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dsmr_p1_sensor.h
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dsmr_p1_sensor.h
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#include "esphome.h"
#include "dsmr.h"
using namespace esphome;
#define P1_MAXTELEGRAMLENGTH 1500
#define DELAY_MS 60000 // Delay in miliseconds before reading another telegram
#define WAIT_FOR_DATA_MS 2000
// Use data structure according to: https://github.com/matthijskooijman/arduino-dsmr
using MyData = ParsedData <
/* FixedValue */ energy_delivered_tariff1,
/* FixedValue */ energy_delivered_tariff2,
/* FixedValue */ energy_returned_tariff1,
/* FixedValue */ energy_returned_tariff2,
/* FixedValue */ power_delivered,
/* FixedValue */ power_returned,
/* FixedValue */ voltage_l1,
/* FixedValue */ voltage_l2,
/* FixedValue */ voltage_l3,
/* FixedValue */ current_l1,
/* FixedValue */ current_l2,
/* FixedValue */ current_l3,
/* FixedValue */ power_delivered_l1,
/* FixedValue */ power_delivered_l2,
/* FixedValue */ power_delivered_l3,
/* FixedValue */ power_returned_l1,
/* FixedValue */ power_returned_l2,
/* FixedValue */ power_returned_l3,
/* uint16_t */ gas_device_type,
/* uint8_t */ gas_valve_position,
/* TimestampedFixedValue */ gas_delivered
>;
class CustomP1UartComponent : public Component, public uart::UARTDevice {
protected:
char telegram[P1_MAXTELEGRAMLENGTH];
char c;
int telegramlen;
bool headerfound;
bool footerfound;
unsigned long lastread;
int bytes_read;
bool data_available() {
// See if there's data available.
unsigned long currentMillis = millis();
unsigned long previousMillis = currentMillis;
while (currentMillis - previousMillis < WAIT_FOR_DATA_MS) { // wait in miliseconds
currentMillis = millis();
if (available()) {
return true;
}
}
return false;
}
bool read_message() {
//ESP_LOGD("DmsrCustom","Read message");
headerfound = false;
footerfound = false;
telegramlen = 0;
bytes_read = 0;
unsigned long currentMillis = millis();
unsigned long previousMillis = currentMillis;
if (available()) { // Check to be sure
// Messages come in batches. Read until footer.
while (!footerfound && currentMillis - previousMillis < 5000) { // Loop while there's no footer found with a maximum of 5 seconds
currentMillis = millis();
// Loop while there's data to read
while (available()) { // Loop while there's data
if (telegramlen >= P1_MAXTELEGRAMLENGTH) { // Buffer overflow
headerfound = false;
footerfound = false;
ESP_LOGD("DmsrCustom","Error: Message larger than buffer");
}
bytes_read++;
c = read();
if (c == 47) { // header: forward slash
// ESP_LOGD("DmsrCustom","Header found");
headerfound = true;
telegramlen = 0;
}
if (headerfound) {
telegram[telegramlen] = c;
telegramlen++;
if (c == 33) { // footer: exclamation mark
ESP_LOGD("DmsrCustom","Footer found");
footerfound = true;
} else {
if (footerfound && c == 10) { // last \n after footer
// Parse message
MyData data;
// ESP_LOGD("DmsrCustom","Trying to parse");
ParseResult<void> res = P1Parser::parse(&data, telegram, telegramlen, false); // Parse telegram accoring to data definition. Ignore unknown values.
if (res.err) {
// Parsing error, show it
Serial.println(res.fullError(telegram, telegram + telegramlen));
} else {
publish_sensors(data);
return true; // break out function
}
}
}
}
} // While data available
} // !footerfound
}
return false;
}
void publish_sensors(MyData data){
if(data.energy_delivered_tariff1_present)s_energy_delivered_tariff1->publish_state(data.energy_delivered_tariff1);
if(data.energy_delivered_tariff2_present)s_energy_delivered_tariff2->publish_state(data.energy_delivered_tariff2);
if(data.energy_returned_tariff1_present)s_energy_returned_tariff1->publish_state(data.energy_returned_tariff1);
if(data.energy_returned_tariff2_present)s_energy_returned_tariff2->publish_state(data.energy_returned_tariff2);
if(data.power_delivered_present)s_power_delivered->publish_state(data.power_delivered);
if(data.power_returned_present)s_power_returned->publish_state(data.power_returned);
if(data.voltage_l1_present)s_voltage_l1->publish_state(data.voltage_l1);
if(data.voltage_l2_present)s_voltage_l2->publish_state(data.voltage_l2);
if(data.voltage_l3_present)s_voltage_l3->publish_state(data.voltage_l3);
if(data.current_l1_present)s_current_l1->publish_state(data.current_l1);
if(data.current_l2_present)s_current_l2->publish_state(data.current_l2);
if(data.current_l3_present)s_current_l3->publish_state(data.current_l3);
if(data.power_delivered_l1_present)s_power_delivered_l1->publish_state(data.power_delivered_l1);
if(data.power_delivered_l2_present)s_power_delivered_l2->publish_state(data.power_delivered_l2);
if(data.power_delivered_l3_present)s_power_delivered_l3->publish_state(data.power_delivered_l3);
if(data.power_returned_l1_present)s_power_returned_l1->publish_state(data.power_returned_l1);
if(data.power_returned_l2_present)s_power_returned_l2->publish_state(data.power_returned_l2);
if(data.power_returned_l3_present)s_power_returned_l3->publish_state(data.power_returned_l3);
if(data.gas_device_type_present)s_gas_device_type->publish_state(data.gas_device_type);
if(data.gas_valve_position_present)s_gas_valve_position->publish_state(data.gas_valve_position);
if(data.gas_delivered_present)s_gas_delivered->publish_state(data.gas_delivered);
};
public:
CustomP1UartComponent(UARTComponent *parent) : UARTDevice(parent) {}
Sensor *s_energy_delivered_tariff1 = new Sensor();
Sensor *s_energy_delivered_tariff2 = new Sensor();
Sensor *s_energy_returned_tariff1 = new Sensor();
Sensor *s_energy_returned_tariff2 = new Sensor();
Sensor *s_electricity_tariff = new Sensor();
Sensor *s_power_delivered = new Sensor();
Sensor *s_power_returned = new Sensor();
Sensor *s_electricity_threshold = new Sensor();
Sensor *s_voltage_l1 = new Sensor();
Sensor *s_voltage_l2 = new Sensor();
Sensor *s_voltage_l3 = new Sensor();
Sensor *s_current_l1 = new Sensor();
Sensor *s_current_l2 = new Sensor();
Sensor *s_current_l3 = new Sensor();
Sensor *s_power_delivered_l1 = new Sensor();
Sensor *s_power_delivered_l2 = new Sensor();
Sensor *s_power_delivered_l3 = new Sensor();
Sensor *s_power_returned_l1 = new Sensor();
Sensor *s_power_returned_l2 = new Sensor();
Sensor *s_power_returned_l3 = new Sensor();
Sensor *s_gas_device_type = new Sensor();
Sensor *s_gas_valve_position = new Sensor();
Sensor *s_gas_delivered = new Sensor();
void setup() override {
lastread = 0;
pinMode(D5, OUTPUT); // Set D5 as output pin
digitalWrite(D5,LOW); // Set low, don't request message from P1 port
}
void loop() override {
unsigned long now = millis();
if (now - lastread > DELAY_MS || lastread == 0) {
lastread = now;
digitalWrite(D5,HIGH); // Set high, request new message from P1 port
if (data_available()) { // Check for x seconds if there's data available
bool have_message = read_message();
if (have_message) {
digitalWrite(D5,LOW); // Set low, stop requesting messages from P1 port
} // If No message was read, keep output port high and retry later
} else {
ESP_LOGD("DmsrCustom","No data available. Is P1 port connected?");
}
}
}
};