Workaround for TT07 CB error: CTRL_SEL_nRST/CTRL_SEL_INC pins swapped

Author: urish

src/ttboard/demoboard.py

@@ -18,6 +18,7 @@
 import ttboard.util.time as time
 from ttboard.globals import Globals
 from ttboard.mode import RPMode
+from ttboard.pins.gpio_map import GPIOMapTT06
 from ttboard.pins.pins import Pins
 from ttboard.project_mux import Design
 from ttboard.config.user_config import UserConfig
@@ -139,6 +140,10 @@ def __init__(self,
             setattr(self, p, getattr(self.pins, p))
 
         self.shuttle = Globals.project_mux(self.user_config.force_shuttle)
+        if self.shuttle.run == 'tt07':
+            pins_mode = self.pins.mode
+            GPIOMapTT06.tt07_cb_fix = True
+            self.pins.mode = pins_mode # force re-init of pins to apply new pin map
 
         # config
         self.apply_configs = apply_user_config

src/ttboard/pins/gpio_map.py

@@ -272,6 +272,9 @@ class GPIOMapTT06(GPIOMapBase):
     UIO6 = 27
     UIO7 = 28
     RPIO29 = 29
+
+    # Enable a workaround for a PCB error in TT07 carrier board, which swapped the ctrl_sel_inc and ctrl_sel_nrst lines:
+    tt07_cb_fix = False
 
     @classmethod 
     def project_clock(cls):
@@ -304,7 +307,7 @@ def always_outputs(cls):
     @classmethod 
     def all(cls):
         retDict = cls.all_common()
-        #retDict = GPIOMapBase.all(cls)
+
         retDict.update({
             'nprojectrst': cls.PROJECT_nRST,
             'cinc': cls.CTRL_SEL_INC,
@@ -315,6 +318,10 @@ def all(cls):
             'uo_out2': cls.UO_OUT2,
             'uo_out3': cls.UO_OUT3
         })
+
+        if cls.tt07_cb_fix:
+            retDict['cinc'], retDict['ncrst'] = retDict['ncrst'], retDict['cinc']
+
         return retDict
 
 GPIOMap = GPIOMapTT04