Fix for support the raspberrypi kernel change on spi-max-frequency (see

raspberrypi/linux#2165 and piface/pifacecad/issues/24#issuecomment-340642247) since kernel 4.9.43
DanielChesters · Nov 1, 2017 · b54d84e · b54d84e
1 parent 546b0b1
commit b54d84e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/pifacecommon/spi.py b/pifacecommon/spi.py
@@ -65,7 +65,8 @@ def spisend(self, bytes_to_send):
         transfer = spi_ioc_transfer(
             tx_buf=ctypes.addressof(wbuffer),
             rx_buf=ctypes.addressof(rbuffer),
-            len=ctypes.sizeof(wbuffer)
+            len=ctypes.sizeof(wbuffer),
+            speed_hz=ctypes.c_uint32(100000)
         )
 
         if self.spi_callback is not None: