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Recent content by cheenu02

  1. C

    sdcard as mass storage device

    hi, I am doing GPS data logger.My microcontroller is ARM CORTEX M0(LPC11U24). I am able to read and write data in sdcard using LPC11U24. But I am not able to make sd card as mass storage device(If i connect board to PC It should the contents of SD card,like pen drive). I need a example code for...
  2. C

    Need mcf5272 interrupt configuration

    hi, I am using external interrupt(INT5) of MCF5272.I am using codewarrior software.I need to know how to configure external interrupt on MCF5272.
  3. C

    Running code warrior through command line

    hi, I am trying to run the code warrior through command prompt. My TCL commands are in following order debug go wait 5000 stop kill quitIDE No command is executing after go command. I need to close the debugger and IDE after run. Please help me.. Thank you.
  4. C

    read data from eeprom through pca9564

    hi, I want to read data from EEPROM(M24C02) through I2C controller(PCA9564).What is the procedure to do this one. thank you.
  5. C

    sim900a restarting frequently

    hi, I am using using SIM900a to send sms in my project.It was worked fine till yesterday.The problem is it is restarting continuously from today morning onwards.The output is like this RDY +CFUN: 1 +CPIN: READY Call Ready RDY +CFUN: 1 +CPIN: READY Call Ready RDY +CFUN: 1 +CPIN...
  6. C

    bootloader on P89v51RD2 erased

    hi, Unfortunately bootloader of my P89V51RD2 got erased while doing program using IAP. How to reload the bootloader in that IC? Help me.. Thank you.
  7. C

    p89v51rd2 not flashing

    hi, My p89v51rd2 is not flashing but when I reset the IC it is executing the previously burned program. I am using flash magic software.
  8. C

    how to write data to code memory 8051

    while linking it is showing the following errors.Do I need to change any settings in KEIL compiler? Build target 'Target 1' linking... *** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS SEGMENT: ?CO?A Program Size: data=9.0 xdata=0 code=19 "a" - 0 Error(s), 1 Warning(s).
  9. C

    how to write data to code memory 8051

    Hi, I tried with that one But It is showing warning. Below is my example program and warning displayed. #include<p89v51rx2.h> void main() { unsigned int code a=10; while(1); } MEM_TEST.C(6): warning C280: 'a': unreferenced local variable I want to assign the particular memory address in code...
  10. C

    how to write data to code memory 8051

    hi, I am trying to save my datas in the code memory of P89v51RD2 controller.I am using KEIL s/w.how to do it? Help me.. thank you, srinivasan
  11. C

    gsm module(sim900a) not working

    hi, I am working with the gsm module(simcom sim900a). I am trying to connect with this to PC through serial port. I want to know hoe to connect that gsm module to PC through serial port and how to test that one.
  12. C

    what is media exit shutter?

    what is media exit shutter in atm machine and how it is working
  13. C

    What is a TTL shutter in cameras?

    I want to know what is meant by TTL shutter(used in cameras).How it is working.
  14. C

    4bit lcd not working with pic18f452

    hi, I am practicing sending the data to LCD using four pins.I am not able to get the output.Please help me. This is my code #include<18f452.h> #fuses HS,NOWDT,NOLVP,NOPROTECT #use delay(clock=4000000) #define rs PIN_C0 #define rw PIN_C1 #define en PIN_C2 //data pins D0,D1,D2,D3 void...
  15. C

    ultrasonic range finder problem

    hi, This is my program.I am using PICC(CCSC) compiler #include<18f452.h> #fuses HS,NOWDT,NOLVP,NOPROTECT #use delay(clock=12000000) #use rs232(baud=9600,xmit=PIN_C6,rcv=PIN_C7) #define rs PIN_C0 #define rw PIN_C1 #define en PIN_C2 void signal() { output_low(PIN_B0); delay_us(2)...
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