First read about network to learn how to access the built-in webserver
'config' sets or gets options. Use: config option=value ...; to set. Use: config option=? ...; to get, if supported
cu=(ID|auto|?) 6-digit hex ID of Central-Unit. auto: capture ID
rtc=(ISO_TIME|?) set local time if NTP not working
wlan-ssid=(SSID|?)
wlan-password=PW
network=(wlan|ap|lan) ap opens wlan access-point at 192.168.4.1 (restart required)
ntp-server=(gateway|dhcp|IP4ADDR|NAME) default: gateway
mqtt-enable=(0|1) enable MQTT
mqtt-url=URL broker/server URL (e.g. mqtt://192.168.1.42:7777)
mqtt-user=NAME user name on server
mqtt-password=PW user password on server
mqtt-client-id=ID default: tfmcu
mqtt-root-topic=TOPIC default: tfmcu
http-enable=(0|1) enable HTTP
http-user=NAME user name on server
http-password=PW user password on server
longitude=(DEG|?)
latitude=(DEG|?)
tz=(POSIX_TZ|?) time zone for RTC/NTP
astro-correction modifies astro table: 0=average, 1=bright 2=dark
verbose=(0..5|?) diagnose output verbosity level
set-pw=password set a config password. if set every config commands needs the pw option
pw=PW example: config pw=my_passw dst=eu;
restart restart MCU
gpioN=(d|i|o|O|q|Q|?)(h|l|m) Set gpio as pin for input (i) output (O), open drain output (o) or input/output (q,Q).
Add suffix to input to enable pull up (h), pull down (l), pull up/down (m)
Add suffix (h|l) to output to set the initial level high or low at restart
Disable gpio (d)
Example: config gpio19=ol gpio18=ih gpio20=qh gpio21=d;
rf-tx-pin=N RF output GPIO pin
rf-rx-pin=N RF input GPIO pin
set-button-pin Set-button input GPIO pin