Generic AVR DU board fixes: fuses, usable defaults, DU-correct core paths - #651

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ws-asahi wants to merge 12 commits into

SpenceKonde:masterfrom

ws-asahi:fix/avrdu-board-support

Commits on Aug 8, 2026

Fix operator precedence in ADC-disabled check
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committed
25e8762
Fix unreachable chan=255 (auto-select) in event generator pin setup
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63c042f
Flash: fix writeBytes - dropped trailing byte, corrupted neighbour, lost data pointer
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30f456d
boards.txt: AVR DU highestcb is B1, not B2 (no DU part has a TCB2)
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3ff0d58
boards.txt: AVR DU - define resetpinbits/eesave and actually write SYSCFG0
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c7d35d1
AVR DU: menu-controlled VUSB regulator enable for non-USB use
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7928475
analogRead: shift by native resolution, fixing 10-bit reads on the DU
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66d04a8
wiring_extra: DU-series cannot use EVGENCTRL bits 3/7 as in-use flags
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48d3a1a
DU variants: give USART0/USART1 usable default mux positions
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fa343ef
PWMTest: make the example run on the DU-series
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87648a2

Commits on Aug 9, 2026

usbvreg: correct the rationale in comments - PC3 does not need VUSB
ws-asahi
committed
31f60f8

Commits on Aug 27, 2026

ADC: fix DU internal channels and analogClockSpeed on the DU
ws-asahi
committed
503c63a