Difference between revisions of "Protocol decoder:Easymatic"
| Line 72: | Line 72: | ||
{| class="alternategrey sortable sigroktable" | {| class="alternategrey sortable sigroktable" | ||
!Frame (first byte) | !Frame (first byte) | ||
!Equipement | |||
!2sd byte | !2sd byte | ||
!3th byte | !3th byte | ||
| Line 81: | Line 82: | ||
|- | |- | ||
| 0A | | 0A | ||
| Easymatic | |||
| ? | | ? | ||
| colspan="2"|? | | colspan="2"|? | ||
| Line 89: | Line 91: | ||
|- | |- | ||
| 0B | | 0B | ||
| Boiler | |||
| ? | | ? | ||
| ? | | ? | ||
| Line 97: | Line 100: | ||
|- | |- | ||
| 0C | | 0C | ||
| Easymatic | |||
| 00? | | 00? | ||
| colspan="2"| T°C max boiler | | colspan="2"| T°C max boiler | ||
| Line 104: | Line 108: | ||
|- | |- | ||
| 0D | | 0D | ||
| Boiler | |||
| 00? | | 00? | ||
| 00? | | 00? | ||
| Line 112: | Line 117: | ||
|- | |- | ||
| 0E | | 0E | ||
| Easymatic | |||
| Hour | | Hour | ||
| Day | | Day | ||
| Line 121: | Line 127: | ||
|- | |- | ||
| 01 | | 01 | ||
| Boiler | |||
| 40? | | 40? | ||
| colspan="2"| T°C drink water | | colspan="2"| T°C drink water | ||
| Line 128: | Line 135: | ||
|- | |- | ||
| 02 | | 02 | ||
| Easymatic | |||
| C1? | | C1? | ||
| colspan="2"| Set point room T°C day | | colspan="2"| Set point room T°C day | ||
| Line 135: | Line 143: | ||
|- | |- | ||
| 03 | | 03 | ||
| Boiler | |||
| 00? | | 00? | ||
| ? | | ? | ||
| Line 144: | Line 153: | ||
|- | |- | ||
| 04 | | 04 | ||
| Easymatic | |||
| 05? | | 05? | ||
| colspan="2"| Set point frost protection room T°C | | colspan="2"| Set point frost protection room T°C | ||
| Line 151: | Line 161: | ||
|- | |- | ||
| 05 | | 05 | ||
| Boiler | |||
| Boiler bits command | | Boiler bits command | ||
| colspan="2"| Set point frost protection room T°C | | colspan="2"| Set point frost protection room T°C | ||
Revision as of 14:52, 21 November 2017
| File:Easymatic.jpg | |
| Name | EASYMATIC |
|---|---|
| Description | Asynchronous, serial bus, differential |
| Status | planned |
| License | GPLv2+ |
| Source code | decoders/uart |
| Input | logic |
| Output | Easymatic protocol |
| Probes | — |
| Optional probes | Thermostat, Boiler |
| Options | invert_thermostat, invert_boiler |
The easymatic protocol decoder can decode the thermostat Easymatic bus protocol used by De Dietrich.
Hardware
Differential link
The easymatic is linked to the boiler with two wires. This link can feed power to the easymatic. Easymatic can have two R4 accu in order to save data if the power cut. Boiler power is a 24V modulated with communication power.
Communication is always working.
[To be confirmed]
The hardware is similar to OpenTherm Specifications : - differential link - about 24V - tension modulation for boiler - intensity modulation for thermostat (easymatic) ?
In order to link with a logic analyzer Saleae Logic an interface must be done.
Electrical coding
[To be define]
Idle state
[To be define]
Protocol
Uart based
Whereas OpenTherm use Manchester code, the easymatic seems to be based on Universal Asynchronous Receiver Transmitter (UART). It's a : - 1200 bauds communication. - 8 bits of data - no parity - one stop bit
The bit order of the 8 data bits is LSB-first.
details
[To be discovered and detailed]
Frames are repeated twice
To be define : how an order is send
All frame are composed by 6 bytes Boiler frames begin with a byte in 01, 03, 05, 07, 09, 0B, 0D Thermostat frames begin with a "boiler beginning frame +1" : 02, 04, 06, 08, 0A, 0C, 0E
Frame 0A/0B
| Frame (first byte) | Equipement | 2sd byte | 3th byte | 4th byte | 5th byte | 6th byte | Comments |
|---|---|---|---|---|---|---|---|
| 0A | Easymatic | ? | ? | ? | ? | ? | |
| 0B | Boiler | ? | ? | ? | T°C exterior | example : 70,0°C = 0700DEC = 02BCHEX | |
| 0C | Easymatic | 00? | T°C max boiler | Set point frost protection T°C exterior | |||
| 0D | Boiler | 00? | 00? | 00? | T°C exterior | ||
| 0E | Easymatic | Hour | Day | Minutes | FF? | FF? | |
| 01 | Boiler | 40? | T°C drink water | T°C boiler water | |||
| 02 | Easymatic | C1? | Set point room T°C day | Set point room T°C night | |||
| 03 | Boiler | 00? | ? | ? | ? | ? | |
| 04 | Easymatic | 05? | Set point frost protection room T°C | Set point T°C drink water | |||
| 05 | Boiler | Boiler bits command | Set point frost protection room T°C | Set point T°C drink water | |||