Factor out I2C resource.

1 files changed, 10 insertions, 1 deletions

diff --git a/nmigen_boards/resources/interface.py b/nmigen_boards/resources/interface.py
index 7244062..9710ffb 100644
--- a/nmigen_boards/resources/interface.py
+++ b/nmigen_boards/resources/interface.py
@@ -2,7 +2,7 @@ from nmigen.build import *
 
 
 __all__ = [
-    "UARTResource", "IrDAResource", "SPIResource",
+    "UARTResource", "IrDAResource", "SPIResource", "I2CResource",
     "DirectUSBResource", "ULPIResource"
 ]
 
@@ -86,6 +86,15 @@ def SPIResource(*args, cs, clk, copi, cipo, int=None, reset=None,
     return Resource.family(*args, default_name="spi", ios=io)
 
 
+def I2CResource(*args, scl, sda, conn=None, attrs=None):
+    io = []
+    io.append(Subsignal("scl", Pins(scl, dir="io", conn=conn, assert_width=1)))
+    io.append(Subsignal("sda", Pins(sda, dir="io", conn=conn, assert_width=1)))
+    if attrs is not None:
+        io.append(attrs)
+    return Resource.family(*args, default_name="i2c", ios=io)
+
+
 def DirectUSBResource(*args, d_p, d_n, pullup=None, vbus_valid=None,
     conn=None, attrs=None):