Dsmr component (#1881)

Co-authored-by: Otto winter <otto@otto-winter.com>

esphome/components/dsmr/dsmr.h

@@ -0,0 +1,104 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/sensor/sensor.h"
+#include "esphome/components/text_sensor/text_sensor.h"
+#include "esphome/components/uart/uart.h"
+#include "esphome/core/log.h"
+#include "esphome/core/defines.h"
+
+// don't include <dsmr.h> because it puts everything in global namespace
+#include <dsmr/parser.h>
+#include <dsmr/fields.h>
+
+namespace esphome {
+namespace dsmr {
+
+static constexpr uint32_t MAX_TELEGRAM_LENGTH = 1500;
+static constexpr uint32_t POLL_TIMEOUT = 1000;
+
+using namespace ::dsmr::fields;
+
+// DSMR_**_LIST generated by ESPHome and written in esphome/core/defines
+
+#if !defined(DSMR_SENSOR_LIST) && !defined(DSMR_TEXT_SENSOR_LIST)
+// Neither set, set it to a dummy value to not break build
+#define DSMR_TEXT_SENSOR_LIST(F, SEP) F(identification)
+#endif
+
+#if defined(DSMR_SENSOR_LIST) && defined(DSMR_TEXT_SENSOR_LIST)
+#define DSMR_BOTH ,
+#else
+#define DSMR_BOTH
+#endif
+
+#ifndef DSMR_SENSOR_LIST
+#define DSMR_SENSOR_LIST(F, SEP)
+#endif
+
+#ifndef DSMR_TEXT_SENSOR_LIST
+#define DSMR_TEXT_SENSOR_LIST(F, SEP)
+#endif
+
+#define DSMR_DATA_SENSOR(s) s
+#define DSMR_COMMA ,
+
+using MyData = ::dsmr::ParsedData<DSMR_TEXT_SENSOR_LIST(DSMR_DATA_SENSOR, DSMR_COMMA)
+                                      DSMR_BOTH DSMR_SENSOR_LIST(DSMR_DATA_SENSOR, DSMR_COMMA)>;
+
+class Dsmr : public Component, public uart::UARTDevice {
+ public:
+  Dsmr(uart::UARTComponent *uart) : uart::UARTDevice(uart) {}
+
+  void loop() override;
+
+  bool parse_telegram();
+
+  void publish_sensors(MyData &data) {
+#define DSMR_PUBLISH_SENSOR(s) \
+  if (data.s##_present && this->s_##s##_ != nullptr) \
+    s_##s##_->publish_state(data.s);
+    DSMR_SENSOR_LIST(DSMR_PUBLISH_SENSOR, )
+
+#define DSMR_PUBLISH_TEXT_SENSOR(s) \
+  if (data.s##_present && this->s_##s##_ != nullptr) \
+    s_##s##_->publish_state(data.s.c_str());
+    DSMR_TEXT_SENSOR_LIST(DSMR_PUBLISH_TEXT_SENSOR, )
+  };
+
+  void dump_config() override;
+
+  void set_decryption_key(const std::string &decryption_key);
+
+// Sensor setters
+#define DSMR_SET_SENSOR(s) \
+  void set_##s(sensor::Sensor *sensor) { s_##s##_ = sensor; }
+  DSMR_SENSOR_LIST(DSMR_SET_SENSOR, )
+
+#define DSMR_SET_TEXT_SENSOR(s) \
+  void set_##s(text_sensor::TextSensor *sensor) { s_##s##_ = sensor; }
+  DSMR_TEXT_SENSOR_LIST(DSMR_SET_TEXT_SENSOR, )
+
+ protected:
+  void receive_telegram_();
+  void receive_encrypted_();
+
+  // Telegram buffer
+  char telegram_[MAX_TELEGRAM_LENGTH];
+  int telegram_len_{0};
+
+  // Serial parser
+  bool header_found_{false};
+  bool footer_found_{false};
+
+// Sensor member pointers
+#define DSMR_DECLARE_SENSOR(s) sensor::Sensor *s_##s##_{nullptr};
+  DSMR_SENSOR_LIST(DSMR_DECLARE_SENSOR, )
+
+#define DSMR_DECLARE_TEXT_SENSOR(s) text_sensor::TextSensor *s_##s##_{nullptr};
+  DSMR_TEXT_SENSOR_LIST(DSMR_DECLARE_TEXT_SENSOR, )
+
+  std::vector<uint8_t> decryption_key_{};
+};
+}  // namespace dsmr
+}  // namespace esphome