Add Select for modbus (#3032)

Co-authored-by: Oxan van Leeuwen <oxan@oxanvanleeuwen.nl>

CODEOWNERS

@@ -115,6 +115,7 @@ esphome/components/modbus_controller/* @martgras
 esphome/components/modbus_controller/binary_sensor/* @martgras
 esphome/components/modbus_controller/number/* @martgras
 esphome/components/modbus_controller/output/* @martgras
+esphome/components/modbus_controller/select/* @martgras @stegm
 esphome/components/modbus_controller/sensor/* @martgras
 esphome/components/modbus_controller/switch/* @martgras
 esphome/components/modbus_controller/text_sensor/* @martgras

esphome/codegen.py

@@ -63,6 +63,7 @@ from esphome.cpp_types import (  # noqa
     uint32,
     uint64,
     int32,
+    int64,
     const_char_ptr,
     NAN,
     esphome_ns,

esphome/components/modbus_controller/modbus_controller.cpp

@@ -110,7 +110,8 @@ void ModbusController::queue_command(const ModbusCommandItem &command) {
   for (auto &item : command_queue_) {
     if (item->register_address == command.register_address && item->register_count == command.register_count &&
         item->register_type == command.register_type && item->function_code == command.function_code) {
-      ESP_LOGW(TAG, "Duplicate modbus command found");
+      ESP_LOGW(TAG, "Duplicate modbus command found: type=0x%x address=%u count=%u",
+               static_cast<uint8_t>(command.register_type), command.register_address, command.register_count);
       // update the payload of the queued command
       // replaces a previous command
       item->payload = command.payload;
@@ -360,8 +361,9 @@ ModbusCommandItem ModbusCommandItem::create_write_multiple_command(ModbusControl
     modbusdevice->on_write_register_response(cmd.register_type, start_address, data);
   };
   for (auto v : values) {
-    cmd.payload.push_back((v / 256) & 0xFF);
+    auto decoded_value = decode_value(v);
-    cmd.payload.push_back(v & 0xFF);
+    cmd.payload.push_back(decoded_value[0]);
+    cmd.payload.push_back(decoded_value[1]);
   }
   return cmd;
 }
@@ -416,7 +418,7 @@ ModbusCommandItem ModbusCommandItem::create_write_multiple_coils(ModbusControlle
 }
 
 ModbusCommandItem ModbusCommandItem::create_write_single_command(ModbusController *modbusdevice, uint16_t start_address,
-                                                                 int16_t value) {
+                                                                 uint16_t value) {
   ModbusCommandItem cmd;
   cmd.modbusdevice = modbusdevice;
   cmd.register_type = ModbusRegisterType::HOLDING;
@@ -427,8 +429,10 @@ ModbusCommandItem ModbusCommandItem::create_write_single_command(ModbusControlle
                                          const std::vector<uint8_t> &data) {
     modbusdevice->on_write_register_response(cmd.register_type, start_address, data);
   };
-  cmd.payload.push_back((value / 256) & 0xFF);
+
-  cmd.payload.push_back((value % 256) & 0xFF);
+  auto decoded_value = decode_value(value);
+  cmd.payload.push_back(decoded_value[0]);
+  cmd.payload.push_back(decoded_value[1]);
   return cmd;
 }
 
@@ -463,84 +467,70 @@ bool ModbusCommandItem::send() {
   return true;
 }
 
-std::vector<uint16_t> float_to_payload(float value, SensorValueType value_type) {
+void number_to_payload(std::vector<uint16_t> &data, int64_t value, SensorValueType value_type) {
-  union {
-    float float_value;
-    uint32_t raw;
-  } raw_to_float;
-
-  std::vector<uint16_t> data;
-  int32_t val;
-
   switch (value_type) {
     case SensorValueType::U_WORD:
     case SensorValueType::S_WORD:
-      // cast truncates the float do some rounding here
+      data.push_back(value & 0xFFFF);
-      data.push_back(lroundf(value) & 0xFFFF);
       break;
     case SensorValueType::U_DWORD:
     case SensorValueType::S_DWORD:
-      val = lroundf(value);
+    case SensorValueType::FP32:
-      data.push_back((val & 0xFFFF0000) >> 16);
+    case SensorValueType::FP32_R:
-      data.push_back(val & 0xFFFF);
+      data.push_back((value & 0xFFFF0000) >> 16);
+      data.push_back(value & 0xFFFF);
       break;
     case SensorValueType::U_DWORD_R:
     case SensorValueType::S_DWORD_R:
-      val = lroundf(value);
+      data.push_back(value & 0xFFFF);
-      data.push_back(val & 0xFFFF);
+      data.push_back((value & 0xFFFF0000) >> 16);
-      data.push_back((val & 0xFFFF0000) >> 16);
       break;
-    case SensorValueType::FP32:
+    case SensorValueType::U_QWORD:
-      raw_to_float.float_value = value;
+    case SensorValueType::S_QWORD:
-      data.push_back((raw_to_float.raw & 0xFFFF0000) >> 16);
+      data.push_back((value & 0xFFFF000000000000) >> 48);
-      data.push_back(raw_to_float.raw & 0xFFFF);
+      data.push_back((value & 0xFFFF00000000) >> 32);
+      data.push_back((value & 0xFFFF0000) >> 16);
+      data.push_back(value & 0xFFFF);
       break;
-    case SensorValueType::FP32_R:
+    case SensorValueType::U_QWORD_R:
-      raw_to_float.float_value = value;
+    case SensorValueType::S_QWORD_R:
-      data.push_back(raw_to_float.raw & 0xFFFF);
+      data.push_back(value & 0xFFFF);
-      data.push_back((raw_to_float.raw & 0xFFFF0000) >> 16);
+      data.push_back((value & 0xFFFF0000) >> 16);
+      data.push_back((value & 0xFFFF00000000) >> 32);
+      data.push_back((value & 0xFFFF000000000000) >> 48);
       break;
     default:
-      ESP_LOGE(TAG, "Invalid data type for modbus float to payload conversation");
+      ESP_LOGE(TAG, "Invalid data type for modbus number to payload conversation: %d",
+               static_cast<uint16_t>(value_type));
       break;
   }
-  return data;
 }
 
-float payload_to_float(const std::vector<uint8_t> &data, SensorValueType sensor_value_type, uint8_t offset,
+int64_t payload_to_number(const std::vector<uint8_t> &data, SensorValueType sensor_value_type, uint8_t offset,
-                       uint32_t bitmask) {
+                          uint32_t bitmask) {
-  union {
-    float float_value;
-    uint32_t raw;
-  } raw_to_float;
-
   int64_t value = 0;  // int64_t because it can hold signed and unsigned 32 bits
-  float result = NAN;
 
   switch (sensor_value_type) {
     case SensorValueType::U_WORD:
       value = mask_and_shift_by_rightbit(get_data<uint16_t>(data, offset), bitmask);  // default is 0xFFFF ;
-      result = static_cast<float>(value);
       break;
     case SensorValueType::U_DWORD:
+    case SensorValueType::FP32:
       value = get_data<uint32_t>(data, offset);
       value = mask_and_shift_by_rightbit((uint32_t) value, bitmask);
-      result = static_cast<float>(value);
       break;
     case SensorValueType::U_DWORD_R:
+    case SensorValueType::FP32_R:
       value = get_data<uint32_t>(data, offset);
       value = static_cast<uint32_t>(value & 0xFFFF) << 16 | (value & 0xFFFF0000) >> 16;
       value = mask_and_shift_by_rightbit((uint32_t) value, bitmask);
-      result = static_cast<float>(value);
       break;
     case SensorValueType::S_WORD:
       value = mask_and_shift_by_rightbit(get_data<int16_t>(data, offset),
                                          bitmask);  // default is 0xFFFF ;
-      result = static_cast<float>(value);
       break;
     case SensorValueType::S_DWORD:
       value = mask_and_shift_by_rightbit(get_data<int32_t>(data, offset), bitmask);
-      result = static_cast<float>(value);
       break;
     case SensorValueType::S_DWORD_R: {
       value = get_data<uint32_t>(data, offset);
@@ -549,18 +539,14 @@ float payload_to_float(const std::vector<uint8_t> &data, SensorValueType sensor_
       uint32_t sign_bit = (value & 0x8000) << 16;
       value = mask_and_shift_by_rightbit(
           static_cast<int32_t>(((value & 0x7FFF) << 16 | (value & 0xFFFF0000) >> 16) | sign_bit), bitmask);
-      result = static_cast<float>(value);
     } break;
     case SensorValueType::U_QWORD:
       // Ignore bitmask for U_QWORD
       value = get_data<uint64_t>(data, offset);
-      result = static_cast<float>(value);
       break;
-
     case SensorValueType::S_QWORD:
       // Ignore bitmask for S_QWORD
       value = get_data<int64_t>(data, offset);
-      result = static_cast<float>(value);
       break;
     case SensorValueType::U_QWORD_R:
       // Ignore bitmask for U_QWORD
@@ -568,32 +554,16 @@ float payload_to_float(const std::vector<uint8_t> &data, SensorValueType sensor_
       value = static_cast<uint64_t>(value & 0xFFFF) << 48 | (value & 0xFFFF000000000000) >> 48 |
               static_cast<uint64_t>(value & 0xFFFF0000) << 32 | (value & 0x0000FFFF00000000) >> 32 |
               static_cast<uint64_t>(value & 0xFFFF00000000) << 16 | (value & 0x00000000FFFF0000) >> 16;
-      result = static_cast<float>(value);
       break;
-
     case SensorValueType::S_QWORD_R:
       // Ignore bitmask for S_QWORD
       value = get_data<int64_t>(data, offset);
-      result = static_cast<float>(value);
       break;
-    case SensorValueType::FP32:
-      raw_to_float.raw = get_data<uint32_t>(data, offset);
-      ESP_LOGD(TAG, "FP32 = 0x%08X => %f", raw_to_float.raw, raw_to_float.float_value);
-      result = raw_to_float.float_value;
-      break;
-    case SensorValueType::FP32_R: {
-      auto tmp = get_data<uint32_t>(data, offset);
-      raw_to_float.raw = static_cast<uint32_t>(tmp & 0xFFFF) << 16 | (tmp & 0xFFFF0000) >> 16;
-      ESP_LOGD(TAG, "FP32_R = 0x%08X => %f", raw_to_float.raw, raw_to_float.float_value);
-      result = raw_to_float.float_value;
-    } break;
     case SensorValueType::RAW:
-      result = NAN;
-      break;
     default:
       break;
   }
-  return result;
+  return value;
 }
 
 }  // namespace modbus_controller

esphome/components/modbus_controller/modbus_controller.h

@@ -195,7 +195,7 @@ inline bool coil_from_vector(int coil, const std::vector<uint8_t> &data) {
  */
 template<typename N> N mask_and_shift_by_rightbit(N data, uint32_t mask) {
   auto result = (mask & data);
-  if (result == 0) {
+  if (result == 0 || mask == 0xFFFFFFFF) {
     return result;
   }
   for (size_t pos = 0; pos < sizeof(N) << 3; pos++) {
@@ -205,22 +205,23 @@ template<typename N> N mask_and_shift_by_rightbit(N data, uint32_t mask) {
   return 0;
 }
 
-/** convert float value to vector<uint16_t> suitable for sending
+/** Convert float value to vector<uint16_t> suitable for sending
- * @param value float value to cconvert
+ * @param data target for payload
+ * @param value float value to convert
  * @param value_type defines if 16/32 or FP32 is used
  * @return vector containing the modbus register words in correct order
  */
-std::vector<uint16_t> float_to_payload(float value, SensorValueType value_type);
+void number_to_payload(std::vector<uint16_t> &data, int64_t value, SensorValueType value_type);
 
-/** convert vector<uint8_t> response payload to float
+/** Convert vector<uint8_t> response payload to number.
- * @param value float value to cconvert
+ * @param data payload with the data to convert
  * @param sensor_value_type defines if 16/32/64 bits or FP32 is used
  * @param offset offset to the data in data
  * @param bitmask bitmask used for masking and shifting
- * @return float version of the input
+ * @return 64-bit number of the payload
  */
-float payload_to_float(const std::vector<uint8_t> &data, SensorValueType sensor_value_type, uint8_t offset,
+int64_t payload_to_number(const std::vector<uint8_t> &data, SensorValueType sensor_value_type, uint8_t offset,
-                       uint32_t bitmask);
+                          uint32_t bitmask);
 
 class ModbusController;
 
@@ -348,11 +349,11 @@ class ModbusCommandItem {
    * @param modbusdevice pointer to the device to execute the command
    * @param start_address modbus address of the first register to read
    * @param register_count number of registers to read
-   * @param values uint16_t array to be written to the registers
+   * @param value uint16_t single register value to write
    * @return ModbusCommandItem with the prepared command
    */
   static ModbusCommandItem create_write_single_command(ModbusController *modbusdevice, uint16_t start_address,
-                                                       int16_t value);
+                                                       uint16_t value);
   /** Create modbus write single registers command
    *  Function 05 (05hex) Write Single Coil
    * @param modbusdevice pointer to the device to execute the command
@@ -446,13 +447,36 @@ class ModbusController : public PollingComponent, public modbus::ModbusDevice {
   uint16_t command_throttle_;
 };
 
-/** convert vector<uint8_t> response payload to float
+/** Convert vector<uint8_t> response payload to float.
- * @param value float value to cconvert
+ * @param data payload with data
  * @param item SensorItem object
- * @return float version of the input
+ * @return float value of data
  */
 inline float payload_to_float(const std::vector<uint8_t> &data, const SensorItem &item) {
-  return payload_to_float(data, item.sensor_value_type, item.offset, item.bitmask);
+  int64_t number = payload_to_number(data, item.sensor_value_type, item.offset, item.bitmask);
+
+  float float_value;
+  if (item.sensor_value_type == SensorValueType::FP32 || item.sensor_value_type == SensorValueType::FP32_R) {
+    float_value = bit_cast<float>(static_cast<uint32_t>(number));
+  } else {
+    float_value = static_cast<float>(number);
+  }
+
+  return float_value;
+}
+
+inline std::vector<uint16_t> float_to_payload(float value, SensorValueType value_type) {
+  int64_t val;
+
+  if (value_type == SensorValueType::FP32 || value_type == SensorValueType::FP32_R) {
+    val = bit_cast<uint32_t>(value);
+  } else {
+    val = llroundf(value);
+  }
+
+  std::vector<uint16_t> data;
+  number_to_payload(data, val, value_type);
+  return data;
 }
 
 }  // namespace modbus_controller

esphome/components/modbus_controller/select/__init__.py

@@ -0,0 +1,142 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import select
+from esphome.const import CONF_ADDRESS, CONF_ID, CONF_LAMBDA
+from esphome.jsonschema import jschema_composite
+
+from .. import (
+    SENSOR_VALUE_TYPE,
+    TYPE_REGISTER_MAP,
+    ModbusController,
+    SensorItem,
+    modbus_controller_ns,
+)
+from ..const import (
+    CONF_FORCE_NEW_RANGE,
+    CONF_MODBUS_CONTROLLER_ID,
+    CONF_REGISTER_COUNT,
+    CONF_SKIP_UPDATES,
+    CONF_USE_WRITE_MULTIPLE,
+    CONF_VALUE_TYPE,
+    CONF_WRITE_LAMBDA,
+)
+
+DEPENDENCIES = ["modbus_controller"]
+CODEOWNERS = ["@martgras", "@stegm"]
+CONF_OPTIONSMAP = "optionsmap"
+
+ModbusSelect = modbus_controller_ns.class_(
+    "ModbusSelect", cg.Component, select.Select, SensorItem
+)
+
+
+@jschema_composite
+def ensure_option_map():
+    def validator(value):
+        cv.check_not_templatable(value)
+        option = cv.All(cv.string_strict)
+        mapping = cv.All(cv.int_range(-(2 ** 63), 2 ** 63 - 1))
+        options_map_schema = cv.Schema({option: mapping})
+        value = options_map_schema(value)
+
+        all_values = list(value.values())
+        unique_values = set(value.values())
+        if len(all_values) != len(unique_values):
+            raise cv.Invalid("Mapping values must be unique.")
+
+        return value
+
+    return validator
+
+
+def register_count_value_type_min(value):
+    reg_count = value.get(CONF_REGISTER_COUNT)
+    if reg_count is not None:
+        value_type = value[CONF_VALUE_TYPE]
+        min_register_count = TYPE_REGISTER_MAP[value_type]
+        if min_register_count > reg_count:
+            raise cv.Invalid(
+                f"Value type {value_type} needs at least {min_register_count} registers"
+            )
+    return value
+
+
+INTEGER_SENSOR_VALUE_TYPE = {
+    key: value for key, value in SENSOR_VALUE_TYPE.items() if not key.startswith("FP")
+}
+
+CONFIG_SCHEMA = cv.All(
+    select.SELECT_SCHEMA.extend(cv.COMPONENT_SCHEMA).extend(
+        {
+            cv.GenerateID(): cv.declare_id(ModbusSelect),
+            cv.GenerateID(CONF_MODBUS_CONTROLLER_ID): cv.use_id(ModbusController),
+            cv.Required(CONF_ADDRESS): cv.positive_int,
+            cv.Optional(CONF_VALUE_TYPE, default="U_WORD"): cv.enum(
+                INTEGER_SENSOR_VALUE_TYPE
+            ),
+            cv.Optional(CONF_REGISTER_COUNT): cv.positive_int,
+            cv.Optional(CONF_SKIP_UPDATES, default=0): cv.positive_int,
+            cv.Optional(CONF_FORCE_NEW_RANGE, default=False): cv.boolean,
+            cv.Required(CONF_OPTIONSMAP): ensure_option_map(),
+            cv.Optional(CONF_USE_WRITE_MULTIPLE, default=False): cv.boolean,
+            cv.Optional(CONF_LAMBDA): cv.returning_lambda,
+            cv.Optional(CONF_WRITE_LAMBDA): cv.returning_lambda,
+        },
+    ),
+    register_count_value_type_min,
+)
+
+
+async def to_code(config):
+    value_type = config[CONF_VALUE_TYPE]
+    reg_count = config.get(CONF_REGISTER_COUNT)
+    if reg_count is None:
+        reg_count = TYPE_REGISTER_MAP[value_type]
+
+    options_map = config[CONF_OPTIONSMAP]
+
+    var = cg.new_Pvariable(
+        config[CONF_ID],
+        value_type,
+        config[CONF_ADDRESS],
+        reg_count,
+        config[CONF_SKIP_UPDATES],
+        config[CONF_FORCE_NEW_RANGE],
+        list(options_map.values()),
+    )
+
+    await cg.register_component(var, config)
+    await select.register_select(var, config, options=list(options_map.keys()))
+
+    parent = await cg.get_variable(config[CONF_MODBUS_CONTROLLER_ID])
+    cg.add(parent.add_sensor_item(var))
+    cg.add(var.set_parent(parent))
+    cg.add(var.set_use_write_mutiple(config[CONF_USE_WRITE_MULTIPLE]))
+
+    if CONF_LAMBDA in config:
+        template_ = await cg.process_lambda(
+            config[CONF_LAMBDA],
+            [
+                (ModbusSelect.operator("const_ptr"), "item"),
+                (cg.int64, "x"),
+                (
+                    cg.std_vector.template(cg.uint8).operator("const").operator("ref"),
+                    "data",
+                ),
+            ],
+            return_type=cg.optional.template(cg.std_string),
+        )
+        cg.add(var.set_template(template_))
+
+    if CONF_WRITE_LAMBDA in config:
+        template_ = await cg.process_lambda(
+            config[CONF_WRITE_LAMBDA],
+            [
+                (ModbusSelect.operator("const_ptr"), "item"),
+                (cg.std_string.operator("const").operator("ref"), "x"),
+                (cg.int64, "value"),
+                (cg.std_vector.template(cg.uint16).operator("ref"), "payload"),
+            ],
+            return_type=cg.optional.template(cg.int64),
+        )
+        cg.add(var.set_write_template(template_))

esphome/components/modbus_controller/select/modbus_select.cpp

@@ -0,0 +1,86 @@
+#include "modbus_select.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace modbus_controller {
+
+static const char *const TAG = "modbus_controller.select";
+
+void ModbusSelect::dump_config() { LOG_SELECT(TAG, "Modbus Controller Select", this); }
+
+void ModbusSelect::parse_and_publish(const std::vector<uint8_t> &data) {
+  int64_t value = payload_to_number(data, this->sensor_value_type, this->offset, this->bitmask);
+
+  ESP_LOGD(TAG, "New select value %lld from payload", value);
+
+  optional<std::string> new_state;
+
+  if (this->transform_func_.has_value()) {
+    auto val = (*this->transform_func_)(this, value, data);
+    if (val.has_value()) {
+      new_state = *val;
+      ESP_LOGV(TAG, "lambda returned option %s", new_state->c_str());
+    }
+  }
+
+  if (!new_state.has_value()) {
+    auto map_it = std::find(this->mapping_.cbegin(), this->mapping_.cend(), value);
+
+    if (map_it != this->mapping_.cend()) {
+      size_t idx = std::distance(this->mapping_.cbegin(), map_it);
+      new_state = this->traits.get_options()[idx];
+      ESP_LOGV(TAG, "Found option %s for value %lld", new_state->c_str(), value);
+    } else {
+      ESP_LOGE(TAG, "No option found for mapping %lld", value);
+    }
+  }
+
+  if (new_state.has_value()) {
+    this->publish_state(new_state.value());
+  }
+}
+
+void ModbusSelect::control(const std::string &value) {
+  auto options = this->traits.get_options();
+  auto opt_it = std::find(options.cbegin(), options.cend(), value);
+  size_t idx = std::distance(options.cbegin(), opt_it);
+  optional<int64_t> mapval = this->mapping_[idx];
+  ESP_LOGD(TAG, "Found value %lld for option '%s'", *mapval, value.c_str());
+
+  std::vector<uint16_t> data;
+
+  if (this->write_transform_func_.has_value()) {
+    auto val = (*this->write_transform_func_)(this, value, *mapval, data);
+    if (val.has_value()) {
+      mapval = *val;
+      ESP_LOGV(TAG, "write_lambda returned mapping value %lld", *mapval);
+    } else {
+      ESP_LOGD(TAG, "Communication handled by write_lambda - exiting control");
+      return;
+    }
+  }
+
+  if (data.empty()) {
+    number_to_payload(data, *mapval, this->sensor_value_type);
+  } else {
+    ESP_LOGV(TAG, "Using payload from write lambda");
+  }
+
+  if (data.empty()) {
+    ESP_LOGW(TAG, "No payload was created for updating select");
+    return;
+  }
+
+  const uint16_t write_address = this->start_address + this->offset / 2;
+  ModbusCommandItem write_cmd;
+  if ((this->register_count == 1) && (!this->use_write_multiple_)) {
+    write_cmd = ModbusCommandItem::create_write_single_command(parent_, write_address, data[0]);
+  } else {
+    write_cmd = ModbusCommandItem::create_write_multiple_command(parent_, write_address, this->register_count, data);
+  }
+
+  parent_->queue_command(write_cmd);
+}
+
+}  // namespace modbus_controller
+}  // namespace esphome

esphome/components/modbus_controller/select/modbus_select.h

@@ -0,0 +1,51 @@
+#pragma once
+
+#include <utility>
+
+#include "esphome/components/modbus_controller/modbus_controller.h"
+#include "esphome/components/select/select.h"
+#include "esphome/core/component.h"
+
+namespace esphome {
+namespace modbus_controller {
+
+class ModbusSelect : public Component, public select::Select, public SensorItem {
+ public:
+  ModbusSelect(SensorValueType sensor_value_type, uint16_t start_address, uint8_t register_count, uint8_t skip_updates,
+               bool force_new_range, std::vector<int64_t> mapping) {
+    this->register_type = ModbusRegisterType::HOLDING;  // not configurable
+    this->sensor_value_type = sensor_value_type;
+    this->start_address = start_address;
+    this->offset = 0;            // not configurable
+    this->bitmask = 0xFFFFFFFF;  // not configurable
+    this->register_count = register_count;
+    this->response_bytes = 0;  // not configurable
+    this->skip_updates = skip_updates;
+    this->force_new_range = force_new_range;
+    this->mapping_ = std::move(mapping);
+  }
+
+  using transform_func_t =
+      std::function<optional<std::string>(ModbusSelect *const, int64_t, const std::vector<uint8_t> &)>;
+  using write_transform_func_t =
+      std::function<optional<int64_t>(ModbusSelect *const, const std::string &, int64_t, std::vector<uint16_t> &)>;
+
+  void set_parent(ModbusController *const parent) { this->parent_ = parent; }
+  void set_use_write_mutiple(bool use_write_multiple) { this->use_write_multiple_ = use_write_multiple; }
+  void set_template(transform_func_t &&f) { this->transform_func_ = f; }
+  void set_write_template(write_transform_func_t &&f) { this->write_transform_func_ = f; }
+
+  void dump_config() override;
+  void parse_and_publish(const std::vector<uint8_t> &data) override;
+  void control(const std::string &value) override;
+
+ protected:
+  std::vector<int64_t> mapping_;
+  ModbusController *parent_;
+  bool use_write_multiple_{false};
+  optional<transform_func_t> transform_func_;
+  optional<write_transform_func_t> write_transform_func_;
+};
+
+}  // namespace modbus_controller
+}  // namespace esphome

esphome/cpp_generator.py

@@ -773,9 +773,11 @@ class MockObj(Expression):
             return MockObj(f"{self.base} &", "")
         if name == "ptr":
             return MockObj(f"{self.base} *", "")
+        if name == "const_ptr":
+            return MockObj(f"{self.base} *const", "")
         if name == "const":
             return MockObj(f"const {self.base}", "")
-        raise ValueError("Expected one of ref, ptr, const.")
+        raise ValueError("Expected one of ref, ptr, const_ptr, const.")
 
     @property
     def using(self) -> "MockObj":

esphome/cpp_types.py

@@ -15,6 +15,7 @@ uint16 = global_ns.namespace("uint16_t")
 uint32 = global_ns.namespace("uint32_t")
 uint64 = global_ns.namespace("uint64_t")
 int32 = global_ns.namespace("int32_t")
+int64 = global_ns.namespace("int64_t")
 const_char_ptr = global_ns.namespace("const char *")
 NAN = global_ns.namespace("NAN")
 esphome_ns = global_ns  # using namespace esphome;