led throwies

Evaluate led standards Reprinted from: http://www.eslighting.cn/2010/0419/162_2.html Author: LED times Network As a lighting product, the following factors must be taken into account:Luminous flux and Efficiency Colors, colors, heat dissipation design, and reliability 1. Luminous flux and efficiency (typical brands) 3000 K 4000 K 6000 K rebel Phili

Main push sd6602d/sd6603d/sd6604d isolation advantage Scheme Q q 2892715427The main push sd6602d/sd6603d/sd6604d is a high-precision, low-cost primary feedback LED constant current drive chip, should beFor flyback isolation LED illumination.The chip works in the inductive current discontinuity mode, which is suitable for 90vac~265vac input voltage,Output power below 18W.The main push sd6602d/sd6603d/sd6604d

After a few days of learning, finally the basic framework of Linux drive to figure out ... Really hard,,, but finally still boil over, although still the most basic,,,Tonight also finished my first Linux drive,,, Heart still a little excited, haha o (∩_∩) oDirectly on the drive source program:::My Development Board is Smart210, according to schematic, IO port output 0 LED light, Output 1 led off#include #in

After the previous migration, the kernel can already mount the root filesystem on tqimx6q, and then start porting all kinds of device drivers, this article first to transplant the keys and LEDs. The reason to start with the keys and LEDs is that the drivers for both devices are the simplest.Key-driven portingView the schematic of the tqimx6q that the Development Board has 5 keys, which, in addition to the reset key, there is a power button, this power key and other keys are somewhat different, s

Products> chiming New Product .T17 bulb power LED .Festoon bulb xpe led .T10 led wedge Lamp Power 1 LED .T10 led wedge bulb power 1

EmbeddedLinux Bare Metal Development (i)--light Led Development Board: Friendly arm smart210First,Circuit Diagram Inspection1. Floor circuit diagram Consult the Board circuit diagram of the development boards, consult the LED related partsLED Circuit Working principle:650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M01/82/5E/wKioL1dSyoCwaSpsAAAbV0ZVsno967.png "title=" Picture 1.png "alt=" Wkiol1dsyoc

This week, I learned how to use it. Refer to ldd3 and embedded system interface design and Linux driver development. Combined with my own development board, I developed the LED driver program, writing a program on your own is really different from reading a book. Many mistakes were made in the process, but the program was finally completed. I'm very happy! Hardware Platform: tq2440 Kernel version: 2.6.30.4 1. Hardware Introduction Next, we will first

Document directory (1) create a workspace and a project (2) Configure general options (3) linker settings (4) debugger settings: (1) create a program file (2) Introduce header files (3) define led pins (4) Main Function (5) code Overview I. Connecting In the previous article "ZigBee journey (1): setting up the ground", we briefly introduced Zigbee and the establishment of its development environment. Okay, now the tools are complete, and

I. When it comes to the bare metal program of arm, many people will immediately think of a development tool named ads, but we can also do the bare metal program of arm in Linux, the specific implementation process is as follows: Step 1: edit the code. Step 2: Compile the Code. The Code is divided into three parts: 1. Link Script 2. Use the command line to determine the file sequence during the link 3. Use the command line to compile the code. The three parts can all be written as a MAKEFILE file

Android system transplantation and driver development-Chapter 7-LED driver and android driver development Implementation principle of LED Driver Write LED driver: Before testing the LED driver, you need to use a USB data cable to connect to the development board, and then turn on the power. After the startup is succes

I. Tutorial Purpose Learn how to use Arduino ide. For details, refer Http://www.arduino.cn/thread-1065-1-1.html learning Programming Control LED blinking Arduino related syntax Basics Ii. Experimental Equipment Device Name Quantity Arduino Control Panel (UNO R3) 1 block USB data cable 1 Root Bread 1 block LED Light Emitting Dio

The main steps of the simple led program are as follows:First: Create LED-driven device files1. Initialize the Cdev with the Cdev_init function2. Specify the device number3. Use the Cdev_add function to add a character device to a character device array in the kernel4. Create Struct_class using Class_create macros5. Create a device file using the Device_create functionII: Uninstall the

LED display compared with LCD display, led in brightness, power consumption, visual angle and screen update rate, etc., have more advantages. LED and LCD power consumption is about 10:1, and the higher update rate makes the LED in the image has better performance, can provide 160° perspective, can display a variety of

Experimental purpose Flash light Program in embedded learning like "Hello world." "It's just as Classic in C + + language learning. It guides countless embedded enthusiasts in a simple way. With this section you can learn a basic understanding of STM32 's Gpio and the use of basic timers. Hardware description This routine requires a timer and an LED, where the LED is the red

Today, I finally tested the LED driver in Linux for te6410. Looking at the flickering led, I felt a long-time success! First, paste the LED driver code: // # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Define device_name "LEDs"# Define led_major 231 Static u

LED light dimming basics:There are two ways to ☆:led light dimming control signals: 1. Control the duty ratio of the LED lamp switching power supply through PWM signal to achieve dimming; 2. Two-wire or three-line type (e.g. LED phase dimming) 3 by dimming control signal and AC power supply line . D

In the previous article, the installation of the SD card's bare-metal development environment and the OK6410 start-up settings were mentioned, and this chapter began to enter the blinking control of the LED lights.1, first open the OK6410 Development Board schematic diagram, find led and other control schematic parts, such as 1 shown.650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/7F/9D/wKiom1ck2

I wrote an LED driver over the past two days and read many posts online. The idea is very clear at first, that is, first look at the circuit diagram and find that the LED lights are connected to the GPM port, Then, let's look at the data manual, first to gpmcon port write command words, let the GPM0-5 set to output, and then write data to the gpmdat port, in the GPM0-5 pin to pull low or pull high level, To

1 /*********************************2 code function: Light an LED light3 using functions:4 Pinmode (PIN number, mode);5 Digitalwrite (PIN number, level state); Default low level (or floating space)6 creation time: 2016*10*077 Author Email: [Email protected]8 ********************************/9 intLED = -;//LED pin SettingTen voidSetup ()//initialization section (single execution) One { APinmode (

The main points of driver implementation in this article: first, automatic creation of device files is realized. You do not need to use the mknod command to automatically create device files every time you run the driver. This article uses udev (mdev) to automatically create device files. Second, the control of LED lights is not achieved by directly setting the binary bits of the relevant gpio. This article uses the operating functions of the S3C2410