0 Introduction
There are many types and styles for the design and development of digital voltage meters. Traditional Digital Voltage meters have their own characteristics and are suitable for manual measurement at the site, however, to complete remote measurement and further process the measurement data, the traditional digital voltmeter cannot be used. Therefore, a digital voltmeter Based on PC communicati
What is Pic College? How do I cancel Win10 start menu display Pic College?What is Pic College? How can I cancel Win10 start menu display Pic College? Rogue behavior is often self-taught, rogue and green forest hero is different, rogue bully good, green forest hero fight rich and poor. Microsoft has gradually become rog
"I know bios"->pci (pic)
Lightseed
2009-5-13 1, PCI overview
Note: The whole article is discussed in the PIC (8259) in the process of the process. When the PCI devices are plugged into the motherboard (which is included in the South Bridge), it wants to communicate with other devices, or let the CPU do it like this, or the CPU let it do so ... So how do they communicate with each other? This is the strong
The following is an excerpt from the book "Step by Step surprise core-software core processor internal design analysis ".16.3 Programmable Interrupt Controller PIC analysis 16.3.1 PIC Introduction
Programmable Interrupt Controller (PIC) is used to respond to various interrupt events, such as Keyboard Events and arrival of serial data.
The author's Little White has a special feeling for the drawing of WYTIWYG (what are you Think are what Get). Before I heard of MetaPost and asymptote two kinds of drawing tools, many netizens say, two kinds of drawing tools, will one, can meet the needs of a lifetime.The author also inadvertently found Uncle Raymond (yes, the author of the Cathedral and the Bazaar) wrote an article "Making Pictures with GNU pic", introducing the basic use of
Http://zhiwei.li/text/2009/04/elf%E7%9A%84got%E5%92%8Cplt%E4%BB%A5%E5%8F%8Apic/
The shared libraries in ELF format use PIC technology to make code and data references irrelevant to addresses. programs can be loaded to any location in the address space. PIC does not use absolute addresses for code redirection and branch commands. PIC creates a global offset table
PIC is the prefix of the single-chip series product model produced by Microsoft chip. The hardware system design of the PIC Series single-chip microcomputer is concise, and the instruction system design is refined. Among all single-chip microcomputer varieties, it is one of the most easy-to-learn and easy-to-use single-chip microcomputer varieties. For beginners of single-chip microcomputer, if you choose
Icsp Interface Circuit
Online serial programming icsp is one of the features of the PIC microcontroller.ProgramDirectly burn it into a single-chip microcomputer, and conduct online serial programming and debugging on the single-chip microcomputer.
There are only five lines of the icsp interface circuit, which are VPP, VDD, VSS, PGD, and PGC in sequence. their connection with the PIC microcontroller is as
After learning interfaces, we can find that many of the original tasks are programming interfaces :(
Pick up the code from everywhere and look at it. Alas, it's really easy!
I wrote some comments again to pave the way for future users ~
/**//*
Name: IRQ. c
Copyright: GPL
Author: raywill
Date: 22-12-06
Description: init, disable and enable interrupt procedure
*/
# Ifndef irq1_port
# Define irq1_port 0x21
# Define irq2_port 0xa1
# Endif
/**//*
About 8259a
1.8259a is the chip used to Manage interr
the program.(3) pic Microcontroller instruction system is not set up a dedicated stop instruction, you can use a jump to their own unconditional jump instruction Goto to achieve.3. PIC microcontroller directiveConsists of 3 basic types of directives:A. Byte manipulation class directivesB. bit operation class InstructionC. Immediate count and control operation class directivesFor byte Operations directive,f
what file is pic?
Pic is an image file format in which the image file format is a format for recording and storing image information. To store, process and propagate digital images, it is necessary to use certain image format, that is, to organize and store the pixel of the image in a certain way, and to store the image data as a file to get the image file. The image file format determines what type of inf
PICSingle Chip Microcomputer System Architecture:
The system architecture is shown in. There are two main modules: PC and Data Collection System Development Board. The two modules are connected through two main lines: one is that the PC is connected to the system development board through pickit 3; the other is that the PC and the system development board are connected through a USB connection line to achieve USB communication.
Mplab ide
For PIC
register into the stack,
Open interrupt: aims to implement interrupt nesting. Use the instruction STI.
4) return of Interruption
It is completed by the instruction iret returned by the interruption. Before that, use the pop command to restore the stored field information.
PIC
1. Concept
The programmable interrupt control (PIC) programmable interrupt controller is generally an interrupt control system consi
register F content remains unchanged.
Execution time: one instruction cycle
Execution Process: [f]-[w] → D
Status flag impact: Z DC C
Note: The w register is a subtrahend in this command.
When [f] = [w], the result of subtraction is 0, then z = 1
If [f]> [w] does not take place, c = 1
When [f]
In fact, in the PIC single-chip microcomputer, this command is to obtain the complement code for the W register content and then add it to the subtrahend. The
] = 0x55
Movwf TMP; [TMP] = [w] = 0x55
Addlw W register and 8-bit immediate addition
Syntax: addlw K
Operand: K is an 8-digit immediate number.
Execution time: one instruction cycle
Execution Process: [w] + k → W
Status flag impact: Z DC C
Note: The w register value and the 8-bit immediate number are added, and the result is placed in the W register.
Command example:
Movlw 0xaa; W = 0xaa
Addlw 0x11; W = 0xaa + 0x11 = 0xbb
Sublw immediate count minus W register
Syntax: sublw K
Operand: K is an 8-
mplab IDE and allows Debugging Using online simulators and online debugger. The default installation directory is c: \ mcc18. After the installation is complete, open the language tool mounting Settings dialog box. You can also see the interface shown in 4.
When using mmc18 programming, you must add the connector script file (*. LKR) and header file (*. h) at the same time ). The connector script file mainly provides the storage space available for the connector and how to use the space, which
file that can be programmed.Example:#include __eeprom_data (0,1,2,3,4,5,6,7);The macro has 8 parameters, representing 8 data values, each with a value of 1BYTE. Unused values are specified as zero, or the compiler will give an error.Each time it is used, the __eeprom_data will be written from the EEPROM address zero and automatically incremented by 8.If you want to use more data, you can define the required number of EEPROM data by calling the macro multiple times. It is a good idea to put the
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