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Djnz r1

WebAug 26, 2011 · 2. DJNZ ：这是另一条指令，我们来看一下这条指令后面跟着的两个东西，一个是 R6 ，一个是 D2 ， R6 我们当然已知是什么了，查一下 D2 是什么。. D2 在本行的 … http://www.ee.ncu.edu.tw/~jztsai/EE3046/lecture/8051%20-%20Conditional%20Jumps%20and%20Time%20Delays.htm

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Webdjnz r0,$ pop 0000h ret;***** mov dq,c ; write dq mov r1,#09h ; delay 20us wait for ds18b20 sample djnz r1,$ ; setb dq setb stlpw mov r1,#30h ; delay 100us for recover djnz r1,$ ; djnz r0,wrwire_1 mov a,#skiprom ; lcall wrwire ; mov a,#convert ; lcall wrwire ; lcall t1s ; wait for convert complet. lcall init ; read temperature mov a,#skiprom ... WebApr 9, 2024 · 指定存储器中某块的起始地址和长度，要求能将其内容清零的单片机程序. org 0000h. mov r7,#n;长度. mov r0,#addr;起始单元地址 lake tahoe baseball tournament 2022 https://compare-beforex.com

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WebApr 30, 2010 · org 0000h mov a ,#11111110b start : mov p1,a mov p2,a mov r2,#5 call delay rl a jmp start delay : mov r0,#00 mov r1,#200 loop : djnz r0,loop djnz r1,loop djnz r2,delay ret end this LED run from right to left delay each change is 0.5 sec . i will appreciate if u comment to my code. WebMOV R1,#0 MOV A,#0 MOV R0,#25H AGAIN:ADD A,#0ECH JNC HERE HERE: INC R1 DJNZ R0,AGAIN MOV R0,A END. a) F3,02 b) F9,01 c) E9,01 d) E3,02 View Answer. … WebNov 2, 2010 · djnz r6,x5 ret ..... rectify this code to blink 2 leds with 555 timer.555 is connected with p3.7 of at89c2051. that 555 is controlling externally the blinking rate.the 50k preset is connected with ne555. that preset is main controller to increase decrease of … jenis liquid untuk pod kuy

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Djnz r1

DJNZ R1,$ $代表什么意思 R1内容不为0 然后怎样？_百度知道

WebJan 6, 2024 · mov r1,#03h;用于控制循环次数. mov dptr,#20h. loop: mov a, @r0. movx @dptr , a. inc r0;片内ram地址加一. inc dptr；外部ram地址加一. djnz r1,loop；未循环完3次，跳回继续移数值. sjmp $；停止. end. 编程将片外ram的1000h单元开始的100个字节的数据相加，结果存放于r7r6中： mov r6, #0. mov r7, #0 WebApr 9, 2024 · 单片机：编写十字路口交通灯程序 #includereg52.h#define uchar unsigned char#define uint unsigned int//sbit BI=P3^4; //74Ls49的消隐引脚sbit DXR=P1^0; //东西红...

Djnz r1

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WebDec 15, 2013 · microcontroller solutions call delay clr p2.7 call delay sjmp again delay:mov r1,#240 here:djnz r1,here ret end 22.org 0000h setb p1.4 here:jnb p1.4,here cmd:setb p2,7 call delay clr p2.7 call delay sjmp cmd delay:mov r1,#240 here:djnz r1,here ret end 23.org 0000h setb p2.1 here:jb p1.4,here mov p0,#55h sjmp $ end 19. WebDJNZ R1,LOOP // The count "N" is checked to zero (to know if all the numbers upto N are generated). STOP: SJMP STOP // Run infinitely here or end of program execution. These 3 programs will be enough for a “kick start” in 8051 programming. More programs and concepts will be explained in upcoming articles.

Web本文（ 单片机原理接口及应用李群芳版习题解答参考.docx ）为本站会员（ b****6 ）主动上传，冰豆网仅提供信息存储空间，仅对用户上传内容的表现方式做保护处理，对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私，请立即通知冰豆网（发送邮件至[email protected]或直接QQ ... WebThis site uses cookies to store information on your computer. By continuing to use our site, you consent to our cookies. If you are not happy with the use of these cookies, please review our Cookie Policy to learn how they can be disabled. By disabling cookies, some features of the site will not work

WebJan 24, 2024 · LCALL DELAY ;call the Delay subroutine JMP FORLOOP ;after 3s jump back to the for loop DELAY: ;delay of 250 x 250 x 24 instruction cycles = 3000000ums = 3s MOV R3, #1d L3: MOV R2, #1d L2: MOV R1, #1d L1: DJNZ R1, L1 DJNZ R2, L2 DJNZ R3, L3 RET ENDLABEL: END WebJan 27, 2024 · DJNZ是单片机汇编的一条指令，是循环转移指令。eg: DJNZ R6, ... (R1)先减1，如减1后(R1)≠0，则跳转到目标语句；否则顺序执行。就是说R1中的内容减一后不 …

WebNov 8, 2011 · 单片机里DJNZ代表单片指令。. DJNZ RN,REL 是一条件转移指令，先将工作寄存器Rn中的数减“1”，判断结果是否为“0”，不为“0”程序就跳转到行标为REL的地方执 …

WebSep 25, 2014 · If the XTAL frequency of 8051 is 8 MHz, find the time taken to execute the following program: MOV R2,#04 MOV R1,#06 WAIT: DJNZ R2, WAIT. MOV R2, #04 Machine cycle-1 MOV R1, #06 Machine cycle-1 WAIT: DJNZ R2, WAIT Machine cycle-2×4 The 8051 Microcontroller based Embedded Systems, First Edition. jenis listrikWebApr 2, 2024 · To transfer data in RAM, R0 and R1 registers are applicable for 8051 assembly language programming. In this method we will load base RAM address i.e. 50H to R0 … jenis liquid untuk pod ursa nanoWebDescription: DA adjusts the contents of the Accumulator to correspond to a BCD (Binary Coded Decimal) number after two BCD numbers have been added by the ADD or ADDC … lake tahoe basin management unit mapWeb单片机—DJNZ 指令练习. 1、 延时 假设fosc=12MHz，则一个机器周期为1us,若要求达到10ms延时。. 2、 闪烁灯 在P1.0端口上接一个发光二极管L1，使L1不停一亮一灭， … jenis lm ubs 1 gramWebIn this code R1 acts as a counter. The counter value is initialized i.e. 10 HEX is loaded to R1. In each iteration, the instruction DJNZ decrements R1 by one until it becomes zero. This … lake tahoe basinWebQuestion: DELAY: LOOP1: LOOP2: LOOP3: ORG 0100H MOV RO, A MOV R1, #250 MOV R2, #250 NOP NOP DJNZ R2, LOOP3 DJNZ R1, LOOP2 DJNZ RO, LOOP1 RET a) Using the MCS-51 opcode map, convert the above DELAY subroutine into the corresponding machine codes. [2 marks] b) Determine the total number of bytes of the above DELAY … jenis loan rumahWebApr 22, 2024 · mov dptr，#1000h mov r1，#100（#64h） clr loop：movx @dptr，a inc dptr djnz r1，loop sjmp 143．在两个8051 间用模式 进行串行通信，a机并行采集外部开关的输入，然后串行传 输给b机；b机接收后并行输出控制led发光。画出连接示意图，写出完整的程序。 lake tahoe banner