Add uart interface

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

diff --git a/src/busio.py b/src/busio.py
index 9702848a841246889af28d575e41db6baa51861a..30c6936d50ed89a5d075bab5cb37ef24c8249b5b 100755 (executable)
--- a/src/busio.py
+++ b/src/busio.py
@@ -7,6 +7,8 @@ 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
@@ -21,6 +23,10 @@ class I2C(Lockable):
             from adafruit_blinka.microcontroller.ft232h.i2c import I2C
             self._i2c = I2C()
             return
+        elif detector.board.binho_nova:
+            from adafruit_blinka.microcontroller.nova.i2c import I2C
+            self._i2c = I2C()
+            return
         elif detector.board.any_embedded_linux:
             from adafruit_blinka.microcontroller.generic_linux.i2c import I2C as _I2C
         else:
@@ -31,10 +37,12 @@ class I2C(Lockable):
                 self._i2c = _I2C(portId, mode=_I2C.MASTER, baudrate=frequency)
                 break
         else:
-            raise NotImplementedError(
+            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
@@ -42,9 +50,11 @@ 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):
@@ -82,6 +92,12 @@ 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:
@@ -95,7 +111,7 @@ class SPI(Lockable):
                 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))
 
@@ -136,6 +152,9 @@ class SPI(Lockable):
         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
         else:
             from machine import SPI as _SPI
             from machine import Pin
@@ -195,9 +214,15 @@ 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
 
@@ -230,11 +255,13 @@ class UART(Lockable):
                 )
                 break
         else:
-            raise NotImplementedError(
+            raise ValueError(
                 "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):