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RSS订阅原创 5，配置烧录环境 - openOCD
开发环境：ubuntu22.04 + stm32CubeMX + gcc-arm-none-eabi，烧录工具：openOCD下载 openOCD
2021-06-01 20:59:26
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原创 3，配置开发环境 - 安装 arm-none-eabi-gcc
开发环境：ubuntu22.04 + stm32CubeMX + gcc-arm-none-eabigcc-arm-none-eabi 的具体信息和用途，可以在网络上看看别人的总结。首先登录到该软件的下载地址 https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm/downloads ，选择那个适合自己电脑环境的版本，我的电脑是 linux 64bit
2021-05-31 14:32:27
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原创 3，配置开发环境 - 安装 gcc-arm-none-eabi
开发环境：ubuntu20 + stm32CubeMX + gcc-arm-none-ebai1，关于 gcc-arm-none-ebai 的具体信息和用途，可以在网络上看看
2021-05-31 11:25:15
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原创 1，配置开发环境 - 安装 CubeMX
开发环境：ubuntu22.04 + stm32CubeMX + gcc-arm-none-ebai安装 CubeMX
2021-05-31 10:23:16
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原创 2021/5/8 练车记录之科目二 #1
自从三月份考过科目一之后，拖拖拉拉地今天第一次真正地上车练习。早晨六点钟起床，收拾停当就骑着自行车去驾校报道，到达那里已经是七点十分，教练可能有点不高兴，害她起个大早等我。从七点二十分到八点半，学了知识点：转方向盘，调整座椅，调整后视镜，钥匙启动，手刹，脚踏板，换档，前进后退，左右前进转弯，左右后退转弯。1，转方向盘这是个铁架子上面放着的圆盘，放在驾校的休息区，让新手练习用的。打方向盘分为向左或者向右的 1/4圈，1/2圈，1圈，1圈半。首先，人坐在椅子上，身体正对着方向盘，两手掌自然握住方
2021-05-08 14:45:33
153
原创 create Golang project with channel
1, create new project "test11_channel"$ cd ~/project$ mkdir test11_channel$ cd test11_channel$ touch channel.go2,add following lines in “channel.go”package mainimport ( "fmt" "time")func main() { // TEST 1, goroutine var n1, n2 string =
2020-12-27 13:53:26
85
原创 create Golang project with interface #2
1, create new project "test10_assert"$ cd ~/project$ mkdir test10_assert$ cd test10_assert$ touch assert.go2,add following lines in “assert.go”package mainimport ( "fmt")type Mint inttype Name struct { firstName string secondName string
2020-12-26 15:19:18
67
原创 create Golang project with interface #1
1, create new project "test9_interface"$ cd ~/project$ mkdir test9_interface$ cd test9_interface$ touch interface.go2,add following lines in “interface.go”package mainimport ( "fmt" "time")type example interface { describe() change()}
2020-12-25 18:30:45
71
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原创 create Golang project with method
1, create new project "test8_method"$ cd ~/project$ mkdir test8_method$ cd test8_method$ touch method.go2,add following lines in “method.go”package mainimport ( "fmt")type Book struct { author string publish uint64}type Bus struct {
2020-12-25 09:21:41
76
原创 create Golang project with function
1, create new project “test7_function”$ cd ~/project$ mkdir test7_function$ cd test7_function$ touch function.go2,add following lines in “function.go”package mainimport ( "fmt")type Dog struct { name string weight float32 sex string}
2020-12-23 21:08:10
72
原创 create Golang project with condition statement
1, create new project “test6_condition”$ cd ~/project$ mkdir test6_condition$ cd test6_condition$ touch condition.go2,add following lines in “condition.go”package mainimport ( "fmt" "math")func main() { // TEST 1, regular for loop forCase1
2020-12-20 17:05:44
107
原创 create Golang project with basic concepts
1, create new project “test5_concept”$ cd ~/project$ mkdir test5_concept$ cd test5_concept$ touch concept.go2,add following lines in “concept.go”package mainimport ( "fmt" "time" "math/rand")const ( year int = 365 month int = 12 day int =
2020-12-20 13:26:18
74
原创 create Golang project with unitTest
1, create new project “test3_multiple”$ cd ~/project$ mkdir test4_unittest2, create new module for project “test4_unittest”$ mkdir pkg3, initialize “pkg” folder$ touch lib.go$ touch lib_test.go4,add following lines in “lib.go”package pkgimpor
2020-12-20 09:39:30
98
1
原创 create Golang project with multiple returns
package mainimport "fmt"func main() { fmt.Println("Hello world .")}
2020-12-19 19:59:46
58
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原创 create Golang project with random
1, create new project "test2_random"$ cd ~/project$ mkdir test2_random2, create new module for project "test2_random"$ cd test2_random$ mkdir main$ mkdir pkg3, initialize "main" folder$ cd main$ touch magic.goadd following lines in "mag
2020-12-16 20:27:51
69
原创 creat Golang project with function
1, create new project "test1_function"$ cd ~/project$ mkdir test1_function2, create new module for project "test1_function"$ cd test1_function$ mkdir main$ mkdir pkg3, initialize "main" folder$ cd main$ touch calculate.goadd following l
2020-12-15 20:08:30
61
原创 create first Golang project
1, create new project "test0_math"$ cd ~/project$ mkdir test0_math2, create new module for project "test0_math"$ mkdir mmath_lib$ go mod init test0_math3, add function for module "mmath_lib"$ touch calculate.go4, add following lines in func
2020-12-14 20:38:01
88
原创 Hello Golang !
1, create new folder "project" for Golang execise code$ mkdir ~/project2, create go file$ touch hello.go3, edit go file, add following lines in file "hello.go"package mainimport ( "fmt")func main() { fmt.Println("Hello Golang !")}
2020-12-14 19:07:55
70
翻译 Install Golang
Requirements: Ubuntu1, Download source package for Golang from: https://golang.org/doc/install2, click here:3, check there is a new package named "go1.15.6.linux-amd64.tar.gz" bellow Downloads folder4, install golang in your PC: $ sudo tar -C /us
2020-12-14 18:27:23
143
原创 print local time by Python3
# ============== CODE==============#!/usr/bin/python3import timetime_tick = time.time()time_date = time.localtime(time_tick)#print(time_tick, time_tick%1)print("current time: year-month-dat...
2020-03-23 11:21:29
124
原创 create thread of C++ on linux
This is a simple project on C++(ubuntu16.04), try to create a thread and define a condition_variable to notify thread to do something. I compile this project by cmake. So 2 files is needed: main.cpp &...
2019-08-12 22:08:21
302
原创 Convert dict to string in Python3
#!/usr/bin/env python3# define a dict object/dd = dict()d['0'] = 'a'd['1'] = 'b'print("type/d:", type(d), " value/d:", d)# convert dict to strings = str(d)print("type/s:", type(s), " value/s...
2019-03-28 16:24:38
601
翻译 exception in Python3
Some excercise about exception issue in Python3.5Sample Zero:#!/usr/bin/env python3try: # hello exception ! x = input("Enter the first number: ") y = input("Enter the second number: ")...
2018-12-19 15:17:57
167
原创 Install VScode on ubuntu
My OS is ubuntu16.04 and my laptop is 32bit, then I install Visual Studio Code1.29.1.Step 1: go to official web to download source package: https://code.visualstudio.com/DownloadStep 2: choose tha...
2018-11-27 20:11:51
575
原创 Floyd algorithm in Python3.5
#!/usr/bin/env python3# Refer to: http://wiki.jikexueyuan.com/project/easy-learn-algorithm/floyd.html# Comments: The Floyd algorithm can tell how much the nearest path between 2 vertex costsN = 4...
2018-08-30 15:36:28
218
原创 Dijkstra algorithm in Python3.5
#!/usr/bin/env python3# Refer to: http://wiki.jikexueyuan.com/project/easy-learn-algorithm/dijkstra.html# Comments: The Dijkstra algorithm can tell what is the shortest path and how much it cost.c...
2018-08-30 14:40:59
286
原创 mqtt client communication
I write 2 mqtt clients with Python2.7: mqtt_talk.py and mqtt_listen.py, they get publisher and subscriber inside. Take mqtt_talk.py as example, once received a mqtt message from mqtt_listen.py, it ech...
2018-08-28 18:04:32
235
原创 mqtt publish and subscribe with Python
Assume you have read some introduction papers about MQTT(like here: https://pypi.org/project/paho-mqtt/)I write 2 Python scripts with python2.7: mqtt_talk.py as publisher, mqtt_listen.py as subscrib...
2018-08-28 17:39:20
440
原创 stm32f7 CAN: loop-back communication on CAN1 and CAN2
Struggling three days on CAN communication, tons of CAN protocol to read, but I prefer creating new project on STM32 than reading papers alone, with the reference of STM32Cube and searched informa...
2018-05-18 15:03:20
640
原创 write in and read from TXT file by python
Simple example to open a new TXT file and write down some helpful data.import timefin = open("data.txt", "w")fin.write(str(1000 * round(time.time())))fin.write("Hello Python World !")fin.write("\n")fi...
2018-05-11 15:35:45
291
原创 KNN algorithm in Python
This is a homework of Computer Vision class(2017) of Feifei Li, CS231n, Stanford University. I prefer to focus on single task of every assignment in one blog, so I will display my work for task1 in as...
2018-04-26 21:55:06
206
原创 stm32f7 TIM: input capture and PWM output
Busying with TIM function of stm32f7 these two days, I spend almost one week to get familiar with TIM and create a simple example about TIM configuration and Interruption capturing and PWM wave creati...
2018-04-23 16:06:39
594
原创 Configure Eclipse for stm32
Comes an instruction to help you create simple STM32 project in Eclipse.Requirements: Ubuntu 16.04, STM32F767IG.Source available here:
2017-12-09 20:30:11
201
原创 LSD algoritm
Once considering detect a line from image, Hough Line Detection algorithm must be the first choice, it's classic and easily to understand, but in this blog I would like to share another useful algorit
2017-10-22 09:02:21
314
原创 Publish ROS message from terminal
Here are some simple steps to make you know how to publish a ROS message in terminal by command line:Step 1: Set up roscore.Step 2: Define a ROS message in your ROS workspace, I get a nonsense mes
2017-10-09 16:58:10
375
stm32 CAN1 CAN2 loopback
2018-05-18
stm32 TIM input capture and create PWM wave
2018-04-29
Configure Eclipse for STM32 development
2017-12-09
LSD a line detection algorithm
2017-10-22
数字图像处理 冈萨雷斯 中文第二版
2015-11-26
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