--- /dev/null
+from adafruit_blinka.microcontroller.nova import pin
+
+D4 = pin.D4
+D5 = pin.D5
+D6 = pin.D6
+D7 = pin.D7
+C0 = pin.C0
+C1 = pin.C1
+C2 = pin.C2
+C3 = pin.C3
+C4 = pin.C4
+C5 = pin.C5
+C6 = pin.C6
+C7 = pin.C7
+
+SDA = pin.SDA
+SCL = pin.SCL
+
+SCK = pin.SCK
+SCLK = pin.SCLK
+MOSI = pin.MOSI
+MISO = pin.MISO
--- /dev/null
+from adafruit_blinka.microcontroller.nova.pin import Pin
+
+class I2C:
+
+ def __init__(self):
+ # change GPIO controller to I2C
+ from pyftdi.i2c import I2cController
+ self._i2c = I2cController()
+ self._i2c.configure('ftdi:///1')
+ Pin.ft232h_gpio = self._i2c.get_gpio()
+
+ def scan(self):
+ return [addr for addr in range(0x79) if self._i2c.poll(addr)]
+
+ def writeto(self, address, buffer, *, start=0, end=None, stop=True):
+ end = end if end else len(buffer)
+ port = self._i2c.get_port(address)
+ port.write(buffer[start:end], relax=stop)
+
+ def readfrom_into(self, address, buffer, *, start=0, end=None, stop=True):
+ end = end if end else len(buffer)
+ port = self._i2c.get_port(address)
+ result = port.read(len(buffer[start:end]), relax=stop)
+ for i, b in enumerate(result):
+ buffer[start+i] = b
+
+ def writeto_then_readfrom(self, address, buffer_out, buffer_in, *,
+ out_start=0, out_end=None,
+ in_start=0, in_end=None, stop=False):
+ out_end = out_end if out_end else len(buffer_out)
+ in_end = in_end if in_end else len(buffer_in)
+ port = self._i2c.get_port(address)
+ result = port.exchange(buffer_out[out_start:out_end],
+ in_end-in_start,
+ relax=True).tobytes()
+ for i, b in enumerate(result):
+ buffer_in[in_start+i] = b
--- /dev/null
+class Pin:
+ """A basic Pin class for use with FT232H."""
+
+ IN = 0
+ OUT = 1
+ LOW = 0
+ HIGH = 1
+
+ ft232h_gpio = None
+
+ def __init__(self, pin_id=None):
+ # setup GPIO controller if not done yet
+ # use one provided by I2C as default
+ if not Pin.ft232h_gpio:
+ from pyftdi.i2c import I2cController
+ i2c = I2cController()
+ i2c.configure("ftdi:///1")
+ Pin.ft232h_gpio = i2c.get_gpio()
+ # check if pin is valid
+ if pin_id:
+ if Pin.ft232h_gpio.all_pins & 1 << pin_id == 0:
+ raise ValueError("Can not use pin {} as GPIO.".format(pin_id))
+ # ID is just bit position
+ self.id = pin_id
+
+ def init(self, mode=IN, pull=None):
+ if not self.id:
+ raise RuntimeError("Can not init a None type pin.")
+ # FT232H does't have configurable internal pulls?
+ if pull:
+ raise ValueError("Internal pull up/down not currently supported.")
+ pin_mask = Pin.ft232h_gpio.pins | 1 << self.id
+ current = Pin.ft232h_gpio.direction
+ if mode == self.OUT:
+ current |= 1 << self.id
+ else:
+ current &= ~(1 << self.id)
+ Pin.ft232h_gpio.set_direction(pin_mask, current)
+
+ def value(self, val=None):
+ if not self.id:
+ raise RuntimeError("Can not access a None type pin.")
+ current = Pin.ft232h_gpio.read(with_output=True)
+ # read
+ if val is None:
+ return 1 if current & 1 << self.id != 0 else 0
+ # write
+ elif val in (self.LOW, self.HIGH):
+ if val == self.HIGH:
+ current |= 1 << self.id
+ else:
+ current &= ~(1 << self.id)
+ # must mask out any input pins
+ Pin.ft232h_gpio.write(current & Pin.ft232h_gpio.direction)
+ # release the kraken
+ else:
+ raise RuntimeError("Invalid value for pin")
+
+# create pin instances for each pin
+# D0 to D3 are used by I2C/SPI
+D4 = Pin(4)
+D5 = Pin(5)
+D6 = Pin(6)
+D7 = Pin(7)
+C0 = Pin(8)
+C1 = Pin(9)
+C2 = Pin(10)
+C3 = Pin(11)
+C4 = Pin(12)
+C5 = Pin(13)
+C6 = Pin(14)
+C7 = Pin(15)
+# C8 and C9 are not GPIO
+
+# create None type pins for I2C and SPI since they are expected to be defined
+SCL = Pin()
+SDA = Pin()
+SCK = SCLK = Pin()
+MOSI = Pin()
+MISO = Pin()
--- /dev/null
+from adafruit_blinka.microcontroller.nova.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)
+ self._port._cpol = polarity
+ 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
elif board_id == ap_board.FTDI_FT232H:
from adafruit_blinka.board.ftdi_ft232h import *
+elif board_id == ap_board.BINHO_NOVA:
+ from adafruit_blinka.board.binho_nova import *
+
elif "sphinx" in sys.modules:
pass
from adafruit_blinka.microcontroller.nxp_imx8m.pin import *
elif chip_id == ap_chip.FT232H:
from adafruit_blinka.microcontroller.ft232h.pin import *
+elif chip_id == ap_chip.NOVA:
+ from adafruit_blinka.microcontroller.nova.pin import *
else:
raise NotImplementedError("Microcontroller not supported: ", chip_id)
projects / Adafruit_Blinka-hackapet.git / commitdiff