ibeacon chip

User Mode (user mode): the normal mode of running the application; Fast interrupt mode (FIQ mode), used to support data transmission or channel processing; Interrupt mode (IRQ mode), used for normal interrupt processing. Super User Mode (SVC mode), operating system protection mode Exception interrupt mode (ABT mode). Enter the data and log on to or prefetch the exception interrupt command. System Mode (sys mode) is a privileged user mode used by the operating system. Undefined mode (und mode). T

[] Basic knowledge of Linux: TP-Link WN823N wireless network card (RTL8192EU chip) X86-64 and AARCH64 driver installation, Purpose: Enable embedded devices similar to Raspberry Pi's AARCH-64 architecture to connect to Ethernet over a USB wireless Nic; The device has LAN interfaces. However, after the previous system firmware upgrade, the three internal network interfaces can ping each other, but none of the interfaces can ping the external network int

The 16c2550 serial port chip can be used to expand two serial ports. Its operation method and register usage are exactly the same as 8250, so we can use the classic 8250 driver in Linux to drive st16c2550. 8250 the driver remains unchanged. You need to add the 16c2550 initialization code. In the initialization code, you need to set the chip selection and IRQ pin for 16c2550, configure the read/write timing

Transferred from: http://blog.sina.com.cn/s/blog_a575eb9401014tam.htmlHow is the RAM space allocated when the program is running in a single-chip microcomputer?I am now on a program to reduce the use of on-chip RAM optimization, there are some effects, but also produced some questions, here to ask you prawns:First, the phenomenon:1, I am in by reducing the global variables, function within the use of variab

Power and I²c communication, but others do not understand, and then in the bar to find the following tips, sorting out, useful information should be put in a good positionwufa1986"Just have a project to use this chip, AD0 decided the communication address, the online program is mostly grounded address, int is the change interrupt ah, there will be output signal change, if you do not want to read the chip, i

Recently found a lot of graduates just into the job of the students to write a single-chip microcomputer program is very confused, do not know where to start, how to achieve the desired function. Although in school to learn the relevant courses, may be the curriculum design or graduation design is to do a single-chip microcomputer design, but from the circuit board to the basic procedures have been done, th

while changing the T1 and T2.The first two methods, which change the period (or frequency) of the control pulses at the speed of the control, will cause oscillation when the frequency of the controlled pulses is close to the natural frequency of the system, so these two methods are seldom used. At present, in the control of DC motor, the fixed frequency method is used mainly. Reversible PWM control system with bipolar drive of DC motorBipolar drive refers to a PWM cycle, as the pulse voltage at

I. Single-chip microcomputer three major resources 1.flash--program storage space Equivalent to the computer's hard disk, you can achieve power loss after the data is not lost. 2.ram--Data storage space Equivalent to the memory of the computer, used to store the data generated and required during the operation of the program, data loss after power outage, the advantage is fast reading speed, can be written indefinitely. 3.s

Connection: http://homezzy.blog.hexun.com/29601793_d.htmltoday solved a small problem (check the book before you get the exact conclusion ...) ) with 51 single-chip microcomputer+ One. 0592 Crystal Oscillator, how to generate 115200 baud rate? Originally felt this meaning, direct initialization timer 1, the program is as follows:voidInit_com (void) {SCON=0x50;//serial port operating mode 1, 8-bit UART, baud rate variableTmod |=0x20;//Timer 1, working

FPGA chip Internal Hardware introductionFPGA (Filed programmable gate Device): Field programmable logic device???? FPGA based on the structure of the lookup table plus trigger, using the SRAM process, but also using flash or anti-fuse technology, the main application of high-speed, high-density digital circuit design.???? FPGA consists of programmable input/output unit, basic programmable logic unit, embedded block RAM, Rich cabling resources (clock/l

Serial communication of 51 single-chip microcomputer (III.)has been read 47 times 2015-12-29 00:21 | Personal Category: 51 single-chip microcomputer | single chip microcomputer, communication Use the serial port to send and receive simultaneously operation: The computer displays the result source program:/*Project name: Serial send and receive experimentProjec

The central bank issued a magnetic stripe card will be fully replaced by chip card, AgBank's bank card to change chip card to ask for money? How do you change it? Using ABC bank card friends, we will see the following ABC's magnetic stripe card to change the cost of chip card. ABC Exchange card cost is 40 yuan, the first IC card is free before the end of

Tags: man EPO direct Linu network card open source Basics boot self-starting forObjective:An embedded device that resembles a Raspberry Pi AARCH-64 architecture can be connected to Ethernet via a USB wireless card;The device has a LAN interface, but in the previous system firmware upgrade, its internal three network interfaces can ping each other, but either interface cannot ping the external network interface, the problem is not resolved;In addition, the lab also involves connecting to the exte

Is the chip Security Vulnerability "Invincible "? Do these three things well to protect you from attacks and security vulnerabilities. On September 6, January 4, two CPU vulnerabilities, Meltdown and Spectre, were released by security agencies outside China. The vulnerability has a wide range of impact and has attracted the attention of users. Many chip manufacturers have released their own solutions, but

Mktime localtime functions available for 8-Bit Single-Chip Microcomputer, Mktime localtime functions available for 8-bit single-chip microcomputer and source code Recently I am working on an 8-Bit Single-Chip Microcomputer project, where the timestamp conversion function is used. This database function on a 32-bit machine solves the problem, I did not expect tha

How to install a single-chip microcomputer for win10 System Identification 51 At present, there are more and more users in the win10 system, followed by more and more problems. At present, many people do not have the win10 system to identify single chip microcomputer software, so they struggle to reload the system. In fact, win10 can be manually installed to identify 51 single-