X-Git-Url: https://git.ayoreis.com/hackapet/Adafruit_Blinka.git/blobdiff_plain/bf49679028e57296e105c3e50b2cd25abc8dc19b..76ca3e6a3c4c2f2695d96bdb0ee2db66d3f0f32c:/src/busio.py

diff --git a/src/busio.py b/src/busio.py
index 9003bab..73c88ef 100755
--- a/src/busio.py
+++ b/src/busio.py
@@ -7,6 +7,8 @@ See `CircuitPython:busio` in CircuitPython for more details.
 * Author(s): cefn
 """
 
+import threading
+
 from adafruit_blinka import Enum, Lockable, agnostic
 from adafruit_blinka.agnostic import board_id, detector
 import adafruit_platformdetect.board as ap_board
@@ -32,9 +34,11 @@ class I2C(Lockable):
                 break
         else:
             raise NotImplementedError(
-                "No Hardware I2C on (scl,sda)={}\nValid UART ports: {}".format((scl, sda), i2cPorts)
+                "No Hardware I2C on (scl,sda)={}\nValid I2C ports: {}".format((scl, sda), i2cPorts)
             )
 
+        self._lock = threading.RLock()
+
     def deinit(self):
         try:
             del self._i2c
@@ -42,9 +46,11 @@ class I2C(Lockable):
             pass
 
     def __enter__(self):
+        self._lock.acquire()
         return self
 
     def __exit__(self, exc_type, exc_value, traceback):
+        self._lock.release()
         self.deinit()
 
     def scan(self):
@@ -159,6 +165,13 @@ class SPI(Lockable):
         self._spi = None
         self._pinIds = None
 
+    @property
+    def frequency(self):
+        try:
+            return self._spi.frequency
+        except AttributeError:
+            raise NotImplementedError("Frequency attribute not implemented for this platform")
+
     def write(self, buf, start=0, end=None):
         return self._spi.write(buf, start, end)