mr12 led

Tags: blog HTTP Io 2014 log different images onWhat's amazing is that the above pattern actually changes. I'm very curious. How can I tell you ??The conversion rate is used to calculate the variation frequency of the LED lamp.This is similar to the display principle of the old CRT.For example, when the fan speed is 60rpm, it is 60 laps per minute and 1 lap per second (of course, the actual speed is much faster, how can we get 600 rpm ).The fan has a s

/*Name: Stm32_gpio-lit LEDNote: For STM32, the operation of the LED is basically the corresponding IO port. ButUnlike 51, STM32 is equipped with a clock tree for each device, so it uses the correspondingdevice, you need to implement a configured clock tree (configured in the library function) and turn on the appropriate deviceThe clock (here is the corresponding Gpio port). Secondly, the IO port of STM32 is more complex than the 51 single chip, and ma

This article mainly introduces jquery's implementation of the LED billboard rotation system image switching effect similar to the roadside scenario, very practical code, recommended to everyone, there is a need for small partners can refer. This article describes how jquery achieves the image Switching Effect of the LED billboard rotation system and shares it with you for your reference. The details are as

Pca9635 ledout0 to ledout3-LED driver output State Register Ldrx = 00-LED driver X is off (default power-up state ). Ldrx = 01-LED driver X is fully on (individual brightness and group dimming/blinking Not controlled ). Ldrx = 10-LED driver x individual brightness can be controlled through its pwmx Register. Ldrx = 11

LED Driver Development Experiment , the LED1~LED2 is connected with Gpc0_3 and Gpc0_4 respectively, and the high and low levels of the gpc0_3 and gpc0_4 pins areTo control the continuity of the transistor, thereby controlling the LED's light-off. According to the characteristics of the transistor, when these pins output high, the collector and the emitter conduction, the light emitting diode is lit; Conversely, the

Approaching will arrive, and most of the partners have snapped up a train ticket home. But, in this cold winter there is a fetish has reached the point of Chenchnya, that is what we have to say 12306 pit Dad Verification Code! When the verification code or simple number of small series is still very happy to help small partners to rob tickets, but until they appear I just understand not all the busy is you want to help can help!Especially after seeing the upgraded version of it, I can only shout

BBB lesson four innings: simple LED control experimentLearn the BBB board ultimate goal is to do the same with the imagined microcontroller control. But control is not the same idea at all (Linux in essence, the control of hardware devices, read and write under the device related to virtual files), the study of the days of the head is big or no progress. Guest articles. There is no unified statement, it is expected that the BBB board of different year

DriverProgramAnd test program development, see http://blog.csdn.net/embedded_hunter/article/details/6860690 Next, we will compile the previously developed driver into the kernel. The method is as follows: Step 1:In the android kernel source code configuration provided by the ok6410 Development Board, deselect the LED driver that comes with the board. # Make menuconfig Remove the following two items under device drivers> character devices>.

Connect the Development Board and PC, then open the power switch on the S3C Development Board, and after successful startup, execute the build.sh script file to compile and install the LED driver. The build script file will automatically upload the driver. ko file to the S3C Development Board and install it.The LED driver creates a/dev/s3c5410_leds device file that can control 4 LEDs in the Linux driver. Yo