; mok, firmware for micro KEYER 2R (MK2R/MK2R+), change log
; by Martin Bujdak, microHAM
--------------------------------------------------------------------------------

v3.0, released 071122
  - Some changes in keyer protocol and settings format was introduced to be
    compatible with router v5.1.0. Hence firmware MUST be upgraded and power-up
    settings MUST be again stored to EEPROM of keyer.
  - Firmware utilizes extended frequency/mode information from router CAT
    decoder:
    - Keyer mode follows TX mode of focused radio.
    - Band lock is active when TX band of focused radio equals to RX band
      of the second radio.
  - bug fixed: Winkey lead time was derived from settings of TX foxused radio
    instead of settings of WinKey focused radio. It can differ when "Reverse
    WinKey Focus" mode is selected.
  - BackSpace on PS2 keyboard now functions as ESC.
v2.2, released 071017
  - serious bug fixed: Under some circumstances a data sended from computer
    to keyer could be lost. It caused various undesirable keyer behavior
    (incorrect PTT configuration, incorrect WK commands, lost data for WK, ...)
  - bug fixed: PS2 keyboard/pad sporadically freeze in state in which it didn't
    respond to key strokes.
  - CW output is allowed only in CW mode.
  - PTT from paddle is generated only in CW mode. WinKey command "PTT On/Off"
    still can be used to generate PTT in non CW modes.
v2.1, released 070912
v2.0, released 070905 (testing)
  - Implemented WinKey command parser to get WinKey setting under full control.
  - PTT selection (PTT1/PTT2/noPTT) was unified for all PTT sources (foot
    switch, serial PTT, WinKey)
  - PTT delay of each radio was coupled with WinKey PTT Lead. According to TX
    focus WinKey PTT Lead is adjusted.
  - Added new configurable key functions (switch mode, temporarily disable
    PA/LNA PTT, swap paddle, force QSK mode) that can be assigned to num pad key
    combinations ('*' and number 0-9)
  - Function (scenarios):
    - States "TX on R1/R2" was splited to "Computer TX on R1/R2" (Latch) and
      "Manual TX on R1/R2" (Monitor). Manual TX states have replaced refused
      "Headphone side tone".
    - Added "Reverse Latch" a "Reverse Monitor" modes.
    - Lowered STEREO signal priority (During TX the STEREO signal is ignored).
  - Added new functions on ACC I/O pins: PA PTT, LNA PTT, CW Input (Hand Key),
    "Focusd Band Data Output".
  - Band lock can be disabled (inband SO2R)
  - Band data on ACC are locked during TX.
  - bug fixed: When validity of band data timeouted keyer changed band data
    output to incorrect value. Now outputs stay unchanged.
  - bug fixed: WPM control from PS2 keyboard/numpad didn't work in standalone
    mode.
v1.7, released 070615
  - bug fixed: External inhibit inputs no longer lock PA PTT and LNA PTT.
v1.6, released 070115
  - Added possibility to steer FSK (both FSK channels are redirected according
    to TX focus and audio input is redirected according to RX focus).
  - Extended router-firmware protocol:
    - Possibility to start/abort playback/recording of CW/FSK messages
    - Forced switching of keyboard mode in manual mode
  - Audio output is no longer restricted to focused radio when audio codec is
    selected for at least one radio and SO2R mode is disabled.
  - bug fixed: Removed glitch that occurred on all ACC pins at power up.
  - Added another output lock that applies at startup. This prevents keying
    before first band data are obtained.
  - NUM LED on PS2 keyboard is used in voice mode too.
v1.5, released 061211
  - bug fixed: For the case when "Latch headphone switching" was disabled
    RX focus was incorrectly stated.
v1.4, released 061116
  - bug fixed: Band Decoder compatibility
  - Added possibility to disable generation of footswitch signal (FS) on LPT.
  - Small change to support "so2r protocol" of router v4.0.7.
v1.3, released 061031
  - Changed format of how modes (MIX,A,B,C) are stored to scenarios.
v1.2, released 061019
  - Control of headphone and ACC outputs has been extended to fully support
    "so2r protocol" of router v4.0.4.
  - Function key holding time needed to write current state has been prolonged
    to 1 second.
v1.1, released 060925
  - Keyer is initialized to state saved at power off instead of default state.
  - Added headphone side tone possibility.
  - bug fixed: Corrected actualization of band data info when band data input
    from ACC is switched off.
  - Added activity signalization of scenarios(functions) 5 to 8 by flashing
    LEDs.
v1.0, released 060912
  - First release for MK2R/MK2R+.