Merge pull request #807 from brentru/force-mcp

[hackapet/Adafruit_Blinka.git] / src / busio.py

diff --git a/src/busio.py b/src/busio.py
index cdce321172ce6f723ed6bfbb2a9e10027afe7599..0a3f52991820fb23edf7188664ac73ade7610946 100644 (file)
--- a/src/busio.py
+++ b/src/busio.py
@@ -51,10 +51,13 @@ class I2C(Lockable):
             self._i2c = _I2C(frequency=frequency)
             return
         if detector.board.microchip_mcp2221:
-            if "BLINKA_FORCEBOARD" not in os.environ:
-                from adafruit_blinka.microcontroller.mcp2221.i2c import I2C as _I2C
-            elif os.environ["BLINKA_FORCEBOARD"] == "MICROCHIP_MCP2221":
+            if (
+                "BLINKA_FORCECHIP" in os.environ
+                and os.environ["BLINKA_FORCEBOARD"] == "MICROCHIP_MCP2221"
+            ):
                 from adafruit_blinka.microcontroller.fake_mcp2221.i2c import I2C as _I2C
+            else:
+                from adafruit_blinka.microcontroller.mcp2221.i2c import I2C as _I2C
             self._i2c = _I2C(frequency=frequency)
             return
         if detector.board.greatfet_one: