mr12 led

It is really necessary to add two resistors upstairs, or the current flowing through the LED and transistor will burn the LED and tube. at that time, I only wanted to draw a schematic diagram. After replying to the post, I remembered that I had to add a throttling resistor.However, the resistance value selected upstairs does not seem suitable.Assume that the on-going voltage drop of the

Today, I tried to drive the LED screen of a digital tube. I used a common cathode LED screen of a product to check the LED screen of a digital tube based on the circuit diagram. The Code is a little lengthy. There are several driver methods. Here is just one of the most direct solutions. We need to make time to make more efficient calls and driver solutions.

The company stayed for one afternoon and looked at the android WiFi framework. It was still ignorant. It's all strange that I couldn't sleep yesterday, and I didn't want to turn on the air conditioner. Alas, summer is over. But it's a bit rewarding. After dinner, return to the dormitory. I thought, I used to look at the output of the serial port in the last few experiments. I was so boring that I used to play 51 or FPGA or something. So I thought I had to make some practical work. Okay, remember

Reference:http://blog.csdn.net/qq_28992301/article/details/52385518http://blog.csdn.net/zoe6553/article/details/6372445Http://blog.chinaunix.net/uid-25014876-id-111745.html1: What is the platform bus?Platform bus is different from the physical bus USB, I²c, SPI, pic bus virtual bus, some USB device location needs to be addressed via the USB bus,And some similar to the SOC internal peripherals such as the LED watchdog timer is directly addressed throug

1. Press the "Power" button on the back of the monitor. (The following "power" key action, all refers to this key.) ） 2. There are 5 small icons appearing at the bottom right of the screen. 3. Move the "power supply" key up. 4. Move the cursor to the location of the menu, press the "Power" button. 5. Toggle the "power" button up or down, move the cursor to "system", press "power" key. 6. Toggle the "power" button up or down, move the cursor to "turn

In this case, the main purpose is to realize the flashing of the LED lamp. First analysis led driving mode, this experiment is used openm3v, built-in 8 LEDs are used to drive the flow (low-power Pingliang). If you want to achieve its flicker, you need to give the corresponding port a constant alternating level of high and low. In the software structure design, adding the use of LED8, you need to be in the P

/int main (void) {/* Configure the GPIO pin mode used by the Shenzhou III LED lamp */Rcc_apb2periphclockcmd (rcc_gpio_led, ENABLE); /* GPIO clock to enable LED lights */Gpio_initstructure.gpio_pin = ds1_pin| ds2_pin| ds3_pin| Ds4_pin; Gpio_initstructure.gpio_mode = gpio_mode_out_pp; Gpio_initstructure.gpio_speed = Gpio_speed_50mhz; Gpio_init (gpio_led, gpio_initstructure); /* The

The tiny6410 Development Board supports both NAND and SD startup modes. In my understanding, it means "nc" is not connected. Om [] = 01111, boot_eint [] = 000, refer to the following table to indicate that the SD card is enabled. The switch is not described in the schematic. The LED diagram is as follows: Gpk4, 5, 6, and 7 light-emitting diodes are switched ON when the light-emitting diode is switched on. Arm Assembly

After the hello World Driver in the previous article, I am familiar with the general framework of the driver program. The driver of the second lesson is led! Pay attention to how it operates gpio and how it is associated with the user layer (Application Layer. Code attached: # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Includ

Hardware resource LED2--GPO_06 control. Porting code gpio underlying API gpio-related underlying API is implemented in the arch/ARM/mach-lpc32xx/include/Mach/lpc32xx_gpio.h file. Usage example: 536/* Set led gpio as an output */537 _ raw_writel (outp_state_gpo (1), gpio_p2_dir_set (gpio_iobase )); 292/* enable the backlight */293 # If defined (outputs) 294 _ raw_writel (outp_state_gpo (4), gpio_p3_outp_clr (gpio_iobase); 295 # Elif defined (outputs) 2

Soon after I learned the driver, I saw about four chapters in ldd3. I first wrote a hello World driver, and later it was a memory-oriented character device driver, the latter made me clear the use of quantum and quantum sets, but there was no real device that could be seen with the naked eye. I checked some information and referred to other books, I plan to write an LED Linux driver by myself. If I have learned the character device driver, writing thi

1. Io Configuration Three registers are required for the configuration of the IOS port of the standard. IO port register P0 P1 P2 Address 0x80 0x90 0xa0 Pxsel P0sel P1sel P2sel Address 0xf3 0xf4 0xf5 Px [] function to set registers. The default is normal IO port (0: normal IO port 1: second function) Pxdir P0dir P1dir P2dir Address 0xfd 0xfe 0xff Px [] inpu

Nimi2440 bare metal LED program problems-general Linux technology-Linux technology and application information, the following is a detailed description. I am a beginner. This is the code I wrote. There is no syntax error, but it is a logic error and cannot implement the desired result. Please advise !! # Define GPBCON (* (volatile unsigned long *) 0x56000010) # Define GPBDAT (* (volatile unsigned long *) 0x56000014) # Define LED1_BCL (3 # Define LED

The first step, first talk about the single-chip microcomputer LED lit:Single chip microcomputer can operate single bit: Sbit led1 =P1 ^2; Control the light and extinguish by controlling variable led1; #include sbit led1 = P1 ^ 2; void delay(unsigned int xx)//延时 { int i = 0; while(xx--) { for(i = 0; i 400; i++); } } int main() { while(1) { led1 = 1//

Factory settings are: 202.11.11.01The initial port number is: 2929Set the IP of the virtual machine with the IP of the LED on a network segment, Telnet command on the virtual machine, log on to the LED.In the/etc/init.d/rcs file,#!/bin/shMount-t Proc/proc/procMount-t Sysfs/sys/sysMount-t devpts devpts/dev/ptsifconfig eth0 hw ether 00:15:07:21:00:72Ifconfig eth0 10.0.10.211 netmask 255.255.255.0Route add default GW 202.11.11.38Telnetd-l/bin/shCD Signal

as an Internet of things professional students, feel not to learn these things connected to the knowledge of the Internet can not afford their own, well, learning to start!!! The CC2530 has 21 digital input/output pins, namely p01-p07, P10-P17, P20-P24. In particular, it is important to note that the input and output of the CC2530 pin is different from the 51 single chip microcomputer, look at the comparison of the picture.Well, this has a basic understanding of our own ZigBee module to understa