runtime: use booleans in syscalls

artiq/coredevice/gpio.py

@@ -6,8 +6,8 @@ class GPIOOut(AutoContext):
 
     @kernel
     def on(self):
-        syscall("gpio_set", self.channel, 1)
+        syscall("gpio_set", self.channel, True)
 
     @kernel
     def off(self):
-        syscall("gpio_set", self.channel, 0)
+        syscall("gpio_set", self.channel, False)

artiq/coredevice/rtio.py

@@ -20,7 +20,7 @@ class LLRTIOOut(AutoContext):
 
     @kernel
     def _set_oe(self):
-        syscall("rtio_oe", self.channel, 1)
+        syscall("rtio_oe", self.channel, True)
 
     @kernel
     def set_value(self, t, value):
@@ -96,7 +96,7 @@ class RTIOOut(_RTIOBase):
     """
     def build(self):
         _RTIOBase.build(self)
-        self._set_oe(1)
+        self._set_oe(True)
 
     @kernel
     def sync(self):
@@ -146,7 +146,7 @@ class RTIOIn(_RTIOBase):
     """
     def build(self):
         _RTIOBase.build(self)
-        self._set_oe(0)
+        self._set_oe(False)
 
     @kernel
     def gate_rising(self, duration):

artiq/coredevice/runtime.py

@@ -12,8 +12,8 @@ lt.initialize_all()
 
 _syscalls = {
     "rpc": "i+:i",
-    "gpio_set": "ii:n",
-    "rtio_oe": "ii:n",
+    "gpio_set": "ib:n",
+    "rtio_oe": "ib:n",
     "rtio_set": "Iii:n",
     "rtio_replace": "Iii:n",
     "rtio_sync": "i:n",