From 84f2130c383ff21188e7d51f507f06de73f239d2 Mon Sep 17 00:00:00 2001
From: Dan Halbert <halbert@halwitz.org>
Date: Thu, 21 Aug 2025 16:17:06 -0400
Subject: [PATCH] lock SPI only when writing

---
 adafruit_dotstar.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/adafruit_dotstar.py b/adafruit_dotstar.py
index 3f8a415..9cca97b 100755
--- a/adafruit_dotstar.py
+++ b/adafruit_dotstar.py
@@ -108,9 +108,9 @@ def __init__(
         self._spi = None
         try:
             self._spi = busio.SPI(clock, MOSI=data)
-            while not self._spi.try_lock():
-                pass
+            self._spi.try_lock()
             self._spi.configure(baudrate=baudrate)
+            self._spi.unlock()
 
         except (NotImplementedError, ValueError):
             self.dpin = digitalio.DigitalInOut(data)
@@ -145,7 +145,6 @@ def deinit(self) -> None:
         self.fill(0)
         self.show()
         if self._spi:
-            self._spi.unlock()
             self._spi.deinit()
         else:
             self.dpin.deinit()
@@ -174,7 +173,9 @@ def n(self) -> int:
 
     def _transmit(self, buffer: ReadableBuffer) -> None:
         if self._spi:
+            self._spi.try_lock()
             self._spi.write(buffer)
+            self._spi.unlock()
         else:
             self._ds_writebytes(buffer)