X-Git-Url: https://git.ayoreis.com/hackapet/Adafruit_Blinka.git/blobdiff_plain/a0f81f1931c83c18b0b4647c0ad1b868e02c71e8..51d92753cba10d1af82b81d641ff067378d6eb12:/src/busio.py

diff --git a/src/busio.py b/src/busio.py
index 69cbca0..ad96061 100755
--- a/src/busio.py
+++ b/src/busio.py
@@ -62,6 +62,8 @@ class I2C(Lockable):
                 return self._i2c.writeto(address, memoryview(buffer)[start:end], stop)
         return self._i2c.writeto(address, buffer, stop)
 
+    def writeto_then_readfrom(self, address, buffer_out, buffer_in, out_start=0, out_end=None, in_start=0, in_end=None, stop=False):
+        return self._i2c.write_readinto(address, buffer_out, buffer_in, out_start, out_end, in_start, in_end, stop)
 
 class SPI(Lockable):
     def __init__(self, clock, MOSI=None, MISO=None):
@@ -72,7 +74,9 @@ 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