From e559b9cbc40c5281f20acc4179ce35006efdb652 Mon Sep 17 00:00:00 2001
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 <1425962791@qq.com>
Date: Tue, 7 Oct 2025 10:28:28 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E6=B3=A8=E9=87=8A?=
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---
 Power_Pico/BSP/KEY/key.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Power_Pico/BSP/KEY/key.c b/Power_Pico/BSP/KEY/key.c
index f73dc44..b57ff25 100644
--- a/Power_Pico/BSP/KEY/key.c
+++ b/Power_Pico/BSP/KEY/key.c
@@ -16,6 +16,7 @@ void Key_Port_Init(void)
 }
 
 // mode: 0 - sigle press, 1 - long press
+// return: 0 - no key press, 1 - KEYB, 2 - KEYY, 3 - KEYL, 4 - KEYR, 5 - KEYN
 uint8_t KeyScan(uint8_t mode)
 {
 	static uint8_t key_up = 1;