feat(tg5040): keep device awake while connected as a USB gadget#783
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I tested this on a TrimUI Brick. I do not own any other |
frysee
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Jul 19, 2026
Add an opt-in "Keep awake over USB" setting that prevents screen-off and deep sleep while the device is enumerated as a USB gadget by a host, as distinct from merely charging. Detection reads /sys/class/udc/*/state and treats "configured" as connected (PLAT_isUSBConnected), so it reflects an active data connection rather than power presence. This matters when the battery is full: charging already blocks sleep, but a full battery on USB would otherwise let the device sleep and drop the connection. The state is polled on the existing battery thread into a new pwr.is_usb_connected atomic and, gated by CFG_getKeepAwakeWhenUSB, is factored into both PWR_preventAutosleep() (no screen-off) and the PWR_waitForWake() deep-sleep deferral, mirroring how is_charging is handled. Setting defaults to off and is exposed in Settings under the tg5040-only block. tg5050 and desktop get PLAT_isUSBConnected stubs returning 0. Disclosure: LLMs were used to develop this code.
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apommel
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apommel
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It's compatible
pvaibhav
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Jul 20, 2026
Upstream FN action (LoveRetro#788) and USB keep-awake (LoveRetro#783) APIs require platform definitions that were only added for other platforms. Provide H700 FN stubs (no assignable buttons) and a zeroing PLAT_isUSBConnected so the post-rebase build links again. Document that FN1/FN2/HOME pak actions and USB keep-awake are not supported on H700.
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Jul 26, 2026
… pak fixes New upstream features merged: - Color palettes: 18 bundled palettes + user-loadable palette dir (LoveRetro#787) - FN1/FN2/HOME can now launch user-assigned tool paks (LoveRetro#788) - Keep device awake while connected as USB gadget (LoveRetro#783) - RetroAchievements identification for custom paks and multi-system emulators (LoveRetro#775) - Brick Pro rumble limited to 2.5V (was 3.3V, too strong) - Align Brick/Pro rumble strength Conflict resolutions (C++20 branch vs upstream): - nextui.cpp: kept RAII core::SurfacePtr, took upstream THEME_COLOR7 for preview fill - minput.c: kept GFX_getFonts() and pad-> accessors, took upstream button rendering (ALT_BUTTON_TEXT_COLOR, text_color local, GFX_blitAssetColor, THEME_COLOR2 for sticks) - tg5040 platform.c: accepted conditional MAX_VOLTAGE for Brick Pro; RUMBLE_PATH not needed (branch uses deviceModel->rumble_gpio_path from DeviceDescriptor)
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Add an opt-in "Keep awake over USB" setting that prevents screen-off and deep sleep while the device is enumerated as a USB gadget by a host, as distinct from merely charging.
Detection reads /sys/class/udc/*/state and treats "configured" as connected (PLAT_isUSBConnected), so it reflects an active data connection rather than power presence. This matters when the battery is full: charging already blocks sleep, but a full battery on USB would otherwise let the device sleep and drop the connection.
The state is polled on the existing battery thread into a new pwr.is_usb_connected atomic and, gated by CFG_getKeepAwakeWhenUSB, is factored into both PWR_preventAutosleep() (no screen-off) and the PWR_waitForWake() deep-sleep deferral, mirroring how is_charging is handled.
Setting defaults to off and is exposed in Settings under the tg5040-only block. tg5050 and desktop get PLAT_isUSBConnected stubs returning 0.
Disclosure: LLMs were used to develop this code.