Arrive/AXIO-TESTS
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Add knight rider LED effect via STM32 USB companion IC

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This commit is contained in:
David Rice
2026-06-15 08:44:40 +02:00
parent ed6e8ec107
commit a91b95a48d
1 changed files with 23 additions and 6 deletions
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29
arrive_audio_ui.py
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@@ -24,8 +24,8 @@ except ImportError:
_HAS_USB = False
# ── STM32 companion USB IDs — update after running lsusb ─────────────────────
_STM32_VID = None # e.g. 0x0483
_STM32_PID = None # e.g. 0x5740
_STM32_VID = 0x2f8f # Flowbird Axio4 Companion
_STM32_PID = 0x0003
# ── Force framebuffer QPA before any Qt import ────────────────────────────────
if 'DISPLAY' not in os.environ and 'QT_QPA_PLATFORM' not in os.environ:
@@ -336,10 +336,22 @@ class LedController:
if _HAS_USB and _STM32_VID:
try:
self._dev = usb.core.find(idVendor=_STM32_VID, idProduct=_STM32_PID)
if self._dev:
self._dev.set_configuration()
except Exception:
self._dev = None
if self._dev:
try:
self._dev.set_configuration()
except Exception:
pass # already configured by kernel driver
try:
if self._dev.is_kernel_driver_active(1):
self._dev.detach_kernel_driver(1)
except Exception:
pass
try:
usb.util.claim_interface(self._dev, 1)
except Exception:
pass
# ── Public ────────────────────────────────────────────────────────────────
@@ -354,6 +366,10 @@ class LedController:
self._running = False
if self._dev:
self._set_brightness(self.STRING_MAIN, 0)
try:
usb.util.release_interface(self._dev, 1)
except Exception:
pass
# ── USB helpers ───────────────────────────────────────────────────────────
@@ -391,9 +407,10 @@ class LedController:
# ── Knight rider loop ─────────────────────────────────────────────────────
def _knight_rider(self):
STEPS = 20 # steps per half-cycle
STEP_MS = 0.03 # 30 ms per step → ~600 ms fade up, ~600 ms fade down
STEPS = 30 # steps per half-cycle
STEP_MS = 0.05 # 50 ms per step → ~1.5 s fade up, ~1.5 s fade down
self._set_brightness(self.STRING_MAIN, 255)
while self._running:
# Fade purple → pink
for i in range(STEPS):