msp430 microcontroller

call empty_8042 WhereEmpty_8042Has to wait for the KBD to finish handling input, say empty_8042: call delay in al,#0x64 test al,#2 jnz empty_8042 retVariation The HP Vectra accepts a distribute cut, where writing 0xdd or 0xdf to port 0x64 will disable/enable a20. ! For the HP Vectra call empty_8042 jnz err mov al,#0xdf out #0x64,al call empty_8042 jnz err mov al

Label: style blog HTTP color use AR strong SP Div 21 interrupt sources of the AVR Microcontroller I/O port second function There is a single AVR Microcontroller timer. The timer/Counter 1 is 16bit, and the rest of the timer/Counter 0 and Timer/Counter 2 are 8bit timers. Timer Working Mode Normal Mode CTC Mode Fast PWM mode Phase Correction PWM mode Phase frequency correction P

Label: style OS ar SP on EF BS New Size (1) FSMC: flexible static memory controller, variable (flexible) static storage controller Small-capacity products refer to the stm32f101xx, stm32f102xx and Stm32f103xx microcontroller. Medium Capacity products refer to the stm32f101xx, stm32f102xx and Stm32f103xx microcontroller. Large-capacity products refer to the stm32f101xx and stm32f103xx micro-control of the

IICVsSPIToday, in low-end digital communications applications, we are seen in IIC (inter-integrated circuit) and SPI (Serial peripheral Interface). The reason is that these two communication protocols are ideal for near- low-speed inter-chip communication. Philips (for IIC) and Motorola (for SPI) have developed both standard communication protocols for different backgrounds and market requirements.IIC was developed in 1982 to provide a simpler way to interconnect the CPU and peripheral chips in

difference between the two? And what's the difference between the two on the voltage?VCC is a digital power supply and theAVCC is an analog power supply . A microcontroller with AVCC is a microcontroller that contains analog devices, such as an ad conversion circuit.It is generally required that the voltage difference between AVCC and VCC must not exceed a certain value, for example, AVR

　Microchip offers two capacitive touch Sensing Solutions, one for the edging oscillator mode, that is, by detecting the frequency change of the touch sensing capacitor charge and discharge, to detect if there is a key press, according to the microcontroller integrated hardware resources, the other through Microchip microcontroller integrated on-chip charging time detection unit (CTMU) implementation.This a

back and forth, it must be less effort, will be in a long time to no avail.2 Framework for embedded system learningLearning embedded is also the case. Must master a certain method, can compare fast and effective study.Then this method is the framework learning method, just now we also said, first in understanding the basic framework before we have a certain foundation, then this is the basis of a single-chip microcomputer and C language, do not need you to master how good, but must have a certa

Every time I contact a new microcontroller, I will be very curious how many MHz the microcontroller's system clock, how to reach the maximum system clock described in datasheet, the microcontroller's peripheral clock will be how many MHz it? If I want to use delay, how can I write a program to achieve a precise delay? I think these are the questions I need to know before I start contacting a new microcontroller.For each ARM CORTEX-M series SCM, manufa

exchange and digital signal processing. • Supports repetitive operations and avoids excessive time spent in cyclic operations.• Rich on-chip memory and external expansion memory interface. • Provide multiple serial or parallel i / o interface and special i / o interface ( etc ) Because the MCU and DSP have their own characteristics , so they have different fields of application. General microcontroller is often used in some simple contr

can be used to display a character, each bit has a point spacing between the interval, there is a gap between each line, play the role of character spacing and line spacing.3. Temperature setting Module:The tactile switch is an electronic switch that, when used, can be switched on by gently pressing the switch button, and when the hand is loosened, the switch is disconnected. Use 3 switches, respectively, function conversion, set +, set-, to complete all the set operation.4. Temperature control

I'm with Arduino, and why write this series of articlesArduino has been on fire for years, and it's not a new technology. If someone is not clear about what Arduino is, I'm sorry, please search by yourself, open any Wikipedia introduction or a fan of the series of articles, people introduced more than I know more comprehensive. I'm afraid I don't have to repeat it here.The first contact with Arduino was in 2008, then I know nothing about embedded development, just started to learn MCU, that is,

GPIO IntroductionGpio is used for the transmission of data by single-chip microcomputer and external devices.When the MCU Gpio is set to output, the MCU can output arbitrary data to gpio, and when the Gpio is set to the input microcontroller can read other devices and transmit to gpio data.STM8 microcontroller each port has 8 feet, each pin, can be independently programmed for digital input or digital outpu

Previously just learned single-chip computer, after a set of programming, can achieve a lot of different functions, at that time, it is felt that single-chip microcomputer is really powerful. Later came into contact with DSP, found that DSP processing digital in communication, more convenient. So I was curious to ask myself, DSP and microcontroller, what is the differenceSee a forum on the DSP and the difference between the single-chip post, after car

The 40 pins of a microcontroller can be divided into 4 categories: power , clock , control , and I/O pins .1. Power supply:⑴VCC-Chip power supply, connect to the + +;⑵vss-ground end;2. Clock:XTAL1, XTAL2-crystal oscillator circuit inverting input and output terminals. 3. Control lines: control lines Total 4, ⑴ale/prog: Address latch allow/on-chip EPROM programming pulse ①ale function: Used to latch a low 8-bit address sent by P0 Port

The single chip microcomputer multi-byte serial port receive (high-order research of serial port multi-byte receive send)Original address: Http://bbs.ednchina.com/BLOG_ARTICLE_3007162.HTMWork for more than a year, wrote a lot of single-chip computer serial program. The sense of the serial port multi-byte receive part of the logic relative to the configuration register with the serial port reply, is a bit difficult--register configuration is basically dead, serial port reply multibyte and reply t

. ZigBee Application AreasFive. Development environment ConfigurationInstallation of IARfirst of all, I suggest you download cracked version, so do not go to their own to crack, even if not cracked version, there are a lot of cracked tutorials on the web, and then the next step, the following is the installation interface:CH340 (USB to serial) driver installationWhy to press this thing, because the microcontroller and the computer is connected through

for external expansion memory. The interior is also integrated with USB2. 0 device ports, as well as rich on-chip peripheral resources, powerful. The at9lsam7x256 reset controller can manage the power-up sequence of the chip and the entire system. The microcontroller has an embedded 10/100 MB/s Ethernet (Ethernet) MAC, CAN, full speed (MB/s) USB2. 0, designed for a wide range of networked real-time embedded systems, its performance is stable, powerfu

Original address: http://www.cnblogs.com/jason-lu/articles/3195473.htmlQ: How to implement a monolithic Ethernet microcontroller?A: The trick is to integrate microcontrollers, Ethernet media access controllers (Macs) and physical interface transceivers (PHY) into the same chip, which removes many external components. This scheme enables MAC and PHY to be well matched, while reducing the number of kohiki feet, Reduce the chip area. The monolithic Ether

electronic design, some maker prefers a microcontroller platform, such as the fiery Arduino. But for some of the more complex projects, the 8-bit microcontroller is a bit stretched. For example, a 8-bit microcontroller can barely handle audio with low sample rates, but there's really nothing to do with video processing. However, with the booming of embedded syst

Plus once, J becomes 2, the expression 3 I also become 2 , and then judge the condition 2, found 2For the For statement in addition to this standard usage, there are several special usages of our last lesson flashing light for the use of the For statement (i=0; iThere is another way to write for (;;), so that after this is written, the For loop becomes a dead loop, and the execution (the statement that needs to be executed) is the same as the one we talked about while (1). And how is this synta