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Isplay download Solution

Small board can also be used to burn the CPLD, but hex cannot be downloaded to the S52 microcontroller, then I use a programmer to burn the Hex file into the S52 chip, but the program on the Development Board still cannot run (no 0x55 data on the serial port ), it took me a whole day to understand this problem. Today, by accident, I put the burned chip on another board for use and found that the program can run normally, the serial port displays data 0x55. Therefore, we suspect that the hardwar

Android ble bluetooth development a little solution

= Mbluetoothgatt.setcharacteristicnotification (ale, True);LOG.D (TAG, "setnotification =" + set);BLUETOOTHGATTDESCRIPTORDSC =ale.getdescriptor (uuid.fromstring ("00002902-0000-1000-8000-00805F9B34FB"));Byte[]bytes = {0x01,0x00};Dsc.setvalue (bytes);Boolean Success =mbluetoothgatt.writedescriptor (DSC);LOG.D (TAG, "writing Enabledescriptor:" + success);}Else{Bluetoothgattservice Service =mbluetoothgatt. GetService (Uuid.fromstring ("49535343-fe7d-4ae

Python practices (five lists and dictionaries) and python practices

;>> Msg. format ("alex", 22)'My name is 22, and age is alex'>>> Msg = "my name is {name}, and age is {age }">>> Msg. format (age = 22, name = "ale ")'My name is ale, and age is 22'Format_map>>> Msg. format_map ({'name': 'Alex ', 'age': 22 })'My name is alex, and age is 22' Msg. index ('A') returns the index of the string where a is located.'9a'. isalnum () True '9'. Whether isdigit () is an integerName. isn

Python Functions (function)

,name= ' Bob '):# print (' Send to ', address, ' success ', ' contents ', content, ' name is ', name)# return True# while True:# em = input ("Input address:")# result = Send (em, ' SB ', ' ale ')# if result = = True:# print (' Send success ')# Else:# print (' Send failed ')#这里是定义了三个参数, where name is the default parameter, has a default value, but the argument passes two parameters, so name uses the default parameter# def send (address, content, name=

Python Automation Foundation "day02": Python Basics 2

(' a ') find A, Find returns its index, cannot find return-1 format: >>> msg = "My name is {}, and" was "{}" >>> Msg.format ("Alex", "Isa") ' My name is Alex ', and ' was ' >>> msg = "My name is {1}, and" was "{0}" >>> Msg.format ("Alex", "Isa") ' My name is ', ' and ' was Alex ' > gt;> msg = "My name is {name}, and age is {age}" >>> Msg.format (age=22,name= "ale") ' My name is ale, and Format_map >>> msg

Day2 Python learning Array, looping, string

is Alex;' ->>> msg ="My name is {1}, and age is {0}" the>>> Msg.format ("Alex", 22) - 'My name is a, and age is Alex' ->>> msg ="My name is {name}, and age was {age}" ->>> Msg.format (age=22,name="Ale") + 'My name is ale, and an IS' - Format_map +>>> Msg.format_map ({'name':'Alex',' Age': 22}) A 'my name is Alex;' at - -Msg.index ('a') returns the index of the string where A is located - '9aA

Hardware foundation of Linux driver Design (i.)

functions supported by the device. With CFI, new and improved products can be used to replace older versions of the product without modifying the system software.A Nandflah interface mainly contains the following information: I/O line: addresses, directives, and data are transmitted through this set of lines, typically 8-bit or 16-bit. chip start (Chip enable,ce#): If no ce# signal is detected, the NAND device remains in standby mode and does not respond to any control signals

Checkpoint/restart Technology on the Crak--linux

still depends on us. If it runs abnormally, there may be an error in dump Memory: for (i = 0, vm = p->mm->mmap; vm!=null; i++, VM = vm->vm_next) { unsigned char valid_mem; /* Dump the memory segment * /Valid_mem = Valid_memory_segment (regs, p->mm, VM); /* Dump pages and shared libs if we are allowed to * /if (! ( ((no_binary valid_mem) | | (No_shrlib !valid_mem)) (!) ( Vm->vm_flagsvm_write) | | (Vm->vm_flagsvm_mayshare)) vm->vm_file) { if (Dump_vm_area (f, p, VM

Python Development Learning A

name is Alex, and it is 22 '>>> msg = ' My name is {1} ' and ' age ' is {0} '>>> Msg.format ("Alex", 22)' My name is a, and is Alex '>>> msg = ' My name is {name} ' and ' is ' {age} '>>> Msg.format (age=22,name= "ale")' My name is ale, and the is 22 'Format_map>>> msg.format_map ({' name ': ' Alex ', ' age ': 22})' My name is Alex, and it is 22 'Msg.index (' A ') returns the index of the string where A is

The RE module in Python

RE Module (* * * * *)In essence, a regular expression (or RE) is a small, highly specialized programming language (in Python) that is embedded in Python and implemented through the RE module. The regular expression pattern is compiled into a sequence of bytecode, which is then executed by a matching engine written in C.Character match (normal character, metacharacters):1 Ordinary characters: Most characters and letters will match themselves>>> Re.findall (' Alvin ', ' Yuanalesxalexwupeiqi ')[' A

The tracking __linux of several states of Linux PHY

invoked at all times in the PHY state machine function, so be aware of it. The code is as follows: static void Cpsw_adjust_link (struct net_device *ndev) {struct Cpsw_priv *priv = Netdev_priv (ndev); bool link = false; for _each_slave (Priv, _cpsw_adjust_link, Priv, link); if (link) {netif_carrier_on (Ndev);//notify the kernel subsystem network that the current link is ok if (netif_running (Ndev)) Netif_wake_queue (Ndev);} else {netif_ Carrier_off (Ndev); Notifies the kernel subsystem network t

MySQL Database learning "seventh" single-table query

WHERE condition constraint to take the record out of the tableGroup BY is then grouped by default, without groupingAnd then do the aggregationThe final Select resultsExample: select COUNT (*) from employee; Select COUNT (*) from employee where depart_id=1; Select Max (Salary) from employee; Select min (Salary) from employee; Select AVG (Salary) from employee; Select sum (Salary) from employee; Select sum (Salary) Form employee WHERE depart_id=3;Ix. additions to where (usin

Python-day11 Mysql Data class operation

Data class Operation # # #insert#=====INSERT into student (sname,gender,class_id) VALUES (' ls ', ' Male ', 1)Insert into Class (caption) VALUES (' Python1 class ')Insert into teacher (tname) VALUES (' Alex ')Insert into course (cname,tearch_id) VALUES (' Python ', 1)Insert INTO score (Student_id,corse_id,number) values (4,3,60);update=====Update score set number=87 where sid=1;delete===Delete from score where sid=1;select====================select*from表select *from表whereid > 1selectnid,name,gen

Python BASICS (str, list, tuple), pythontuple

= "my name is {1}, and age is {0}" >>> msg.format("alex",22) 'my name is 22, and age is alex' >>> msg = "my name is {name}, and age is {age}" >>> msg.format(age=22,name="ale") 'my name is ale, and age is 22'format_map >>> msg.format_map({'name':'alex','age':22}) 'my name is alex, and age is 22'Num1 = [11,22, 33] num2 = (11,22, 33) # num3 = {'A' = 11, 'B' = 22, 'c' = 33} myStr = 'Hello

MongoDB Golang driver installation + First call to MONGO Command.

recommend MgO, then with the public bar, to GitHub on the search of MgO, installation download. GitHub Address: Https://github.com/go-mgo/mgo Website address: Http://labix.org/mgo Installation address:go get gopkg.in/mgo.v2 API Document Address: HTTPS://GODOC.ORG/GOPKG.IN/MGO.V2 Demo available on the website: Package Mainimport ( "FMT", "Log" " gopkg.in/mgo.v2" " gopkg.in/mgo.v2/bson") type person struct { Name String Phone String}func main () { sessio

Common oracle SQL Functions

(T_NAME)-------------ABCDEEE7 rows selected Replace the upper () function content with uppercase lettersSQL> SELECT UPPER (T_NAME) FROM test_partitioning2;UPPER (T_NAME)-------------ABCDEEE7 rows selected Ltrim () removes leading and trailing spaces (two leading and trailing spaces) SQL> select length (ltrim ('oracle '), length (ltrim ('oracle', '') from dual;LENGTH (LTRIM ('oracle ') LENGTH (LTRIM ('oracle ',''))-------------------------------------------------8-- The second parameter in ltrim

Golang uses mgo to connect to MongoDB

PHONE string} type Men struct {Persons [] Person} const = (URL = "192.168.2.175: 27017 ") func main () {session, err: = mgo. dial (URL) // connect to the database if err! = Nil {panic (err)} defer session. close () session. setMode (mgo. monotonic, true) db: = session. DB ("mydb") // Database Name collection: = db. C ("person") // If the set already exists, the system returns the number of elements in the/***** set ********* countNum, err: = collection. count () if err! = Nil {panic (err)} fmt.

Summary of methods for JS popup dialog box

Original: http://www.cnblogs.com/xiaofengfeng/archive/2012/10/20/2732784.html DOCTYPEhtml PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">htmlxmlns="http://www.w3.org/1999/xhtml">head>meta http-equiv="Content-Type" content="text/html; charset=gb2312" />title>三种弹出对话框的用法实例title>scriptlanguage="javascript">function ale(){//这个基本没有什么说的,就是弹出一个提醒的对话框 alert("我敢保证,你现在用的是演示一");}function firm

Golang MongoDB operation (MGO)

This is a creation in Article, where the information may have evolved or changed. Using MgO Http://godoc.org/labix.org/v2/mgo packagemainimport ( "FMT" "Labix.org/v2/mgo" "labix.org/v2/mgo/ Bson ") Typepersonstruct{namestringphonestring}type Menstruct{Persons[]Person}const= (URL= " 192.168.2.175:27017 ") Funcmain () {session,err:=mgo. Dial (URL) //Connection Database iferr!=nil{panic (ERR) }defersession. Close () session. SetMode (MgO. Monotonic,true) db:=session. DB ("MyDB") //database nam

Golang using MgO to connect MongoDB

element ******* temp: = person{PHONE: "18811577546", NAME: "Zhangzhehero"}//can insert more than one object at a time insert two person object err = collection. Insert (person{"Ale", "+55 8116 9639"}, temp) if err! = Nil {panic (err)}//***** query Single data ******* Result: = person{} err = collection. Find (Bson. m{"Phone": "456"}). One (AMP;RESULT) FMT.println ("Phone:", result.name, result.) PHONE)//***** Query multiple data ******* var person

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