Implement HoymilesRadio_CMT

lib/CMT2300a/cmt2300a_params.h

@@ -4,212 +4,124 @@
 #include "cmt2300a_defs.h"
 #include <stdint.h>
 
-/* [CMT Bank] */
+/* [CMT Bank] with RSSI offset of +- 0 (and 13dBm) */
-static uint8_t g_cmt2300aCmtBank_default[CMT2300A_CMT_BANK_SIZE] = {
+static uint8_t g_cmt2300aCmtBank[CMT2300A_CMT_BANK_SIZE] = {
-    0x00,
+0x00,
-    0x66,
+0x66,
-    0xEC,
+0xEC,
-    0x1D,
+0x1C,
-    0x70,
+0x70,
-    0x80,
+0x80,
-    0x14,
+0x14,
-    0x08,
+0x08,
-    0x91,
+0x11,
-    0x02,
+0x02,
-    0x02,
+0x02,
-    0xD0,
+0x00,
-};
-
-/* [CMT Bank] with RSSI offset of +- 0 and 13dBm*/
-static uint8_t g_cmt2300aCmtBank_RSSI_0[CMT2300A_CMT_BANK_SIZE] = {
-    0x00,
-    0x66,
-    0xEC,
-    0x1C,
-    0x70,
-    0x80,
-    0x14,
-    0x08,
-    0x11,
-    0x02,
-    0x02,
-    0x00,
 };
 
 /* [System Bank] */
 static uint8_t g_cmt2300aSystemBank[CMT2300A_SYSTEM_BANK_SIZE] = {
-    0xAE,
+0xAE,
-    0xE0,
+0xE0,
-    0x35,
+0x35,
-    0x00,
+0x00,
-    0x00,
+0x00,
-    0xF4,
+0xF4,
-    0x10,
+0x10,
-    0xE2,
+0xE2,
-    0x42,
+0x42,
-    0x20,
+0x20,
-    0x0C,
+0x0C,
-    0x81,
+0x81,
-};
-
-/* [Frequency Bank] 868 MHz (default) */
-static uint8_t g_cmt2300aFrequencyBank_868[CMT2300A_FREQUENCY_BANK_SIZE] = {
-    0x42,
-    0xCF,
-    0xA7,
-    0x8C,
-    0x42,
-    0xC4,
-    0x4E,
-    0x1C,
-};
-
-/* [Frequency Bank] 863 MHz (EU) */
-static uint8_t g_cmt2300aFrequencyBank_863[CMT2300A_FREQUENCY_BANK_SIZE] = {
-    0x42,
-    0x6D,
-    0x80,
-    0x86,
-    0x42,
-    0x62,
-    0x27,
-    0x16,
 };
 
 /* [Frequency Bank] 860 MHz */
-static uint8_t g_cmt2300aFrequencyBank_860[CMT2300A_FREQUENCY_BANK_SIZE] = {
+static uint8_t g_cmt2300aFrequencyBank[CMT2300A_FREQUENCY_BANK_SIZE] = {
-    0x42,
+0x42,
-    0x32,
+0x32,
-    0xCF,
+0xCF,
-    0x82,
+0x82,
-    0x42,
+0x42,
-    0x27,
+0x27,
-    0x76,
+0x76,
-    0x12,
+0x12,
 };
 
 /* [Data Rate Bank] */
 static uint8_t g_cmt2300aDataRateBank[CMT2300A_DATA_RATE_BANK_SIZE] = {
-    0xA6,
+0xA6,
-    0xC9,
+0xC9,
-    0x20,
+0x20,
-    0x20,
+0x20,
-    0xD2,
+0xD2,
-    0x35,
+0x35,
-    0x0C,
+0x0C,
-    0x0A,
+0x0A,
-    0x9F,
+0x9F,
-    0x4B,
+0x4B,
-    0x29,
+0x29,
-    0x29,
+0x29,
-    0xC0,
+0xC0,
-    0x14,
+0x14,
-    0x05,
+0x05,
-    0x53,
+0x53,
-    0x10,
+0x10,
-    0x00,
+0x00,
-    0xB4,
+0xB4,
-    0x00,
+0x00,
-    0x00,
+0x00,
-    0x01,
+0x01,
-    0x00,
+0x00,
-    0x00,
+0x00,
-};
-
-/* [Baseband Bank] - default */
-static uint8_t g_cmt2300aBasebandBank_default[CMT2300A_BASEBAND_BANK_SIZE] = {
-    0x12,
-    0x1E,
-    0x00,
-    0xAA,
-    0x06,
-    0x00,
-    0x00,
-    0x00,
-    0x00,
-    0xD6,
-    0xD5,
-    0xD4,
-    0x2D,
-    0x01,
-    0x1F,
-    0x00,
-    0x00,
-    0x00,
-    0x00,
-    0x00,
-    0xC3,
-    0x00,
-    0x00,
-    0x60,
-    0xFF,
-    0x00,
-    0x00,
-    0x1F,
-    0x10,
 };
 
 /* [Baseband Bank] - EU */
-static uint8_t g_cmt2300aBasebandBank_EU[CMT2300A_BASEBAND_BANK_SIZE] = {
+static uint8_t g_cmt2300aBasebandBank[CMT2300A_BASEBAND_BANK_SIZE] = {
-    0x12,
+0x12,
-    0x1E,
+0x1E,
-    0x00,
+0x00,
-    0xAA,
+0xAA,
-    0x06,
+0x06,
-    0x00,
+0x00,
-    0x00,
+0x00,
-    0x00,
+0x00,
-    0x00,
+0x00,
-    0x48,
+0x48,
-    0x5A,
+0x5A,
-    0x48,
+0x48,
-    0x4D,
+0x4D,
-    0x01,
+0x01,
-    0x1D, // default should be 0x1F (32 bytes length), but 0x45 is 0x01 -> variable length, so this value is ignored
+0x1F,
-    0x00,
+0x00,
-    0x00,
+0x00,
-    0x00,
+0x00,
-    0x00,
+0x00,
-    0x00,
+0x00,
-    0xC3,
+0xC3,
-    0x00,
+0x00,
-    0x00,
+0x00,
-    0x60,
+0x60,
-    0xFF,
+0xFF,
-    0x00,
+0x00,
-    0x00,
+0x00,
-    0x1F,
+0x1F,
-    0x10,
+0x10,
-};
-
-/* [Tx Bank] 20 dBm */
-static uint8_t g_cmt2300aTxBank_20dBm[CMT2300A_TX_BANK_SIZE] = {
-    0x70,
-    0x4D,
-    0x06,
-    0x00,
-    0x07,
-    0x50,
-    0x00,
-    0x8A,
-    0x18,
-    0x3F,
-    0x7F,
 };
 
 /* [Tx Bank] 13 dBm */
-static uint8_t g_cmt2300aTxBank_13dBm[CMT2300A_TX_BANK_SIZE] = {
+static uint8_t g_cmt2300aTxBank[CMT2300A_TX_BANK_SIZE] = {
-    0x70,
+0x70,
-    0x4D,
+0x4D,
-    0x06,
+0x06,
-    0x00,
+0x00,
-    0x07,
+0x07,
-    0x50,
+0x50,
-    0x00,
+0x00,
-    0x42,
+0x42,
-    0x0C,
+0x0C,
-    0x3F,
+0x3F,
-    0x7F,
+0x7F,
 };
 
 #endif

lib/Hoymiles/src/Hoymiles.cpp

@@ -24,18 +24,22 @@ void HoymilesClass::init(SPIClass* initialisedSpiBus, uint8_t pinCE, uint8_t pin
     _pollInterval = 0;
     _radioNrf.reset(new HoymilesRadio_NRF());
     _radioNrf->init(initialisedSpiBus, pinCE, pinIRQ);
+
+    _radioCmt.reset(new HoymilesRadio_CMT());
+    _radioCmt->init();
 }
 
 void HoymilesClass::loop()
 {
     HOY_SEMAPHORE_TAKE();
     _radioNrf->loop();
+    _radioCmt->loop();
 
     if (getNumInverters() > 0) {
         if (millis() - _lastPoll > (_pollInterval * 1000)) {
             static uint8_t inverterPos = 0;
 
-            if (_radioNrf->isIdle()) {
+            if (_radioNrf->isIdle() && _radioCmt->isIdle()) {
                 std::shared_ptr<InverterAbstract> iv = getInverterByPos(inverterPos);
                 if (iv != nullptr) {
                     _messageOutput->print("Fetch inverter: ");
@@ -89,11 +93,11 @@ std::shared_ptr<InverterAbstract> HoymilesClass::addInverter(const char* name, u
 {
     std::shared_ptr<InverterAbstract> i = nullptr;
     if (HMS_4CH::isValidSerial(serial)) {
-        i = std::make_shared<HMS_4CH>(_radioNrf.get(), serial);
+        i = std::make_shared<HMS_4CH>(_radioCmt.get(), serial);
     } else if (HMS_2CH::isValidSerial(serial)) {
-        i = std::make_shared<HMS_2CH>(_radioNrf.get(), serial);
+        i = std::make_shared<HMS_2CH>(_radioCmt.get(), serial);
     } else if (HMS_1CH::isValidSerial(serial)) {
-        i = std::make_shared<HMS_1CH>(_radioNrf.get(), serial);
+        i = std::make_shared<HMS_1CH>(_radioCmt.get(), serial);
     } else if (HM_4CH::isValidSerial(serial)) {
         i = std::make_shared<HM_4CH>(_radioNrf.get(), serial);
     } else if (HM_2CH::isValidSerial(serial)) {

lib/Hoymiles/src/Hoymiles.h

@@ -2,6 +2,7 @@
 #pragma once
 
 #include "HoymilesRadio_NRF.h"
+#include "HoymilesRadio_CMT.h"
 #include "inverters/InverterAbstract.h"
 #include "types.h"
 #include <Print.h>
@@ -35,6 +36,7 @@ public:
 private:
     std::vector<std::shared_ptr<InverterAbstract>> _inverters;
     std::unique_ptr<HoymilesRadio_NRF> _radioNrf;
+    std::unique_ptr<HoymilesRadio_CMT> _radioCmt;
 
     SemaphoreHandle_t _xSemaphore;
 

lib/Hoymiles/src/HoymilesRadio_CMT.cpp

@@ -0,0 +1,495 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2022 Thomas Basler and others
+ */
+#include "HoymilesRadio_CMT.h"
+#include "Hoymiles.h"
+#include "crc.h"
+#include <FunctionalInterrupt.h>
+#include <cmt2300a.h>
+#include <cmt2300a_params.h>
+
+#define CMT2300A_ONE_STEP_SIZE 2500 // frequency channel step size for fast frequency hopping operation: One step size is 2.5 kHz.
+#define FH_OFFSET 100 // value * CMT2300A_ONE_STEP_SIZE = channel frequency offset
+#define HOY_BASE_FREQ 860000000 // Hoymiles base frequency for CMD56 channels is 860.00 MHz
+#define HOY_BOOT_FREQ 868000000 // Hoymiles boot/init frequency after power up inverter
+
+String HoymilesRadio_CMT::cmtChToFreq(const uint8_t channel)
+{
+    return String((HOY_BASE_FREQ + (cmtBaseChOff860 + channel) * FH_OFFSET * CMT2300A_ONE_STEP_SIZE) / 1000000.0, 2) + " MHz";
+}
+
+void HoymilesRadio_CMT::cmtSwitchChannel(const uint8_t channel)
+{
+    yield();
+    CMT2300A_SetFrequencyChannel(channel);
+    yield();
+    cmtActualCh = channel;
+    // Hoymiles.getMessageOutput()->println("[cmtSwitchChannel] switched channel to " + cmtGetActFreq());
+}
+
+uint8_t HoymilesRadio_CMT::cmtFreqToChan(const String func_name, const String var_name, const uint32_t freq_kHz)
+{
+    if ((freq_kHz % 250) != 0) {
+        Hoymiles.getMessageOutput()->println(func_name + " " + var_name + " " + String(freq_kHz / 1000.0, 3) + " MHz is not divisible by 250 kHz!");
+        return 0xFF; // ERROR
+    }
+    const uint32_t min_Freq_kHz = (HOY_BASE_FREQ + (cmtBaseChOff860 >= 1 ? cmtBaseChOff860 : 1) * CMT2300A_ONE_STEP_SIZE * FH_OFFSET) / 1000; // frequency can not be lower than actual initailized base freq
+    const uint32_t max_Freq_kHz = (HOY_BASE_FREQ + 0xFE * CMT2300A_ONE_STEP_SIZE * FH_OFFSET) / 1000; // =923500, 0xFF does not work
+    if (freq_kHz < min_Freq_kHz || freq_kHz > max_Freq_kHz) {
+        Hoymiles.getMessageOutput()->println(func_name + " " + var_name + " " + String(freq_kHz / 1000.0, 2) + " MHz is out of Hoymiles/CMT range! (" + String(min_Freq_kHz / 1000.0, 2) + " MHz - " + String(max_Freq_kHz / 1000.0, 2) + " MHz)");
+        return 0xFF; // ERROR
+    }
+    if (freq_kHz < 863000 || freq_kHz > 870000)
+        Hoymiles.getMessageOutput()->println(func_name + " !!! caution: " + var_name + " " + String(freq_kHz / 1000.0, 2) + " MHz is out of EU legal range! (863 - 870 MHz)");
+    return (freq_kHz * 1000 - HOY_BASE_FREQ) / CMT2300A_ONE_STEP_SIZE / FH_OFFSET - cmtBaseChOff860; // frequency to channel
+}
+
+bool HoymilesRadio_CMT::cmtSwitchDtuFreq(const uint32_t to_freq_kHz)
+{
+    const uint8_t toChannel = cmtFreqToChan("[cmtSwitchDtuFreq]", "to_freq_kHz", to_freq_kHz);
+    if (toChannel == 0xFF)
+        return false;
+
+    cmtSwitchChannel(toChannel);
+
+    return true;
+}
+
+bool HoymilesRadio_CMT::cmtConfig(void)
+{
+#ifdef ENABLE_ANTENNA_SWITCH
+    /* If you enable antenna switch, GPIO1/GPIO2 will output RX_ACTIVE/TX_ACTIVE,
+       and it can't output INT1/INT2 via GPIO1/GPIO2 */
+    CMT2300A_EnableAntennaSwitch(0);
+
+#else
+    /* Config GPIOs */
+    CMT2300A_ConfigGpio(
+        CMT2300A_GPIO3_SEL_INT2);
+
+    /* Config interrupt */
+    CMT2300A_ConfigInterrupt(
+        CMT2300A_INT_SEL_TX_DONE, /* Config INT1 */
+        CMT2300A_INT_SEL_PKT_OK /* Config INT2 */
+    );
+#endif
+
+    /* Enable interrupt */
+    CMT2300A_EnableInterrupt(
+        CMT2300A_MASK_TX_DONE_EN | CMT2300A_MASK_PREAM_OK_EN | CMT2300A_MASK_SYNC_OK_EN | CMT2300A_MASK_CRC_OK_EN | CMT2300A_MASK_PKT_DONE_EN);
+
+    /* Disable low frequency OSC calibration */
+    // CMT2300A_EnableLfosc(FALSE);
+
+    CMT2300A_SetFrequencyStep(100); // set FH_OFFSET to 100 (frequency = base freq + 2.5kHz*FH_OFFSET*FH_CHANNEL)
+
+    /* Use a single 64-byte FIFO for either Tx or Rx */
+    CMT2300A_EnableFifoMerge(true);
+
+    /* Go to sleep for configuration to take effect */
+    if (!CMT2300A_GoSleep())
+        return false; // CMT2300A not switched to sleep mode!
+
+    return true;
+}
+
+bool HoymilesRadio_CMT::cmtSwitchInvAndDtuFreq(const uint64_t inv_serial, const uint32_t from_freq_kHz, const uint32_t to_freq_kHz)
+{
+    const uint8_t fromChannel = cmtFreqToChan("[cmtSwitchInvAndDtuFreq]", "from_freq_kHz", from_freq_kHz);
+    const uint8_t toChannel = cmtFreqToChan("[cmtSwitchInvAndDtuFreq]", "to_freq_kHz", to_freq_kHz);
+    if (fromChannel == 0xFF || toChannel == 0xFF)
+        return false;
+
+    cmtSwitchChannel(fromChannel);
+    cmtTx56toCh = toChannel;
+
+    // CMD56 for inverter frequency/channel switch
+    cmtTxBuffer[0] = 0x56;
+    // cmtTxBuffer[1-4] = last inverter serial
+    // cmtTxBuffer[5-8] = dtu serial
+    cmtTxBuffer[9] = 0x02;
+    cmtTxBuffer[10] = 0x15;
+    cmtTxBuffer[11] = 0x21;
+    cmtTxBuffer[12] = (uint8_t)(cmtBaseChOff860 + toChannel);
+    cmtTxBuffer[13] = 0x14;
+    cmtTxBuffer[14] = crc8(cmtTxBuffer, 14);
+
+    Hoymiles.getMessageOutput()->print("TX CMD56 ");
+    Hoymiles.getMessageOutput()->print(cmtChToFreq(cmtActualCh));
+    Hoymiles.getMessageOutput()->print(" --> ");
+    dumpBuf("", cmtTxBuffer, 15);
+
+    cmtTxLength = 15;
+    cmtTxTimeout = 100;
+
+    cmtNextState = CMT_STATE_TX_START;
+
+    //_busyFlag = true;
+
+    return true;
+}
+
+enumCMTresult HoymilesRadio_CMT::cmtProcess(void)
+{
+    enumCMTresult nRes = CMT_BUSY;
+
+    switch (cmtNextState) {
+    case CMT_STATE_IDLE: {
+        nRes = CMT_IDLE;
+        break;
+    }
+    case CMT_STATE_RX_START: {
+        CMT2300A_GoStby();
+        CMT2300A_ClearInterruptFlags();
+
+        /* Must clear FIFO after enable SPI to read or write the FIFO */
+        CMT2300A_EnableReadFifo();
+        CMT2300A_ClearRxFifo();
+
+        if (!CMT2300A_GoRx())
+            cmtNextState = CMT_STATE_ERROR;
+        else
+            cmtNextState = CMT_STATE_RX_WAIT;
+
+        cmtRxTimeCount = CMT2300A_GetTickCount();
+        cmtRxTimeout = 200;
+
+        break;
+    }
+    case CMT_STATE_RX_WAIT: {
+#ifdef ENABLE_ANTENNA_SWITCH
+        if (CMT2300A_MASK_PKT_OK_FLG & CMT2300A_ReadReg(CMT2300A_CUS_INT_FLAG)) /* Read PKT_OK flag */
+#else
+        if (_packetReceived) /* Read INT2, PKT_OK */
+#endif
+        {
+            Hoymiles.getMessageOutput()->println("Interrupt received");
+            _packetReceived = false; // reset interrupt
+            cmtNextState = CMT_STATE_RX_DONE;
+        }
+
+        if ((CMT2300A_GetTickCount() - cmtRxTimeCount) > cmtRxTimeout)
+            cmtNextState = CMT_STATE_RX_TIMEOUT;
+
+        break;
+    }
+    case CMT_STATE_RX_DONE: {
+        CMT2300A_GoStby();
+
+        bool isLastFrame = false;
+
+        uint8_t state = CMT2300A_ReadReg(CMT2300A_CUS_INT_FLAG);
+        if ((state & 0x1b) == 0x1b) {
+            cmtRxTimeoutCnt = 0;
+
+            if (!(_rxBuffer.size() > FRAGMENT_BUFFER_SIZE)) {
+                fragment_t f;
+                memset(f.fragment, 0xcc, MAX_RF_PAYLOAD_SIZE);
+                CMT2300A_ReadFifo(&f.len, 1); // first byte in FiFo is length
+                f.channel = cmtActualCh;
+                f.rssi = CMT2300A_GetRssiDBm();
+                if (f.len > MAX_RF_PAYLOAD_SIZE)
+                    f.len = MAX_RF_PAYLOAD_SIZE;
+                CMT2300A_ReadFifo(f.fragment, f.len);
+                if (f.fragment[9] & 0x80) // last frame detection for end Rx
+                    isLastFrame = true;
+                _rxBuffer.push(f);
+            } else {
+                Hoymiles.getMessageOutput()->println("Buffer full");
+            }
+        } else if ((state & 0x19) == 0x19)
+            Hoymiles.getMessageOutput()->println("[CMT_STATE_RX_DONE] state: " + String(state, HEX) + " (CRC_ERROR)");
+        else
+            Hoymiles.getMessageOutput()->println("[CMT_STATE_RX_DONE] wrong state: " + String(state, HEX));
+
+        CMT2300A_ClearInterruptFlags();
+
+        CMT2300A_GoSleep();
+
+        if (isLastFrame) // last frame received
+            cmtNextState = CMT_STATE_IDLE;
+        else
+            cmtNextState = CMT_STATE_RX_START; // receive next frame(s)
+
+        nRes = CMT_RX_DONE;
+        break;
+    }
+    case CMT_STATE_RX_TIMEOUT: {
+        CMT2300A_GoSleep();
+
+        Hoymiles.getMessageOutput()->println("RX timeout!");
+
+        cmtNextState = CMT_STATE_IDLE;
+
+        // send CMD56 after 3 Rx timeouts
+        if (cmtRxTimeoutCnt < 2)
+            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);
+        }
+
+        nRes = CMT_RX_TIMEOUT;
+        break;
+    }
+    case CMT_STATE_TX_START: {
+        CMT2300A_GoStby();
+        CMT2300A_ClearInterruptFlags();
+
+        /* Must clear FIFO after enable SPI to read or write the FIFO */
+        CMT2300A_EnableWriteFifo();
+        CMT2300A_ClearTxFifo();
+
+        CMT2300A_WriteReg(CMT2300A_CUS_PKT15, cmtTxLength); // set Tx length
+        /* The length need be smaller than 32 */
+        CMT2300A_WriteFifo(cmtTxBuffer, cmtTxLength);
+
+        if (!(CMT2300A_ReadReg(CMT2300A_CUS_FIFO_FLAG) & CMT2300A_MASK_TX_FIFO_NMTY_FLG))
+            cmtNextState = CMT_STATE_ERROR;
+
+        if (!CMT2300A_GoTx())
+            cmtNextState = CMT_STATE_ERROR;
+        else
+            cmtNextState = CMT_STATE_TX_WAIT;
+
+        cmtTxTimeCount = CMT2300A_GetTickCount();
+
+        break;
+    }
+    case CMT_STATE_TX_WAIT: {
+        // #ifdef ENABLE_ANTENNA_SWITCH
+        if (CMT2300A_MASK_TX_DONE_FLG & CMT2300A_ReadReg(CMT2300A_CUS_INT_CLR1)) /* Read TX_DONE flag */
+        // #else
+        //             if(CMT2300A_ReadGpio1())  /* Read INT1, TX_DONE */
+        // #endif
+        {
+            cmtNextState = CMT_STATE_TX_DONE;
+        }
+
+        if ((CMT2300A_GetTickCount() - cmtTxTimeCount) > cmtTxTimeout)
+            cmtNextState = CMT_STATE_TX_TIMEOUT;
+
+        break;
+    }
+    case CMT_STATE_TX_DONE: {
+        CMT2300A_ClearInterruptFlags();
+        CMT2300A_GoSleep();
+
+        if (cmtTx56toCh != 0xFF) {
+            cmtSwitchChannel(cmtTx56toCh);
+            cmtTx56toCh = 0xFF;
+            cmtNextState = CMT_STATE_IDLE;
+        } else
+            cmtNextState = CMT_STATE_RX_START; // receive answer
+
+        nRes = CMT_TX_DONE;
+        break;
+    }
+    case CMT_STATE_TX_TIMEOUT: {
+        CMT2300A_GoSleep();
+
+        Hoymiles.getMessageOutput()->println("TC timeout!");
+
+        if (cmtTx56toCh != 0xFF) {
+            cmtTx56toCh = 0xFF;
+            cmtNextState = CMT_STATE_IDLE;
+        }
+
+        cmtNextState = CMT_STATE_IDLE;
+
+        nRes = CMT_TX_TIMEOUT;
+        break;
+    }
+    case CMT_STATE_ERROR: {
+        CMT2300A_SoftReset();
+        CMT2300A_DelayMs(20);
+
+        CMT2300A_GoStby();
+        cmtConfig();
+
+        cmtNextState = CMT_STATE_IDLE;
+
+        nRes = CMT_ERROR;
+        break;
+    }
+    default:
+        break;
+    }
+
+    return nRes;
+}
+
+void HoymilesRadio_CMT::init()
+{
+    _dtuSerial.u64 = 0;
+    uint8_t tmp;
+
+    CMT2300A_InitSpi();
+    if (!CMT2300A_Init()) {
+        Hoymiles.getMessageOutput()->println("CMT2300A_Init() failed!");
+        return;
+    }
+
+    /* config registers */
+    CMT2300A_ConfigRegBank(CMT2300A_CMT_BANK_ADDR, g_cmt2300aCmtBank, CMT2300A_CMT_BANK_SIZE);
+    CMT2300A_ConfigRegBank(CMT2300A_SYSTEM_BANK_ADDR, g_cmt2300aSystemBank, CMT2300A_SYSTEM_BANK_SIZE);
+    CMT2300A_ConfigRegBank(CMT2300A_FREQUENCY_BANK_ADDR, g_cmt2300aFrequencyBank, CMT2300A_FREQUENCY_BANK_SIZE); // cmtBaseChOff860 need to be changed to the same frequency for channel calculation
+    CMT2300A_ConfigRegBank(CMT2300A_DATA_RATE_BANK_ADDR, g_cmt2300aDataRateBank, CMT2300A_DATA_RATE_BANK_SIZE);
+    CMT2300A_ConfigRegBank(CMT2300A_BASEBAND_BANK_ADDR, g_cmt2300aBasebandBank, CMT2300A_BASEBAND_BANK_SIZE);
+    CMT2300A_ConfigRegBank(CMT2300A_TX_BANK_ADDR, g_cmt2300aTxBank, CMT2300A_TX_BANK_SIZE);
+
+    cmtBaseChOff860 = (860000000 - HOY_BASE_FREQ) / CMT2300A_ONE_STEP_SIZE / FH_OFFSET;
+
+    // xosc_aac_code[2:0] = 2
+    tmp = (~0x07) & CMT2300A_ReadReg(CMT2300A_CUS_CMT10);
+    CMT2300A_WriteReg(CMT2300A_CUS_CMT10, tmp | 0x02);
+
+    if (!cmtConfig()) {
+        Hoymiles.getMessageOutput()->println("cmtConfig() failed!");
+        return;
+    }
+
+    attachInterrupt(digitalPinToInterrupt(CMT_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
+
+    _ChipConnected = true;
+
+    Hoymiles.getMessageOutput()->println("CMT init successful");
+}
+
+void HoymilesRadio_CMT::loop()
+{
+    enumCMTresult mCMTstate = cmtProcess();
+
+    if (mCMTstate != CMT_RX_DONE) { // Perform package parsing only if no packages are received
+        if (!_rxBuffer.empty()) {
+            fragment_t f = _rxBuffer.back();
+            if (checkFragmentCrc(&f)) {
+                std::shared_ptr<InverterAbstract> inv = Hoymiles.getInverterByFragment(&f);
+
+                if (nullptr != inv) {
+                    // Save packet in inverter rx buffer
+                    Hoymiles.getMessageOutput()->print("RX ");
+                    Hoymiles.getMessageOutput()->print(cmtChToFreq(f.channel));
+                    Hoymiles.getMessageOutput()->print(" --> ");
+                    dumpBuf("", f.fragment, f.len);
+                    Hoymiles.getMessageOutput()->print("| ");
+                    Hoymiles.getMessageOutput()->print(f.rssi);
+                    Hoymiles.getMessageOutput()->println(" dBm");
+
+                    inv->addRxFragment(f.fragment, f.len);
+                } else {
+                    Hoymiles.getMessageOutput()->println("Inverter Not found!");
+                }
+
+            } else {
+                Hoymiles.getMessageOutput()->println("Frame kaputt"); // ;-)
+            }
+
+            // Remove paket from buffer even it was corrupted
+            _rxBuffer.pop();
+        }
+    }
+
+    if (_busyFlag && _rxTimeout.occured()) {
+        Hoymiles.getMessageOutput()->println("RX Period End");
+        std::shared_ptr<InverterAbstract> inv = Hoymiles.getInverterBySerial(_commandQueue.front().get()->getTargetAddress());
+
+        if (nullptr != inv) {
+            CommandAbstract* cmd = _commandQueue.front().get();
+            uint8_t verifyResult = inv->verifyAllFragments(cmd);
+            if (verifyResult == FRAGMENT_ALL_MISSING_RESEND) {
+                Hoymiles.getMessageOutput()->println("Nothing received");
+                // sendLastPacketAgain();
+                _commandQueue.pop();
+                _busyFlag = false;
+
+            } else if (verifyResult == FRAGMENT_ALL_MISSING_TIMEOUT) {
+                Hoymiles.getMessageOutput()->println("Nothing received, resend count exeeded");
+                _commandQueue.pop();
+                _busyFlag = false;
+
+            } else if (verifyResult == FRAGMENT_RETRANSMIT_TIMEOUT) {
+                Hoymiles.getMessageOutput()->println("Retransmit timeout");
+                _commandQueue.pop();
+                _busyFlag = false;
+
+            } else if (verifyResult == FRAGMENT_HANDLE_ERROR) {
+                Hoymiles.getMessageOutput()->println("Packet handling error");
+                _commandQueue.pop();
+                _busyFlag = false;
+
+            } else if (verifyResult > 0) {
+                // Perform Retransmit
+                Hoymiles.getMessageOutput()->print("Request retransmit: ");
+                Hoymiles.getMessageOutput()->println(verifyResult);
+                sendRetransmitPacket(verifyResult);
+
+            } else {
+                // Successful received all packages
+                Hoymiles.getMessageOutput()->println("Success");
+                _commandQueue.pop();
+                _busyFlag = false;
+            }
+        } else {
+            // If inverter was not found, assume the command is invalid
+            Hoymiles.getMessageOutput()->println("RX: Invalid inverter found");
+            _commandQueue.pop();
+            _busyFlag = false;
+        }
+    } else if (!_busyFlag) {
+        // Currently in idle mode --> send packet if one is in the queue
+        if (!_commandQueue.empty()) {
+            CommandAbstract* cmd = _commandQueue.front().get();
+
+            auto inv = Hoymiles.getInverterBySerial(cmd->getTargetAddress());
+            if (nullptr != inv) {
+                inv->clearRxFragmentBuffer();
+                sendEsbPacket(cmd);
+            } else {
+                Hoymiles.getMessageOutput()->println("TX: Invalid inverter found");
+                _commandQueue.pop();
+            }
+        }
+    }
+}
+
+bool HoymilesRadio_CMT::isIdle()
+{
+    return !_busyFlag;
+}
+
+bool HoymilesRadio_CMT::isConnected()
+{
+    return _ChipConnected;
+}
+
+void ARDUINO_ISR_ATTR HoymilesRadio_CMT::handleIntr()
+{
+    _packetReceived = true;
+}
+
+void HoymilesRadio_CMT::sendEsbPacket(CommandAbstract* cmd)
+{
+    cmd->incrementSendCount();
+
+    cmd->setRouterAddress(DtuSerial().u64);
+
+    Hoymiles.getMessageOutput()->print("TX ");
+    Hoymiles.getMessageOutput()->print(cmd->getCommandName());
+    Hoymiles.getMessageOutput()->print(" ");
+    Hoymiles.getMessageOutput()->print(cmtChToFreq(cmtActualCh));
+    Hoymiles.getMessageOutput()->print(" --> ");
+    cmd->dumpDataPayload(Hoymiles.getMessageOutput());
+
+    memcpy(cmtTxBuffer, cmd->getDataPayload(), cmd->getDataSize());
+    cmtTxLength = cmd->getDataSize();
+    cmtTxTimeout = 100;
+
+    cmtNextState = CMT_STATE_TX_START;
+
+    _busyFlag = true;
+    _rxTimeout.set(cmd->getTimeout());
+}

lib/Hoymiles/src/HoymilesRadio_CMT.h

@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#pragma once
+
+#include "HoymilesRadio.h"
+#include "TimeoutHelper.h"
+#include "commands/CommandAbstract.h"
+#include "types.h"
+#include <Arduino.h>
+#include <memory>
+#include <queue>
+
+// number of fragments hold in buffer
+#define FRAGMENT_BUFFER_SIZE 30
+
+/* CMT states */
+typedef enum {
+    CMT_STATE_IDLE = 0,
+    CMT_STATE_RX_START,
+    CMT_STATE_RX_WAIT,
+    CMT_STATE_RX_DONE,
+    CMT_STATE_RX_TIMEOUT,
+    CMT_STATE_TX_START,
+    CMT_STATE_TX_WAIT,
+    CMT_STATE_TX_DONE,
+    CMT_STATE_TX_TIMEOUT,
+    CMT_STATE_ERROR,
+} enumCMTstate;
+
+/* CMT process function results */
+typedef enum {
+    CMT_IDLE = 0,
+    CMT_BUSY,
+    CMT_RX_DONE,
+    CMT_RX_TIMEOUT,
+    CMT_TX_DONE,
+    CMT_TX_TIMEOUT,
+    CMT_ERROR,
+} enumCMTresult;
+
+class HoymilesRadio_CMT : public HoymilesRadio {
+public:
+    void init();
+    void loop();
+
+    bool isIdle();
+    bool isConnected();
+
+private:
+    void ARDUINO_ISR_ATTR handleIntr();
+
+    void sendEsbPacket(CommandAbstract* cmd);
+
+    volatile bool _packetReceived = false;
+
+    std::queue<fragment_t> _rxBuffer;
+    TimeoutHelper _rxTimeout;
+
+    bool _busyFlag = false;
+
+    bool _ChipConnected = false;
+
+    String cmtChToFreq(const uint8_t channel);
+    void cmtSwitchChannel(const uint8_t channel);
+    uint8_t cmtFreqToChan(const String func_name, const String var_name, const uint32_t freq_kHz);
+    bool cmtSwitchDtuFreq(const uint32_t to_freq_kHz);
+    bool cmtConfig(void);
+    bool cmtSwitchInvAndDtuFreq(const uint64_t inv_serial, const uint32_t from_freq_kHz, const uint32_t to_freq_kHz);
+    enumCMTresult cmtProcess(void);
+
+    enumCMTstate cmtNextState = CMT_STATE_IDLE;
+    uint8_t cmtTxBuffer[32];
+    uint8_t cmtTxLength = 0;
+
+    uint32_t cmtRxTimeout = 200;
+    uint32_t cmtTxTimeout = 200;
+    uint32_t cmtRxTimeCount = 0;
+    uint32_t cmtTxTimeCount = 0;
+
+    uint8_t cmtBaseChOff860; // offset from initalized CMT base frequency to Hoy base frequency in channels
+    uint8_t cmtActualCh; // actual used channel, should be stored per inverter und set before next Tx, if hopping is used
+
+    uint8_t cmtTx56toCh = 0xFF; // send CMD56 active to Channel xx, inactive = 0xFF
+
+    uint8_t cmtRxTimeoutCnt = 0; // Rx timeout counter !!! should be stored per inverter !!!
+};

lib/Hoymiles/src/types.h

@@ -16,5 +16,6 @@ typedef struct {
     uint8_t fragment[MAX_RF_PAYLOAD_SIZE];
     uint8_t len;
     uint8_t channel;
+    int8_t rssi;
     bool wasReceived;
 } fragment_t;

platformio.ini

@@ -61,6 +61,7 @@ build_flags = ${env.build_flags}
     -DCMT_PIN_CS=5
     -DCMT_PIN_FCS=4
     -DCMT_PIN_GPIO3=15
+    -DCMT_WORK_FREQ=865000
 
 
 [env:olimex_esp32_poe]