build: Define DECL_CONSTANT mechanism for defining exported constants

Add a DECL_CONSTANT macro to allow the firmware to define constants
that are to be exported to the host during the "identify" phase.  This
replaces the existing hardcoded mechanism of scanning the Kconfig
header file for certain constants.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

2 files changed, 2 insertions, 2 deletions

diff --git a/klippy/console.py b/klippy/console.py
index 94476007..1dd99ca9 100755
--- a/klippy/console.py
+++ b/klippy/console.py
@@ -27,7 +27,7 @@ class KeyboardReader:
         self.reactor.unregister_timer(self.connect_timer)
         return self.reactor.NEVER
     def update_evals(self, eventtime):
-        f = self.ser.msgparser.config.get('CLOCK_FREQ', 1)
+        f = int(self.ser.msgparser.config.get('CLOCK_FREQ', 1))
         c = self.ser.get_clock(eventtime)
         self.eval_globals['freq'] = f
         self.eval_globals['clock'] = int(c)
diff --git a/klippy/serialhdl.py b/klippy/serialhdl.py
index 2a539cf1..2e4bc467 100644
--- a/klippy/serialhdl.py
+++ b/klippy/serialhdl.py
@@ -101,7 +101,7 @@ class SerialReader:
         self.msgparser.process_identify(dictionary, decompress=False)
         est_clock = 1000000000000.
         if pace:
-            est_clock = self.msgparser.config['CLOCK_FREQ']
+            est_clock = float(self.msgparser.config['CLOCK_FREQ'])
         self.serialqueue = self.ffi_lib.serialqueue_alloc(self.ser.fileno(), 1)
         self.est_clock = est_clock
         self.last_ack_time = time.time()