From: ladyada <limor@ladyada.net>
Date: Fri, 17 Aug 2018 15:23:11 +0000 (-0400)
Subject: fix for https://github.com/adafruit/Adafruit_Blinka/issues/21
X-Git-Tag: 0.2.1^2
X-Git-Url: https://git.ayoreis.com/Adafruit_Blinka-hackapet.git/commitdiff_plain/411ec4275644674c4e8a00865e29ae3ddf53590a

fix for https://github.com/adafruit/Adafruit_Blinka/issues/21
---

diff --git a/src/busio.py b/src/busio.py
index 69cbca0..069e9be 100755
--- a/src/busio.py
+++ b/src/busio.py
@@ -72,7 +72,9 @@ class SPI(Lockable):
             from machine import SPI as _SPI
         from microcontroller.pin import spiPorts
         for portId, portSck, portMosi, portMiso in spiPorts:
-            if clock == portSck and MOSI == portMosi and MISO == portMiso:
+            if ((clock == portSck) and                   # Clock is required!
+                (MOSI == portMosi or MOSI == None) and   # But can do with just output
+                (MISO == portMiso or MISO == None)):      # Or just input
                 self._spi = _SPI(portId)
                 self._pins = (portSck, portMosi, portMiso)
                 break