ft232 chip

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

Known as the world's lowest power Bluetooth single chip DA14580 in the wearable market, health care, ibeacon positioning and other markets have been widely used, but because of its more closed technology/data support led to a high level of technical barriers developers, the network also rarely see the development of DA14580 technology sharing, Therefore, the general enterprise and the general technical team are not daring to adopt the platform, but on

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

In the wireless data transmission system, the wireless transceiver chip is the core carrier of the technology. As the signal sending and receiving, modulation, and debugging, it plays an absolute core role. We will compare and analyze several Wireless Transceiver Chip Solutions. 1) CC1000 Wireless Transceiver Chip Solution CC1000 is a single-

DDR2 Circuit DesignHigh-speed large-capacity cache is an essential hardware in high-speed big data applications. At present, the use of a wide range of high-speed large-capacity memory in FPGA system has a classical low-speed single data rate of SDRAM memory, and high-speed dual-rate DDR, DDR2, DDR3 type SDRAM memory, The DDR series of memory all require the FPGA chip has the corresponding hardware circuit structure support. For the Altera Cyclone IV

MCS-51 Microcontroller in the physical structure has four storage space: 1. In-chip program memory2. Off-chip program memory3. In-chip data storage4. Off-chip data storage But logically, from the user's point of view, 8051 Single-Chip Microcomputer has three storage spaces:

Mobile phone brands are not a new concept because Apple and Samsung have already done so. Since Huawei this year because of the launch of the 920 in the high-end model of the first-class full use of self-research chip and get a good market response, as if all of a sudden hanging up the appetite of other companies, ZTE has launched its own processor, millet and the core of the formation of joint ventures, mobile phone brand manufacturers really must se

[CCID news] Introduction: Forbes, published in October 6, pointed out that major companies have presented the latest products and design plans on the autumn processor design Forum recently held, at this conference, Multiple kernel technologies became the focus of competition in the market. At the annual autumn processor Forum, major companies have discussed and designed their own chip products and made predictions about the trend of future processor

First, RS485 basic knowledgeRS-485 interface chip has been widely used in industrial control, instrumentation, instrumentation, multimedia networks, electromechanical integration products and many other fields. There are also more and more types of chips available for RS-485 interfaces. How to find the most suitable chip in a wide range of interface chips is a problem in front of every user. RS-485 interfac

The South Bridge chip (South Bridge) is an important part of the motherboard chipset, typically located far below the CPU slot on the motherboard. The role of the bridge chip The bridge chip is responsible for the communication between the I/O bus, such as PCI bus, USB, LAN, ATA, SATA, audio controller, keyboard controller, real-time clock controller, ad

Collect collected information from the Internet: How can I determine whether the crystal oscillator is working properly? 1. There are many judgment methods. It is most direct to view the waveform with an oscilloscope. You can also test the voltage with the voltage file of a digital multimeter. Because the duty cycle of the crystal oscillator waveform is 50%, therefore, the average voltage measured is about 1/2 VCC. For 51 single-chip microcomputer, wh