Kendryte K210是RISC-V Dual Core 64bit, with FPU、QVGA@60fps/VGA@30fps的AIoT方向的芯片。同时也因为采用开源的指令集，使得它可能具有无限的潜力。
我们这次依旧没有使用公版，依旧是自家的板子，但是目前还没后续消息，也不能说太多，就忽略掉相关硬件信息吧，请见谅。
一、Ubuntu开发环境搭建：
1. 获取资料
获取资料当然是应该去官方的开发者资源中心，在里面可以看到资料还是比较详细的，同时也包括了工具链和SDK等等，同时开发文档有简中和繁中两种选择，这不得不说很舒服。
言归正传，我们需要下载什么呢？当然是toolchain、SDK和OpenOCD(On-Chip Debugger)了。
当然使用带有桌面的linux实体机或者虚拟机相对简单很多，如果命令行界面的话，最简单的操作步骤就是wget URL-link就可以了。
wget https://s3.cn-north-1.amazonaws.com.cn/dl.kendryte.com/documents/kendryte-openocd-0.1.3-ubuntu64.tar.gz
wget https://s3.cn-north-1.amazonaws.com.cn/dl.kendryte.com/documents/kendryte-toolchain-ubuntu-amd64-8.2.0-20190213.tar.gz
wget https://s3.cn-north-1.amazonaws.com.cn/dl.kendryte.com/documents/kendryte-freertos-sdk-0.7.0.zip
wget https://s3.cn-north-1.amazonaws.com.cn/dl.kendryte.com/documents/kendryte-standalone-sdk-0.5.6.zip2. 安装toolchain
进入到下载文件保存的目录，将toolchain解压并放在指定目录。
hulk@hulk-test:~/kendryte210$ sudo tar -xvf kendryte-toolchain-ubuntu-amd64-8.2.0-20190213.tar.gz -C /opt/我这里面的下载目录就是~/kendryte210，然后使用tar配合-xvf和-C来解压并放在/opt目录下面，这个路径是自己选择的。
hulk@hulk-test:~/kendryte210$ cd /opt/kendryte-toolchain/bin/
hulk@hulk-test:/opt/kendryte-toolchain/bin$ pwd
/opt/kendryte-toolchain/bin我们这一步的目的是获取它的目录，然后要把它添加到系统的PATH里面，这样才能方便的使用
sudo vi /etc/profile打开文件后，在文末添加一行
PATH="$PATH:/opt/kendryte-toolchain/bin"然后保存退出并重载一下profile文件即可。
source /etc/profile接下来就是验证一下到底有没有装好呢？利用自动补全功能即可，在命令行输入riscv64然后按积下TAB键，就可以看到一堆自动补全待选的内容，如果没有review上面的步骤。
3. 安装OpenOCD
继续回到我们之前的下载路径，然后解压OpenOCD，并进入。
hulk@hulk-test:~/kendryte210$ tar -xvf kendryte-openocd-0.1.3-ubuntu64.tar.gz
hulk@hulk-test:~/kendryte210$ cd ./kendryte-openocd/对于这个不熟悉的东西，我们可以先看下它的Readme.txt，它里面就提到了我们如何快速开始。
==============
Quickstart
==============
1. Install libusb-1.0 first if you do not have:
sudo apt install libusb-dev -y
2. Run the following command in the `kendryte-openocd` directory(or `check_version.sh`):
./bin/openocd -v
and you will see two lines of words if it can work:
Kendryte Open On-Chip Debugger For RISC-V v0.1.3 (20180912)
Licensed under GNU GPL v2
我们就直接照着做就可以了。
4. 开始编译
解压SDK
hulk@hulk-test:~/kendryte210$ unzip kendryte-standalone-sdk-0.5.6.zip
hulk@hulk-test:~/kendryte210$ cd kendryte-standalone-sdk-0.5.6/
hulk@hulk-test:~/kendryte210/kendryte-standalone-sdk-0.5.6$ ls
CHANGELOG.md cmake CMakeLists.txt kendryte-package.json lds lib LICENSE README.md src准备工作做完，就可以开始准备编译了。首先，我们应该先建立一个用于编译的文件夹。
mkdir build
cd build生成makefile，因为我们之前已经配置了相关环境
hulk@hulk-test:~/kendryte210/kendryte-standalone-sdk-0.5.6/build$ cmake .. -DPROJ=hello_world
PROJ = hello_world
-- Check for RISCV toolchain ...
-- Using /opt/kendryte-toolchain/bin RISCV toolchain
-- The C compiler identification is GNU 8.2.0
-- The CXX compiler identification is GNU 8.2.0
-- The ASM compiler identification is GNU
-- Found assembler: /opt/kendryte-toolchain/bin/riscv64-unknown-elf-gcc
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
SOURCE_FILES=/home/hulk/kendryte210/kendryte-standalone-sdk-0.5.6/src/hello_world/main.c
Project: hello_world
LIST_FILE=/home/hulk/kendryte210/kendryte-standalone-sdk-0.5.6/cmake/executable.cmake
TOOLCHAIN=/opt/kendryte-toolchain/bin
KENDRYTE_IDE=
BUILDING_SDK=yes
CMAKE_BUILD_TYPE=Debug
CMAKE_C_COMPILER=/opt/kendryte-toolchain/bin/riscv64-unknown-elf-gcc
CMAKE_CXX_COMPILER=/opt/kendryte-toolchain/bin/riscv64-unknown-elf-g++
CMAKE_LINKER=/opt/kendryte-toolchain/bin/riscv64-unknown-elf-ld
CMAKE_OBJCOPY=/opt/kendryte-toolchain/bin/riscv64-unknown-elf-objcopy
CMAKE_OBJDUMP=/opt/kendryte-toolchain/bin/riscv64-unknown-elf-objdump
CMAKE_MAKE_PROGRAM=/usr/bin/make
CMAKE_C_FLAGS= -mcmodel=medany -mabi=lp64f -march=rv64imafc -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -fno-zero-initialized-in-bss -ffast-math -fno-math-errno -fsingle-precision-constant -Os -ggdb -std=gnu11 -Wno-pointer-to-int-cast -Wall -Werror=all -Wno-error=unused-function -Wno-error=unused-but-set-variable -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wextra -Werror=frame-larger-than=32768 -Wno-unused-parameter -Wno-sign-compare -Wno-error=missing-braces -Wno-error=return-type -Wno-error=pointer-sign -Wno-missing-braces -Wno-strict-aliasing -Wno-implicit-fallthrough -Wno-missing-field-initializers -Wno-int-to-pointer-cast -Wno-error=comment -Wno-error=logical-not-parentheses -Wno-error=duplicate-decl-specifier -Wno-error=parentheses -Wno-old-style-declaration
CMAKE_CXX_FLAGS= -mcmodel=medany -mabi=lp64f -march=rv64imafc -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -fno-zero-initialized-in-bss -ffast-math -fno-math-errno -fsingle-precision-constant -Os -ggdb -std=gnu++17 -Wall -Werror=all -Wno-error=unused-function -Wno-error=unused-but-set-variable -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wextra -Werror=frame-larger-than=32768 -Wno-unused-parameter -Wno-sign-compare -Wno-error=missing-braces -Wno-error=return-type -Wno-error=pointer-sign -Wno-missing-braces -Wno-strict-aliasing -Wno-implicit-fallthrough -Wno-missing-field-initializers -Wno-int-to-pointer-cast -Wno-error=comment -Wno-error=logical-not-parentheses -Wno-error=duplicate-decl-specifier -Wno-error=parentheses
LDFLAGS= -nostartfiles -static -Wl,--gc-sections -Wl,-static -Wl,--start-group -Wl,--whole-archive -Wl,--no-whole-archive -Wl,--end-group -Wl,-EL -Wl,--no-relax -T /home/hulk/kendryte210/kendryte-standalone-sdk-0.5.6/lds/kendryte.ld
CMAKE_BINARY_DIR=/home/hulk/kendryte210/kendryte-standalone-sdk-0.5.6/build
Makefile created.
-- Configuring done
-- Generating done
-- Build files have been written to: /home/hulk/kendryte210/kendryte-standalone-sdk-0.5.6/build
看到Makefile created.，就表示OK了。
最后就可以开始编译了，可以看到如下类似的编译画面：
hulk@hulk-test:~/kendryte210/kendryte-standalone-sdk-0.5.6/build$ make
Scanning dependencies of target kendryte
[ 2%] Building C object lib/CMakeFiles/kendryte.dir/bsp/entry.c.obj
[ 5%] Building C object lib/CMakeFiles/kendryte.dir/bsp/entry_user.c.obj
[ 8%] Building C object lib/CMakeFiles/kendryte.dir/bsp/interrupt.c.obj
[ 11%] Building C object lib/CMakeFiles/kendryte.dir/bsp/locks.c.obj
[ 14%] Building C object lib/CMakeFiles/kendryte.dir/bsp/printf.c.obj
[ 17%] Building C object lib/CMakeFiles/kendryte.dir/bsp/sleep.c.obj
[ 20%] Building C object lib/CMakeFiles/kendryte.dir/bsp/syscalls.c.obj
[ 23%] Building C object lib/CMakeFiles/kendryte.dir/drivers/aes.c.obj
[ 26%] Building C object lib/CMakeFiles/kendryte.dir/drivers/apu.c.obj
[ 29%] Building C object lib/CMakeFiles/kendryte.dir/drivers/clint.c.obj
[ 32%] Building C object lib/CMakeFiles/kendryte.dir/drivers/dmac.c.obj
[ 35%] Building C object lib/CMakeFiles/kendryte.dir/drivers/dvp.c.obj
[ 38%] Building C object lib/CMakeFiles/kendryte.dir/drivers/fft.c.obj
[ 41%] Building C object lib/CMakeFiles/kendryte.dir/drivers/fpioa.c.obj
[ 44%] Building C object lib/CMakeFiles/kendryte.dir/drivers/gpio.c.obj
[ 47%] Building C object lib/CMakeFiles/kendryte.dir/drivers/gpiohs.c.obj
[ 50%] Building C object lib/CMakeFiles/kendryte.dir/drivers/i2c.c.obj
[ 52%] Building C object lib/CMakeFiles/kendryte.dir/drivers/i2s.c.obj
[ 55%] Building C object lib/CMakeFiles/kendryte.dir/drivers/kpu.c.obj
[ 58%] Building C object lib/CMakeFiles/kendryte.dir/drivers/plic.c.obj
[ 61%] Building C object lib/CMakeFiles/kendryte.dir/drivers/pwm.c.obj
[ 64%] Building C object lib/CMakeFiles/kendryte.dir/drivers/rtc.c.obj
[ 67%] Building C object lib/CMakeFiles/kendryte.dir/drivers/sha256.c.obj
[ 70%] Building C object lib/CMakeFiles/kendryte.dir/drivers/spi.c.obj
[ 73%] Building C object lib/CMakeFiles/kendryte.dir/drivers/sysctl.c.obj
[ 76%] Building C object lib/CMakeFiles/kendryte.dir/drivers/timer.c.obj
[ 79%] Building C object lib/CMakeFiles/kendryte.dir/drivers/uart.c.obj
[ 82%] Building C object lib/CMakeFiles/kendryte.dir/drivers/uarths.c.obj
[ 85%] Building C object lib/CMakeFiles/kendryte.dir/drivers/utils.c.obj
[ 88%] Building C object lib/CMakeFiles/kendryte.dir/drivers/wdt.c.obj
[ 91%] Building C object lib/CMakeFiles/kendryte.dir/bsp/crt.S.obj
[ 94%] Linking C static library libkendryte.a
[ 94%] Built target kendryte
Scanning dependencies of target hello_world
[ 97%] Building C object CMakeFiles/hello_world.dir/src/hello_world/main.c.obj
[100%] Linking C executable hello_world
Generating .bin file ...
[100%] Built target hello_world二、Windows开发环境搭建：
1. 获取资料
获取资料当然是应该去官方的开发者资源中心，在里面可以看到资料还是比较详细的，同时也包括了工具链和SDK等等，同时开发文档有简中和繁中两种选择，这不得不说很舒服。
言归正传，我们需要下载什么呢？当然是toolchain、SDK和OpenOCD(On-Chip Debugger)了。
我们直接点击我们点击我们需要下载的包后面的下载按钮即可。
Kendryte K210 FreeRTOS SDK
Kendryte K210 Standalone SDK
Kendryte OpenOCD for win32
RISC-V 64bit toolchain for Kendryte K210_win322. 安装toolchain
进入到下载文件保存的目录，将toolchain解压并放在指定目录。我把toolchain放在了E盘里面单独的一个文件夹E:\Kendryte210\kendryte-toolchain，并且进入bin文件夹，然后复制当前的目录路径，然后打开Windows的环境变量设置，将这个路径添加进去。
这里面一定要根据你的实际存放目录来确定，并且后面一定不能删除，切记。
3. 开始编译
首先在Windows下面编译，要先安装Cmake，我们可以到Cmake官网去下载。然后一步一步安装就好了。
解压SDK，可以把SDK和刚才的toolchain放在一个目录下面E:\Kendryte210\kendryte-standalone-sdk-0.5.6，然后进去这个目录，我们可以按住shift+右键，打开powershell，也可以向我一样安装一个cmder，因为这个比powershell要看着舒服一些，具体用法可以百度，也可以等我后面介绍。
接下来就是创建编译需要用到的makefile
E:\Kendryte210\kendryte-standalone-sdk-0.5.6
$ mkdir build
E:\Kendryte210\kendryte-standalone-sdk-0.5.6
$ cd build
E:\Kendryte210\kendryte-standalone-sdk-0.5.6\build
$ cmake .. -DPROJ=hello_world -G "MinGW Makefiles"
PROJ = hello_world
-- Check for RISCV toolchain ...
-- Using E:/Kendryte210/kendryte-toolchain/bin RISCV toolchain
-- The C compiler identification is GNU 8.2.0
-- The CXX compiler identification is GNU 8.2.0
-- The ASM compiler identification is GNU
-- Found assembler: E:/Kendryte210/kendryte-toolchain/bin/riscv64-unknown-elf-gcc.exe
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
SOURCE_FILES=E:/Kendryte210/kendryte-standalone-sdk-0.5.6/src/hello_world/main.c
Project: hello_world
LIST_FILE=E:/Kendryte210/kendryte-standalone-sdk-0.5.6/cmake/executable.cmake
TOOLCHAIN=E:/Kendryte210/kendryte-toolchain/bin
KENDRYTE_IDE=
BUILDING_SDK=yes
CMAKE_BUILD_TYPE=Debug
CMAKE_C_COMPILER=E:/Kendryte210/kendryte-toolchain/bin/riscv64-unknown-elf-gcc.exe
CMAKE_CXX_COMPILER=E:/Kendryte210/kendryte-toolchain/bin/riscv64-unknown-elf-g++.exe
CMAKE_LINKER=E:/Kendryte210/kendryte-toolchain/bin/riscv64-unknown-elf-ld.exe
CMAKE_OBJCOPY=E:/Kendryte210/kendryte-toolchain/bin/riscv64-unknown-elf-objcopy.exe
CMAKE_OBJDUMP=E:/Kendryte210/kendryte-toolchain/bin/riscv64-unknown-elf-objdump.exe
CMAKE_MAKE_PROGRAM=E:/Kendryte210/kendryte-toolchain/bin/mingw32-make.exe
CMAKE_C_FLAGS= -mcmodel=medany -mabi=lp64f -march=rv64imafc -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -fno-zero-initialized-in-bss -ffast-math -fno-math-errno -fsingle-precision-constant -Os -ggdb -std=gnu11 -Wno-pointer-to-int-cast -Wall -Werror=all -Wno-error=unused-function -Wno-error=unused-but-set-variable -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wextra -Werror=frame-larger-than=32768 -Wno-unused-parameter -Wno-sign-compare -Wno-error=missing-braces -Wno-error=return-type -Wno-error=pointer-sign -Wno-missing-braces -Wno-strict-aliasing -Wno-implicit-fallthrough -Wno-missing-field-initializers -Wno-int-to-pointer-cast -Wno-error=comment -Wno-error=logical-not-parentheses -Wno-error=duplicate-decl-specifier -Wno-error=parentheses -Wno-old-style-declaration
CMAKE_CXX_FLAGS= -mcmodel=medany -mabi=lp64f -march=rv64imafc -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -fno-zero-initialized-in-bss -ffast-math -fno-math-errno -fsingle-precision-constant -Os -ggdb -std=gnu++17 -Wall -Werror=all -Wno-error=unused-function -Wno-error=unused-but-set-variable -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wextra -Werror=frame-larger-than=32768 -Wno-unused-parameter -Wno-sign-compare -Wno-error=missing-braces -Wno-error=return-type -Wno-error=pointer-sign -Wno-missing-braces -Wno-strict-aliasing -Wno-implicit-fallthrough -Wno-missing-field-initializers -Wno-int-to-pointer-cast -Wno-error=comment -Wno-error=logical-not-parentheses -Wno-error=duplicate-decl-specifier -Wno-error=parentheses
LDFLAGS= -nostartfiles -static -Wl,--gc-sections -Wl,-static -Wl,--start-group -Wl,--whole-archive -Wl,--no-whole-archive -Wl,--end-group -Wl,-EL -Wl,--no-relax -T E:/Kendryte210/kendryte-standalone-sdk-0.5.6/lds/kendryte.ld
CMAKE_BINARY_DIR=E:/Kendryte210/kendryte-standalone-sdk-0.5.6/build
Makefile created.
-- Configuring done
-- Generating done
-- Build files have been written to: E:/Kendryte210/kendryte-standalone-sdk-0.5.6/build看到Makefile created.就表示成功创建了makefile文件。同时可以在文件夹里面看到build目录下面生成了很多文件。
现在就可以开始编译代码了。在刚才的comder里面，我们输入mingw32-make，就可以开始编译了。
E:\Kendryte210\kendryte-standalone-sdk-0.5.6\build
$ mingw32-make
Scanning dependencies of target kendryte
[ 2%] Building C object lib/CMakeFiles/kendryte.dir/bsp/crt.S.obj
[ 5%] Building C object lib/CMakeFiles/kendryte.dir/bsp/entry.c.obj
[ 8%] Building C object lib/CMakeFiles/kendryte.dir/bsp/entry_user.c.obj
[ 11%] Building C object lib/CMakeFiles/kendryte.dir/bsp/interrupt.c.obj
[ 14%] Building C object lib/CMakeFiles/kendryte.dir/bsp/locks.c.obj
[ 17%] Building C object lib/CMakeFiles/kendryte.dir/bsp/printf.c.obj
[ 20%] Building C object lib/CMakeFiles/kendryte.dir/bsp/sleep.c.obj
[ 23%] Building C object lib/CMakeFiles/kendryte.dir/bsp/syscalls.c.obj
[ 26%] Building C object lib/CMakeFiles/kendryte.dir/drivers/aes.c.obj
[ 29%] Building C object lib/CMakeFiles/kendryte.dir/drivers/apu.c.obj
[ 32%] Building C object lib/CMakeFiles/kendryte.dir/drivers/clint.c.obj
[ 35%] Building C object lib/CMakeFiles/kendryte.dir/drivers/dmac.c.obj
[ 38%] Building C object lib/CMakeFiles/kendryte.dir/drivers/dvp.c.obj
[ 41%] Building C object lib/CMakeFiles/kendryte.dir/drivers/fft.c.obj
[ 44%] Building C object lib/CMakeFiles/kendryte.dir/drivers/fpioa.c.obj
[ 47%] Building C object lib/CMakeFiles/kendryte.dir/drivers/gpio.c.obj
[ 50%] Building C object lib/CMakeFiles/kendryte.dir/drivers/gpiohs.c.obj
[ 52%] Building C object lib/CMakeFiles/kendryte.dir/drivers/i2c.c.obj
[ 55%] Building C object lib/CMakeFiles/kendryte.dir/drivers/i2s.c.obj
[ 58%] Building C object lib/CMakeFiles/kendryte.dir/drivers/kpu.c.obj
[ 61%] Building C object lib/CMakeFiles/kendryte.dir/drivers/plic.c.obj
[ 64%] Building C object lib/CMakeFiles/kendryte.dir/drivers/pwm.c.obj
[ 67%] Building C object lib/CMakeFiles/kendryte.dir/drivers/rtc.c.obj
[ 70%] Building C object lib/CMakeFiles/kendryte.dir/drivers/sha256.c.obj
[ 73%] Building C object lib/CMakeFiles/kendryte.dir/drivers/spi.c.obj
[ 76%] Building C object lib/CMakeFiles/kendryte.dir/drivers/sysctl.c.obj
[ 79%] Building C object lib/CMakeFiles/kendryte.dir/drivers/timer.c.obj
[ 82%] Building C object lib/CMakeFiles/kendryte.dir/drivers/uart.c.obj
[ 85%] Building C object lib/CMakeFiles/kendryte.dir/drivers/uarths.c.obj
[ 88%] Building C object lib/CMakeFiles/kendryte.dir/drivers/utils.c.obj
[ 91%] Building C object lib/CMakeFiles/kendryte.dir/drivers/wdt.c.obj
[ 94%] Linking C static library libkendryte.a
[ 94%] Built target kendryte
Scanning dependencies of target hello_world
[ 97%] Building C object CMakeFiles/hello_world.dir/src/hello_world/main.c.obj
[100%] Linking C executable hello_world
Generating .bin file ...
[100%] Built target hello_world到这里Ubuntu与Windows两大常用系统下面的环境就搭建好了，怎么选择完全可以看个人了。在使用桌面版Ubuntu时，完全可以时VS Code来完成写代码，同时在Ubuntu编译(迷信编译)。后面的文章将会位大家介绍下Kflash的简单用法。