docs: fix off-by-one error in gateware-blinky example

antoinevg · Jan 27, 2025 · 86597d9 · 86597d9
1 parent 7e49c39
commit 86597d9
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Showing 2 changed files with 4 additions and 4 deletions.
diff --git a/cynthion/python/examples/tutorials/gateware-blinky.py b/cynthion/python/examples/tutorials/gateware-blinky.py
@@ -14,9 +14,9 @@ def elaborate(self, platform):
         leds: Signal(6) = Cat(platform.request("led", n).o for n in range(0, 6))
 
         half_freq: int    = int(60e6 // 2)
-        timer: Signal(25) = Signal(range(half_freq + 1))
+        timer: Signal(25) = Signal(range(half_freq))
 
-        with m.If(timer == half_freq):
+        with m.If(timer == half_freq - 1):
             m.d.sync += leds.eq(~leds)
             m.d.sync += timer.eq(0)
 

diff --git a/docs/source/tutorials/gateware_blinky.rst b/docs/source/tutorials/gateware_blinky.rst
@@ -120,9 +120,9 @@ Now that we have a state definition for our timer we can move forward to the imp
             leds: Signal(6) = Cat(platform.request("led", n).o for n in range(0, 6))
 
             half_freq: int    = int(60e6 // 2)
-            timer: Signal(25) = Signal(range(half_freq + 1))
+            timer: Signal(25) = Signal(range(half_freq))
 
-            with m.If(timer == half_freq):
+            with m.If(timer == half_freq - 1):
                 m.d.sync += leds.eq(~leds)
                 m.d.sync += timer.eq(0)