avr 4311

Source: http://blog.sina.com.cn/s/blog_493520900100bpos.html Question How to reset the AVR via software? Answer if you want to reset the AVR by software, you should use the internal watchdog. Simple to enable it and let it overflow. When the watchdog is triggered, the program counter returns to 0, clearing all registers and other tasks that are being pe

(inti =0; I ) - { - intxx =point[i].x; the intyy =point[i].y; - intPOSX = Upper_bound (x, x + N, xx)-x;Wuyi intPosy = Upper_bound (y, y + N, yy)-y; thell tmpx = (ll) posx * XX-SUMX[POSX-1] + sumx[n-1] --Sumx[posx-1]-(LL) (N-POSX) *xx; Wull tmpy = (ll) posy * Yy-sumy[posy-1] + sumy[n-1] --Sumy[posy-1]-(LL) (n-posy) *yy; About if(Tmpx + Tmpy ans) $ { -Ans = tmpx +Tmpy; - } - } Aprintf"%i64d\n", an

Topic linksSerious solution:Given the coordinates of n points, find a point, and the smallest distance to other points of Manhattan.n can be 100000.An O (NLOGN) algorithm is probably needed.The Euclidean distance can be calculated by dividing X and y to calculate the prefix and to determine the distance from one point to another within the O (1) time.#include Narrowing the scope method:Another way, I thought so, but later did not dare to pay, I think it will WA.Because it is not very reliable in

() - { - ints=0, fh=1;CharCh=GetChar (); the while(ch'0'|| Ch>'9'){if(ch=='-') fh=-1; ch=GetChar ();} - while(ch>='0'ch'9') {s=s*Ten+ (ch-'0'); ch=GetChar ();} - returns*fh; - } + BOOLCMP (node Aa,node BB) - { + returnaa.aBB.A; A } at intMain () - { - intt,n,i; - LL mn,sum,sum1; -t=read (); - while(t--) in { -n=read (); to for(i=1; ii;} +Sort (x+1, x+n+1, CMP); -Sort (y+1, y+n+1, CMP); theqx[1]=0; qy[1]=0; qx1[1]=0; qy1[1]=0; * for(i=2; i) $

(c (m). Y) * Q (i). y);if (K Ans[_q[i]] = max (Ans[_q[i]), LL (C (M). x) * Q (i). x + ll (c (m). Y) * Q (i). y);Break ;}(K }}}void Work () {Build (Root = pt++, 1, N);For (T = 0; T pn = 0;Solve (Root, 1, N);for (int i = 0; i }void Init () {N = Getint ();qn = vn = 0;memset (_q,-1, sizeof _q);for (int i = 1; I int t = getint ();if (t = = 3) {_q[i] = qn;q[qn].x = Getint (), q[qn].y = Getint ();Q[QN++].P = i;} else if (t = = 1) {v[vn].x = Getint (), v[vn].y = Getint ();V[VN].L = i, V[VN++].R = N;} e

the distance and equal to its front of the number of points multiplied by its own again minus the front of a bit and, Do you think it's time to ask for a sequence of numbers and we go through the sequence of numbers, and by this method we get a point to the point in front of it with O (n) and then go backwards through the sequence with similar thoughts to the distance to the point behind it, plus the line.There is also a separate x, y sort sum, but you can do this: first directly to find the fr

,pos; A} n[100005]; atll sumx[100005]; -ll sumy[100005]; -ll ans1[100005]; -ll ans2[100005]; - intEXM; - BOOLCMP1 (structNode AA,structnode BB) in { - returnaa.xbb.x; to } + BOOLCMP2 (structNode AA,structnode BB) - { the returnaa.ybb.y; * } $ intMain ()Panax Notoginseng { - while(~SCANF ("%d",t)) the { + for(intI=1; i) A { thescanf"%d",EXM); +memset (N,0,sizeof(N)); -memset (ANS1,0,sizeof(ans1)); $memset (Ans2,0,sizeof(ANS2)); $ for(intj=1; j) -

! HDU 4311 minimum Manhattan distance-Thinking timing-(separated and sorted by horizontal and vertical coordinates), hdu Manhattan Question: There are n points. Start from a point in the n points and find the distance and minimum value of the Manhattan point. Analysis: Brute-force enumeration times out again. This type of question is generally considered, and most of them use skills to find an efficient method. I personally think this question is sim

Overview I think this is meaningless. The biggest feature of an embedded system is "embedding". That is to say, your control system is embedded in your control object, so the first thing is to obey the needs and features of objects. What is the basis for separation from object null? Each MCU has its own value, and each user's choice has its own rationale. Starting from aVR, It is a selling point of a single clock period command, compared with the cla

I will not talk much about it. I will first copy an introduction from the official website. The new atmel avr Studio 5 Atmel avr Studio 5 is the integrated development environment (IDE) for developing and debugging embedded atmel avr applications. the AVR Studio 5 ide gives you a seamless and easy-to-use environment to

Implementation of avr-libc malloc/free, Avr-libc is the C Language Runtime Library of the AVR Microcontroller. It provides the AVR version of the GNU Toolset (Binutils, GCC, GDB, etc .), it is a project under nongnu.org and released with Modified BSD License. You can download the source code on your website: Home Page:

rejected the full support of C, so the current MinGW is the best choice, of course, you can choose Codeblocks, C-free and so onThe above installation is relatively simple, on-line search related blog can, need to note is to add the necessary system environment variables. For this I made a plugin using a batch script, so please look forward to my other posts.Other related blog posts are recommended:Build Eclipse IDE AVR development PlatformBuilding

IAR for AVR Study Notes (1) -- data type (compiler supports ISO/ansi c basic data types and some additional data types) 1.1. The bool data type of integer data is supported by default in C ++. If you include stdbool. h In the header file of the C code, the bool data type can also be used in the C language. You can also use boolean values false and true. 1. 2. Floating Point Data Type: . Pointer type: pointers include data pointers and function pointe

Under Ubuntu research Arduino discovered, originally can not use Arduino IDE development, Linux also has GCC-AVR Direct development AVR series Controller.So, can't wait to see the relevant information, summarize the steps to install the GCC-AVR.PS: Sigh, now that Ubuntu is doing is too easy to use, before very much to worry about things, now is very simple.1, update the system, and install the development p

Note: 1) host environment: Ubuntu10.102) Linux User: root1. install gcc-avr compiler 1.1 to start the "New Software Package Manager", enter "avr" in the search box, and choose to install three software packages: "binutils-avr", "avr-libc", and "gcc-avr", as shown in Figure 1

Simple and Convenient! The AVR Microcontroller has many advantages. I am also a loyal supporter, from 51 to AVR. I also learned PIC in the middle. I bought a learning board, LCD screen, and many other things when I was a beginner at 51. After my experience, when learning AVR, I started from the self-made download line. Note that this is just the beginnin

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

Document directory 3.2.1. Use of syntax 3.2.1. Start Design 3.2.3. Compile ATMEL's AVR single-chip microcomputer is an enhanced type of single-chip microcomputer used to carry flash in the memory. The flash memory on the chip is attached to the user's products. It can be programmed and programmed at any time, making the user's product design easy, easy to upgrade. The AVR Microcontroller adopts an en

Because the system has its own hid driver, it eliminates the need for upper-computer driver development. For some simple devices, this is a very classic implementation solution. This article involves a lot of content, from the development of lower-computer hid devices to the Development of upper-computer application software.Starting from the AVR-HID, The AVR-HID uses USB hid standard to achieve USB communi

This page presents some advice regarding adding a JTAG connector to your avr-based system during design. The Atmel JTAG ICE User ' s Guide was the definitive source of information on this subject and nothing here should be taken T o contradict or supercede it. The JTAG HeaderThe picture in right shows the layout of a JTAG ICE connector on a target system. Pin 1 is located near the edge of the board, which are at the top of the picture. This means, Ecr