Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Recent content by girish09

  1. G

    Trying to understand working of char pointer

    int int_val = 0x12345678; char *ptr; ptr = (char*)(&int_val); arr[0] = *ptr; printf("%x", arr[0]); ptr++; arr[1] = *ptr; printf("%x", arr[1]); ptr++; arr[2] = *ptr; printf("%x", arr[2]); ptr++; arr[3] = *ptr; printf("%x"...
  2. G

    Trying to understand working of char pointer

    Hello all, I am trying to understand char pointer. In my program I am having 4 bytes number (12345678) and using char* I am trying to separate, save in char array and print each byte, but I am successful in only first byte (i.e. 78) but as soon as I am trying to print next byte by...
  3. G

    [General] Need a logic to interface no of inputs to microcontroller

    Dear d123 and genex, Thanks for your reply using mux how many inputs i can process ? how many mux i need? I never used mux so I am not aware about max no of inputs MUX IC available. And Can you suggest any i/o expander for this ?
  4. G

    8051 Atmel 89C51 programming in C example HELP

    Exactly what problem you are facing ? Kindly elaborate.
  5. G

    Programming of LPC 2148 microcontroller

    Dear Prakash, First you go through a sample code for GPIO programming of ARM7, once you finish this then you go through the UART section of LPC21xx User manual and carefully read all the UART related registers and for programming I will help you out. If any doubt you can ask for help.
  6. G

    [moved] problem with gsm based project

    Dear Balvendra, How are you sending data using sim 900 ? As per my knowledge Each message received by SIM900 module is start with “+CMT” and after that it has the mobile number of the sender and at the end lies the body of the message.
  7. G

    [General] Need a logic to interface no of inputs to microcontroller

    Hi, I have developed my project using 89s52, in which I am accepting input on the no of GPIO's available on micro controller and and in uC I just checked which input (Sensor) is activated so I just send message on the UART. e.g. if Sensor number 3 is activated then corresponding GPIO pin...
  8. G

    ARM LPC 2294 LCD and Keypad interfacing using interrupt method

    I am using ARM LPC 2294, i have interfaced LCD and keypad for keypad interfacing i have used interrupt method (because my schematic is like that so i have to write code like that only).......whenever i power on the circuit welcome message is displaying on LCD properly but when press the key of...
  9. G

    Arm lpc2294 basic problems related to interrupt calling

    I am using ARM LPC 2294, i have interfaced LCD and keypad for keypad interfacing i have used interrupt method (because my schematic is like that so i have to write code like that only)....my LCD is working properly but my program is not going into interrupt function, as i have checked this...
  10. G

    Arm lpc2294 basic problems related to few Registers like DISPDATA_MASK

    Hello friends, I am complete beginner in ARM controller, actually i am working on LPC 2294, can anyone tell me what is that DISPDATA_MASK, ENABLE_MASK, REGSEL_MASK, actually this is lcd code working properly, i know function of Enable, Register select in 8051 and PIC programming but i am not...
  11. G

    89v51rd2 controller to drive DC motor

    Hi, I am using 89v51rd2 controller to drive a DC motor. I want to generate PWM to control the motor. i want to rotate the motor in clockwise direction for 30 second & then counterclockwise direction for 30 seconds.....i dont want to use inbuilt functionality to produce PWM ....also i have...
  12. G

    ARM Cortex M3 LPC1754, with a GPRS based problem

    HI, I am using a ARM Cortex M3 LPC1754, with a GPRS based sim card. I m going to send the firmware to this device over GPRS. And store in its External 2MB flash from specific address location. After complete downloading I want t switch ch the boot location to this newly added...
  13. G

    problem related with MPLAB compilation

    I am trying to compile the code for PIC16F877A for Timer0. Previously the same code was built successfully(with MPLAB v8.10) but now it is showing on error with MPLAB v8.56 as well as on MPLAB v 8.88 Error [192] F:\practice\T0_timer.c; 7.1 undefined identifier "OPTION_REG' and shows build...
  14. G

    phase locked loop- should i use divide by N counter

    I read PLL in Ramakant gayakwad reference book where they explained that VCO o/p frequency is N times the input frequency, so my query is we r trying to reduce VCO frequency towords value of Reference frequency so if VCo is producing N times higher frequency then they will never become same, as...
  15. G

    OP-Amp amplifier circuit

    Thanks.......Exactly.....you got my point.....But i didn't get ur answer. I know gain of inv amp is -Rf/R1 , But if ckt is going to complete through the path vin-R1-Rf-Rload-Gnd then when op-amp is coming in picture. Because if we will use transistor instead of opamp then current will flow thr...
See more

Part and Inventory Search

Back
Top