Merge pull request #27 from ladyada/master

dont forget set frequency (as we dont use busdevice)

Author: sommersoft

adafruit_epd/epd.py

@@ -71,6 +71,11 @@ def __init__(self, width, height, spi, cs_pin, dc_pin, sramcs_pin, rst_pin, busy
 
         # SPI interface (required)
         self.spi_device = spi
+        while not self.spi_device.try_lock():
+            pass
+        self.spi_device.configure(baudrate=1000000) # 1 Mhz
+        self.spi_device.unlock()
+
         self._spibuf = bytearray(1)
         self._single_byte_tx = False