Arduino, digital devices include switches, LED Lattice devices, and integrated circuits.Simulated input of ArduinoYun
The analog IO corresponds to the digital IO, which is used to exchange analog signals, and the analog signals change continuously. The most common example of analog signals is indoor temperature and humidity. Their changes are continuous without sudden changes. The analog input accepts a continuously changing voltage input, and Yun has 12 analog inputs, 6 of which are concentrat
Document directory
(1) experiment Overview
(2) program flowchart
(3) related computing
(4) experiment source code and Analysis
I. Connecting
In the previous article, we learned how to implement simple external interruptions. With the practical experience of interrupt, we will discuss the timer interrupt in this section. The cc2430 has four timers, which can be divided into three categories: timer 1, Timer 2, and timer 3/4 (3 and 4 are used in the same way ).
Since the author has just com
Eighth ChapterThis chapter will introduce the implementation of the buzzer to the original plow and achieve a complete buzzer drive (can turn the buzzer on and off).1.Linux Driver code reuse: You can use standard C program methods to put code that will be reused in other files. If you want to use some features, include the corresponding header file, it can also be another way of dynamic reuse, but also a Linux driver can use the resources in another Linux drive. There are two more macros (_init
directly control the PMIC (mt6329) output PWM to control the brightness of the backlight. In relatively dark lines, the backlight is reduced to save power. The following figure shows the functional modules of labc:
3. CABC
The CABC function requires a new imagecontent analyzer circuit in the LCD Driver IC. When the mobile phone processor transmits an image to the driver IC, after the Content Analyzer calculates and counts the image data, it auto
rotating.In the program, you can control the Rotation Angle of the steering gear by generating PWM with different pulse widths.The above code generates a PWM drive steering gear rotation, which is relatively simple. Delay is used in the code to implement latency. If multiple Steering gears are controlled at the same time, such Code cannot be used and you need to calculate the time yourself. Because the ent
analogread (PIN) simulates the IO port read function, and the PIN is represented as 0~5 (Arduino Diecimila is 0~5,arduino nano for 0~7). For example, the analog sensor can be read (10-bit ad,0~5v is represented as 0~1023).Analogwrite (PIN, value)-PWM digital IO port PWM output function, Arduino digital IO port labeled PWM IO port can use this function, PIN repre
project if an existing project is located in/home/obugs/projects/orangebugs directory, you can define this directory as a git project $ cd/home/obugs/projects/orangebugs$ git initinitializedEmptyGit Repository in/home/obugs/projects/orangebugs/.git/This establishes a name for the.git folder, which is the folder that Git uses to store information and track changes. www.2cto.com $ ls-altr.Gittotal40DRWXRWXR-x 4 git git 4096 13 22:39REFSDRWXRWXR-x 4 git git 4096 13 22:39OBJECTSDRWXRWXR-X 2 git git
The memory has recently fallen exponentially, and the things that were previously understood have been forgotten, so write them down to avoid having to review the data again next time.
Here is about stm32f10x, and STM32F0XX series or some differences, F0 's next time to write ....
To sum up: reuse is a PIN has several functions, 1. Do ordinary IO input and output 2. Other peripherals input and output (such as I2C,TIM,SPI, etc.), this is reuse.
Remapping is to redefine the PIN function to other p
application development environment to start, a simple explanation of the Android interface and event processing, in-depth analysis of Android handler multithreading mechanism, focusing on the Android NDK application layer and driver communication;Part of the content, the first simple explanation of the Android system transplant related principles, and then step by step to teach you how to carry out the Linux kernel porting, Android source code compilation, and Android to Cortex A8 Development
processing, in-depth analysis of Android handler multithreading mechanism, focusing on the Android NDK application layer and driver communication; Part II, First of all, the Android system transplant related principles, and then step by step to teach you how to carry out the Linux kernel porting, Android source code compilation, and Android to Cortex A8 Development Board, the third part, first teach you how to build a bare metal development environment, Then we will take you through the Samsung
-vesabios.so
Io-graphics-g1024x768x16-dldevg-rage.so-d0x1002, 0x4755-I0
-G indicates the display resolution and color depth of the image,-DL indicates the hardware driver, and-D indicates the driver uniquely identifies the PCI manufacturer and device ID required by the hardware, if there are two graphics cards with the same manufacturer and ID, use-I to specify the card and-P to specify the palette file used.
The main files required for this part are:
L/usr/photon/bin/IO-graphics: starts the gra
The stm32 series CPU has up to 8 timers;
1. Among them, tmi1 and tim8 are advanced timers that can generate three pairs of PWM complementary outputs, which are commonly used in the drive of Three-Phase Motors. Their clock is generated by apb2 output;
2. The other six are common timers, and the clock is generated by the apb1 output;
Timer function:
1. Timing function 2. Counting Function 3. Input capture 4. Matching output 5.
write multiple digitalout pins as one value
Portinout-fast way to read/write multiple digitalinout pins as one value
Port is to read the data of gpio in the same port at the same time. Faster than bus. For more information, see the above link.
The port name is in portnames. h.
Pwmout-pulse-width modulated output
PWM output, very useful.
First, check whether the interface supports PWM
branchesdrwxrw Xr-x 36 git 4096 Aug 13 .. drwxrwxr-x 7 git 4096 Aug 13. 4. add and submit files to the project. These operations are similar to those of CVS and SVN, such as $ git add *. java *. c $ git commit-m'initial upload of the project 'create mode 100755 Orangebugs. javacreate mode 100755 pwm/ui/DataManager. javacreate mode 100755 pwm/ui/PasswordFrame. javacreate mode 100755
Smart Car --- use Linux2.6 -- general Linux technology-Linux programming and kernel information. The following is a detailed description. Smart Car V0.1
Author: Sam Yamano, coolwyc@21cn.com
(400) {this. resized = true; this. width = 400; this. alt = 'click here to open new window';} "onmouseover =" if (this. resized) this. style. cursor = 'hand'; "onclick =" window. open ('HTTP: // www.roboticfan.com/blog/UploadFiles/2007-8/221435205355.jpg'); ">
(400) {this. resized = true; this. width =
The eighth chapter makes the Development Board sound: Buzzer driverOne, Linux code-driven code reuse: Linux-driven code reuse there are many ways, such as the C program, the code will be reused in other files but to be declared in the header file. Another way to use dynamic reuse is to have a Linux driver using another driver's content, such as a function. Compilation is a Linux driver consisting of multiple files, and if the Linux driver is complex, it requires multiple Linux files to hold diff
Ⅰ, overviewBased on the previous article "Tim Input waveform capture (Pulse frequency)" on the basis of expansion, the previous article is mainly to capture the frequency of waveforms, this paper mainly expands the capture waveform of the duty ratio .The author tests the method and the same as the previous article, through the signal generator to generate PWM signal , through the serial port transmission frequency and duty ratio to the upper computer
The eighth chapter mainly learns to let the development Board make the sound: buzzer drive. The first thing you should know is that the buzzer is a hardware device on the s3c6410 Development Board. Then we have to learn the Linux-driven code reuse problem, he has many ways, you can use the standard C program, the code will be reused in other files. Alternatively, you can use another dynamic reuse approach, where a Linux driver can use resources from another Linux driver. Then the compilation is
Code reuse is divided into static and dynamic. Static reuse is when you use certain features, include the corresponding header file. Dynamic reuse is a Linux driver that can use resources from another Linux driver. When compiling multiple source code files in the C or C + + language, if A.C uses the functions in the B.C file, you need to use extern to pre-define the B.C in the a.c file, and extern is to tell the compiler the function name, the number of arguments, the parameter type, and the ret
providing visual features such as usart_init and usart_transmit. This approach allows any USART,SPI,PWM, or other peripheral to have common features that are supported by all microcontrollers. instead of focusing on how the underlying hardware works, use the HAL to hide the details of the underlying, specific device, and let the application developer focus on the application's needs. At the same time , HAL provides a reusable container. 4. Reference
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.