pic16f877 microcontroller

The following code is a single-chip microcomputer program, 51 microcontroller, compiler for ht-ide3000,Simply put,Can only be stated in the header file,When the variable is declared in the header file, add the extern keyword to tell the compiler that the variable is defined in other files,Enum is not a variable, it is a data type we define ourselves, like int char, but we define it ourselves, so we don't have to add it.1 externU16 G_u16timebasecount;2

contrast, the MCS-51 microcontroller command system has a total of 111 commands. The introduction in this book is mainly aimed at the 8-Bit Microcontroller PIC16F877 of the mid-range Microchip Company, which has the on-chip (On-Chip) EEPROM data storage and flashProgramMemory, which can realize in-circuit debugging and In-circuit serial programming. With the hel

MSP430 microcontroller adconverter 20:14:05 | classification: MSP430 microcontroller | report | font size subscription I. Brief Introduction: The adc12 module consists of the following parts: the input 16 analog switches (eight external channels, four internal channels), the ADC internal voltage reference source, the adc12 kernel, and the ADC clock source, collection and holding/trigger source, ADC data out

. Void main () { ...................................... // Program subject } Compile the program and then use the burning tool to burn it into the microcontroller. Please note that idloc (x) contains a maximum of two hexadecimal bytes. the excess part will be invalid. For example, if you write 987fe3, E3 will be lost. In addition, let's talk about how the two hexadecimal numbers are stored in the ID area. We already know that idloc (x) can cont

Design of universal USB Interface Module Based on AVR Microcontroller [Date:2008-6-25] Source:China Power GridAuthor:Zhang Hong, Dong xiucheng [Font: large, medium, and small] 1 Introduction USB interfaces have become one of the main ways for peripherals to communicate with PCs due to their fast data transmission, simple connection, easy scalability, and support for hot swapping. With the development of embedd

Microcontroller Remote Control stepper motor, LED lights and buzzer The stepping motor module, LED lamp and buzzer module of the single-chip microcomputer are controlled by the C # language to enable the stepping motor to perform forward, reverse, and stop and control the speed; the LED lamp module performs selective breathing expression; the start and end of the buzzer module. The host computer controls the stepper motor, LED lamp, and buzzer module

First, prefaceFinally completed the Windows universal application "51 microcontroller assembly", six months ago began to play WindowsPhone development of the first real meaning of the app (also many shortcomings =_=). Development from mid-January to the end of the test to today, during the internship for half a month, play a few days, calculate the basic get 3 weeks. Not much to say, summary summary.Second, the development of data preparationThe main

1. Atmel (Atmel Semiconductor)Atmel is a semiconductor company founded in 1984 in the United States. The main products include microcontrollers, touch solutions (capacitive touch products), automotive electronics, wireless connectivity devices, metering devices, memory, security integrated circuits, digital broadcasting and so on.1.1. Atmel Microcontroller:The Atmel offers four types of microcontrollers: Atmel AVR 8-and 32-bit microcontrollers Atmel Smart Arm-based microcontrollers (Sma

1, MCU, MPU: Mcu:micro Control Unit (microcontroller unit) Mpu:micro Processor Unit (microprocessor unit) The MCU integrates the on-chip peripheral devices, the MPU without peripheral devices (such as memory arrays), is a highly integrated general-purpose processor, and is the MCU that removes the integrated peripherals.2, MCU, MPU, DSP: Dsp:digital Signal Processor (Digital signal processor) The biggest characteristic of MCU differs

access is different. Idata is accessed in a pointer-like manner in C. The statements in the assembly are: Mox ACC, @Rx. (Unimportant supplement: C-Idata do a good job of pointer-type access)XData: External extended RAM, generally referred to as external 0x0000-0xffff space, accessed with dptr.pdata: Low 256 bytes of external extended RAM, address reads and writes on A0-A7, with Movx ACC, @Rx Read and write. This is more special, and C51 seems to have a bug, it is recommended to use less. But al

I saw some good articles. Because the attachment is too large, I had to directly transfer it and leave an address. Http://www.soeol.com/downs/news/2008/7-12/2008712102653.htmlHow picmcu worksHttp://www.soeol.com/downs/news/2008/7-7/200877175043.htmlPIC microcontroller principle and Program DesignHttp://www.soeol.com/downs/news/2008/7-7/200877173702.htmlPIC microcontroller subroutine set [/url]Http://www.so

Source: As long as the microcontroller has a true unique ID, you can make encryption indestructibleHttp://www.amobbs.com/thread-5518980-1-1.htmlFirst ring:ID-->F1 (ID)---"IDX,The ID is converted to an integer idx by a custom algorithm F1, F1 is an irreversible operation and cannot be easily analyzed, which is actually easy to implement.Then, save the IDX to the EEPROM or flash anywhere, we can read this number by compiling a function get_idx ().Second

# # dmem_total_size (dmem_block_size*dmem_block_num)///Memory Total size typedef enum{ Dmem_free = 0, dmem_used = 1,}dmem_used_item;typedef struct{Dmem_used_item used; Use state uint16_t blk_s; Starting block ordinal uint16_t blk_num; Number of blocks}dmem_apply;typedef struct{Dmem_used_item Tb_blk[dmem_block_num]; DMEM Tb_user[dmem_block_num]; User request memory information dmem_apply Tb_apply[dmem_block_num]; The system allocates memory information uint16_t

void Timer0_isr () interrupt 5 {countmilliseconds + +; // is only responsible for self-addition, add to the maximum and start again from 0 }u16 Setdelay (U16 t) { return ( Countmilliseconds + T-1 ); }u8 Checkdelay (U16 t) // returns a nonzero representation Timed end { return (((T- countmilliseconds) 0x8000 ) >> 8 ); // } Use 1: (more general usage)void Delay_ms (U16 W)// delay How many ms{ u16 temp ; = Setdelay (w); while (!

Tags: style blog HTTP color Io OS AR for file Lights up an LED light on the ARV microcontroller Development Board Schematic: Analysis: The above figure shows the connection principle between the single-chip microcomputer and the LED lamp. Among them, J6 is a blocking function, which can throttling to prevent the LED from burning out when the current is too large. The internal resistance is a set of parallel resistors: Tip: Calculate the size of the

few microcontrollers include a DAC. Although you can easily find a inexpensive DAC to control from your microcontroller, you can use, unused peripherals inste Ad of adding parts. Fortunately, you can convert a microcontroller ' s ADC channel along with a GPIO (general-purpose input/output) pin to a D AC. You can make a DAC by charging a capacitor to an analog level by driving it high. You can also discharge

The malloc () function in C language is used to dynamically allocate a space in the memory to store data. It is very useful for applications that need to dynamically allocate memory during program execution. The Microchip compiler C30 (16-Bit Microcontroller) and C32 (32-Bit Microcontroller) also began to implement this function in a newer version, this adds a lot of flexibility to the programming of a sin

Abstract: The Real-Time Multitasking system mechanism and performance are described comprehensively, and a method to realize this Real-Time Multitasking mechanism is proposed: the time slice rotation scheduling method. This scheduling algorithm is implemented in microcontroller and an example of its application in the train gate friction coefficient test system is provided.Keywords:Real-Time Multitasking; time slice; rotation scheduling;

ATMEL Corporation announced the launch of its AT91CAP7A-STK entry-level development kit, designed to evaluate its ProcessorCustom cap Microcontroller(MCU) series of entry-level tools. The custom MCU of cap7 allows designers to transfer from the "ARM7 and FPGA" design to a low one-time R D cost (NRE) Single ChipSolution: the cost per device is reduced by about 30%, and the performance is improved by 8 times. The static power consumption and working po

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