168 lines
6.4 KiB
Markdown
168 lines
6.4 KiB
Markdown
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# ch32v103r-evt BSP 说明
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## 开发板简介
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ch32v103r-evt 是基于 CH32V103 MCU 推出了一款开发板，包含 WCH-Link 调试器，具有丰富的外设，比较适合入门学习 RISC-V 架构。
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开发板图片
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<img src="figures/2022-03-27_182300.bmp" alt="2022-03-27_182300" style="zoom:50%;" />
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基本硬件资源：
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- 青稞 V3A 处理器，最高 80MHz 系统主频；
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- 支持单周期乘法和硬件除法；
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- 20KB SRAM，64KB CodeFlash；
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- 供电范围：2.7V ~ 5.5V，GPIO同步供电电压；
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- 多种低功耗模式：睡眠/停止/待机；
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- 上电/断电复位（POR/PDR）；
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- 可编程电压监测器（PVD）；
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- 7通道 DMA 控制器；
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- 16路 TouchKey 通道监测；
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- 16路12位 ADC 转换通道；
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- 7个定时器；
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- 1个 USB2.0 主机/设备接口（全速和低速）；
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- 2个 IIC 接口（支持 SMBus/PMBus）；
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- 3个 USART 接口；
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- 2个 SPI 接口（支持 Master 和 Slave 模式）；
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- 51个 I/O 口，所有的 I/O 口都可以映射到16个外部中断；
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- CRC 计算单元，96位芯片唯一 ID；
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- 串行单线调试（SWD）接口；
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- 封装形式：LQFP64M、LQFP48、QFN48。
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更多信息和资源请访问 [WCH CHV103](http://www.wch.cn/products/CH32V103.html?)
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## 编译说明
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板级包支持 RISC-V GCC 开发环境，以下是具体版本信息：
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| IDE/编译器 | 已测试版本 |
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| ---------- | -------------------- |
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| GCC | WCH RISC-V GCC 8.2.0 |
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## 外设支持
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本 BSP 目前对外设驱动的支持情况如下：
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| 驱动 | 支持情况 | 备注 |
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| --------- | -------- | :------------------------:|
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| UART | 支持 | USART 1 |
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| GPIO | 支持 | PA0...PE15 |
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### IO在板级支持包中的映射情况
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| IO号 | 板级包中的定义 |
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| ---- | -------------- |
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| PA9(默认与板载wch-link串口相连) | USART1_TX |
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| PA10(默认与板载wch-link串口相连) | USART1_RX |
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## 使用说明
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本章节是为刚接触 RT-Thread 的新手准备的使用说明，遵循简单的步骤即可将 RT-Thread 操作系统运行在该开发板上，看到实验效果 。
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### 快速上手
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本 BSP 为开发者提供 SCons编译配置。下面介绍如何将系统运行起来。
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#### SCons 编译
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需要先正确配置 RISC-V GCC 位置，推荐使用 RT_Studio 软件包里的
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```
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import os
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ARCH = 'risc-v'
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CPU = 'ch32v1'
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# toolchains options
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CROSS_TOOL = 'gcc'
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#------- toolchains path -------------------------------------------------------
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if os.getenv('RTT_CC'):
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CROSS_TOOL = os.getenv('RTT_CC')
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if CROSS_TOOL == 'gcc':
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PLATFORM = 'gcc'
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EXEC_PATH = r'D:/Softwares/RT_ThreadStudio/repo/Extract/ToolChain_Support_Packages/WCH/RISC-V-GCC-WCH/8.2.0/bin'
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else:
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print('Please make sure your toolchains is GNU GCC!')
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exit(0)
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# if os.getenv('RTT_EXEC_PATH'):
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# EXEC_PATH = os.getenv('RTT_EXEC_PATH')
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```
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开始 scons 编译
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```
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LT@DESKTOP-WIN10 E:\WorkSpaces\rt-thread\bsp\wch\risc-v\ch32v103r-evt
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>scons
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scons: Reading SConscript files ...
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Newlib version:3.0.0
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scons: done reading SConscript files.
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scons: Building targets ...
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scons: building associated VariantDir targets: build
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CC build\applications\main.o
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CC build\board\board.o
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CC build\board\ch32v10x_it.o
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....
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CC build\libraries\ch32_library\StdPeriph_Driver\src\ch32v10x_misc.o
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CC build\libraries\ch32_library\StdPeriph_Driver\src\ch32v10x_pwr.o
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CC build\libraries\ch32_library\StdPeriph_Driver\src\ch32v10x_rcc.o
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CC build\libraries\ch32_library\StdPeriph_Driver\src\ch32v10x_rtc.o
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CC build\libraries\ch32_library\StdPeriph_Driver\src\ch32v10x_spi.o
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CC build\libraries\ch32_library\StdPeriph_Driver\src\ch32v10x_tim.o
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CC build\libraries\ch32_library\StdPeriph_Driver\src\ch32v10x_usart.o
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CC build\libraries\ch32_library\StdPeriph_Driver\src\ch32v10x_wwdg.o
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LINK rtthread.elf
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riscv-none-embed-objcopy -O binary rtthread.elf rtthread.bin
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riscv-none-embed-size rtthread.elf
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text data bss dec hex filename
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63540 392 8080 72012 1194c rtthread.elf
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scons: done building targets.
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```
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#### 硬件连接
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使用数据线连接板载 wch-link 到 PC，打开电源开关。
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#### 下载
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打开WCH_RISC-V_Programmer下载软件，选择bsp目录下生成的`rtthread.bin` 文件,单击执行进行下载。
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> WCH_RISC-V_Programmer下载软件 可以从 MRS IDE中直接导出
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#### 运行结果
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在终端工具里打开板载 wch-link 串口（WCHDapLink SERIAL，默认115200-8-1-N），复位设备后，在串口上可以看到 RT-Thread 的输出信息:
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```bash
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\ | /
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- RT - Thread Operating System
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/ | \ 4.1.0 build Apr 4 2022 16:57:50
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2006 - 2022 Copyright by RT-Thread team
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MCU: CH32V103C8T6
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SysClk: 72000000Hz
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www.wch.cn
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msh >ps
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thread pri status sp stack size max used left tick error
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-------- --- ------- ---------- ---------- ------ ---------- ---
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tshell 20 running 0x00000140 0x00000400 83% 0x00000003 000
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tidle0 31 ready 0x000000b0 0x00000100 70% 0x00000002 000
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timer 4 suspend 0x000000e0 0x00000200 43% 0x00000009 000
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main 10 suspend 0x00000140 0x00000800 20% 0x0000000f 000
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```
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## 联系人信息
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维护人:
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- [blta](https://github.com/blta)
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