adafruit-mirror/Adafruit_CircuitPython_USB_Host_Descriptors
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

update dual mouse example to support 8 byte data packets

Browse source
This commit is contained in:
foamyguy 2025-04-03 15:37:59 -05:00
parent be9aa14fa9
commit b18147f894
1 changed files with 19 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
examples/usb_host_descriptors_two_boot_mice.py
View file

@ -78,26 +78,42 @@ for device in usb.core.find(find_all=True):
BUTTONS = ["left", "right", "middle"]
mouse_bufs = []
mouse_read_counts = [0, 0]
for mouse_tg in mouse_tgs:
# Buffer to hold data read from the mouse
# Boot mice have 4 byte reports
mouse_bufs.append(array.array("b", [0] * 4))
def get_mouse_deltas(mouse_index):
if mouse_read_counts[mouse_index] == 4:
delta_x = mouse_bufs[mouse_index][1]
delta_y = mouse_bufs[mouse_index][2]
elif mouse_read_counts[mouse_index] == 8:
delta_x = mouse_bufs[mouse_index][2]
delta_y = mouse_bufs[mouse_index][4]
else:
raise ValueError(
f"Unsupported mouse packet size: {mouse_packet_sizes[mouse_index]}, must be 4 or 8"
)
return delta_x, delta_y
while True:
for mouse_index, mouse in enumerate(mice):
try:
count = mouse.read(
mouse_endpoint_addresses[mouse_index], mouse_bufs[mouse_index], timeout=10
)
mouse_read_counts[mouse_index] = count
except usb.core.USBTimeoutError:
continue
mouse_deltas = get_mouse_deltas(mouse_index)
mouse_tgs[mouse_index].x = max(
0, min(display.width - 1, mouse_tgs[mouse_index].x + mouse_bufs[mouse_index][1])
0, min(display.width - 1, mouse_tgs[mouse_index].x + mouse_deltas[0])
)
mouse_tgs[mouse_index].y = max(
0, min(display.height - 1, mouse_tgs[mouse_index].y + mouse_bufs[mouse_index][2])
0, min(display.height - 1, mouse_tgs[mouse_index].y + mouse_deltas[1])
)
out_str = f"{mouse_tgs[mouse_index].x},{mouse_tgs[mouse_index].y}"