If you navigate your mouse over an input field / button, you see a detailed description what it does / which values are expected.
Info for SNR/RSSI path encoding
If enabled, add SNR and RSSI in path on receiption, prefixed with 'Q'. Examples:
SNR 23 RSSI -73 -> Q2373
SNR -03 RSSI -104 -> QA3K4
SNR -13 RSSI -114 -> QB3L4
Still testing, if it behaves good to our network.
Use with care; resulting longer path consumes a bit more airtime.
TTGO T-Beam middle hardware-button: User key functions:
short press
If OLED is enabled and OLED is OFF:
a short press will wake it up and show current data (as "Display Timeout" seconds
If OLED is disabled or OLED is ON:
with GPS-FIX immediate sending of a frame with the position from the GPS
without GPS-FIX, immediate sending of the frame with the position saved in the configuration
long press
toggle on or off WiFi and WebServer
Cave: if you long-press during boot, your settings are purged!
TTGO T-Beam left/right hardware-buttons:
Left button (nearby USB-port): if long-pressed, your device will powered off (press 7s), or is switched on again (2s).
Right button (lateral): short-press reboots your device (restarts the CPU).
Tips for reducing power (Usage as tracker only):
WiFi OFF
be aware, that aprs-is connection depends on the Webserver and will stop working).
select option 0 to disable WiFi & APRS-IS
select option 1 to disable WiFi if a bluetooth client is connected in between 60s on boot (recommended for portables, and for LORA32_21 devices)
LoRa Receiver OFF:
reduces power consumption, if you just use the device as a tracker
Fixed Beacon off:
Smart Beaconing is activated, if there is no fixed beacon
extended Wifi Config:
which WiFi is selected?
first, the SSID which is configured via the WebSiet will be searched
second, if that SSID is not found, the WiFi configured in data/wifi.cfg will be searched
third, if that SSID is also not found, a local accesspoint with the SSID "call AP" will be created. After connected to, this Webserver will be reachable with the IP Address 192.168.4.1
data/wifi.cfg
wifi.cfg in the directory data contains an SSID and password of the AP for the second try described above
the total length of this file must not exceed 256 Byte. The password must not be shorter that 8 byte. The json structure must not be changed
if something is wrong or the file is missing, the complete file will be ignored and step 2 (above) will be skipped
To upload wifi.cfg to your board you have to do this via Upload File System image in PlatformIO!
To find the 'Upload File System image' click the PlatformIO symbol (the little alien) on the left side, choose your configuration, click on 'Platform' and search for 'Upload File System image'. If you use platformio-cli, upload the filesystem as described below.
Platform.IO CLI
if your computer is a raspberry PI3 or if you do not want/need the overhead of the Platfrom.IO GUI, you can use the CLI
Compile and Upload Firmware: ~/.platformio/penv/bin/pio run -e [board identifier] -t upload --upload-port /dev/[port]
start serial monitor: ~/.platformio/penv/bin/pio device monitor -p /dev/[port] -b 115200
all the commands above executed in that order, will completely erase the board, compile and upload the filesystem, compile and upload the current firmware, reboot the board and start the serial monitor
if a precompiled fw should be uploaded, without compilation, use the nobuild switch:
~/.platformio/penv/bin/pio run -e ttgo-t-beam-v1.0-development -t nobuild -t upload --upload-port /dev/ttyACM0
Hardware notices
TTGO LoRa32 V2.1 (aka T3 V1.6.1)
Hardware limitation: if bluetooth is enabled and BT-client is connected, WIFI (-> Web-Server) does not work anymore.
You'll see the red LED while booting turned on for 60s as indicatior for waiting for BT-clients.
Hack: firmware compiled with -e ttgo-lora32-v2.1 and bluetooth configuration variable is set to enabled, now listens on boot up to one minute for your bluetooth device to connect.
If a bluetooth device connects, it does not start the Web-Server. Else, it closes SerialBT port and starts the Web-Server on LORA32_21 devices.
See also: new feature for switching WIFI off (i.e. if you use the device as portable tracker), if you don't need it: Webserver eats abt 80mA..
How to switch the Webserver on again, please read the long-press button (GPS) section.