Firmware¶

Changelog
=========

Changes in Firmware for Blitzortung.org RED/BLUE controller. Not all changes/fixes are listed here.

10.0b3 (2024-04-20)
-------------------

* new: very basic firewall
* increased: ARP table size
* minor adjustments for BLUE-Mini amplifier
* no reply on ICMP request when webserver disabled
* added option for network debug logs
* minor changes regarding inserting icons from documentation
* added possible "end" parameter in signal packet
* removed guide
* fix: fallback to static ip on dhcp failure working again
* fix: wrong transmission of key ids
* fix: no more strange chars in GNSS selection



10.0b2 (2024-01-18)
-------------------

 * show system type in header instead of "PCB"
 * prepared for BLUE-Mini development
 * fix: prevent saving settings during firmware download
 * fix: no output over USB after entering debug mode via button on startup
 * fix: crash on enabling USB-VCOM on RED
 * fix: LED/Buzzer IP signaling now does 10 ticks for digit "0"


10.0b1 (2024-01-11)
-------------------

* new: encryption with AES-GCM and privacy options for signal packets
* new: automatic firmware download and install
* new: check signature of firmware
* new: buzzer volume settings for ticks/beeps
* new: signaling last number of IP via buzzer/LED
* new: option to disable webserver (i.e. for setups in foreign networks)
* new: more privacy: do not send processor id, station id and position in signals to servers by default
* new: sending signals without gps and/or just high precision counter value (on server request for GPSless TOA)
* new: added Beidou GNSS option
* new: support more GPS baudrates on BLUE
* new: show CPU type and revision
* new: support for ublox MAX-M10 GNSS module
* new: ECDHE key exchange for remote config (enabling perfect forward secrecy)
* fix: limited MTU to 1480 max
* fix: not showing Galileo satellites due to missing ublox init
* fix: warm start ublox GPS when firmware version can not be read
* fix: SSI overflows on GPS status webpage
* fix: compress packet only once for all servers
* fix: stall on startup when network is up too fast (static config)
* fix: sometimes not showing cert information in SSL debug messages
* fix: weak encryption due to wrong random number generator configuration
* updated lwip to 2.2.0
* updated mbedtls to 2.28.6
* updated CMSIS-DSP to 1.15.0
* switched to arm-gnu-toolchain-13.2.rel1
* changed compiler optimization from -O2 to -Os to reduce size
* lots of minor improvements and bugfixes


9.5b1 (2023-03-21)
------------------

* new: TLS/HTTPS support for remote config (mbedtls 2.28.2)
* new: switch to pre defined computing server in case remote config server is not available
* changed remote config URLs for usage with own CA authority
* lowered memory usage for webserver to lower risk of blank web pages
* lowered memory usage for http client
* show correct date on GPS modules with rollover bug for the next 19 years
* fix: wrong quoting in status json
* fix: show PCB 19.0 on RED stations with bad soldered PCB
* fix: web status bar didn't show all errors


9.4 (2022-11-12)
----------------

* fix: memory leaks (by gerbold)
* fix: GPS failure on low ADC sample rates
* fix: crash on buzzer playing amp sounds but beeps are off
* fix: detect lazy network errors and reset hardware
* memory debugging (by gerbold)
* changed compiler optimization to reduce flash file size
* upgrade to newest lwip 2.1.3
* upgrade to newest STM32F4 std peripherals library 
* switched to arm-gnu-toolchain-11.3.rel1


9.3 (2022-11-04)
----------------

* Version change to 9.3


9.3-b2 (2022-11-03)
-------------------

* code cleanup 
* remove BETA from alerts
* fix: completely removed GPS year checking
* fix: removed wrong check on guest access
* fix: no reboot with Tools -> Reboot

  Special thanks to gerbold for the help!


9.2 (2018-12-31)
----------------

* new: added HTTP proxy option for remote control
* new: rebooting via HTTP works now even when there's no memory left (..&action=do_reboot)
* new: prepared for sending noise signals to server
* new: debugging option for 1PPS counter
* fix: lowered memory usage for remote control requests
* due to space limitations, jquery and jqplot isn't included in firmware anymore and will be loaded from the web (RED)


9.1 (2018-08-08)
----------------

* send some more status information about each signal to server
* fix: sending control requests too often
* fix: out of memory when sending too much channels to signal plot
* fix: showed too high PCB version
* switched to GCC ARM Embedded 7 2018 q2 toolchain


9.0 (2018-06-09)
----------------

* new: support of PCB 19.5
* new: basic support of UBX message format for u-blox MAX-M8W GNSS module
* fix: messages on status page disappeared after one second  
* fix: limit frequencies for hardware filter to ~300kHz
* fix: init tracker settings after switching modes


9.0b1 (2018-05-13)
------------------

* new: DSP for checking/filtering signals (not functional yet)
* new: added option to correct the offset in the graph
* new: option to send debug log to a syslog server IP address (UDP) 
* new: support of u-blox module MAX-M8W (GNSS/SBAS-settings and reset-commands not working yet)
* improved(?) GNSS init process
* removed debug code and improved data structures to reduce memory usage (RAM and firmware size)
* lowered amount of data to reload status page
* reduced stack size
* fix: workaround for USB-VCOM not working on PCB 19.4 in case VBUS solder bridge is not closed (BLUE)
* fix: don't update existing server IP with empty IP address "0.0.0.0"
* fix: remote setting of sample rate not working
* fix: sending UDP packets to multiple servers
* fix: no automatic gain changes for RED amplifiers in certain situation 
* fix: timer in debug log twice as fast than normal


8.4 (2018-01-17)
----------------

* new: mouseover for satellites
* fix: try to initialize amplifier more often after reboot (RED)


8.4b5 (2018-01-07)
------------------

* new: added cpu info in status json file
* fix: also read GNSS data from GNGSA message


8.4b4 (2018-01-06)
------------------

* new: ability to send noise data to servers
* new: logo animation (click to disable) ;-)
* change: "00:00" isn't a valid reboot time any more (leave it disabled or use another random time)
* improve: faster startup time
* improve: amplitude filters with higher resolution (64 slots instead of 32)
* fix: watchdog will be disabled in rare cases -> enable watchdog periodically (again)
* fix: missing last byte in compressed UDP packets
* fix: buzzer ticks on every consecutive signals instead of every 20th
* fix: don't apply user gain level in auto-adaption (i.e. on startup), just use them as max. allowed gain
* fix: DHCP was not always assigned when "link up" condition was missing on startup due to race condition
* fix: DHCP was not assigned when same static IP was used as fallback
* fix: DHCP timeout due to disabled system timer for some seconds during startup 
* fix: voltage/PPS sampling resulted in unexpected behavior and hard faults due to developers stupidity
* fix: don't display usless unknown GPS sentences
* fix: auto refresh of status page did stop when controller ran out of memory 
* several minor fixes (debug messages etc.)
* switched to GCC ARM Embedded 7 2017 q4 toolchain


8.4b3 (2017-12-06)
------------------

* fix: static IP settings not working in last firmware


8.4b2 (2017-12-06)
------------------

* flash "Fault LED" when signal couldn't be sent due to network or GPS error
* improved and cleaned up DHCP and network stuff
* show GALILEO satellites with "G" in overview
* also show "Unsaved settings..." dialog on "Status" and "Signals" page
* enabled some DHCP debugging (BLUE only)


8.4b1 (2017-12-03)
------------------

* new: added GLONASS support (experimental!) [BLUE]
* changed to new logo
* fix: correct hiding of "save to flash and reboot message"
* improved: USB <-> GPS module passthrough
* upgraded lwip to version 2.0.x (needs testing!)


8.3 (2017-11-14)
------------------

* new: support of PCB 19.4
* new: added experimental support for GALILEO (firmware update of GNSS-module needed) [BLUE]
* new: GNSS data pass-through via USB (no fw update possible)  
* added some more checks for AD converters
* fix: integer overflow of "bytes sent" values
* fix: applied patch on lwip which fixes DHCP issues (untested)
* switched to GCC ARM Embedded 6 2017 q2 toolchain


8.3b2 (2016-10-03)
------------------

* slightly raised some network buffers
* fix: crash when no crash occured before reset


8.3b1 (2016-10-03)
------------------

Note: Firmware for BLUE has some additional debugging code in this version. A minor performace drop is possible. RED firmware is not affected due to size limitations. 

* new: browse last signals in signal view
* new: button for entering DFU mode over web-interface
* new: option for silent reboot on hardfault
* new: send call stack on errors [BLUE]
* change: automatic reboot just before firmware flashing
* fix: added correct text to button description in "guide" [BLUE]
* fix: removed memory leak in signal view javascript
* fix: repaired anti-ADC-watchdog-lock-watchdog from FW 8.2
* fix: HTTP-client sometimes used wrong port number to connect
* fix: wrong MD5 checksum of firmware when flashed external 
* switched to GCC ARM Embedded 5.4 2016q3 toolchain


8.2 (2016-09-28)
------------------

* fix: reset ADC watchdog interrupt when watchdog-flag is set for two seconds 
* fix: out of memory when sending to more than one region
* fix: memory allocation errors related to network stack


8.1 (2016-09-23)
----------------

* fix: improvements for hard fault crashes and some more debug information
* fix: workaround/test for possible crashes on some specific stations


8.1b1 (2016-08-29)
------------------

* fix: restart ADC-watchdog after offset refresh


8.0 (2016-08-24)
----------------

* support for PCB 19.3
* additional remote debug information in specific hard fault situations
* refresh offset error more often 
* fix: ignoring GPS messages from QZSS satellite
* fix: port number was ignored for http-requests
* fix: firmware upload under linux failed due to timeouts
* fix: use helvetia as fallback for arial on web-interface
* fix: hide analogue user input when not available [BLUE]
* fix: sometimes no restart or crash after firmware update


8.0b5 (2016-06-08)
------------------

* filter settings visible when solder bridge J0 closed [BLUE]
* description for input selection instead of input numbers [BLUE]
* sending information about inputs and filters to computing server [BLUE]
* minor changes in server urls for remote config
* lowered max opened and listening tcp connection
* factory settings/debug mode with BOOT1 button: press and hold for 2s/10s just after reset [BLUE]
* fix: raised stack memory size and added collision check
* fix: network LED stayed off after blinking, even when status is good [BLUE]
* fix (maybe): threshold/signal detection stopped after some when time in manual mode w/o noise adaption 
* fix: minor issue that click on Firmware Update button had no effect
* switched to GCC ARM Embedded 5.3 2016q1 toolchain


8.0b4 (2016-04-05)
------------------

* re-added debug output via USB connector [BLUE]
* blue LED now blinks every second to show good GPS [BLUE]
* static gain information of onboard amps modified (not the final value) [BLUE]
* fix: no sampling after startup in case all thresholds are default values (120mV) [BLUE]


8.0b3 (2016-04-03)
------------------

* final changes regarding PCB 19.1 [BLUE]
* try to test whether on-board amplifier is "connected" by raising gains to maximum [BLUE/dev]
* less CPU usage when playing signals through buzzer
* not so much beeping on GPS error
* fix: disabling LEDs by LCD sleep resulted in broken LCD and amplifier1 communication [RED] or other disabled pins [BLUE/dev]
* fix: after firmware flash update procedure, the reset was broken
* fix: infinitife loop in rare cases due to non-initialized debug UART DMA
* fix: button has to be released after reset to factory settings to prevent too much writes to flash on boards without button
* fix: display stays dark with factory settings [RED]
* fix: network performance problems with on board MAC due to DMA buffer underflow handling [dev]

Not fixed yet: Loosing amplifiers (RED only so far) and sudden reboots. 


8.0b2 (2016-02-14)
------------------

* added basic signal wave generator for testing amplifier [BLUE] 
* improved sampling of external voltages/1pps and added more channel(s)
* show only usable channels on amplifier to buzzer output
* no more automatic reboot at 00:00 by default
* added possibility to completely disable amplifier channel
* changed behaviour of LEDs [BLUE]
* enabled button [BLUE/dev]
* added more channels colors to the LCD display [dev]
* manual change of link speed (not working yet) [dev]
* use interrupt instead of polling for Ethernet [dev]
* fix: don't show username to guests
* fix: sometimes corrupted data due to encoding
* fix: transmitted non-encoded data with wrong channel number
* fix: calculated sample rate had minor deviations
* fix: amplifier sometimes doesn't get recognized after reconnect 
* fix: static IPs not working / sometimes crash when releasing DHCP
* fix: some memory allocation bugs
* fix: wrong ADC <-> amplifier channel assignment / restart ADC in case of failure
* fix: handle ADC overrun condition
* switched to GCC ARM Embedded 5.2 2015q4 toolchain (-> smaller firmware size)

--> reached over 40000 lines of own code - aaargh... :-/


8.0b1 (2016-01-24)
------------------

Note: Due to minor changes in the settings structure, some (or all) settings have been set to defaults.
Please check your configuration! 

Note: System RED and BLUE share the same code base. If there are specific changes for just one
system, then it will be noted in the changelog entry.

* new: added support of BLUE final and development PCBs, which includes:
  - MEDIATEK MT3333 GPS chipset
  - gain and input changes of op amps through SPI
  - clock output for low pass filter ICs
  - more LEDs
  - STM32F42x CPU-Line [dev]
  - Ethernet through integrated MAC [dev]
  - ILI9341 TFT display [dev]
  - Reading touch screen values through STM32 ADCs [dev]
* new: direct adjusting sampling frequency through timer
* new: compression of UDP packets (lzfx)
* new: delta encoding of channel 
* new: non-lossless encoding of channel data by cutting out noise
* new favicon depending on system
* fix: uploading firmware fails occacionally
* improvement: lots of general changes "under the hood"
* improvement: minor style changes in the signal graph
* lots of bugfixes


7.4 (2014-08-17)
------------------

* minified css/js files
* fix: IE gets confused by .gz file ending --> use normal file ending


7.3 (2014-08-16)
------------------

* added information about current mode and some color to the status page


7.3b1 (2014-08-09)
------------------

* GPS: added availability value in web interface
* NET: added MTU config option
* change outgoing UDP port every 5 minutes
* changed Google Maps link to ".com"
* fix: prevent sending accidentaly triggered signals 
* fix: small bug in action numbering
* fix: lower browser memory usage for status page


7.2 (2014-07-13)
----------------

* TOA-ALERTS: general improvements
* fix: problem with remote control of filter


7.1 (2014-07-04)
----------------

* TOA-ALERTS: general improvements
* fix: memory leak in action URL call


7.0 (2014-06-29)
----------------

* show hint when amp 12 is on input 2 or amp 13 is on input 1
* AS3935: minor fixes, automatic calibraton checks
* fix: filter and adaption disable option per channel couldn't be disabled 
* fix: possible memory leak in actions
* fix: remote control messages


7.0b5 (2014-05-18)
------------------

BETA release!

* fix: auto gain adjustment sometimes stalled
* AS3935: several minor changes in error handling


7.0b4 (2014-05-11)
------------------

BETA release!

* AS3935: raised IRQ level
* improvments regarding remote control


7.0b3 (2014-04-23)
------------------

BETA release!

* NEW: sampling of 5V power supply with rate of 8.5MSps
* raised thresholds for auto amplitude filters a lot to prevent loosing too much signals
* fix: no more mysterious gain changes (introduced in 7.0b1) 
* fix: raised max. length of action URL again


7.0b2 (2014-04-20)
------------------

BETA release!

* added filter debug checkbox
* show filters for each channel in signal view
* reset network hardware if remote config connection fails too often
* fix: urlencode strings in user URLs
* fix: load user gains/threshold on disabling auto adapt feature


7.0b1 (2014-04-18)
------------------

BETA release!

* NEW: Filter by occurence of max. amplitudes in signals
* NEW: LEDs can be switched off when LCD dimmed
* improved support for new E-field amplifier
* improvements in some other filters
* noise adaption can be disabled for single channels
* some improvents in noise adaption
* force lower gain, if to high/low voltage (noise) affects ADC accuracy
* support manufacturer GNS as GPS device
* fix: GPS data sync bug
* fix: raised max. length of URL 
* fix: noise adaption stuck in gain 2*2
* fix: minor LCD distortions
* switched to GCC ARM Embedded 4.8 2014q1 toolchain


6.8 (2014-03-13)
----------------

* AS3935: added URL parameters: strokes_all, disturbers_all, events
* minor changes in communication with amplifier
* fix: memory leak when too much HTTP ressources needed
* fix: enabling potentiometer through LCD working again


6.7 (2014-03-02)
----------------

* WEB: responsive design for smartphones (beta!)
* WEB: added station id in head - click to show it in the title
* removed antenna selection and information
* raised some network resources and lowered memory consumption
* fix: connection issues with HTTP control in combination with some routers/firewalls (thx to Don)
* fix: noise adaptation not working when threshold is zero (in automatic mode)
* fix: plot and satellite not showing just after firmware update
* fix: clarified the "Pending..." message after firmware upload and auto refresh of the page
* fix: no more log out after firmware upload when auth is enabled


6.6 (2014-02-20)
----------------

* WEB: show link to changelog when new FW available
* WEB: show NTP request count
* WEB: some style changes
* WEB: seconds converted to days/hours/minutes
* no-connection reboot/timeout set to 2 hours 
* fix: web alert sounds
* fix: memory curruption on boot caused by alert settings
* fix: stack curruption due to AS3935 actions (!)
* fix: ADC hangs on re-init


6.5 (2014-02-16)
----------------

Note: Firmware update via web-interface had some strange bugs in 6.3/6.4 ! 
Chance is high, that it won't work. If upload fails (you won't see a warning message), then
you must save your settings again. Otherwise they are lost on the next reboot!

* NEW: StratumOne NTP time-server (not as accurate as similar products due to hardware restrictions) 
* ALERTS: settings always visible, even when server is not capable for it
* AS3935: Tune capacitor value can be manually adjusted
* ACTIONS: more parameters added to the URL depending on calling peripheral
* ACTIONS: can be called by URL now 
* ACTIONS: added status on main page 
* WEB/ACTIONS: alert sounds through browser on action (toggle by clicking on name in status, saved in a cookie)
* WEB: changed method of loading javascripts (one big file instead of several small ones)
* WEB: menu instead of dropdown-box on settings page
* fix: no more gain changes by noise adaptation when amplifier potentiometer is enabled
* fix: hardened web-based firmware update, so that it retries on flash write error (and does not stop as it was before)


6.4 (2014-01-22)
----------------

* new map of GPS satellite constellation
* fix for fix for problems with negative smoothed GPS coordinates after boot (sorry again)
* other minor fixes


6.3 (2014-01-20)
----------------

* some changes on auto noise adaptation
* fix: web-interface firmware update repaired and implemented some function to warn developer when not working ;-)
* fix: problems with negative smoothed GPS coordinates after boot (sorry region 2+3)


6.2 (2014-01-19)
----------------

* improved auto adapt to noise level adjustment (shared channel support, remote configurable)
* I2C: frequency can be changed
* fix: don't display "STR" when no alerts are enabled and AS3935 is not present
* fix: auto-config stays in interference mode when noise level was too high 
* fix: minor signal display issues


6.1 (2014-01-12)
----------------

* NEW: automatic gain/threshold <-> noise level adjustment (very beta!)
* WEB: minor improvments on signal view
* WEB: message when firmware update check fails
* LOG: Enable USB-Virtual-COM-Port when pressing blue button before booting 
* SYS: faster boot, but show boot screen for some seconds
* AS3935: don't create new event when no lightning has been detected
* fix: on multiple alert events, call action with highest priority only (for TOA and AS3935)
* fix: bug, which caused too high CPU usage
* fix: wait some time before reset GPS smoothing
* fix: memory leak in webserver



6.0 (2014-01-05)
----------------

NOTE: Due to minor changes in the settings structure, some settings have been set to defaults.
Please check your configuration or reset them to defaults. 


Major changes and improvements:

* NEW: ACTIONS and lightning ALERTS - individual combinations of TOA-lightning, AS3935, I/Os and buzzer sounds :-)
* WEB: open parts of webpages in a separate popup window
* WEB: live plot with received/sent signals on status page
* TRACKER: filter out spikes caused by digital signals the controller hardware (lower thresholds possible)
* TRACKER: record noise level of 10 times per second (can be displayed in signal view)
* TRACKER: prevent overlap of two consecutive signals (up to 50% overlapping before)
* ADC: Alternate channel mapping when two amps connected: use same threshold for whole amplifier instead of same channel of both amplifiers 
* LOG: Option to use micro-USB-jack as virtual COM-port to see debug output (very beta!)
* AS3935: nicer display of events in web-interface


Minor changes, improvments and fixes:

* WEB: signal rate in title
* WEB: using dynamic memory for webpage contents
* WEB: slightly darker fonts on the web-interface
* WEB: improved data transmission signal view: can now be used on more than one device at the same time
* WEB: thresholds in graph
* AMP: Option for a channel, so that it won't be transmitted to servers (for experiments) 
* SYS: Option to reboot once per day at given time
* SYS: Option for CPU sleep mode, which saves up to 40mA@3V (CPU usage calculation doesn't work with it)
* SYS: Option for voltage check toggle, for those who have problems here
* SYS: Option for flash prefetch toggle, which eliminating some (very low) noise in ADCs 
* SYS: Check whether uploaded FW is equal to running firmware
* LCD: Option to disable LCD page looping: page will stay on user selected one (and return there after an event)
* BUZZER: different way of playing sounds (unfortunately deep beep is not as loud as before)
* LOG: introduced console-commands: r=reboot, m=free dynamic mem, s=show memory content
* LOG: logging debug output via UDP (like good old tracker XT; enabled by server)
* GPS: smooth values stay after reset (using backup SRAM)
* GPS: faster availability of GPS after reboot
* AS3935: sending events to server via remote config
* AS3935: auto noise floor adjustemnt
* USER-I/O: added high-impedance output option
* NET: (maybe bugfix) reset network when no ingoing packet for some time
* fix: don't touch USER-I/O when not enabled (may solve issue with buzzer)
* fix: several bugs on AS3935 and USER-I/O functions
* switched to GCC ARM Embedded 4.8 2013q4 toolchain (-> smaller binary on the same optimization level)



5.0 (2013-12-01)
----------------

* NEW: 1PPS-sampling with 8.4MSps to check timings and 1PPS quality
* NEW: Live status display in web-interface
* NEW: Possibility to connect AS3935 lightning sensor via I2C (experts only)
* NEW: I/Os for own purposes (experts only !!!)
* minor changes in networking
* supports PCB-Id 2 (10.4)
* minor layout changes
* fix: reset ENC28J60 on error and no more ENC28J60 interrupt on error (fixes high CPU usage)
* fix: signal page timeout detection on refresh
* fix: some values on http remote config weren't updated


4.5 (2013-10-06)
----------------

* reboot when no http-connection or no valid information got over remote config
* improved GPS smoothing behavior and lowered tolerance
* LCD can be rotated by 180 degrees
* fix: memory not freed when control connection could not be established
* fix: some more memory leaks closed
* fix: no more init loops for non Mediatek GPS modules 
* fix: DHCP renew works now
* fix: blue LED forgets blinking on some 1PPS pulses
* updated to GCC ARM Embedded 4.7 2013q3 toolchain


4.4 (2013-09-15)
----------------

* buzzer signal output settings can be saved to flash now
* GPS individual command text field
* GPS PA6H init enables AIC and disables EASY (see PA6H datasheet for more info)
* signal view: settings saved in cookies
* fix: don't show valid uploaded firmware when it's no more available in flash


4.3 (2013-09-12)
----------------

* volume changes for signal pass-through
* fix: controller-id scrambled on LCD on station setup
* fix: faster update of signal times in LCD


4.2 (2013-09-12)
----------------

* fix: firmware upload works now in Chrome 
* fix: GPS improvements, EM406 should work now


4.1 (2013-09-10)
----------------

* Amplifier -> Buzzer output improved! Hear stroke discharges during normal operation :-)
* CPU-Load estimation
* Show save-button when unsaved settings exist 
* LCD boot image
* added a small guide in under "About"
* several small improvements and bugfixes


4.0 (2013-09-03)
----------------

* NEW: Firmware-Update with browser
* NEW: LCD-Driver by Roland (some fine-tuning needed)
* NEW: filter signals on too high amplitudes (currently only via remote config)
* show info when settings are not saved
* show warning when javascript disabled
* check auth also for debug log and signal data requests
* fix: DHCP retry when failed
* fix: could not save settings on first start

Note: New settings storage position. Settings will be reset to default values after update!


3.3 (2013-08-26)
----------------

* reboot after 2 hours when not getting any connection 
* fix: could not save LCD contrast/backlight
* fix: smoothing wrong GPS values when running >1day


3.2 (2013-08-23)
----------------

* averaging and beep on signal page
* fix: live signal stopped working after some seconds on non-Firefox browsers
* fix: DHCP and Network timeout beavior 
* fix: Potentiometer setting not working
* fix: Wrong samplerate in graph
* fix: Antenna not shown to guest


3.1 (2013-08-18)
----------------

* fix: LCD not working with factory settings
* fix: Logout on maximize
* fix: wrong reset value was sent


3.0 (2013-08-18)
----------------

* NEW: more info and options on the signal page
* NEW: live message log window (see tools)
* added header for IE10 (press Alt+S if it's still not working)
* fixed backlight=0% could not be saved
* fixed (maybe) some hard fault conditions
* fixed sudden disconnect on changing network settings


2.5 (2013-08-05)
----------------

* sending program counter to server after hardfault reset
* LCD brightness 100% on reset
* fixed buffer overflow on parsing antenna string from server


2.4 (2013-08-04)
----------------

* check position accuracy on smoothing
* fixed wrong visibility of gain settings


2.3 (2013-08-03)
----------------

* added debug output on hardfault (serial+LCD)
* enable antenna status for PA6H with newer firmware 
* signal page works now with resolution != 12bit
* disable LCD backlight PWM on 100% brightness
* Change amplifier LEDs remotely 
* fixed crash in http client
* fixed crash on wrong pcb-id
* fixed threshold value display


2.2 (2013-07-27)
----------------

* added expire header for IE
* added warm start tool for GPS
* added trigger statistics for channels
* GPS startup timeout increased to 300s
* GPS firmware requests improved + support for SiRF (untested)
* possibility to add small help buttins on the web interface 
* even more interference mode improvements
* fixed crash/reboot on high signal rate (network stall)
* fixed LED bootup sequence indicator (for debug purposes)
* fixed missing new line in remote request
* fixed LCD refresh
* fixed broken station control POST request


2.1 (2013-07-23)
----------------

* Better handling of interference mode: instead of switching on-off-on-off... it stays in interference mode for a while
* Adjust buzzer beep on interference mode delay
* Webserver port can be changed
* info about station-id/user-id on LCD
* GPS tools for your module
* GPS position smoothing
* fixed some remote-control bugs
* fixed signal view not updating in IE


2.0 (2013-07-14)
----------------

* Initial release for all participants