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Recent content by sana_akhtar

  1. S

    USB-RS 232 and hyperterminal

    didnt worked ... it must be having some serious problem? some configuration error?Also I am using timer0 with external input. When timer0 get an input, UART stops receiving. Is there any link between this?
  2. S

    USB-RS 232 and hyperterminal

    it works sometimes and sometimes not. Also when it works, it stop suddenly at different times. :( - - - Updated - - - I think there is some timing synchronization problem. When i disconnect hyper terminal and connect it after sometimes, it shows receive data. But when then stop at random...
  3. S

    USB-RS 232 and hyperterminal

    didnt work :( - - - Updated - - - can this be because of time delay between controller and port ???? - - - Updated - - - it just gave output once. I have written the output in while loop so it should have displayed it continuously. but it isnt.
  4. S

    USB-RS 232 and hyperterminal

    here is all the code #include <htc.h> #include "uart.h" #include "Includes.h" #ifndef _XTAL_FREQ #define _XTAL_FREQ 4000000 #endif void main(void) { InitUART(); while(1) { SendStringSerially("hello world"); } } #ifndef __INCLUDES_H #define __INCLUDES_H //...
  5. S

    USB-RS 232 and hyperterminal

    thanks. It has opened but showing nothing :/ WHYYYY???? - - - Updated - - - here is the UART code I am using /* File: UART.c Purpose: To provide UART functionality for PIC uC */ #include "Includes.h" void InitUART(void) { TRISC6 = 1; // TX Pin TRISC7 = 1; // RX...
  6. S

    USB-RS 232 and hyperterminal

    I did this before.. still not working. Does hyper terminal support USB-RS 232 communication ? - - - Updated - - - I tried two other software, teraterm and putty. Both says that "unable to open port connection". So it means there is some connection problem. Where do I need to do settings, in...
  7. S

    USB-RS 232 and hyperterminal

    what is DB9?
  8. S

    USB-RS 232 and hyperterminal

    Hey On the last part of project ... sigh Using PIC16F877A, I used UART with PC and tried my code on proteus 8. Using virtual terminal on proteus its working fine. Now when I linked it with PC through USB-Rs 232, installed successfully prolific driver and usb has been detected, it isnt giving...
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    PIC16F877A UART character display

    Thanks poojarai, its coming on the proteus now. I am sending these commands to PC for a software. That software (designed specifically for this app) is displaying random numbers with great delays. For example, I want to send no. of outputs and output/hour. It isnt displaying anything...
  10. S

    PIC16F877A UART character display

    I did these changes. Still struggling with MAX232 :(
  11. S

    PIC16F877A UART character display

    There is no problem in code. I figured out it is actually some mistake in connect with MAX232. When I connected the virtual terminal with PIC directly it is displaying fine. Why MAX232 is not working? I am doing the same general connections as in this picture...
  12. S

    PIC16F877A UART character display

    Hey Please help me in figuring out the problem in this code. I am interfacing UART of PIC16F877A with PC, baud rate 9600, 4MHz fosc. In main.c, I am just sending a char array through a command function Uart_Write_text. Testing circuit on proteus 8.1, the virtual termainal do show something but...
  13. S

    [PIC] pic16f877a uart not working

    I am not starting a new thread. My question is also related to this. here is my UART code #ifndef _XTAL_FREQ #define _XTAL_FREQ 4000000 #endif char UART_Init(const long int baudrate) { unsigned int x; x = (_XTAL_FREQ - baudrate*64)/(baudrate*64); if(x>255) { x = (_XTAL_FREQ -...
  14. S

    [SOLVED] LCD command during ISR PIC16F877A problem

    Thank you so much Betwixt. It worked by second method. :)
  15. S

    [SOLVED] LCD command during ISR PIC16F877A problem

    I did some changes in your too. But now problem is, the value doesnt remain constant. I am checking the code on Proteus 8.1, so instead of sensor, I am just giving pulse at RA4. Therefore, time between two pulses must remain constant. What can be he possible problem? #include <htc.h> #include...

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