the dialog box. The pattern-drawing area each grid corresponds to a pixel point in the defined pattern.
In this application, refer to the image below to make a 4 * 4 Pixels pattern in Black-and-white color, then click the Fill button to fill the Mask layer with a pattern.
Complete this fabrication before discovering the Ditherbox filter, I think my approach would be: Create a 4 * 4 Pixels size document, press Ctrl + "+" to show the figure to 1600, with the Pencil tool, the minimum size
(1) The preface has just begun to learn STM32, of course, is lit LED lights, from arm "Hello word" began. Software installation, hardware connection, the previous article has been said, there is no more to say.
(2) Experimental purpose: Use STM32F10C8T6 to complete the function of running lights.
(3) The introduction of the experiment encountered the problem: The program is finished, the lamp is not bright, commissioning for two hours, finally found t
Summarize the development, code, and process of LED lamp control mounted on/proc through one-day study.1. driver code[Cpp]# Include # Include # Include # Include # Include # Include # Include MODULE_LICENSE ("Dual BSD/GPL ");# Define USER_ROOT_DIR "led"# Define USER_ENTRY1 "led_entry1"Static struct proc_dir_entry * led_root;Static struct proc_dir_entry * led_entry1;Static char msg [255];Static unsigned long
Yesterday, a classmate talked to me about an ACM question, which was very interesting. As a result, I listened to the question's requirements:
Enter two numbers in each line as follows:
1 1234567890
Output:
2 1234567890
Output
3 1234567890
Output
I think you should know the requirements of the questions.
Analysis: The above digital output is a bit like LED digital output. I don't know if you know the seven-segment
The application of the timer, query method. Let 8 LED lights, left and right each of the 4 to light back and forthCode: /********************** Query method is the main program continuous query is interrupted, and do not need to prepare the sub-program ***********************/#include#defineLED P1#defineCOUNT 50000//50000 * 1us = 0.05s 50000 counts several times#defineTH_M1 (65536-count)%256//MODE 1 is assigned to a high of 4 bits#deefine tl_m2 (65536
Register (GPIOX_ODR) (x=a. EEG:GPIOA->ODR |= 1 2.GPIO Configuration Related RegistersPort bit set/clear register (GPIOX_BSRR) (x=a): EThe ODR register only operates on 1 and does not support write 0 operations. Use the BSRR register to clear the device.Port bit Clear Register (GPIOX_BRR) (x=a). EPort bit Clear Register (GPIOX_BRR) (x=a). E) refer to the data sheet for detailsThis register is used to lock the configuration of the port bit when the correct write sequence is set to bit (Lckk). bit
In the previous article, we introduced the framework of the character device driver. In this article, we will operate on the real hardware-led.
Author: canghai hunter Source: http://blog.csdn.net/embedded_hunter reproduced please indicate the source of embedded technology exchange QQ group: 179012822
I. experiment environment
Development machine environment
Operating System: Ubuntu 9.10
Cross-compiling environment: Arm-Linux-GCC 4.2.2, installation l
Pwr
PWR full name power, is led power supply light, when the LED in the router to power up the time has been bright, the normal situation does not flicker.
Sys
SYS, which is the system running status indicator. And it is through this lamp to inform the user of the operation of the device, if the fault or restart in the words, will flicker and not the same as usual.
Wlan
The full name of WLAN is wireles
Many netizens will install the LED display at the door of the store to facilitate the promotion and contact of their own store, thus attracting customers ' attention. So, the LED display how to change the word? In today's tutorial, we use the LEDSHOWTW LED display control software to explain the specific method!
LED e
The main implementation of this tutorial: control the LED through the Voice module on the light and out. Said "Turn on the Light", LED light, said "turn off the Light", led off.LD3320 Speech Recognition Module Overview:The use of SPI communication interface, onboard microphone and active crystal oscillator to facilitate the realization of the electronic products
The kernel of cubieboard1 already supports W1 temperature sensor DS18B20 (dependent kernel options and modules include Dallas's 1-wire support, gpio_sunxi, ww.sunxi, ww.gpio, ww.slave_therm ). DIY is an experiment that displays the current time and temperature at the same time on the 8-bit 8-segment LED display module.
Jarry's post long ago (http://forum.cubietech.com/forum.php? MoD = viewthread tid = 474) describes the use of DS18B20 on cubieboar
Http://hi.baidu.com/52_diy/blog/item/d8310dfac0a97716a8d3114b.html
POV is persistancd of vision. It uses a single-chip microcomputer to control the flow lamp, and uses the movement of the flow lamp and the temporary effect of human vision to generate various graphics or texts. The effect is as follows:
This figure shows how it works.
The principle is relatively simple, it is easy to implement with a single-chip microcomputer, and the detailed process of rotating the
1, create the LED drive device files:(1) Initialize the Cdev with the cdev-init function(2) Specify the device numberThere are two ways to assign a device number: Specify it directly in your code (hard-coded)Dynamic allocation(3) using the cdev-add function to add a character device to a character device array in the kernel(4) Create a struct class using the class-creat Macro(5) Create a device file using the device-create function2,
With the bit-band Operation , the bit-band operation is to inflate each bit into a 32-bit word that accesses these bits when the word is accessed. http://www.cnblogs.com/xiaobo-Linux/The port is then enabled to://³õê¼»¯pb5ºípe5îªêä³ö¿ú.²¢ê¹äüõâὸö¿úµäê±öó//LED Io³õê¼»¯voidLed_init (void) {gpio_inittypedef gpio_initstructure; Rcc_apb2periphclockcmd (Rcc_apb2periph_gpiob| Rcc_apb2periph_gpioe, ENABLE);//ʹäüpb,pe¶ë¿úê±öóGpio_initstructure.gpio_pin= Gp
1. design requirements
EM-STM3210E Development Board has a LED lamp D1, write a program to light up the light.
2. hardware circuit connection
On the Development Board, D1 is connected to the PF6 pin on the STM32F103ZE chip, as shown in.
3. Software Programming
According to the task requirements, the program content mainly includes:
1. configure Reset and clock control (RCC) to enable the clock of the GPIOF port Module
2. Configure the PF6 pin of the
★ General IntroductionLED driver mainly realizes the hardware drive of 4 LED lights on the TQ2440 Development Board, realizes the Pin GPIOB5, GPIOB6, GPIOB7, The high and low level setting of the GPIOB8 (the configuration of the PIN is already implemented in the COMMON-SMDK.C), the driver is called with the test program, and the LED light is illuminated by command.★ Detailed INTRODUCTION 1, Driver code: MY_
This article describes the jquery implementation of the LED Billboard rotation system picture switching effect, share for everyone to reference. Specifically as follows:JS Analog roadside giant screen advertising switch effect, have to believe that JS did, and let you have nothing to say the lifelike effect.LED advertising display on the image switch effect, the scene is similar, the effect is quite shocking to see me dumbfounded, love special effects
BBB Board lesson Four: Simple LED control experiment
Learn BBB board the ultimate goal is to imagine the microcontroller as the control, but the control of the idea is completely different (Linux control hardware device is the virtual file of the relevant equipment, read and write), the study of a few days the head is big or no progress, many blog posts on the web, there is no unified statement, It is estimated that the years of the BBB board are diff
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