From c99f18501acc1f2f03892802d0900d7a7f467c9a Mon Sep 17 00:00:00 2001
From: imi415 <imi415.public@gmail.com>
Date: Sun, 28 Feb 2021 22:23:52 +0800
Subject: [PATCH] Update doc.

---
 README.md | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/README.md b/README.md
index a2bf000..22e6f76 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,17 @@ CMake v3.10+
 * TIM3
 * TIM7
 
+# USART0
+* PA9/PA10
+* 921600/8N1
+
+# TIM2/3
+* PWM output on CH3/CH4
+* 1kHz base frequency
+
+# TIM7
+* Tick source
+
 ## FMC
 FMC clock: 133MHz(Maximum frequency under VOS 3 settings)