X-Git-Url: https://git.ayoreis.com/Adafruit_Blinka-hackapet.git/blobdiff_plain/3f017a27633d001cdb30d6e36bfce3baea3ab52d..40b64d58a1a537ccc55e1c45fe6804b495c6e055:/src/adafruit_blinka/microcontroller/am335x/pin.py

diff --git a/src/adafruit_blinka/microcontroller/am335x/pin.py b/src/adafruit_blinka/microcontroller/am335x/pin.py
new file mode 100644
index 0000000..24ae0c1
--- /dev/null
+++ b/src/adafruit_blinka/microcontroller/am335x/pin.py
@@ -0,0 +1,198 @@
+import Adafruit_BBIO.GPIO as GPIO
+
+# Pins dont exist in CPython so...lets make our own!
+class Pin:
+    IN = 0
+    OUT = 1
+    LOW = 0
+    HIGH = 1
+    PULL_NONE = 0
+    PULL_UP = 1
+    PULL_DOWN = 2
+    
+    id = None
+    _value = LOW
+    _mode = IN
+    
+    def __init__(self, pin_name):
+        self.id = pin_name
+
+    def __repr__(self):
+        return str(self.id)
+
+    def __eq__(self, other):
+        return self.id == other
+
+    def init(self, mode=IN, pull=None):
+        if mode != None:
+            if mode == self.IN:
+                self._mode = self.IN
+                GPIO.setup(self.id, GPIO.IN)
+            elif mode == self.OUT:
+                self._mode = self.OUT
+                GPIO.setup(self.id, GPIO.OUT)
+            else:
+                raise RuntimeError("Invalid mode for pin: %s" % self.id)
+        if pull != None:
+            if self._mode != self.IN:
+                raise RuntimeError("Cannot set pull resistor on output")
+            if pull == self.PULL_UP:
+                GPIO.setup(self.id, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+            elif pull == self.PULL_DOWN:
+                GPIO.setup(self.id, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
+            else:
+                raise RuntimeError("Invalid pull for pin: %s" % self.id)       
+
+    def value(self, val=None):
+        if val != None:
+            if val == self.LOW:
+                self._value = val
+                GPIO.output(self.id, val)
+            elif val == self.HIGH:
+                self._value = val
+                GPIO.output(self.id, val)
+            else:
+                raise RuntimeError("Invalid value for pin")
+        else:
+            return GPIO.input(self.id)
+
+P8_3 = Pin('P8_3')
+P8_4 = Pin('P8_4')
+P8_5 = Pin('P8_5')
+P8_6 = Pin('P8_6')
+P8_7 = Pin('P8_7')
+P8_8 = Pin('P8_8')
+P8_9 = Pin('P8_9')
+P8_10 = Pin('P8_10')
+P8_11 = Pin('P8_11')
+P8_12 = Pin('P8_12')
+P8_13 = Pin('P8_13')
+P8_14 = Pin('P8_14')
+P8_15 = Pin('P8_15')
+P8_16 = Pin('P8_16')
+P8_17 = Pin('P8_17')
+P8_18 = Pin('P8_18')
+P8_19 = Pin('P8_19')
+P8_20 = Pin('P8_20')
+P8_21 = Pin('P8_21')
+P8_22 = Pin('P8_22')
+P8_23 = Pin('P8_23')
+P8_24 = Pin('P8_24')
+P8_25 = Pin('P8_25')
+P8_26 = Pin('P8_26')
+P8_27 = Pin('P8_27')
+P8_28 = Pin('P8_28')
+P8_29 = Pin('P8_29')
+P8_30 = Pin('P8_30')
+P8_31 = Pin('P8_31')
+P8_32 = Pin('P8_32')
+P8_33 = Pin('P8_33')
+P8_34 = Pin('P8_34')
+P8_35 = Pin('P8_35')
+P8_36 = Pin('P8_36')
+P8_37 = Pin('P8_37')
+P8_38 = Pin('P8_38')
+P8_39 = Pin('P8_39')
+P8_40 = Pin('P8_40')
+P8_41 = Pin('P8_41')
+P8_42 = Pin('P8_42')
+P8_43 = Pin('P8_43')
+P8_44 = Pin('P8_44')
+P8_45 = Pin('P8_45')
+P8_46 = Pin('P8_46')
+P9_11 = Pin('P9_11')
+P9_12 = Pin('P9_12')
+P9_13 = Pin('P9_13')
+P9_14 = Pin('P9_14')
+P9_15 = Pin('P9_15')
+P9_16 = Pin('P9_16')
+P9_17 = Pin('P9_17')
+P9_18 = Pin('P9_18')
+P9_19 = Pin('P9_19')
+P9_20 = Pin('P9_20')
+P9_21 = Pin('P9_21')
+P9_22 = Pin('P9_22')
+P9_23 = Pin('P9_23')
+P9_24 = Pin('P9_24')
+P9_25 = Pin('P9_25')
+P9_26 = Pin('P9_26')
+P9_27 = Pin('P9_27')
+P9_28 = Pin('P9_28')
+P9_29 = Pin('P9_29')
+P9_30 = Pin('P9_30')
+P9_31 = Pin('P9_31')
+P9_41 = Pin('P9_41')
+P9_42 = Pin('P9_42')
+
+USR0 = Pin('USR0')
+USR1 = Pin('USR1')
+USR2 = Pin('USR2')
+USR3 = Pin('USR3')
+
+SCL = Pin('P9_19')
+SDA = Pin('P9_20')
+
+# Refer to header default pin modes
+# http://beagleboard.org/static/images/cape-headers.png
+#
+# P9_17 (SPI0_CSO => CE0) enables peripheral device
+# P9_18 (SPI0_D1 => MOSI) outputs data to peripheral device
+# P9_21 (SPIO_DO => MISO) receives data from peripheral device
+# P9_22 (SPI0_SCLK => SCLK) outputs clock signal
+# 
+# Use config-pin to set pin mode for SPI pins
+# https://github.com/beagleboard/bb.org-overlays/tree/master/tools/beaglebone-universal-io
+# config-pin p9.17 spi_cs
+# config-pin p9.18 spi
+# config-pin p9.21 spi
+# config-pin p9.22 spi_sclk
+#
+CE0 = Pin('P9_17')
+MOSI = Pin('P9_18')
+MISO = Pin('P9_21')
+SCLK = Pin('P9_22')
+#CircuitPython naming convention for SPI Clock
+SCK = Pin('P9_22')
+
+# Pins for SPI1
+# refer to:
+# http://beagleboard.org/static/images/cape-headers-spi.png
+#
+# CE1 P9.28 SPI1_CS0
+# MISO_1 P9.29 SPI1_D0
+# MOSI_1 P9.30 SPI1_D1
+# SCLK_1 P9.31 SPI_SCLK
+#
+# SPI1 conflicts with HDMI Audio (McASP)
+#
+# Refer to:
+# https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Overlays
+#
+# To Disable HDMI AUDIO, uncomment this line in /boot/uEnv.txt:
+# disable_uboot_overlay_audio=1
+#
+# Set pin modes for SPI1 with:
+#
+# config-pin p9.28 spi1_cs
+# config-pin p9.29 spi1
+# config-pin p9.30 spi1
+# config-pin p9.31 spi_sclk
+CE1 = Pin('P9_28')
+MOSI_1 = Pin('P9_29')
+MISO_1 = Pin('P9_30')
+SCLK_1 = Pin('P9_31')
+#CircuitPython naming convention for SPI Clock
+SCK_1 = Pin('P9_31')
+
+# ordered as spiId, sckId, mosiId, misoId
+spiPorts = ((0, SCLK, MOSI, MISO), (1, SCLK_1, MOSI_1, MISO_1))
+
+# ordered as uartId, txId, rxId
+uartPorts = (
+    (),
+)
+
+i2cPorts = (
+    (2, SCL, SDA),
+)
+