X-Git-Url: https://git.ayoreis.com/Adafruit_Blinka-hackapet.git/blobdiff_plain/bb9dd9909c672798b9d69c8e3689b2e443c8d936..a65d8d4305b542bfba8b6942c94c789f258fcf88:/src/adafruit_blinka/microcontroller/bcm2711/pin.py

diff --git a/src/adafruit_blinka/microcontroller/bcm2711/pin.py b/src/adafruit_blinka/microcontroller/bcm2711/pin.py
new file mode 100644
index 0000000..7fe5996
--- /dev/null
+++ b/src/adafruit_blinka/microcontroller/bcm2711/pin.py
@@ -0,0 +1,161 @@
+"""Broadcom BCM283x pin names"""
+import RPi.GPIO as GPIO
+from adafruit_blinka.agnostic import detector
+
+GPIO.setmode(GPIO.BCM)  # Use BCM pins D4 = GPIO #4
+GPIO.setwarnings(False)  # shh!
+
+
+class Pin:
+    """Pins dont exist in CPython so...lets make our own!"""
+
+    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, bcm_number):
+        self.id = bcm_number
+
+    def __repr__(self):
+        return str(self.id)
+
+    def __eq__(self, other):
+        return self.id == other
+
+    def init(self, mode=IN, pull=None):
+        """Initialize the Pin"""
+        if mode is not 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 is not 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):
+        """Set or return the Pin Value"""
+        if val is not 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")
+            return None
+        return GPIO.input(self.id)
+
+
+# Pi 1B rev1 only?
+D0 = Pin(0)
+D1 = Pin(1)
+
+D2 = Pin(2)
+SDA = Pin(2)
+D3 = Pin(3)
+SCL = Pin(3)
+
+D4 = Pin(4)
+D5 = Pin(5)
+D6 = Pin(6)
+
+D7 = Pin(7)
+CE1 = Pin(7)
+D8 = Pin(8)
+CE0 = Pin(8)
+D9 = Pin(9)
+MISO = Pin(9)
+D10 = Pin(10)
+MOSI = Pin(10)
+D11 = Pin(11)
+SCLK = Pin(11)  # Raspberry Pi naming
+SCK = Pin(11)  # CircuitPython naming
+
+D12 = Pin(12)
+D13 = Pin(13)
+
+D14 = Pin(14)
+TXD = Pin(14)
+D15 = Pin(15)
+RXD = Pin(15)
+
+D16 = Pin(16)
+D17 = Pin(17)
+D18 = Pin(18)
+D19 = Pin(19)
+MISO_1 = Pin(19)
+D20 = Pin(20)
+MOSI_1 = Pin(20)
+D21 = Pin(21)
+SCLK_1 = Pin(21)
+SCK_1 = Pin(21)
+D22 = Pin(22)
+D23 = Pin(23)
+D24 = Pin(24)
+D25 = Pin(25)
+D26 = Pin(26)
+D27 = Pin(27)
+D28 = Pin(28)
+D29 = Pin(29)
+D30 = Pin(30)
+D31 = Pin(31)
+D32 = Pin(32)
+D33 = Pin(33)
+D34 = Pin(34)
+D35 = Pin(35)
+D36 = Pin(36)
+D37 = Pin(37)
+D38 = Pin(38)
+D39 = Pin(39)
+D40 = Pin(40)
+MISO_2 = Pin(40)
+D41 = Pin(41)
+MOSI_2 = Pin(41)
+D42 = Pin(42)
+SCLK_2 = Pin(42)
+SCK_2 = Pin(43)
+D43 = Pin(43)
+D44 = Pin(44)
+D45 = Pin(45)
+
+# ordered as spiId, sckId, mosiId, misoId
+spiPorts = (
+    (0, SCLK, MOSI, MISO),
+    (6, SCLK_1, MOSI_1, MISO_1),
+    (2, SCLK_2, MOSI_2, MISO_2),
+    (3, D3, D2, D1),
+    (4, D7, D6, D5),
+    (5, D15, D14, D13),
+)
+
+# ordered as uartId, txId, rxId
+uartPorts = ((1, TXD, RXD),)
+
+# These are the known hardware I2C ports / pins.
+# For software I2C ports created with the i2c-gpio overlay, see:
+#     https://github.com/adafruit/Adafruit_Python_Extended_Bus
+i2cPorts = (
+    (1, SCL, SDA),
+    (0, D1, D0),  # both pi 1 and pi 2 i2c ports!
+    (10, D45, D44),  # internal i2c bus for the CM4
+)