From c6a1e7c00cd2946cef7716b205026a907136778b Mon Sep 17 00:00:00 2001
From: guowenxue <guowenxue@gmail.com>
Date: Sun, 12 Jul 2026 18:41:28 +0800
Subject: [PATCH] Add ex1.servo-sg90
---
ex1.servo-sg90/Board/buzzer.h | 37 +++++++++++++++++++++++++++++++++++++
1 files changed, 37 insertions(+), 0 deletions(-)
diff --git a/ex1.servo-sg90/Board/buzzer.h b/ex1.servo-sg90/Board/buzzer.h
new file mode 100644
index 0000000..549c1a0
--- /dev/null
+++ b/ex1.servo-sg90/Board/buzzer.h
@@ -0,0 +1,37 @@
+/**********************************************************************
+* Copyright: (C)2024 LingYun IoT System Studio
+* Author: GuoWenxue<guowenxue@gmail.com>
+* Description: ISKBoard buzzer/beeper driver and music play
+*
+* ChangeLog:
+* Version Date Author Description
+* V1.0.0 2024.08.29 GuoWenxue Release initial version
+***********************************************************************/
+
+#ifndef __BUZZER_H
+#define __BUZZER_H
+
+typedef struct
+{
+ uint32_t freq; /* 音符频率，0表示休止 */
+ uint32_t duration; /* 持续时间(ms) */
+} Note_t;
+
+/**
+ * @brief 让蜂鸣器响 $times 次，每次间隔 $interval 毫秒
+ */
+extern void beep_start(uint16_t times, uint16_t interval);
+
+/**
+ * @brief 播放歌曲
+ */
+extern void Play_Song(const Note_t *song, uint32_t note_count);
+
+extern const Note_t twinkle[];
+extern const uint32_t twinkle_count;
+extern const Note_t happy_birthday[];
+extern const uint32_t happy_birthday_count;
+extern const Note_t jingle_bells[];
+extern const uint32_t jingle_bells_count;
+
+#endif
--
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