rx_config.channel;
+    }
+
     virtual ~GPIOImplV1()
     {
         if (_tx_config.channel != RMT_CHANNEL_MAX) {

src/m5_unit_component/adapter_gpio_v2.cpp

@@ -143,6 +143,15 @@ class GPIOImplV2 : public AdapterGPIO::GPIOImpl {
         : AdapterGPIOBase::GPIOImpl(rx_pin, tx_pin), _sem(xSemaphoreCreateMutex())
     {
     }
+    void *rmtTxHandle() const override
+    {
+        return _tx_handle;
+    }
+    void *rmtRxHandle() const override
+    {
+        return _rx_handle;
+    }
+
     virtual ~GPIOImplV2()
     {
         if (_tx_handle) {