diff --git a/docs/DeviceProfiles.md b/docs/DeviceProfiles.md
index 099e60967..7d676927f 100644
--- a/docs/DeviceProfiles.md
+++ b/docs/DeviceProfiles.md
@@ -91,6 +91,11 @@ The json file can contain multiple profiles. Each profile requires a name and di
 | nrf24.irq     | number    | Interrupt Pin |
 | nrf24.en      | number    | Enable Pin |
 | nrf24.cs      | number    | Chip Select Pin |
+| cmt.sdio      | number    | SDIO Pin |
+| cmt.clk       | number    | CLK Pin |
+| cmt.cs        | number    | CS Pin |
+| cmt.fcs       | number    | FCS Pin |
+| cmt.gpio3     | number    | GPIO3 Pin |
 | eth.enabled   | boolean   | Enable/Disable the ethernet stack |
 | eth.phy_addr  | number    | Unique PHY addr |
 | eth.power     | number    | Power Pin (if available). Use -1 for not assigned pins. |
diff --git a/include/PinMapping.h b/include/PinMapping.h
index b80b3efc7..df8bb7815 100644
--- a/include/PinMapping.h
+++ b/include/PinMapping.h
@@ -18,6 +18,13 @@ struct PinMapping_t {
     int8_t nrf24_irq;
     int8_t nrf24_en;
     int8_t nrf24_cs;
+
+    int8_t cmt_clk;
+    int8_t cmt_cs;
+    int8_t cmt_fcs;
+    int8_t cmt_gpio3;
+    int8_t cmt_sdio;
+
     int8_t eth_phy_addr;
     bool eth_enabled;
     int eth_power;
@@ -40,6 +47,7 @@ class PinMappingClass {
     PinMapping_t& get();
 
     bool isValidNrf24Config();
+    bool isValidCmt2300Config();
     bool isValidEthConfig();
 
 private:
diff --git a/lib/CMT2300a/cmt2300a_hal.c b/lib/CMT2300a/cmt2300a_hal.c
index 4fe016686..3f7111ca3 100644
--- a/lib/CMT2300a/cmt2300a_hal.c
+++ b/lib/CMT2300a/cmt2300a_hal.c
@@ -26,9 +26,9 @@
  * @name    CMT2300A_InitSpi
  * @desc    Initializes the CMT2300A SPI interface.
  * *********************************************************/
-void CMT2300A_InitSpi(void)
+void CMT2300A_InitSpi(int8_t pin_sdio, int8_t pin_clk, int8_t pin_cs, int8_t pin_fcs)
 {
-    cmt_spi3_init();
+    cmt_spi3_init(pin_sdio, pin_clk, pin_cs, pin_fcs);
 }
 
 /*! ********************************************************
diff --git a/lib/CMT2300a/cmt2300a_hal.h b/lib/CMT2300a/cmt2300a_hal.h
index eb4937b37..8a27251fd 100644
--- a/lib/CMT2300a/cmt2300a_hal.h
+++ b/lib/CMT2300a/cmt2300a_hal.h
@@ -36,7 +36,7 @@ extern "C" {
 #define CMT2300A_GetTickCount() millis()
 /* ************************************************************************ */
 
-void CMT2300A_InitSpi(void);
+void CMT2300A_InitSpi(int8_t pin_sdio, int8_t pin_clk, int8_t pin_cs, int8_t pin_fcs);
 
 uint8_t CMT2300A_ReadReg(uint8_t addr);
 void CMT2300A_WriteReg(uint8_t addr, uint8_t dat);
diff --git a/lib/CMT2300a/cmt_spi3.c b/lib/CMT2300a/cmt_spi3.c
index 79805ed2b..464701f68 100644
--- a/lib/CMT2300a/cmt_spi3.c
+++ b/lib/CMT2300a/cmt_spi3.c
@@ -7,12 +7,12 @@
 
 spi_device_handle_t spi_reg, spi_fifo;
 
-void cmt_spi3_init(void)
+void cmt_spi3_init(int8_t pin_sdio, int8_t pin_clk, int8_t pin_cs, int8_t pin_fcs)
 {
     spi_bus_config_t buscfg = {
-        .mosi_io_num = CMT_PIN_SDIO,
+        .mosi_io_num = pin_sdio,
         .miso_io_num = -1, // single wire MOSI/MISO
-        .sclk_io_num = CMT_PIN_CLK,
+        .sclk_io_num = pin_clk,
         .quadwp_io_num = -1,
         .quadhd_io_num = -1,
         .max_transfer_sz = 32,
@@ -23,7 +23,7 @@ void cmt_spi3_init(void)
         .dummy_bits = 0,
         .mode = 0, // SPI mode 0
         .clock_speed_hz = CMT_SPI_CLK,
-        .spics_io_num = CMT_PIN_CS,
+        .spics_io_num = pin_cs,
         .flags = SPI_DEVICE_HALFDUPLEX | SPI_DEVICE_3WIRE,
         .queue_size = 1,
         .pre_cb = NULL,
@@ -42,7 +42,7 @@ void cmt_spi3_init(void)
         .cs_ena_pretrans = 2,
         .cs_ena_posttrans = (uint8_t)(1 / (CMT_SPI_CLK * 10e6 * 2) + 2), // >2 us
         .clock_speed_hz = CMT_SPI_CLK,
-        .spics_io_num = CMT_PIN_FCS,
+        .spics_io_num = pin_fcs,
         .flags = SPI_DEVICE_HALFDUPLEX | SPI_DEVICE_3WIRE,
         .queue_size = 1,
         .pre_cb = NULL,
@@ -50,7 +50,7 @@ void cmt_spi3_init(void)
     };
     ESP_ERROR_CHECK(spi_bus_add_device(SPI2_HOST, &devcfg2, &spi_fifo));
 
-    esp_rom_gpio_connect_out_signal(CMT_PIN_SDIO, spi_periph_signal[SPI2_HOST].spid_out, true, false);
+    esp_rom_gpio_connect_out_signal(pin_sdio, spi_periph_signal[SPI2_HOST].spid_out, true, false);
     delay(100);
 }
 
diff --git a/lib/CMT2300a/cmt_spi3.h b/lib/CMT2300a/cmt_spi3.h
index db11f952c..a29a03dae 100644
--- a/lib/CMT2300a/cmt_spi3.h
+++ b/lib/CMT2300a/cmt_spi3.h
@@ -3,7 +3,7 @@
 
 #include <stdint.h>
 
-void cmt_spi3_init(void);
+void cmt_spi3_init(int8_t pin_sdio, int8_t pin_clk, int8_t pin_cs, int8_t pin_fcs);
 
 void cmt_spi3_write(uint8_t addr, uint8_t dat);
 uint8_t cmt_spi3_read(uint8_t addr);
diff --git a/lib/Hoymiles/src/Hoymiles.cpp b/lib/Hoymiles/src/Hoymiles.cpp
index 0f3f14ff9..59876049c 100644
--- a/lib/Hoymiles/src/Hoymiles.cpp
+++ b/lib/Hoymiles/src/Hoymiles.cpp
@@ -3,12 +3,12 @@
  * Copyright (C) 2022 Thomas Basler and others
  */
 #include "Hoymiles.h"
-#include "inverters/HM_1CH.h"
-#include "inverters/HM_2CH.h"
-#include "inverters/HM_4CH.h"
 #include "inverters/HMS_1CH.h"
 #include "inverters/HMS_2CH.h"
 #include "inverters/HMS_4CH.h"
+#include "inverters/HM_1CH.h"
+#include "inverters/HM_2CH.h"
+#include "inverters/HM_4CH.h"
 #include <Arduino.h>
 
 #define HOY_SEMAPHORE_TAKE() xSemaphoreTake(_xSemaphore, portMAX_DELAY)
@@ -16,73 +16,90 @@
 
 HoymilesClass Hoymiles;
 
-void HoymilesClass::init(SPIClass* initialisedSpiBus, uint8_t pinCE, uint8_t pinIRQ)
+void HoymilesClass::init()
 {
     _xSemaphore = xSemaphoreCreateMutex();
-    HOY_SEMAPHORE_GIVE();  // release before first use
+    HOY_SEMAPHORE_GIVE(); // release before first use
 
     _pollInterval = 0;
     _radioNrf.reset(new HoymilesRadio_NRF());
+    _radioCmt.reset(new HoymilesRadio_CMT());
+}
+
+void HoymilesClass::initNRF(SPIClass* initialisedSpiBus, uint8_t pinCE, uint8_t pinIRQ)
+{
     _radioNrf->init(initialisedSpiBus, pinCE, pinIRQ);
+}
 
-    _radioCmt.reset(new HoymilesRadio_CMT());
-    _radioCmt->init();
+void HoymilesClass::initCMT(int8_t pin_sdio, int8_t pin_clk, int8_t pin_cs, int8_t pin_fcs, int8_t pin_gpio3)
+{
+    _radioCmt->init(pin_sdio, pin_clk, pin_cs, pin_fcs, pin_gpio3);
 }
 
 void HoymilesClass::loop()
 {
     HOY_SEMAPHORE_TAKE();
-    _radioNrf->loop();
-    _radioCmt->loop();
+    if (_radioNrf->isInitialized()) {
+        _radioNrf->loop();
+    }
+
+    if (_radioCmt->isInitialized()) {
+        _radioCmt->loop();
+    }
 
     if (getNumInverters() > 0) {
         if (millis() - _lastPoll > (_pollInterval * 1000)) {
             static uint8_t inverterPos = 0;
 
-            if (_radioNrf->isIdle() && _radioCmt->isIdle()) {
-                std::shared_ptr<InverterAbstract> iv = getInverterByPos(inverterPos);
-                if (iv != nullptr) {
-                    _messageOutput->print("Fetch inverter: ");
-                    _messageOutput->println(iv->serial(), HEX);
-
-                    iv->sendStatsRequest();
-
-                    // Fetch event log
-                    bool force = iv->EventLog()->getLastAlarmRequestSuccess() == CMD_NOK;
-                    iv->sendAlarmLogRequest(force);
-
-                    // Fetch limit
-                    if ((iv->SystemConfigPara()->getLastLimitRequestSuccess() == CMD_NOK)
-                        || ((millis() - iv->SystemConfigPara()->getLastUpdateRequest() > HOY_SYSTEM_CONFIG_PARA_POLL_INTERVAL)
-                            && (millis() - iv->SystemConfigPara()->getLastUpdateCommand() > HOY_SYSTEM_CONFIG_PARA_POLL_MIN_DURATION))) {
-                        _messageOutput->println("Request SystemConfigPara");
-                        iv->sendSystemConfigParaRequest();
-                    }
-
-                    // Set limit if required
-                    if (iv->SystemConfigPara()->getLastLimitCommandSuccess() == CMD_NOK) {
-                        _messageOutput->println("Resend ActivePowerControl");
-                        iv->resendActivePowerControlRequest();
-                    }
-
-                    // Set power status if required
-                    if (iv->PowerCommand()->getLastPowerCommandSuccess() == CMD_NOK) {
-                        _messageOutput->println("Resend PowerCommand");
-                        iv->resendPowerControlRequest();
-                    }
-
-                    // Fetch dev info (but first fetch stats)
-                    if (iv->Statistics()->getLastUpdate() > 0 && (iv->DevInfo()->getLastUpdateAll() == 0 || iv->DevInfo()->getLastUpdateSimple() == 0)) {
-                        _messageOutput->println("Request device info");
-                        iv->sendDevInfoRequest();
-                    }
-                }
+            std::shared_ptr<InverterAbstract> iv = getInverterByPos(inverterPos);
+            if ((iv == nullptr) || ((iv != nullptr) && (!iv->getRadio()->isInitialized()))) {
                 if (++inverterPos >= getNumInverters()) {
                     inverterPos = 0;
                 }
             }
 
-            _lastPoll = millis();
+            if (iv != nullptr && iv->getRadio()->isInitialized() && iv->getRadio()->isIdle()) {
+                _messageOutput->print("Fetch inverter: ");
+                _messageOutput->println(iv->serial(), HEX);
+
+                iv->sendStatsRequest();
+
+                // Fetch event log
+                bool force = iv->EventLog()->getLastAlarmRequestSuccess() == CMD_NOK;
+                iv->sendAlarmLogRequest(force);
+
+                // Fetch limit
+                if ((iv->SystemConfigPara()->getLastLimitRequestSuccess() == CMD_NOK)
+                    || ((millis() - iv->SystemConfigPara()->getLastUpdateRequest() > HOY_SYSTEM_CONFIG_PARA_POLL_INTERVAL)
+                        && (millis() - iv->SystemConfigPara()->getLastUpdateCommand() > HOY_SYSTEM_CONFIG_PARA_POLL_MIN_DURATION))) {
+                    _messageOutput->println("Request SystemConfigPara");
+                    iv->sendSystemConfigParaRequest();
+                }
+
+                // Set limit if required
+                if (iv->SystemConfigPara()->getLastLimitCommandSuccess() == CMD_NOK) {
+                    _messageOutput->println("Resend ActivePowerControl");
+                    iv->resendActivePowerControlRequest();
+                }
+
+                // Set power status if required
+                if (iv->PowerCommand()->getLastPowerCommandSuccess() == CMD_NOK) {
+                    _messageOutput->println("Resend PowerCommand");
+                    iv->resendPowerControlRequest();
+                }
+
+                // Fetch dev info (but first fetch stats)
+                if (iv->Statistics()->getLastUpdate() > 0 && (iv->DevInfo()->getLastUpdateAll() == 0 || iv->DevInfo()->getLastUpdateSimple() == 0)) {
+                    _messageOutput->println("Request device info");
+                    iv->sendDevInfoRequest();
+                }
+
+                if (++inverterPos >= getNumInverters()) {
+                    inverterPos = 0;
+                }
+
+                _lastPoll = millis();
+            }
         }
     }
 
diff --git a/lib/Hoymiles/src/Hoymiles.h b/lib/Hoymiles/src/Hoymiles.h
index 0442fbd02..0d2d1ec5e 100644
--- a/lib/Hoymiles/src/Hoymiles.h
+++ b/lib/Hoymiles/src/Hoymiles.h
@@ -15,7 +15,9 @@
 
 class HoymilesClass {
 public:
-    void init(SPIClass* initialisedSpiBus, uint8_t pinCE, uint8_t pinIRQ);
+    void init();
+    void initNRF(SPIClass* initialisedSpiBus, uint8_t pinCE, uint8_t pinIRQ);
+    void initCMT(int8_t pin_sdio, int8_t pin_clk, int8_t pin_cs, int8_t pin_fcs, int8_t pin_gpio3);
     void loop();
 
     void setMessageOutput(Print* output);
diff --git a/lib/Hoymiles/src/HoymilesRadio.cpp b/lib/Hoymiles/src/HoymilesRadio.cpp
index c68def6e1..3ceb408c4 100644
--- a/lib/Hoymiles/src/HoymilesRadio.cpp
+++ b/lib/Hoymiles/src/HoymilesRadio.cpp
@@ -61,4 +61,14 @@ void HoymilesRadio::dumpBuf(const char* info, uint8_t buf[], uint8_t len)
         Hoymiles.getMessageOutput()->printf("%02X ", buf[i]);
     }
     Hoymiles.getMessageOutput()->println("");
+}
+
+bool HoymilesRadio::isInitialized()
+{
+    return _isInitialized;
+}
+
+bool HoymilesRadio::isIdle()
+{
+    return !_busyFlag;
 }
\ No newline at end of file
diff --git a/lib/Hoymiles/src/HoymilesRadio.h b/lib/Hoymiles/src/HoymilesRadio.h
index 93bc457ae..9e3aad31b 100644
--- a/lib/Hoymiles/src/HoymilesRadio.h
+++ b/lib/Hoymiles/src/HoymilesRadio.h
@@ -11,6 +11,9 @@ class HoymilesRadio {
     serial_u DtuSerial();
     virtual void setDtuSerial(uint64_t serial);
 
+    bool isIdle();
+    bool isInitialized();
+
     template <typename T>
     T* enqueCommand()
     {
@@ -29,4 +32,6 @@ class HoymilesRadio {
 
     serial_u _dtuSerial;
     std::queue<std::shared_ptr<CommandAbstract>> _commandQueue;
+    bool _isInitialized = false;
+    bool _busyFlag = false;
 };
\ No newline at end of file
diff --git a/lib/Hoymiles/src/HoymilesRadio_CMT.cpp b/lib/Hoymiles/src/HoymilesRadio_CMT.cpp
index d91e0ffb0..8db734de1 100644
--- a/lib/Hoymiles/src/HoymilesRadio_CMT.cpp
+++ b/lib/Hoymiles/src/HoymilesRadio_CMT.cpp
@@ -222,7 +222,7 @@ enumCMTresult HoymilesRadio_CMT::cmtProcess(void)
             cmtRxTimeoutCnt++;
         } else {
             uint32_t invSerial = cmtTxBuffer[1] << 24 | cmtTxBuffer[2] << 16 | cmtTxBuffer[3] << 8 | cmtTxBuffer[4]; // read inverter serial from last Tx buffer
-            cmtSwitchInvAndDtuFreq(invSerial, HOY_BOOT_FREQ / 1000, CMT_WORK_FREQ);
+            cmtSwitchInvAndDtuFreq(invSerial, HOY_BOOT_FREQ / 1000, HOYMILES_CMT_WORK_FREQ);
         }
 
         nRes = CMT_RX_TIMEOUT;
@@ -315,12 +315,12 @@ enumCMTresult HoymilesRadio_CMT::cmtProcess(void)
     return nRes;
 }
 
-void HoymilesRadio_CMT::init()
+void HoymilesRadio_CMT::init(int8_t pin_sdio, int8_t pin_clk, int8_t pin_cs, int8_t pin_fcs, int8_t pin_gpio3)
 {
     _dtuSerial.u64 = 0;
     uint8_t tmp;
 
-    CMT2300A_InitSpi();
+    CMT2300A_InitSpi(pin_sdio, pin_clk, pin_cs, pin_fcs);
     if (!CMT2300A_Init()) {
         Hoymiles.getMessageOutput()->println("CMT2300A_Init() failed!");
         return;
@@ -345,11 +345,12 @@ void HoymilesRadio_CMT::init()
         return;
     }
 
-    attachInterrupt(digitalPinToInterrupt(CMT_PIN_GPIO3), std::bind(&HoymilesRadio_CMT::handleIntr, this), RISING);
+    attachInterrupt(digitalPinToInterrupt(pin_gpio3), std::bind(&HoymilesRadio_CMT::handleIntr, this), RISING);
 
-    cmtSwitchDtuFreq(CMT_WORK_FREQ); // start dtu at work freqency, for fast Rx if inverter is already on and frequency switched
+    cmtSwitchDtuFreq(HOYMILES_CMT_WORK_FREQ); // start dtu at work freqency, for fast Rx if inverter is already on and frequency switched
 
     _ChipConnected = true;
+    _isInitialized = true;
 
     Hoymiles.getMessageOutput()->println("CMT init successful");
 }
@@ -447,11 +448,6 @@ void HoymilesRadio_CMT::loop()
     }
 }
 
-bool HoymilesRadio_CMT::isIdle()
-{
-    return !_busyFlag;
-}
-
 bool HoymilesRadio_CMT::isConnected()
 {
     return _ChipConnected;
diff --git a/lib/Hoymiles/src/HoymilesRadio_CMT.h b/lib/Hoymiles/src/HoymilesRadio_CMT.h
index 5c0ff969b..91bec78a2 100644
--- a/lib/Hoymiles/src/HoymilesRadio_CMT.h
+++ b/lib/Hoymiles/src/HoymilesRadio_CMT.h
@@ -39,10 +39,9 @@ typedef enum {
 
 class HoymilesRadio_CMT : public HoymilesRadio {
 public:
-    void init();
+    void init(int8_t pin_sdio, int8_t pin_clk, int8_t pin_cs, int8_t pin_fcs, int8_t pin_gpio3);
     void loop();
 
-    bool isIdle();
     bool isConnected();
 
 private:
@@ -55,8 +54,6 @@ class HoymilesRadio_CMT : public HoymilesRadio {
     std::queue<fragment_t> _rxBuffer;
     TimeoutHelper _rxTimeout;
 
-    bool _busyFlag = false;
-
     bool _ChipConnected = false;
 
     String cmtChToFreq(const uint8_t channel);
diff --git a/lib/Hoymiles/src/HoymilesRadio_NRF.cpp b/lib/Hoymiles/src/HoymilesRadio_NRF.cpp
index ded07f6ee..088acbeb9 100644
--- a/lib/Hoymiles/src/HoymilesRadio_NRF.cpp
+++ b/lib/Hoymiles/src/HoymilesRadio_NRF.cpp
@@ -33,6 +33,7 @@ void HoymilesRadio_NRF::init(SPIClass* initialisedSpiBus, uint8_t pinCE, uint8_t
 
     openReadingPipe();
     _radio->startListening();
+    _isInitialized = true;
 }
 
 void HoymilesRadio_NRF::loop()
@@ -159,11 +160,6 @@ void HoymilesRadio_NRF::setDtuSerial(uint64_t serial)
     openReadingPipe();
 }
 
-bool HoymilesRadio_NRF::isIdle()
-{
-    return !_busyFlag;
-}
-
 bool HoymilesRadio_NRF::isConnected()
 {
     return _radio->isChipConnected();
diff --git a/lib/Hoymiles/src/HoymilesRadio_NRF.h b/lib/Hoymiles/src/HoymilesRadio_NRF.h
index 63e85f5a8..88c0d2f90 100644
--- a/lib/Hoymiles/src/HoymilesRadio_NRF.h
+++ b/lib/Hoymiles/src/HoymilesRadio_NRF.h
@@ -20,7 +20,6 @@ class HoymilesRadio_NRF : public HoymilesRadio {
 
     virtual void setDtuSerial(uint64_t serial);
 
-    bool isIdle();
     bool isConnected();
     bool isPVariant();
 
@@ -46,6 +45,4 @@ class HoymilesRadio_NRF : public HoymilesRadio {
 
     std::queue<fragment_t> _rxBuffer;
     TimeoutHelper _rxTimeout;
-
-    bool _busyFlag = false;
 };
\ No newline at end of file
diff --git a/lib/Hoymiles/src/inverters/InverterAbstract.cpp b/lib/Hoymiles/src/inverters/InverterAbstract.cpp
index 4951cdd8f..372772f09 100644
--- a/lib/Hoymiles/src/inverters/InverterAbstract.cpp
+++ b/lib/Hoymiles/src/inverters/InverterAbstract.cpp
@@ -96,6 +96,11 @@ bool InverterAbstract::getEnableCommands()
     return _enableCommands;
 }
 
+HoymilesRadio* InverterAbstract::getRadio()
+{
+    return _radio;
+}
+
 AlarmLogParser* InverterAbstract::EventLog()
 {
     return _alarmLogParser.get();
diff --git a/lib/Hoymiles/src/inverters/InverterAbstract.h b/lib/Hoymiles/src/inverters/InverterAbstract.h
index c111fc120..e2a358628 100644
--- a/lib/Hoymiles/src/inverters/InverterAbstract.h
+++ b/lib/Hoymiles/src/inverters/InverterAbstract.h
@@ -64,6 +64,8 @@ class InverterAbstract {
     virtual bool sendRestartControlRequest() = 0;
     virtual bool resendPowerControlRequest() = 0;
 
+    HoymilesRadio* getRadio();
+
     AlarmLogParser* EventLog();
     DevInfoParser* DevInfo();
     PowerCommandParser* PowerCommand();
diff --git a/platformio.ini b/platformio.ini
index b2b0d710a..87fe8151d 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -56,12 +56,7 @@ build_flags = ${env.build_flags}
     -DHOYMILES_PIN_IRQ=16
     -DHOYMILES_PIN_CE=4
     -DHOYMILES_PIN_CS=5
-    -DCMT_PIN_CLK=18
-    -DCMT_PIN_SDIO=23
-    -DCMT_PIN_CS=5
-    -DCMT_PIN_FCS=4
-    -DCMT_PIN_GPIO3=15
-    -DCMT_WORK_FREQ=865000
+    -DHOYMILES_CMT_WORK_FREQ=865000
 
 
 [env:olimex_esp32_poe]
diff --git a/src/InverterSettings.cpp b/src/InverterSettings.cpp
index 1562b1359..92c5eadb3 100644
--- a/src/InverterSettings.cpp
+++ b/src/InverterSettings.cpp
@@ -22,11 +22,19 @@ void InverterSettingsClass::init()
 
     // Initialize inverter communication
     MessageOutput.print("Initialize Hoymiles interface... ");
-    if (PinMapping.isValidNrf24Config()) {
+    if (PinMapping.isValidNrf24Config() || PinMapping.isValidCmt2300Config()) {
         SPIClass* spiClass = new SPIClass(VSPI);
         spiClass->begin(pin.nrf24_clk, pin.nrf24_miso, pin.nrf24_mosi, pin.nrf24_cs);
         Hoymiles.setMessageOutput(&MessageOutput);
-        Hoymiles.init(spiClass, pin.nrf24_en, pin.nrf24_irq);
+        Hoymiles.init();
+
+        if (PinMapping.isValidNrf24Config()) {
+            Hoymiles.initNRF(spiClass, pin.nrf24_en, pin.nrf24_irq);
+        }
+
+        if (PinMapping.isValidCmt2300Config()) {
+            Hoymiles.initCMT(pin.cmt_sdio, pin.cmt_clk, pin.cmt_cs, pin.cmt_fcs, pin.cmt_gpio3);
+        }
 
         MessageOutput.println("  Setting radio PA level... ");
         Hoymiles.getRadioNrf()->setPALevel((rf24_pa_dbm_e)config.Dtu_PaLevel);
diff --git a/src/PinMapping.cpp b/src/PinMapping.cpp
index a8e0bc433..c62dc032f 100644
--- a/src/PinMapping.cpp
+++ b/src/PinMapping.cpp
@@ -38,6 +38,26 @@
 #define LED1 -1
 #endif
 
+#ifndef CMT_CLK
+#define CMT_CLK -1
+#endif
+
+#ifndef CMT_CS
+#define CMT_CS -1
+#endif
+
+#ifndef CMT_FCS
+#define CMT_FCS -1
+#endif
+
+#ifndef CMT_GPIO3
+#define CMT_GPIO3 -1
+#endif
+
+#ifndef CMT_SDIO
+#define CMT_SDIO -1
+#endif
+
 PinMappingClass PinMapping;
 
 PinMappingClass::PinMappingClass()
@@ -50,6 +70,12 @@ PinMappingClass::PinMappingClass()
     _pinMapping.nrf24_miso = HOYMILES_PIN_MISO;
     _pinMapping.nrf24_mosi = HOYMILES_PIN_MOSI;
 
+    _pinMapping.cmt_clk = CMT_CLK;
+    _pinMapping.cmt_cs = CMT_CS;
+    _pinMapping.cmt_fcs = CMT_FCS;
+    _pinMapping.cmt_gpio3 = CMT_GPIO3;
+    _pinMapping.cmt_sdio = CMT_SDIO;
+
 #ifdef OPENDTU_ETHERNET
     _pinMapping.eth_enabled = true;
 #else
@@ -104,6 +130,12 @@ bool PinMappingClass::init(const String& deviceMapping)
             _pinMapping.nrf24_miso = doc[i]["nrf24"]["miso"] | HOYMILES_PIN_MISO;
             _pinMapping.nrf24_mosi = doc[i]["nrf24"]["mosi"] | HOYMILES_PIN_MOSI;
 
+            _pinMapping.cmt_clk = doc[i]["cmt"]["clk"] | CMT_CLK;
+            _pinMapping.cmt_cs = doc[i]["cmt"]["cs"] | CMT_CS;
+            _pinMapping.cmt_fcs = doc[i]["cmt"]["fcs"] | CMT_FCS;
+            _pinMapping.cmt_gpio3 = doc[i]["cmt"]["gpio3"] | CMT_GPIO3;
+            _pinMapping.cmt_sdio = doc[i]["cmt"]["sdio"] | CMT_SDIO;
+
 #ifdef OPENDTU_ETHERNET
             _pinMapping.eth_enabled = doc[i]["eth"]["enabled"] | true;
 #else
@@ -143,6 +175,15 @@ bool PinMappingClass::isValidNrf24Config()
         && _pinMapping.nrf24_mosi >= 0;
 }
 
+bool PinMappingClass::isValidCmt2300Config()
+{
+    return _pinMapping.cmt_clk >= 0
+        && _pinMapping.cmt_cs >= 0
+        && _pinMapping.cmt_fcs >= 0
+        && _pinMapping.cmt_gpio3 >= 0
+        && _pinMapping.cmt_sdio >= 0;
+}
+
 bool PinMappingClass::isValidEthConfig()
 {
     return _pinMapping.eth_enabled;