Merge pull request #273 from makermelissa/onion-omega

[hackapet/Adafruit_Blinka.git] / src / busio.py

diff --git a/src/busio.py b/src/busio.py
index ddf290d979af53a9b5563c19e7ed428d12fd9044..9828143564b7764a3b0bcf86030489b8df326d34 100755 (executable)
--- a/src/busio.py
+++ b/src/busio.py
@@ -7,9 +7,12 @@ See `CircuitPython:busio` in CircuitPython for more details.
 * Author(s): cefn
 """
 
+import threading
+
 from adafruit_blinka import Enum, Lockable, agnostic
 from adafruit_blinka.agnostic import board_id, detector
-import adafruit_platformdetect.board as ap_board
+import adafruit_platformdetect.constants.boards as ap_board
+import adafruit_platformdetect.constants.chips as ap_chip
 
 class I2C(Lockable):
     def __init__(self, scl, sda, frequency=400000):
@@ -19,7 +22,15 @@ class I2C(Lockable):
         self.deinit()
         if detector.board.ftdi_ft232h:
             from adafruit_blinka.microcontroller.ft232h.i2c import I2C
-            self._i2c = I2C()
+            self._i2c = I2C(frequency=frequency)
+            return
+        elif detector.board.binho_nova:
+            from adafruit_blinka.microcontroller.nova.i2c import I2C
+            self._i2c = I2C(frequency=frequency)
+            return
+        elif detector.board.microchip_mcp2221:
+            from adafruit_blinka.microcontroller.mcp2221.i2c import I2C
+            self._i2c = I2C(frequency=frequency)
             return
         elif detector.board.any_embedded_linux:
             from adafruit_blinka.microcontroller.generic_linux.i2c import I2C as _I2C
@@ -27,14 +38,19 @@ class I2C(Lockable):
             from machine import I2C as _I2C
         from microcontroller.pin import i2cPorts
         for portId, portScl, portSda in i2cPorts:
-            if scl == portScl and sda == portSda:
-                self._i2c = _I2C(portId, mode=_I2C.MASTER, baudrate=frequency)
-                break
+            try:
+                if scl == portScl and sda == portSda:
+                    self._i2c = _I2C(portId, mode=_I2C.MASTER, baudrate=frequency)
+                    break
+            except RuntimeError:
+                pass
         else:
             raise ValueError(
                 "No Hardware I2C on (scl,sda)={}\nValid I2C ports: {}".format((scl, sda), i2cPorts)
             )
 
+        self._lock = threading.RLock()
+
     def deinit(self):
         try:
             del self._i2c
@@ -42,16 +58,18 @@ class I2C(Lockable):
             pass
 
     def __enter__(self):
+        self._lock.acquire()
         return self
 
     def __exit__(self, exc_type, exc_value, traceback):
+        self._lock.release()
         self.deinit()
 
     def scan(self):
         return self._i2c.scan()
 
     def readfrom_into(self, address, buffer, *, start=0, end=None):
-        if start is not 0 or end is not None:
+        if start != 0 or end is not None:
             if end is None:
                 end = len(buffer)
             buffer = memoryview(buffer)[start:end]
@@ -61,7 +79,7 @@ class I2C(Lockable):
     def writeto(self, address, buffer, *, start=0, end=None, stop=True):
         if isinstance(buffer, str):
             buffer = bytes([ord(x) for x in buffer])
-        if start is not 0 or end is not None:
+        if start != 0 or end is not None:
             if end is None:
                 return self._i2c.writeto(address, memoryview(buffer)[start:], stop=stop)
             else:
@@ -82,6 +100,12 @@ class SPI(Lockable):
             self._spi = _SPI()
             self._pins = (SCK, MOSI, MISO)
             return
+        elif detector.board.binho_nova:
+            from adafruit_blinka.microcontroller.nova.spi import SPI as _SPI
+            from adafruit_blinka.microcontroller.nova.pin import SCK, MOSI, MISO
+            self._spi = _SPI(clock)
+            self._pins = (SCK, MOSI, MISO)
+            return
         elif detector.board.any_embedded_linux:
             from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
         else:
@@ -106,8 +130,8 @@ class SPI(Lockable):
         elif detector.board.any_beaglebone:
             from adafruit_blinka.microcontroller.am335x.pin import Pin
             from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
-        elif board_id == ap_board.ORANGE_PI_PC or board_id == ap_board.ORANGE_PI_R1 or board_id == ap_board.ORANGE_PI_ZERO:
-            from adafruit_blinka.microcontroller.allwinner_h3.pin import Pin
+        elif detector.board.any_orange_pi and detector.chip.id == ap_chip.SUN8I:
+            from adafruit_blinka.microcontroller.allwinner.h3.pin import Pin
             from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
         elif board_id == ap_board.GIANT_BOARD:
             from adafruit_blinka.microcontroller.sama5.pin import Pin
@@ -118,6 +142,9 @@ class SPI(Lockable):
         elif board_id == ap_board.ODROID_C2:
             from adafruit_blinka.microcontroller.amlogic.s905.pin import Pin
             from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
+        elif board_id == ap_board.ODROID_C4:
+            from adafruit_blinka.microcontroller.amlogic.s905x3.pin import Pin
+            from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
         elif board_id == ap_board.DRAGONBOARD_410C:
             from adafruit_blinka.microcontroller.snapdragon.apq8016.pin import Pin
             from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
@@ -133,9 +160,27 @@ class SPI(Lockable):
         elif board_id == ap_board.JETSON_XAVIER:
             from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
             from adafruit_blinka.microcontroller.tegra.t194.pin import Pin
+        elif board_id == ap_board.JETSON_NX:
+            from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
+            from adafruit_blinka.microcontroller.tegra.t194.pin import Pin
+        elif detector.board.SIFIVE_UNLEASHED:
+            from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
+            from adafruit_blinka.microcontroller.hfu540.pin import Pin
         elif detector.board.ftdi_ft232h:
             from adafruit_blinka.microcontroller.ft232h.spi import SPI as _SPI
             from adafruit_blinka.microcontroller.ft232h.pin import Pin
+        elif detector.board.binho_nova:
+            from adafruit_blinka.microcontroller.nova.spi import SPI as _SPI
+            from adafruit_blinka.microcontroller.nova.pin import Pin
+        elif board_id == ap_board.PINE64 or board_id == ap_board.PINEBOOK or board_id == ap_board.PINEPHONE:
+            from adafruit_blinka.microcontroller.allwinner.a64.pin import Pin
+            from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
+        elif board_id == ap_board.CLOCKWORK_CPI3:
+            from adafruit_blinka.microcontroller.allwinner.a33.pin import Pin
+            from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
+        elif board_id == ap_board.ONION_OMEGA2:
+            from adafruit_blinka.microcontroller.mips24kec.pin import Pin
+            from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
         else:
             from machine import SPI as _SPI
             from machine import Pin
@@ -195,9 +240,15 @@ class UART(Lockable):
                  flow=None):
         if detector.board.any_embedded_linux:
             raise RuntimeError('busio.UART not supported on this platform. Please use pyserial instead.')
+        elif detector.board.binho_nova:
+            from adafruit_blinka.microcontroller.nova.uart import UART as _UART
         else:
             from machine import UART as _UART
-        from microcontroller.pin import uartPorts
+
+        if detector.board.binho_nova:
+            from adafruit_blinka.microcontroller.nova.pin import uartPorts
+        else:
+            from microcontroller.pin import uartPorts
 
         self.baudrate = baudrate
 
@@ -235,6 +286,8 @@ class UART(Lockable):
             )
 
     def deinit(self):
+        if detector.board.binho_nova:
+            self._uart.deinit()
         self._uart = None
 
     def read(self, nbytes=None):