Author Topic: Serial or Parallel port interfacing (using usb to parallel or serial converter) (Read 721 times)

janmike · « **on:** March 11, 2011, 11:36:25 PM »

Tanong ko lang po kung gagamit ba ako ng usb to serial port or usb to parallel port converter, same parin ang interfacing na parang pinalitan mo lang yung usb ng parallel or serial port? Ang project po kasi namin eh MCU to PC interface and serial or parallel port ang gagamitin namin pero wala nang available na serial and parallel ports sa mga pc and laptop namin.

thanks sa mga sasagot

Philippine Electronics Forum · « **on:** March 11, 2011, 11:36:25 PM »

Mayalin22 · « **Reply #1 on:** March 11, 2011, 11:42:10 PM »

same pa rin as if you are using an original serial port or parallel port

Philippine Electronics Forum · « **Reply #1 on:** March 11, 2011, 11:42:10 PM »

Kaizer03 · « **Reply #2 on:** March 11, 2011, 11:52:55 PM »

just dont forget the logic level translator

Philippine Electronics Forum · « **Reply #2 on:** March 11, 2011, 11:52:55 PM »

dummy_c · « **Reply #3 on:** March 12, 2011, 06:58:39 AM »

Subscribing... Gamit din ako nito. Sir TS maki post dito hah...

Quote from: ┌[٠KaiZeR]٨[gigz09٠]┐ on March 11, 2011, 11:52:55 PM

just dont forget the logic level translator

Gamit ba dito max232 sir? or any equivalent IC.. Kasi ang gamit ko po, using discreet components lang. Hito po part ng codes ko sa PIC using mikroc hoh:

Code: [Select]

while (1) {
      if (UART1_Data_Ready()) {     // If data is received,
      uart_rd = UART1_Read();     // read the received data,
      if (uart_rd == 0x31)                 // char "1"
       PORTD.B0 = 1;
       Delay_ms(1100);
       PORTD.B0 = 0;
      if (uart_rd == 0x32)                 //char "2"
       PORTD.B0 = 1;
       Delay_ms(400);
       PORTD.B0 = 0;
      if (uart_rd == 0x33)                 //char "3"
       PORTD.B1 = 1;
       Delay_ms(1100);
       PORTD.B1 = 0;
      if (uart_rd == 0x34)                //char "4"
       PORTD.B1 = 1;
       Delay_ms(400);
       PORTD.B1 = 0;
      }

Nag work naman ito. Pero meron konting medyo matagal na delay sa pag output pag char 2-3 ang na receive. Walang delay pag char 1. And another thing tina-try ko naman "portd=uart_rd, napansin ko nag blink yung LED's(depends on the char sent) connected to it then may delay for almost about 1sec then nag blink na naman.
By d way USB to serial gamit ko yung sa CDR king 120 petot. Maraming salamat po.

Philippine Electronics Forum · « **Reply #3 on:** March 12, 2011, 06:58:39 AM »

your most RIDICULOUS man :) · « **Reply #4 on:** March 12, 2011, 01:10:01 PM »

share your schematics and how much NmaN MAGAGASTOS?

ung sakin 18f2550 gamit...

Philippine Electronics Forum · « **Reply #4 on:** March 12, 2011, 01:10:01 PM »

rdpzycho · « **Reply #5 on:** March 12, 2011, 01:44:18 PM »

'yung USB to Parallel Port medyo mahirap maghanap nung direct na kapalit talaga. karamihan ng mabibili sa mga local Computer Shops ay USB to Parallel Port Printer talaga.

dummy_c · « **Reply #6 on:** March 13, 2011, 07:48:23 PM »

http://www.uchobby.com/index.php/2007/06/11/ttl-to-rs232-adaptor-explained/

Yan po gamit ko level converter kasi walang available na RS232 dito sa amin. PIC16f887 po gamit ko. Na try ko rin pic16f628a.

Mayalin22 · « **Reply #7 on:** March 13, 2011, 09:40:39 PM »

^ pwede yan sis

Arvie · « **Reply #8 on:** May 10, 2011, 09:00:43 PM »

USB-to-Serial eh walang problema.

pero kapag USB-to-Parallel Port.. di pede.
kasi marerecognize yun as Comm Port instead of LPT Port..
LPT Port dapat para magamit ng Programming Language mo yung data and control.

Philippine Electronics Forum · « **Reply #8 on:** May 10, 2011, 09:00:43 PM »

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