BUILD OPTIONS
DEBUG=1
enable serial debugging
DEBUG_NO_METER=1
dont wait for meter to answer
DEBUG_SHORT_WEB_CONFIG_TIME=1
dont wait for web config
IMPULSE=1
meter type is impulse based (100 mS)
EN61107=0
meter type is KMP (Multical 601)
EN61107=1
meter type is en61107, sub type Multical 66 C
MC_66B=1
meter type is en61107, sub type Multical 66 B
THERMO_NO=0
thermo actuator is normal closed
THERMO_NO=1
thermo actuator is normal open
LED_ON_AC=1
use led to indicate ac state
SERIAL=9999999
serial number for meter used for device's SSID: IMPULSE meters EL_9999999 and other Kamstrup meters KAM_99999. Used in wifisetup make target.
KEY=ef500c9268cf749016d26d6cbfaaf7bf master key for crypto, 16 bytes Fist 8 bytes hex encoded (ef500c9268cf7490) is wifi setup password. Master key is sha256 hashed to 32 bit and first first 16 bytes is aes key and last 16 bytes is hmac sha256 key.
Crypto is applies on mqtt packages like: first 32 bytes of mqtt_message contains hmac sha256, next 16 bytes contains IV last part is aes encrypted data
MQTT format for messages sent to meter
| Topic | Message |
|---|---|
| /config/v1/9999999/ping | |
| /config/v1/9999999/open | [unix time] |
| /config/v1/9999999/close | [unix time] |
| /config/v1/9999999/status | |
| /config/v1/9999999/set_cron | minute=30&hour=&day_of_month=&month=&day_of_week=&command=open |
| /config/v1/9999999/cron | |
| /config/v1/9999999/clear_cron | [unix time] |
| /config/v1/9999999/ping | |
| /config/v1/9999999/version | |
| /config/v1/9999999/uptime | |
| /config/v1/9999999/rssi | |
| /config/v1/9999999/ssid | |
| /config/v1/9999999/save (only pulse meter) | |
| /config/v1/9999999/mem | |
| /config/v1/9999999/reset_reason |
MQTT format for messages sent from meter
| Topic | Message |
|---|---|
| /sample/v1/9999999/[unix time] | heap=20000&t1=25.00 C&t2=15.00 C&tdif=10.00 K&flow1=0 l/h&effect1=0.0 kW&hr=0 h&v1=0.00 m3&e1=0 kWh& |
| /cron/v1/9999999/[unix time] | 12 |
| /ping/v1/9999999/[unix time] | |
| /version/v1/9999999/[unix time] | [sdk version]-[git version] |
| /status/v1/9999999/[unix time] | [open |
| /uptime/v1/9999999/[unix time] | [uptime in seconds] |
| /rssi/v1/9999999/[unix time] | [rssi of the wifi it is connected to (in dBm, 31 if fail)] |
| /ssid/v1/9999999/[unix time] | [ssid of the wifi it is connected to] |
| /save/v1/9999999/[unix time] (only pulse meter) | saved |
| /mem/v1/9999999/[unix time] | heap=9672& |
| /reset_reason/v1/9999999/[unix time] |