From 623195af70d1e5262754dca216ee30e3012034cf Mon Sep 17 00:00:00 2001
From: "Rufus V. Smith" <rufusvsmith@gmail.com>
Date: Mon, 6 Sep 2021 12:06:57 -0400
Subject: [PATCH] allow tone frequency of zero

---
 adafruit_funhouse/peripherals.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/adafruit_funhouse/peripherals.py b/adafruit_funhouse/peripherals.py
index 3ea876a..9a1d1c5 100755
--- a/adafruit_funhouse/peripherals.py
+++ b/adafruit_funhouse/peripherals.py
@@ -96,8 +96,8 @@ def play_tone(frequency, duration):
         It will attempt to play the sound up to 3 times in the case of
         an error.
         """
-        if frequency <= 0:
-            raise ValueError("The frequency has to be greater than 0.")
+        if frequency < 0:
+            raise ValueError("Negative frequencies are not allowed.")
         attempt = 0
         # Try up to 3 times to play the sound
         while attempt < 3: