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Batched screen calib (#557)

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* use new batch write possibility to avoid race condition

* bump kernel
This commit is contained in:
Robbe Derks
2026-04-15 15:37:14 +02:00
committed by GitHub
parent 7b5f00ef1a
commit a652c79bc2
2 changed files with 11 additions and 10 deletions
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19
userspace/usr/comma/screen_calibration.py
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@@ -15,21 +15,22 @@ GAMMA_ADDR = [
def command_mode(mode):
return f"39 01 00 00 0A 00 02 FE {((0b1010 << 4) | mode):02X}"
def send_command(command_str):
def pack_command(command_str):
command_buf = bytes(map(lambda x: int(x, base=16), command_str.strip().split()))
data = struct.pack(f"i{len(command_buf)}s", len(command_buf), command_buf)
with open(COMMAND_FILE, "wb") as f:
f.write(data)
return struct.pack(f"i{len(command_buf)}s", len(command_buf), command_buf)
def set_gamma(gamma):
send_command(command_mode(2))
cmds = [command_mode(2)]
for color_idx in range(3):
for i, val in reversed(list(enumerate(gamma[color_idx]))):
msb, lsb = GAMMA_ADDR[color_idx][i]
send_command(f"39 0F 00 00 0A 00 02 {msb:02X} {(val >> 8) & 0xFF:02X}")
send_command(f"39 {'01' if i % 10 == 0 else '0F'} 00 00 0A 00 02 {lsb:02X} {val & 0xFF:02X}")
send_command(command_mode(0))
cmds.append(f"39 0F 00 00 0A 00 02 {msb:02X} {(val >> 8) & 0xFF:02X}")
cmds.append(f"39 {'01' if i % 10 == 0 else '0F'} 00 00 0A 00 02 {lsb:02X} {val & 0xFF:02X}")
cmds.append(command_mode(0))
data = b"".join(pack_command(c) for c in cmds)
with open(COMMAND_FILE, "wb") as f:
f.write(data)
print("Successfully setup screen calibration")
if __name__ == "__main__":