raspberry microcomputer

Raspberry Pi Development Notes (1): Start Raspberry Pi 3b and run the Raspberry Pi system, raspberry 3b Raspberry Pi Development notes(I): Start Raspberry Pi3bThe Raspberry Pi system

This article is original by purplesword (jzj1993). For more information, see. Original web site http://blog.csdn.net/jzj1993 This section describes how to identify the PIN numbers of an integrated circuit. Here we will briefly understand the specific functions of 40 pins of 51 single-chip microcomputer. Readers who have never been familiar with complex electronic components may feel very difficult, but they do not need to be afraid. 　　 Accordin

operations, or even use cron to regularly execute these operations. Address: http://www.raspberrypi.org/documentation/linux/filesystem/backup.md How Can I copy the SD card on Raspberry Pi to another SD card? Read it with win32diskimage and write it again. I will back up the system.How is Raspberry Pi used? It's not easy to use. Please tell me if you have used it. Thank you. What I said upstairs is wron

short y;unsigned short *buffer;unsigned short *oldbuffer;unsigned int len;unsigned int count;int sendNewPos=1;x = item->pages[index].x;y = item->pages[index].y;buffer = item->pages[index].buffer;oldbuffer = item->pages[index].oldbuffer;len = item->pages[index].len;dev_dbg(item->dev,"%s: page[%u]: x=%3hu y=%3hu buffer=0x%p len=%3hu\n",__func__, index, x, y, buffer, len);//Only update changed pixels in the page.for (count = 0; count There are also a series of definition commands and initializati

circuit has obvious advantages. This is the root cause for the wide application of digital circuits. The introduction of digital circuits ends here. More details will be provided in the principles section. In fact, the nature of single-chip microcomputer is also a digital circuit. The traditional digital circuit we want to talk about below refers to a digital circuit other than a single-chip microcomputer

This article by the Raspberry Pi Fan itjoker editor, reprint please indicate the source. I also have Sina blog is also Raspberry Pi fan itjoker may name less it ...Required Materials: Raspberry Pi 2B or more than 2B, l2985n Drive board, a number of cable, battery and battery box, USB wireless card (free drive), USB camera (free drive). Required environment:

Reprint: http://shumeipai.nxez.com/2014/05/04/under-windows-serial-connection-control-raspberry-pi.htmlIn the absence of a keyboard mouse monitor, no network devices, even the power and micro USB data cable are not in the case. How to operate the Raspberry Pi, or even install the configuration Raspberry Pi?If you have a USB to TTL serial data cable, and a compute

Turn the Raspberry Pi into a Web server, you can control the Raspberry Pi by visiting the Web page, for example: Check the camera \ Turn on the light and so on.The thought of Linux Web server, the first thing we think of IS, Apache + MYSQL + Php.Raspberry Pi can install this lamp series, but Apache and MySQL for Raspberry Pi This small machine, is too heavy, main

Raspberry Pi Raspberry Pi wireless NIC configuration [multiple method alternatives]To make the Raspberry Pi convenient operation, it is necessary to configure the wireless network card, which can greatly enhance the mobile and convenience of Raspberry Pi, in fact, the configuration of wireless network card is basically

The timer is a very important function for each MCU. To implement a precise timer, measure the frequency, and generate a PWM, the timer depends on the timer. The number of timer digits determines the timer precision, currently, we have encountered an 8-bit timer, a 16-bit timer, and a 32-bit timer. Features are more powerful than others. The higher the number of digits, the higher the accuracy of PWM, the more delicate the changes, easy to control. For at89x51, there are two timers T0 and T1, An

There is no IDE like Keli in Linux to develop 51 single-chip microcomputer, development environment can only build themselves.First step: Install the cross-compilation toolA) Install SDCCsudo apt-get install SDCCb) Test SDCC is available, this is a simple test.c on the Internet to find the code of the running lights, to test1#include"8051.h"2 3 #defineUINT unsigned int4 #defineUchar unsigned char5Uchar tab[8] = {0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80

The External Interrupt of single-chip microcomputer has also been enhanced by other single-chip microcomputer, which is not triggered by a simple descent edge. Currently, high and low level triggering is triggered, and the rising edge and falling edge are triggered, more level changes are triggered. At present, the development is basically complete, and the external interrupt function is very great. It can

51. 52 single-chip microcomputer matrix keyboard, 5152 single-chip microcomputer Matrix To learn about the matrix keyboard, first make a small experiment: After you press the matrix keyboard, the digital display displays the number of keys that are pressed. My matrix keyboard is 4x4. The operating principle is to first check which line of key is pressed. Then determine the column. In this way, you can ident

51 Single-Chip Microcomputer timer simple example, 51 Single-Chip Microcomputer Timer The first time I wrote a blog, I don't know. Forget it. Just stick the Code directly. 1 # include

I can see this question. A lot of people may need to hit the stone brother's board. What is the value of 7 + 5? How do you teach this? But in single-chip microcomputer, numbers are used Binary representation: This is just a bit of a logging/ Even though we have not learned a command for teaching materials. However, I mean to do a few experiments first to increase your interest in single chip microcomputer.

You can see usart in many data manuals. UART, SPI, IIC, USB, and CAN communication are messy. You know this is sharp. Serial Communication, there are data formats and data transmission rates. At present, many single-chip computers have UART, especially 51 in our university, which is everywhere on the network. So if I think about it, I will also flood it, or I will forget it later, haha. 51 The serial communication is relatively simple. Set the transmission mode: Mode 1 The baud rate is set. The

This article describes how to install Python and OpenCV on Raspberry Pi 2 or Raspberry Pi B +. it is based on the GTK library and uses Python2.7 and OpenCV2.4.X as an example, if you need a friend, refer to my Raspberry Pi 2 which was just delivered yesterday. this guy looks very cute. This guy has a 4-core MHz processor and 1 GB memory. You know,

My Raspberry Pi 2 just arrived yesterday, this guy looks very small and cute. This little guy has 4 cores 900MHZ of processor, 1G RAM. You know, Raspberry Pi 2 is much faster than most computers in my high school computer lab. Anyway, since Raspberry Pi 2 was released, I've received a lot of requests that I can write a detailed description of how to install Ope

Python and OpenCV installation tutorial on Raspberry Pi 2 or Raspberry Pi B +, pythonopencv My Raspberry Pi 2 just arrived yesterday. This guy looks cute. This guy has a 4-core MHz processor and 1 GB memory. You know, Raspberry Pi 2 is much faster than most computers in my middle school computer lab. Since the release

The initial start of the Raspberry Pi requires the following steps:Install system image to SD cardConnection Configuration Raspberry PiConfigure Remote Control Raspberry PiThe materials to be prepared are as follows:More than 16G high-speed storage SD card one. (Please note that the Raspberry Pi 3 uses micro card, the