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diff --git "a/rt-thread-version/rt-thread-standard/tutorial/make-bsp/renesas-ra/\347\221\236\350\220\250RA2L1\345\274\200\345\217\221\345\256\236\350\267\265\346\214\207\345\215\227.md" "b/rt-thread-version/rt-thread-standard/tutorial/make-bsp/renesas-ra/\347\221\236\350\220\250RA2L1\345\274\200\345\217\221\345\256\236\350\267\265\346\214\207\345\215\227.md"
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+++ "b/rt-thread-version/rt-thread-standard/tutorial/make-bsp/renesas-ra/\347\221\236\350\220\250RA2L1\345\274\200\345\217\221\345\256\236\350\267\265\346\214\207\345\215\227.md"
@@ -1,6 +1,6 @@
 # 瑞萨 RA2L1 开发实践指南
 
-## 零、实践指南说明
+## 实践指南说明
 
 ### 1. 硬件介绍
 
@@ -144,46 +144,103 @@ RA2L1 产品组基于 Cortex-M23 核心（现 Cortex-M 系列中功耗最低的
 
 ![descript](media/ab5ddfcae5479703b609f0255cde3f87.png)
 
-## 一、瑞萨 RA2L1 上的 UART 实践
+## 瑞萨 RA2L1 上的 GPIO 实践
 
 ### 前言说明
 
 #### 本章内容
 
-本章通过 RT-Thread Studio 配置 RA2L1 片上外设 UART 的功能，实现开发板和 PC 进行通信。
+本章通过 RT-Thread Studio 配置 GPIO 实现输入、输出的设定，及 GPIO 中断使用。
 
 #### 模块介绍
 
-- UART0: P101/P100
-- UART9: P109/P110
-- 串口转接模块
+主要介绍按键输入 (P004) 及 led(P502)  输出控制的使用
+
+![descript](media/e272140304a3143ff607306225aceb00.png)
 
 #### 开发软件
 
 - 开发环境：RT-Thread Studio
-- 下载工具：Jflash
+- 下载工具：Jflash--板载
 
 ### 步骤说明
 
-#### 新建工程
+工程搭建参考  **RT-Thread Studio IDE 使用的基础介绍**，注意 FSP 只能使用 3.5.0 版本，使用 4.0.0 测试无法出现配置界面
+
+![descript](media/dad65ad0dfd5f31a36a8935f09cf9039.png)
+
+将 LED 对应 pin 脚 P502 设置为输出模式，输出类型为 CMOS，P502 配置成 GPIO
+
+![descript](media/aa86527116672af5a8b2fb6592658105.png)
+
+按键对应的 P04 设置为 为 IRQ_mode，分配 IRQ 为 3 指定 P004 类型为 IRQ0_IRQ_03
+
+![descript](media/15cc6aaf44e26966f130126f26e50231.png)
+
+icu0 中有整体的 IRQ 管理控制设置
+
+![descript](media/e012f44a77be57cb1a2788a5ba18891a.png)
+
+保存设置，点击工程生成
+
+#### 编写测试程序
+
+```c
+#include <rtthread.h>
+#include "hal_data.h"
+#include <rtdevice.h>
+
+#define LED1_PIN    "P502" /* Onboard LED pins */
+#define USER_INPUT  "P004"
 
-打开 RT-Thread Studio，如下图新建工程 RT-Thread 项目
+void hal_entry(void)
+{
+    rt_kprintf("\nHello RT-Thread!\n");
+    while (1)
+    {
+        rt_thread_mdelay(500);
+    }
+}
 
-![descript](media/28ce41ffb98e0045600d92c6dfec48b5.png)
+void irq_callback_test(void *args)
+{
+    static int out ;
+    rt_kprintf("\n IRQ03 triggered \n");
+    rt_uint32_t led1_pin = rt_pin_get(LED1_PIN);
+    out = rt_pin_read(led1_pin)?PIN_LOW:PIN_HIGH;
+    rt_pin_write(led1_pin,out);
+}
 
-创建基于开发板的项目，注意一般英文文件名与英文保存路径，如下图所示。
+void push_btn(void)
+{
+    /* init */
+    rt_uint32_t pin = rt_pin_get(USER_INPUT);
+    rt_kprintf("\n pin number : 0x%04X \n", pin);
+    rt_err_t err = rt_pin_attach_irq(pin, PIN_IRQ_MODE_RISING, irq_callback_test, RT_NULL);
+    if (RT_EOK != err)
+    {
+        rt_kprintf("\n attach irq failed. \n");
+    }
+    err = rt_pin_irq_enable(pin, PIN_IRQ_ENABLE);
+    if (RT_EOK != err)
+    {
+        rt_kprintf("\n enable irq failed. \n");
+    }
+}
+MSH_CMD_EXPORT(push_btn, push_btn);
+```
 
-![descript](media/e88a749ce26fe3887a3e437cfce8d1b0.png)
+### 代码验证
 
-如果在 RT-Thread Studio 环境的工程目录下没有显示 RASC，就按照下图方法找到工程目录下. settings 文件夹下的 projcfg.ini 文件，打开后增加一行内容 `dvendor_name=RENESAS`。
+代码下载、烧录,串口助手输入push_btn,点击按钮，观察led 是否状态反转（亮-按钮点击-灭--按钮点击---亮...）
 
-![descript](media/5dcbbec3ed30395621735e9123c704bb.png)
+![descript](media/8db4a7996b09f7a9f88ee68521e11fa2.png)
 
-打开 RASC，第一次打开需要选择文件夹，如下图所示。
+### 章节总结
 
-![descript](media/d53a7097a92d7e70b82576eb806f566b.png)
+GPIO 是 MCU 控制中最基础的，可以用于模拟 I2C IR UART 等协议，主要有输入输出设定、中断、回调触发函数等设置。
 
-## 二、瑞萨 RA2L1 上的 GPIO 实践
+## 瑞萨 RA2L1 上的模拟 I2C 实践
 
 更多内容请点击链接查看在线文档 [《瑞萨 RA2L1 开发实践指南》](https://docs.qq.com/doc/DQktJWmpBZkNiTnh6)，包含内容如下：