Add support for NVIDIA Jetson NX

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

diff --git a/src/busio.py b/src/busio.py
index 8bb888f7e2e2c333d17ebfbcff957521a24bff0f..649ba86f3bda557720c339d9a373f7f72184fb1f 100755 (executable)
--- a/src/busio.py
+++ b/src/busio.py
@@ -7,9 +7,11 @@ See `CircuitPython:busio` in CircuitPython for more details.
 * Author(s): cefn
 """
 
 * Author(s): cefn
 """
 

+import threading
+

 from adafruit_blinka import Enum, Lockable, agnostic
 from adafruit_blinka.agnostic import board_id, detector
 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

 
 class I2C(Lockable):
     def __init__(self, scl, sda, frequency=400000):
 
 class I2C(Lockable):
     def __init__(self, scl, sda, frequency=400000):


@@ -17,20 +19,37 @@ class I2C(Lockable):
 
     def init(self, scl, sda, frequency):
         self.deinit()
 
     def init(self, scl, sda, frequency):
         self.deinit()

-        if detector.board.any_linux:
+        if detector.board.ftdi_ft232h:
+            from adafruit_blinka.microcontroller.ft232h.i2c import 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
         else:
             from machine import I2C as _I2C
         from microcontroller.pin import i2cPorts
         for portId, portScl, portSda in i2cPorts:
             from adafruit_blinka.microcontroller.generic_linux.i2c import I2C as _I2C
         else:
             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:
         else:

-            raise NotImplementedError(
-                "No Hardware I2C on (scl,sda)={}\nValid UART ports: {}".format((scl, sda), i2cPorts)
+            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
     def deinit(self):
         try:
             del self._i2c


@@ -38,9 +57,11 @@ class I2C(Lockable):
             pass
 
     def __enter__(self):
             pass
 
     def __enter__(self):

+        self._lock.acquire()

         return self
 
     def __exit__(self, exc_type, exc_value, traceback):
         return self
 
     def __exit__(self, exc_type, exc_value, traceback):

+        self._lock.release()

         self.deinit()
 
     def scan(self):
         self.deinit()
 
     def scan(self):


@@ -72,7 +93,19 @@ class I2C(Lockable):
 class SPI(Lockable):
     def __init__(self, clock, MOSI=None, MISO=None):
         self.deinit()
 class SPI(Lockable):
     def __init__(self, clock, MOSI=None, MISO=None):
         self.deinit()

-        if detector.board.any_linux:
+        if detector.board.ftdi_ft232h:
+            from adafruit_blinka.microcontroller.ft232h.spi import SPI as _SPI
+            from adafruit_blinka.microcontroller.ft232h.pin import SCK, MOSI, MISO
+            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:
             from machine import SPI as _SPI
             from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
         else:
             from machine import SPI as _SPI


@@ -85,20 +118,60 @@ class SPI(Lockable):
                 self._pins = (portSck, portMosi, portMiso)
                 break
         else:
                 self._pins = (portSck, portMosi, portMiso)
                 break
         else:

-            raise NotImplementedError(
+            raise ValueError(

                 "No Hardware SPI on (SCLK, MOSI, MISO)={}\nValid SPI ports:{}".
                 format((clock, MOSI, MISO), spiPorts))
 
     def configure(self, baudrate=100000, polarity=0, phase=0, bits=8):
                 "No Hardware SPI on (SCLK, MOSI, MISO)={}\nValid SPI ports:{}".
                 format((clock, MOSI, MISO), spiPorts))
 
     def configure(self, baudrate=100000, polarity=0, phase=0, bits=8):

-        if detector.board.any_raspberry_pi:
+        if detector.board.any_raspberry_pi or detector.board.any_raspberry_pi_40_pin:

             from adafruit_blinka.microcontroller.bcm283x.pin import Pin
             from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
             from adafruit_blinka.microcontroller.bcm283x.pin import Pin
             from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI

-        elif board_id == ap_board.BEAGLEBONE_BLACK:
+        elif detector.board.any_beaglebone:

             from adafruit_blinka.microcontroller.am335x.pin import Pin
             from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
             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:
-            from adafruit_blinka.microcontroller.allwinner_h3.pin import Pin
+        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
+            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
+            from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
+        elif board_id == ap_board.CORAL_EDGE_TPU_DEV:
+            from adafruit_blinka.microcontroller.nxp_imx8m.pin import Pin
+            from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
+        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.DRAGONBOARD_410C:
+            from adafruit_blinka.microcontroller.snapdragon.apq8016.pin import Pin
+            from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
+        elif board_id == ap_board.JETSON_NANO:
+            from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
+            from adafruit_blinka.microcontroller.tegra.t210.pin import Pin
+        elif board_id == ap_board.JETSON_TX1:
+            from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
+            from adafruit_blinka.microcontroller.tegra.t210.pin import Pin
+        elif board_id == ap_board.JETSON_TX2:

             from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
             from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI

+            from adafruit_blinka.microcontroller.tegra.t186.pin import Pin
+        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
+

         else:
             from machine import SPI as _SPI
             from machine import Pin
         else:
             from machine import SPI as _SPI
             from machine import Pin


@@ -122,11 +195,18 @@ class SPI(Lockable):
         self._spi = None
         self._pinIds = None
 
         self._spi = None
         self._pinIds = None
 

+    @property
+    def frequency(self):
+        try:
+            return self._spi.frequency
+        except AttributeError:
+            raise NotImplementedError("Frequency attribute not implemented for this platform")
+

     def write(self, buf, start=0, end=None):
         return self._spi.write(buf, start, end)
 
     def readinto(self, buf, start=0, end=None, write_value=0):
     def write(self, buf, start=0, end=None):
         return self._spi.write(buf, start, end)
 
     def readinto(self, buf, start=0, end=None, write_value=0):

-        return self._spi.readinto(buf, start, end)
+        return self._spi.readinto(buf, start, end, write_value=write_value)

 
     def write_readinto(self, buffer_out, buffer_in,  out_start=0, out_end=None, in_start=0, in_end=None):
         return self._spi.write_readinto(buffer_out, buffer_in, out_start, out_end, in_start, in_end)
 
     def write_readinto(self, buffer_out, buffer_in,  out_start=0, out_end=None, in_start=0, in_end=None):
         return self._spi.write_readinto(buffer_out, buffer_in, out_start, out_end, in_start, in_end)


@@ -149,8 +229,17 @@ class UART(Lockable):
                  timeout=1000,
                  receiver_buffer_size=64,
                  flow=None):
                  timeout=1000,
                  receiver_buffer_size=64,
                  flow=None):

-        from machine import UART as _UART
-        from microcontroller.pin import uartPorts
+        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
+
+        if detector.board.binho_nova:
+            from adafruit_blinka.microcontroller.nova.pin import uartPorts
+        else:
+            from microcontroller.pin import uartPorts

 
         self.baudrate = baudrate
 
 
         self.baudrate = baudrate
 


@@ -183,11 +272,13 @@ class UART(Lockable):
                 )
                 break
         else:
                 )
                 break
         else:

-            raise NotImplementedError(
+            raise ValueError(

                 "No Hardware UART on (tx,rx)={}\nValid UART ports: {}".format((tx, rx), uartPorts)
             )
 
     def deinit(self):
                 "No Hardware UART on (tx,rx)={}\nValid UART ports: {}".format((tx, rx), uartPorts)
             )
 
     def deinit(self):

+        if detector.board.binho_nova:
+            self._uart.deinit()

         self._uart = None
 
     def read(self, nbytes=None):
         self._uart = None
 
     def read(self, nbytes=None):