From 2dfb9e788772945e6bdfb0d41ce5dfecd6bd6c2e Mon Sep 17 00:00:00 2001
From: James Zow <jameszow@163.com>
Date: Mon, 25 Sep 2023 20:23:39 +0800
Subject: [PATCH] Translation Chapter 7 (#189)

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 07_timestamps/README.CN.md | 45 ++++++++++++++++++++++++++++++++++++++
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+# 教程 07 - 时间戳
+
+## tl;dr
+
+- 我们为计时器硬件添加了抽象，并在`_arch/aarch64`中实现了ARM架构计时器。
+- 新的计时器函数用于给UART打印添加时间戳，并且用于消除`GPIO`设备驱动中基于周期的延迟，从而提高准确性。
+- 添加了`warn!()`宏。
+
+## 测试它
+
+请通过 chainboot 进行检查（在上一个教程中添加）。
+```console
+$ make chainboot
+[...]
+Minipush 1.0
+
+[MP] ⏳ Waiting for /dev/ttyUSB0
+[MP] ✅ Serial connected
+[MP] 🔌 Please power the target now
+
+ __  __ _      _ _                 _
+|  \/  (_)_ _ (_) |   ___  __ _ __| |
+| |\/| | | ' \| | |__/ _ \/ _` / _` |
+|_|  |_|_|_||_|_|____\___/\__,_\__,_|
+
+           Raspberry Pi 3
+
+[ML] Requesting binary
+[MP] ⏩ Pushing 12 KiB =========================================🦀 100% 0 KiB/s Time: 00:00:00
+[ML] Loaded! Executing the payload now
+
+[    0.143123] mingo version 0.7.0
+[    0.143323] Booting on: Raspberry Pi 3
+[    0.143778] Architectural timer resolution: 52 ns
+[    0.144352] Drivers loaded:
+[    0.144688]       1. BCM PL011 UART
+[    0.145110]       2. BCM GPIO
+[W   0.145469] Spin duration smaller than architecturally supported, skipping
+[    0.146313] Spinning for 1 second
+[    1.146715] Spinning for 1 second
+[    2.146938] Spinning for 1 second
+```
+
+## 相比之前的变化（diff）
+请检查[英文版本](README.md#diff-to-previous)，这是最新的。