Hi... Am new to this site... please can any one help me... I need to interface AT24c64 with 89c52. here is my asm code... i cannot write even 00h to eeprom. please debug my code and guide me...
org 0000h sjmp start start: mov p1,#0ffh ; initializing…
Dear friends,
sorry in the bad first massege.
I still needed to build a man door with arm.I searched rfid shields butthat work from 10cm distance which is too small. then I looked after other rfid reader/tag solutions not for people, and I could…
doc.nit.ac.ir/.../3-Mazidi-8051.pdf
HI friends! Their is a small problem can any one plz resolve it......... when i load the hex file in G540 hex file burner it just only loads three bytes can any one plz help me out what this problem is? i am using windows 7 64 bit.....
does 64 bit…
sir My projects are mostly used AT89c2051 uc, Please tell me which keil product (C51,C251) for sutable me.I need to helpfull for PWM purpose also
Thanks
Ajitkumar
HELLO ALL,
I have a problem with a floating point number. How can 12.11 become in 2142.11000000000013 (I look in debug).
I refer in this case too.
I know floating point is a big problem for any other computer. but is a lean answer always not right…
we are using ASK module RF transmitter and receiver and AT 89c51 controller..... i need to transmitt the data from PC to trnsmitter and receive it in the receiver side and display in LCD display... how the PC and transmitter is connected....by what means…
I am trying to use a conditional break-point on a xdata variable. I want to trigger the break-point whenever the variable is written. I am using SiLabs c8051F361 controller. Is it possible to set such a kind of break-point while debugging? The manual…
OMF51 is open and downloadable, but where i can find OMF251 spec? Thanks
Hi.. Is there any RTC that working in the basis of SPI,that avail in the Proteus.I have tried for ds3234..can be body suggest me.
Thanks in advance.
hi..can any body tell,the expression s=((a/16*10) + (a%16)) belongs to which conversion?????
Dear neil, whats the difference between eeprom 24C01, 24C02, 24C04, 24C08, 24C16 .
Hi,
I have problems with my Hex file generated by uVision 4.
My original project built in uVision V1.31 was generating an Hex file to work on a 80C251SB16
Now that I have rebuilt my project with the same code files in uVision V4, there seems to…
hi sir, i am new to this rtc ds1307 and want to know dat according to its datasheet it is battery backed....does that mean that you need not initialize it when you use it for the first time?????
and if i want to simulate it on proteus software it shows…
Dear All,
I'm thinking about using global register coloring option but can't be sure of what potential problems might come up after implementing it.
I'm using C251 compiler for SLE70 family.
I've heard that global register coloring…
Hi Everyone,
I'm using C251 compiler with optimization level 9 with 'size' emphasis. I've a function similar to one given below.
int * fun(short* param1, Boolean param2){
//..........code goes here } This function is being called…
because projects need, i have to import ?C?LIB_CODE twice.(One LIB_CODE start at 0xF80000, another start at 0xFD0000). The usr code call function in LIB_CODE which is in 0xF80000, sys code call functions in LIB_CODE which is in 0xFD0000. For the needs…
Hi all
what are basic differences between the 8051 family and the 80251 family ?
Are they close family relatives?
Thanks Eliahu
Hello everyone,
I am working on a project for prepaid electricity billing system using gsm modem, this is the source code, but I don have the header files. Can anyone mail the appropriate header files for this source code.
I basically need lcd.h…
hi..nice to meet u all..i'm hidayah..i need a help about my project.i'm using microcontroller 8051, P89V51RD2 BY NXP PHILIPS.my project quite same to this link ece-projects.blogspot.com/.../injection-pump-using-microcontroller.html u can download…
Hi all, i have made a code in C language for my project Combinational lock using 80c51 micro controller and now i want to make .a51 assembler file of my code so that i'll be able to make .Hex file from it. what is the procedure to do this. please guide…
Hello!
I have problem with configuration of UART_1 on at89c51re2 micro controller I supposed that is because I am using a at89c51xd2.h header file which does not include definition for UART_1. When I try to define Sbit (ES1 , 0xB1, 3); in IEN1 (0xB1…
Hello! Hello! Hello!
. I just got my devboard working trough a viritual machine with windows XP running on it. And while i was looking for stuff i stumbled upon a page.
Now i have a few questions:
Exactly what will new code change to my board?…
my name is jamil.
what is this code?
GTWD2: MOV DPH,#WKPAGE ; MOV DPL,#APPTR ; MOVX A,@DPTR ; GET APP POINTER ISB MOV PORT2,A ; MOV DPH,#WKPAGE ; MOV DPL,#APPTR+1 ; MOV DPH,#WKPAGE ; MOVX A,@DPTR ; ADD A,#3 ; INCREMENT APE POINTER TO WD4 OF APE MOV…
can we execute the code in ram memory in lpc915...if yes,how?