I have a Tecalor THZ heat pump running and I am testing Can Bus, while ISG pins are plugged parallel to my Can Bus wires. I adapted ‘ESP32 NodeMCU Development Board’ with attached ’ MCP2515 CAN Bus Module’. My Home Assistant is running on a Raspberry Pi 4. In the directory /config/esphome I stored the file ‘esphome-web-288ccc.yaml’ with the content below. When the log file is running in ESPHome I see all the messages running between ISG and THZ.
Up to now I am not able to trigger a sensor request. THZ is not answering to my requests. May be the reason is, that I defined my Can Bus node 0x180. I guess, THZ will only answer to requests from node ID 0x6a2, what is used by ISG. So, I have to try this option also.
Content of esphome-web-288ccc.yaml:
esphome:
name: esphome-web-288ccc
friendly_name: ESPHome Web 288ccc
esp32:
board: esp32dev
framework:
type: arduino
# Enable logging
logger:
# Enable Home Assistant API
api:
encryption:
key: "yV2hpkUxilwEFPZXT8U5eD/HoyxdB3LsZJaGcwYAsZg="
ota:
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Esphome-Web-288Ccc"
password: "vWVSNEiAnHZA"
sensor:
- platform: template
id: hzg_aussentemp
name: "HZG AUSSENTEMP"
state_class: "measurement"
device_class: temperature
unit_of_measurement: "°C"
icon: "mdi:thermometer-lines"
update_interval: 30min
- platform: template
id: hzg_hk1_solltemp_tag
name: "HZG HK1 SOLLTEMP TAG"
state_class: "measurement"
device_class: temperature
unit_of_measurement: "°C"
icon: "mdi:thermometer-lines"
update_interval: 1min
- platform: template
id: hzg_ww_solltemp_tag
name: "HZG WW SOLLTEMP TAG"
state_class: "measurement"
device_class: temperature
unit_of_measurement: "°C"
icon: "mdi:thermometer-lines"
update_interval: 1min
- platform: template
id: hzg_betriebsart
name: "HZG BETRIEBSART"
state_class: "measurement"
update_interval: 10min
captive_portal:
time:
- platform: homeassistant
id: homeassistant_time
on_time:
# alle 3 Minuten (180 s) am CAN Bus nach dem Sensor-Status fragen:
- seconds: /60
then:
# Byte 0: 0x3: 1. Teil der CAN Bus ID der Heizung
# Byte 1: 0x1: 1 steht für Anfrage an den CAN Bus
# Byte 2/3: 0x00: gehört mit der 3 oben zur CAN Bus ID der Heizung
# ergibt zusammen 0x180 hex(3*8 + 00)
# Byte 4/5: 0xfa: ist immer so bei thz ????????
# Byte 6-9: 0x00,0x0c: ID Außentemp, siehe elsterTabelle.inc
# Byte 10-13: reserviert für die Antwort später (in °C *10)
#Außentemperatur 1/10 °C et dec value - ok /10
- canbus.send:
can_id: 0x680
data: [0x31,0x00,0xfa,0x00,0x0c,0x00,0x00]
- lambda: |-
ESP_LOGD("myesp", "Timer-Anfrage von 0x680 (ESP) an 0x180: [0x31,0x00,0xfa,0x00,0x0c,0x00,0x00]");
- delay: 200ms
# hier kommen die Antworten vom CAN Bus:
spi:
id: McpSpi
clk_pin: GPIO18
mosi_pin: GPIO23
miso_pin: GPIO19
canbus:
- platform: mcp2515
id: my_mcp2515
spi_id: McpSpi
cs_pin: GPIO5
can_id: 0x680
use_extended_id: false
bit_rate: 20kbps
on_frame:
# Telegramme von CAN ID 0x6a2 (ISG) in die Sensoren einarbeiten
- can_id: 0x6a2
then:
# - lambda: ist Kennung für folgenden C++ Code
# Byte 0: 0xd: Empfänger-ID des ESP32
# Byte 1: 0x2: 1 steht für Anfrage an den CAN Bus
# Byte 2/3: 0x00: gehört mit 'd' oben zur CAN Bus ID des ESP32
# ergibt zusammen 0x680 hex(d*8 + 0)
# Byte 4/5: 0xfa
# Byte 6-9: 0x00,0x0c: Sensor-ID lt. ElsterTable.inc
# Byte 10-13: Sensorwert
- lambda: |-
//int wert0 =int(x[0]);
//int wert1 =int(x[1]);
//int wert2 =int(x[2]);
//int wert3 =int(x[3]);
//int wert4 =int(x[4]);
//int wert5 =int(x[5]);
//int wert6 =int(x[6]);
//ESP_LOGD("myesp", "von 0x6a2 (ISG) Hex: %2.2x %2.2x %x %2.2x %2.2x %2.2x %2.2x", wert0, wert1, wert2, wert3, wert4, wert5, wert6);
int ziel = (int(x[0] & 0xf0) << 3) + int(x[1]);
int iart = int(x[0] & 0x0f);
int fa_kenng =int(x[2]);
int sensor_id = int( (x[3]<<8) + x[4] );
float antwort = float(int( (x[5]<<8) + x[6] ));
if( iart == 2 ) {
float sensorwert;
switch( sensor_id ){
default:
ESP_LOGD("myesp", "Antwort von 0x6a2 an 0x%x fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, fa_kenng, sensor_id, antwort);
break;
} // switch( sensor_id )
} else if(iart == 0) {
ESP_LOGD("myesp", "Schreiben von 0x6a2 an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, iart, fa_kenng, sensor_id, antwort);
} else {
ESP_LOGD("myesp", "Anfrage von 0x6a2 an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x"
, ziel, iart, fa_kenng, sensor_id );
} // if( iart == 2)
# Telegramme von CAN ID 0x180 (THZ) in die Sensoren einarbeiten
- can_id: 0x180
then:
- lambda: |-
int ziel = (int(x[0] & 0xf0) << 3) + int(x[1]);
int iart = int(x[0] & 0x0f);
int fa_kenng =int(x[2]);
int sensor_id = int( (x[3]<<8) + x[4] );
float antwort = float(int( (x[5]<<8) + x[6] ));
if( iart == 2 ) {
float sensorwert;
switch( sensor_id ) {
case 0x0003:
if( ziel == 0x680 ){
sensorwert = antwort / 10;
id(hzg_ww_solltemp_tag).publish_state(sensorwert);
ESP_LOGD("myesp", "hzg_ww_solltemp_tag (0x%4.4x): %f°C", sensor_id, sensorwert);
}
break;
case 0x000c:
if( ziel == 0x680 ){
sensorwert = antwort / 10;
id(hzg_aussentemp).publish_state(sensorwert);
ESP_LOGD("myesp", "hzg_aussentemp(0x%4.4x): %f°C", sensor_id, sensorwert);
}
break;
case 0x0012:
if( ziel == 0x680 ){
sensorwert = antwort;
id(hzg_betriebsart).publish_state(sensorwert);
ESP_LOGD("myesp", "hzg_betriebsart(0x%4.4x): %f°C", sensor_id, sensorwert);
}
break;
default:
if( ziel == 0x6a2 )
ESP_LOGD("myesp", "Antwort von 0x180 an 0x%x fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, fa_kenng, sensor_id, antwort);
break;
} // switch( sensor_id )
//} else if(iart == 0) {
// ESP_LOGD("myesp", "Schreiben von 0x180 an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
// , ziel, iart, fa_kenng, sensor_id, antwort);
//} else {
// ESP_LOGD("myesp", "Anfrage von 0x180 an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
// , ziel, iart, fa_kenng, sensor_id, antwort);
} // if( iart == 2)
# Telegramme von CAN ID 0x680 (ESP32)
- can_id: 0x680
then:
- lambda: |-
int ziel = (int(x[0] & 0xf0) << 3) + int(x[1]);
int iart = int(x[0] & 0x0f);
int fa_kenng =int(x[2]);
int sensor_id = int( (x[3]<<8) + x[4] );
float antwort = float(int( (x[5]<<8) + x[6] ));
if( iart == 2 ) {
float sensorwert;
switch( sensor_id ) {
default:
if( ziel == 0x6a2 )
ESP_LOGD("myesp", "Antwort von 0x680 (ESP) an 0x%x fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, fa_kenng, sensor_id, antwort);
break;
} // switch( sensor_id )
} else if(iart == 0) {
ESP_LOGD("myesp", "Schreiben von 0x680 (ESP) an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, iart, fa_kenng, sensor_id, antwort);
} else {
ESP_LOGD("myesp", "Anfrage von 0x680 (ESP) an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, iart, fa_kenng, sensor_id, antwort);
} // if( iart == 2)
- can_id: 0x6a1
then:
- lambda: |-
int ziel = (int(x[0] & 0xf0) << 3) + int(x[1]);
int iart = int(x[0] & 0x0f);
int fa_kenng =int(x[2]);
int sensor_id = int( (x[3]<<8) + x[4] );
float antwort = float(int( (x[5]<<8) + x[6] ));
if( iart == 2 ) {
float sensorwert;
switch( sensor_id ){
default:
if( ziel == 0x6a2 )
ESP_LOGD("myesp", "Antwort von 0x6a1 an 0x%x fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, fa_kenng, sensor_id, antwort);
break;
} // switch( sensor_id )
//} else {
// ESP_LOGD("myesp", "von 0x6a1 an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
// , ziel, iart, fa_kenng, sensor_id, antwort);
} // if( iart == 2)
- can_id: 0x301
then:
- lambda: |-
int ziel = (int(x[0] & 0xf0) << 3) + int(x[1]);
int iart = int(x[0] & 0x0f);
int fa_kenng =int(x[2]);
int sensor_id = int( (x[3]<<8) + x[4] );
float antwort = float(int( (x[5]<<8) + x[6] ));
if( iart == 2 ) {
float sensorwert;
switch( sensor_id ){
case 0x0005:
if( ziel == 0x680 ){
sensorwert = antwort / 10;
id(hzg_hk1_solltemp_tag).publish_state(sensorwert);
ESP_LOGD("myesp", "hzg_hk1_solltemp_tag (0x%4.4x): %f°C", sensor_id, sensorwert);
}
break;
default:
if( ziel == 0x6a2 )
ESP_LOGD("myesp", "Antwort von 0x301 an 0x%x fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, fa_kenng, sensor_id, antwort);
break;
} // switch( sensor_id )
//} else {
// ESP_LOGD("myesp", "von 0x301 an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
// , ziel, iart, fa_kenng, sensor_id, antwort);
} // if( iart == 2)
- can_id: 0x302
then:
- lambda: |-
int ziel = (int(x[0] & 0xf0) << 3) + int(x[1]);
int iart = int(x[0] & 0x0f);
int fa_kenng =int(x[2]);
int sensor_id = int( (x[3]<<8) + x[4] );
float antwort = float(int( (x[5]<<8) + x[6] ));
if( iart == 2 ) {
float sensorwert;
switch( sensor_id ){
default:
if( ziel == 0x6a2 )
ESP_LOGD("myesp", "Antwort von 0x302 an 0x%x fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, fa_kenng, sensor_id, antwort);
break;
} // switch( sensor_id )
//} else {
// ESP_LOGD("myesp", "von 0x302 an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
// , ziel, iart, fa_kenng, sensor_id, antwort);
} // if( iart == 2)
- can_id: 0x514
then:
- lambda: |-
int ziel = (int(x[0] & 0xf0) << 3) + int(x[1]);
int iart = int(x[0] & 0x0f);
int fa_kenng =int(x[2]);
int sensor_id = int( (x[3]<<8) + x[4] );
float antwort = float(int( (x[5]<<8) + x[6] ));
if( iart == 2 ) {
float sensorwert;
switch( sensor_id ){
default:
if( ziel == 0x6a2 )
ESP_LOGD("myesp", "Antwort von 0x514 an 0x%x fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, fa_kenng, sensor_id, antwort);
break;
} // switch( sensor_id )
//} else {
// ESP_LOGD("myesp", "von 0x514 an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
// , ziel, iart, fa_kenng, sensor_id, antwort);
} // if( iart == 2)
- can_id: 0x480
then:
- lambda: |-
int ziel = (int(x[0] & 0xf0) << 3) + int(x[1]);
int iart = int(x[0] & 0x0f);
int fa_kenng =int(x[2]);
int sensor_id = int( (x[3]<<8) + x[4] );
float antwort = float(int( (x[5]<<8) + x[6] ));
if( iart == 2 ) {
float sensorwert;
switch( sensor_id ){
default:
if( ziel == 0x6a2 )
ESP_LOGD("myesp", "Antwort von 0x480 an 0x%x fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, fa_kenng, sensor_id, antwort);
break;
} // switch( sensor_id )
//} else {
// ESP_LOGD("myesp", "von 0x480 an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
// , ziel, iart, fa_kenng, sensor_id, antwort);
} // if( iart == 2)
- can_id: 0x601
then:
- lambda: |-
int ziel = (int(x[0] & 0xf0) << 3) + int(x[1]);
int iart = int(x[0] & 0x0f);
int fa_kenng =int(x[2]);
int sensor_id = int( (x[3]<<8) + x[4] );
float antwort = float(int( (x[5]<<8) + x[6] ));
if( iart == 2 ) {
float sensorwert;
switch( sensor_id ){
default:
if( ziel == 0x6a2 )
ESP_LOGD("myesp", "Antwort von 0x601 an 0x%x fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, fa_kenng, sensor_id, antwort);
break;
} // switch( sensor_id )
//} else {
// ESP_LOGD("myesp", "von 0x601 an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
// , ziel, iart, fa_kenng, sensor_id, antwort);
} // if( iart == 2)
- can_id: 0x602
then:
- lambda: |-
int ziel = (int(x[0] & 0xf0) << 3) + int(x[1]);
int iart = int(x[0] & 0x0f);
int fa_kenng =int(x[2]);
int sensor_id = int( (x[3]<<8) + x[4] );
float antwort = float(int( (x[5]<<8) + x[6] ));
if( iart == 2 ) {
float sensorwert;
switch( sensor_id ){
default:
if( ziel == 0x6a2 )
ESP_LOGD("myesp", "Antwort von 0x602 an 0x%x fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, fa_kenng, sensor_id, antwort);
break;
} // switch( sensor_id )
//} else {
// ESP_LOGD("myesp", "von 0x602 an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
// , ziel, iart, fa_kenng, sensor_id, antwort);
} // if( iart == 2)
- can_id: 0x603
then:
- lambda: |-
int ziel = (int(x[0] & 0xf0) << 3) + int(x[1]);
int iart = int(x[0] & 0x0f);
int fa_kenng =int(x[2]);
int sensor_id = int( (x[3]<<8) + x[4] );
float antwort = float(int( (x[5]<<8) + x[6] ));
if( iart == 2 ) {
float sensorwert;
switch( sensor_id ){
default:
if( ziel == 0x6a2 )
ESP_LOGD("myesp", "Antwort von 0x603 an 0x%x fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, fa_kenng, sensor_id, antwort);
break;
} // switch( sensor_id )
//} else {
// ESP_LOGD("myesp", "von 0x603 an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
// , ziel, iart, fa_kenng, sensor_id, antwort);
} // if( iart == 2)
- can_id: 0x604
then:
- lambda: |-
int ziel = (int(x[0] & 0xf0) << 3) + int(x[1]);
int iart = int(x[0] & 0x0f);
int fa_kenng =int(x[2]);
int sensor_id = int( (x[3]<<8) + x[4] );
float antwort = float(int( (x[5]<<8) + x[6] ));
if( iart == 2 ) {
float sensorwert;
switch( sensor_id ){
default:
if( ziel == 0x6a2 )
ESP_LOGD("myesp", "Antwort von 0x604 an 0x%x fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, fa_kenng, sensor_id, antwort);
break;
} // switch( sensor_id )
//} else {
// ESP_LOGD("myesp", "von 0x604 an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
// , ziel, iart, fa_kenng, sensor_id, antwort);
} // if( iart == 2)
- can_id: 0x605
then:
- lambda: |-
int ziel = (int(x[0] & 0xf0) << 3) + int(x[1]);
int iart = int(x[0] & 0x0f);
int fa_kenng =int(x[2]);
int sensor_id = int( (x[3]<<8) + x[4] );
float antwort = float(int( (x[5]<<8) + x[6] ));
if( iart == 2 ) {
float sensorwert;
switch( sensor_id ){
default:
if( ziel == 0x6a2 )
ESP_LOGD("myesp", "Antwort von 0x605 an 0x%x fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
, ziel, fa_kenng, sensor_id, antwort);
break;
} // switch( sensor_id )
//} else {
// ESP_LOGD("myesp", "von 0x605 an 0x%x art: %d fa_kenng: %2.2x sensor_id: 0x%4.4x Wert: %.0f"
// , ziel, iart, fa_kenng, sensor_id, antwort);
} // if( iart == 2)