add freq for FT232H I2C

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

diff --git a/src/busio.py b/src/busio.py
index 230db56f343a6341d92f0785be44ac6f9cfb9dc9..e0118ac8c09314ec04f3b902d462e5d5018c07e9 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
 """
 
 * 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
 from adafruit_blinka import Enum, Lockable, agnostic
 from adafruit_blinka.agnostic import board_id, detector
 import adafruit_platformdetect.board as ap_board


@@ -19,11 +21,13 @@ class I2C(Lockable):
         self.deinit()
         if detector.board.ftdi_ft232h:
             from adafruit_blinka.microcontroller.ft232h.i2c import I2C
         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
             return
         elif detector.board.binho_nova:
             from adafruit_blinka.microcontroller.nova.i2c import I2C

-            self._i2c = I2C()
+        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
             return
         elif detector.board.any_embedded_linux:
             from adafruit_blinka.microcontroller.generic_linux.i2c import I2C as _I2C


@@ -31,14 +35,19 @@ class I2C(Lockable):
             from machine import I2C as _I2C
         from microcontroller.pin import i2cPorts
         for portId, portScl, portSda in i2cPorts:
             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)
             )
 
         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
     def deinit(self):
         try:
             del self._i2c


@@ -46,9 +55,11 @@ 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):


@@ -88,9 +99,9 @@ class SPI(Lockable):
             return
         elif detector.board.binho_nova:
             from adafruit_blinka.microcontroller.nova.spi import SPI as _SPI
             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
+            from adafruit_blinka.microcontroller.nova.pin import SCK, MOSI, MISO

             self._spi = _SPI(clock)
             self._spi = _SPI(clock)

-            #self._pins = (SCK, MOSI, MISO)
+            self._pins = (SCK, MOSI, MISO)

             return
         elif detector.board.any_embedded_linux:
             from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
             return
         elif detector.board.any_embedded_linux:
             from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI


@@ -148,7 +159,7 @@ class SPI(Lockable):
             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.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
+            from adafruit_blinka.microcontroller.nova.pin import Pin

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