Add a one-tap audio mute on the VFO and Channel screens:
- SK2 short-tap toggles mute via the built-in audioAmpMute()/audioAmpIsMuted().
The tap is only consumed by the existing "set TX TG to incoming" behaviour
while a DMR QSO is on screen, so mute works everywhere else.
- Header: a bold "M" is shown just left of the battery while muted (the
firmware's built-in strike-through over the mode text also still shows).
- LED: flashes red for 0.5s every 2s while muted (main loop), overriding the
normal RX/TX LED.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Render the VFO/Channel frequency (and the SK1-held frequency view, which share
uiUtilityDisplayFrequency) as 7-segment "LED" digits instead of the normal font,
on colour displays.
- HX8353E_display.c: displayDrawFrequencySevenSeg() draws each digit's 7 segments
as filled rectangles; lit segments use the theme frequency colour, inactive
segments a dimmed (~3/8 intensity, same hue) version, giving the classic LED
look with faintly-visible "off" segments. The decimal point takes half a cell.
- Digits are 12 px wide (wider than the 8 px font) to fill the space toward the
"MHz" label; height follows the existing single/double-height frequency layout.
- Monochrome displays keep the normal font.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Rework the header RSSI bar (uiUtilityDrawRSSIBarGraph) from a solid two-stage
bar into discrete blocks, one per S-level, on colour displays:
- 9 green blocks for S1..S9 (4 dB per S-unit) plus 6 red blocks for the S9+
region (10 dB per block, S9+10..S9+60), drawn with 2 px gaps so the header
background shows between them.
- Proportional fill: full blocks below the level, leading block partially filled
to reflect the exact signal.
- Bar height raised 4 -> 6 px; the FM/DMR mic-level bars follow the same height
so nothing is left behind when switching RX <-> TX.
- Scale labels below the blocks: S1/S3/S5/S7/S9 under the green zone and
+20/+40/+60 under the red, centred under their blocks (font_6x8). The label
row is blanked while transmitting.
Monochrome displays keep the original solid bar. Existing analog S9+ RSSI
compression is preserved, so calibration is unchanged.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
