platforms/orbtrace_mini: Add I2C.

orbcode · Jun 30, 2021 · eafa0d5 · eafa0d5
1 parent 1a52da8
commit eafa0d5
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Showing 2 changed files with 14 additions and 1 deletion.
diff --git a/orbtrace/platforms/orbtrace_mini.py b/orbtrace/platforms/orbtrace_mini.py
@@ -2,6 +2,8 @@
 from litex.build.lattice import LatticePlatform
 from litex.build.openfpgaloader import OpenFPGALoader
 
+from litex.soc.cores.bitbang import I2CMaster
+
 from ..crg_ecp5 import CRG
 
 from ..serial_led import SerialLedController
@@ -152,6 +154,10 @@ def add_leds(self, soc):
         soc.led_vtref  = soc.serial_led.leds[3]
         soc.led_vtpwr  = soc.serial_led.leds[4]
 
+    def add_platform_specific(self, soc):
+        # I2C
+        soc.submodules.i2c = I2CMaster(self.request('i2c'))
+
     def create_programmer(self):
         return OpenFPGALoader('ecpix5')
 
@@ -163,4 +169,4 @@ def do_finalize(self, fragment):
 
     @classmethod
     def add_arguments(cls, parser):
-        parser.add_argument('--device', choices = ['25F', '45F'], default = '25F', help = 'ECP5 device (default: 25F)')
+        parser.add_argument('--device', choices = ['25F', '45F'], default = '25F', help = 'ECP5 device (default: 25F)')
diff --git a/orbtrace/soc.py b/orbtrace/soc.py
@@ -79,6 +79,9 @@ def __init__(self, platform, sys_clk_freq, **kwargs):
         # Target power
         #self.add_target_power()
 
+        # Platform specific
+        self.add_platform_specific()
+
         # USB
         self.finalize_usb()
 
@@ -415,3 +418,7 @@ def add_wrapper(self):
 
         self.wrapper.connect_domain('sys')
         self.wrapper.connect_domain('sys2x')
+
+    def add_platform_specific(self):
+        if hasattr(self.platform, 'add_platform_specific'):
+            self.platform.add_platform_specific(self)