Add support for FT2232H "microcontroller"

[hackapet/Adafruit_Blinka.git] / src / adafruit_blinka / microcontroller / ft232h / spi.py

diff --git a/src/adafruit_blinka/microcontroller/ft232h/spi.py b/src/adafruit_blinka/microcontroller/ft232h/spi.py
deleted file mode 100644 (file)
index a260e72..0000000
--- a/src/adafruit_blinka/microcontroller/ft232h/spi.py
+++ /dev/null
@@ -1,54 +0,0 @@
-from adafruit_blinka.microcontroller.ft232h.pin import Pin
-
-class SPI:
-    MSB = 0
-
-    def __init__(self):
-        from pyftdi.spi import SpiController
-        self._spi = SpiController(cs_count=1)
-        self._spi.configure('ftdi:///1')
-        self._port = self._spi.get_port(0)
-        self._port.set_frequency(100000)
-        self._port._cpol = 0
-        self._port._cpha = 0
-        # Change GPIO controller to SPI
-        Pin.ft232h_gpio = self._spi.get_gpio()
-
-    def init(self, baudrate=100000, polarity=0, phase=0, bits=8,
-                  firstbit=MSB, sck=None, mosi=None, miso=None):
-        self._port.set_frequency(baudrate)
-        # FTDI device can only support mode 0 and mode 2
-        # due to the limitation of MPSSE engine.
-        # This means CPHA must = 0
-        self._port._cpol = polarity
-        if phase != 0:
-            raise ValueError("Only SPI phase 0 is supported by FT232H.")
-        self._port._cpha = phase
-
-    @property
-    def frequency(self):
-        return self._port.frequency
-
-    def write(self, buf, start=0, end=None):
-        end = end if end else len(buf)
-        chunks, rest = divmod(end - start, self._spi.PAYLOAD_MAX_LENGTH)
-        for i in range(chunks):
-            chunk_start = start + i * self._spi.PAYLOAD_MAX_LENGTH
-            chunk_end = chunk_start + self._spi.PAYLOAD_MAX_LENGTH
-            self._port.write(buf[chunk_start:chunk_end])
-        if rest:
-            self._port.write(buf[-1*rest:])
-
-    def readinto(self, buf, start=0, end=None, write_value=0):
-        end = end if end else len(buf)
-        result = self._port.read(end-start)
-        for i, b in enumerate(result):
-            buf[start+i] = b
-
-    def write_readinto(self, buffer_out, buffer_in,  out_start=0, out_end=None, in_start=0, in_end=None):
-        out_end = out_end if out_end else len(buffer_out)
-        in_end = in_end if in_end else len(buffer_in)
-        result = self._port.exchange(buffer_out[out_start:out_end],
-                                     in_end-in_start, duplex=True)
-        for i, b in enumerate(result):
-            buffer_in[in_start+i] = b