• How to set and retrieve Portbits in uVision C

    Dr. Andreas  Alef
    Dr. Andreas Alef

    How can I set and retrieve bitwise in uVision C? Similar to assembler P1.0 addresses Bit0 in Port P0.
    I could not find any possiblility to do so unless I take the usual Bitaddressing techniques (masking and shifting)

    Please answer to andreas.alef@web…

    • over 16 years ago
    • Software Tools
    • Keil forum
  • How to print a message to hyperterminal.

    hello mrx
    hello mrx

    Is it possible to wirte a message to hyperterminal from my develop-kit?

    • over 16 years ago
    • Software Tools
    • Keil forum
  • CAN I COMPILE OBJ FILE

    WILSON f
    WILSON f

    HI
    iam new to microcontrollers, iam working on c8051f003,my question is can i compile obj file or can i extract assembly code from obj
    and save as .asm will it work


    regards
    wilson

    • over 16 years ago
    • Software Tools
    • Keil forum
  • How to obtain full assembly listing ?

    David Allan
    David Allan

    I am using Silabs Simplicity Studio along with Keil C51 COMPILER V9.53.0.0 and LX51
    V4.66.30.0.

    I am trying to configure a project so that it will produce a .COD file, that is a full
    assembler listing (with all addresses fixed). I set the optimization…

    • over 2 years ago
    • Software Tools
    • Keil forum
  • Using a NE555 for 12V boost to 24V to power an amplifier

    miyayoung
    miyayoung

    I'm trying to draw a supply scheme for a class D integrated amplifier.

    It requires 21V to 24V power supply and about 6/7A of current at 24V. The input is a car battery: 10V to 14.4V.

    I've a few questions:

    Is the NE555 usable for this scope…

    • over 3 years ago
    • Software Tools
    • Keil forum
  • Error Target DLL cancelled : Debugger aborted

    Mame THIAM
    Mame THIAM

    Hello,

    I am very new to Keil environment. I am using serial interface to connect to board for the target Dolphin Flip80251 Typhoon. In Debug tab, i use as Driver DLL (S251.DLL) and Dialog DLL (TP51.DLL). After Building my project, the debugger can…

    • over 1 year ago
    • Software Tools
    • Keil forum
  • I think it is a bug of keil5

    yan pengfei
    yan pengfei

    I think it is a bug of keil5 I have a workspace,built in uvision 4.22.0.0,with two prjects,one is testlib.uvproj,another is testcalllib.uvproj.I can also step into C files of lib file.but when I open this workspace in the uvision 5.25.3.0,built projects…

    • over 1 year ago
    • Software Tools
    • Keil forum
  • Floating point arithmetic - accuracy problem

    Praveen K
    Praveen K

    Hello,

    I am using 89C51ED2 for solving non-linear equations. I am facing accuracy problems while doing floating point arithmetic. The accuracy of floating point arithmetic is limited to 3 decimal points thus leading to an erroneous results after a…

    • over 3 years ago
    • Software Tools
    • Keil forum
  • Error L250 80c51

    sebastiaan knippels
    sebastiaan knippels

    With porting me program from SDCC to Keil I got rid of all compiler errors and now I am having me this linker error L250 (CODE SIZE LIMIT IN RESTRICTED VERSION EXCEEDED) and I do not know what I am doing wrong.

    The selected chip is an AT89C51
    In the…

    • over 2 years ago
    • Software Tools
    • Keil forum
  • C251 Compiler options for memory banking

    Chris Ponder
    Chris Ponder

    Hi,

    I am struggling with getting the compiler set up correctly and was wondering if anyone could please help.

    Our circuit uses an external flash memory configured for paging. All I am trying to do is get the blinky example code to run. I have compiled…

    • over 4 years ago
    • Software Tools
    • Keil forum
  • How to resolve *** error 129, line 1139: internal heap exhausted (32768)

    charan charan
    charan charan

    Hi ,

    I am Writing .ini file to modify the Global Variables with some time response, (I am using Signal to generate interrupts ) As I am exceeding the case values more than 60 I am getting this Error(192 Internal heap exhausted ).

    Can any one help…

    • over 5 years ago
    • Software Tools
    • Keil forum
  • WANT CODES IN ASSAMBLY FOR GSM CONTROLL

    AARTI ROHAN
    AARTI ROHAN

    SIR I WANT ASSAMBLY CODES FOR GSM BASED ROBOT CONTROLL USING MICROCONTROLLER 8051

    • over 5 years ago
    • Software Tools
    • Keil forum
  • Weird DWORD error

    Chris Ponder
    Chris Ponder

    Hi,

    I am stuck with a very strange error and was wondering if anyone can help. I have been given the task of updating a USB stack used in our firmware: elm-chan.org/.../00index_e.html

    I downloaded the latest source, linked it in to the poroject in…

    • over 4 years ago
    • Software Tools
    • Keil forum
  • 8085 processor

    Anushka Fonseka
    Anushka Fonseka

    how to create a hex file for 8085 microprocessor. I have the assembler file. But i could not find 8085 CPU in the project category

    • over 6 years ago
    • Software Tools
    • Keil forum
  • Struct Advance declaration ERROR C52

    Arnaud Sourdrille
    Arnaud Sourdrille

    /** Advance Declaration **/
    struct    enreg;
    typedef   enreg Ts_Enreg;
    
    /** Prototypes **/
    extern unsigned char  MyFunc_1( Ts_Enreg * objects );
    extern unsigned char  MyFunc_2( Ts_Enreg   objects[]);
    

    MyFunc_1 and MyFunc_2 prototypes are equivalent…

    • over 4 years ago
    • Software Tools
    • Keil forum
  • error C202 'P3_3' undefined identifier.. please tell me what changes to make in my program.

    Aayesha Mujawar
    Aayesha Mujawar

    I am getting this error: error C202 'P3_3' undefined identifier.. please tell me what changes to make in my program. I am using 89c51

    • over 4 years ago
    • Software Tools
    • Keil forum
  • How to use time. and capcom

    anne klon
    anne klon

    Hi
    I have some question about timer.If i recive one signal squarewave and i want to detect it only 1 period and i want to know the time of it .How i can do it .
    i haved tried to use capcom but i don't know how it work !!!!
    i have another question…

    • over 17 years ago
    • Software Tools
    • Keil forum
  • Need ICE for 80251SB16

    Gary Armstrong
    Gary Armstrong

    Need ICE for 80251SB16

    • over 4 years ago
    • Software Tools
    • Keil forum
  • interface eeprom AT24C32 with 89S52

    Gaurav Kothari
    Gaurav Kothari

    HI all,
    i need a small help from you all....
    i am trying to interface AT24C32 eeprom with 89S52.
    my problem is it works perfectly with proteus stimultion but when i tried to built the circuit it give me an error...
    code...
    Code:

    #include<reg51.h>
    #include…

    • over 4 years ago
    • Software Tools
    • Keil forum
  • Interface of 8052 (UART0) with EZUSB FX2 on keil board

    ASH SHAM
    ASH SHAM

    hi

    how do we interface a 8052 UART0 with EZUSB FX2(UART 0) on a keil board.

    thanks

    • over 18 years ago
    • Software Tools
    • Keil forum
  • Renumeration for EZUSB-FX2 failed

    ASH SHAM
    ASH SHAM

    Hi,

    I am working on our custom made board having EZUSB-FX2 chip using Keil IDE.
    After plug in the device Enumaration works fine and all the request for Default descriptor and COnfiguration are correct.

    But after Enumaration when I download my firmware…

    • over 18 years ago
    • Software Tools
    • Keil forum
  • ISR declaration for 80c51

    anand kumar
    anand kumar

    How can we declare an interrupt service routine(ISF) function in keil for 80c51??

    • over 5 years ago
    • Software Tools
    • Keil forum
  • bank switching to expand ROM in 89V51RD2

    Rajat Kumar
    Rajat Kumar

    I have to expand 64K ROM by interfacing 32k external ROM's. Let me know how to do the mapping and bank switching and the procedure.

    Thanks in Advance
    Rajat Kumar

    • over 6 years ago
    • Software Tools
    • Keil forum
  • clock output of rtc

    jeni a
    jeni a

    Hai......

    I need to enable the clock output of RTC pcf8563 interfacing with 89c52.
    clockoutput register for rtc is 0Dh.
    To get 32.768khz frequency, i have to load 10000000b (80h)into 0DH register.
    please help me to load this value using asm code.

    …
    • over 6 years ago
    • Software Tools
    • Keil forum
  • TTL TO RS 232

    sunny a
    sunny a

    HI, I am super confused why we need to use ttl to rs 232 conversion and rs232 to ttl conversion. please help...

    • over 5 years ago
    • Software Tools
    • Keil forum
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