Post by thread:[SX] RESET Problem

In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Calebo wrote:

Nevermind I retyped all of the programs and for some reason they all work fine now. :shocked: Must be a noob mistake or something. I am now trying to figure out how to turn pins into input; basically just connect them the ground. My programs aren't turning the appropriate pins to gnd so i am all confused. Attached is one of my first programs where I am trying to find out how to connect the pins to ground. My assembly language "vocabulary" isn't quite expanded so any help is appreciated. ;-) Calebjo ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=308356#m308588 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2008 (http://www.dotNetBB.com)

In SX Microcontrollers, SX/B Compiler and SX-Key Tool, PJMonty wrote:Calebjo, Turning a pin to input and connecting a pin to ground are not the same thing. When a pin is an output, you can set it high or low. When high, it sources the power supply voltage, when low it is connected to ground. If you turn a pin into an input, it goes into Hi-Z mode which means it is floating and not connected to anything.

Thanks, PeterM ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=308356#m308642 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2008 (http://www.dotNetBB.com)

In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Calebo wrote:

PeterM, Thank you for clarifying that for me. How would you instruct the SX to set that output pin to high or low? What would the progam code be for that? Thanks for your consideration, Calebjo ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=308356#m308645 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2008 (http://www.dotNetBB.com)

In SX Microcontrollers, SX/B Compiler and SX-Key Tool, PJMonty wrote:Calebjo, Here is a sample program that sets various pins of Port A as outputs and lets you set them high or low. Thanks, PeterM ifdef __SASM DEVICE SX28, turbo, stackx, optionx, OSCHS3 ; Un-comment for SX28 chip ;DEVICE SX48, OSCHS3 ; Un-comment for SX48 chip else DEVICE SX28L,turbo,stackx_optionx endif FREQ 50_000_000 RESET InitSx ;Set reset/boot address ifdef __SASM LIST Q=37;, Q=64 ; This quiets specfic SASM warnings irc_cal IRC_FAST endif ; Control register equates DIR equ $0f InitSx org $0 ; Get SX ready for setting port pin direction mode DIR ; set input/output states ; These are samples of setting different pin(s) as outputs mov !ra, #%11111110 ;Set PortA pin 0 as output mov !ra, #%11111101 ;Set PortA pin 1 as output mov !ra, #%11110110 ;Set PortA pins 3 and 0 as output jmp @Main ; Everything above this line only needs to be done once in program ; Now you can set port pins high or low org $200 Main mov ra, #%11111111 ; Port A, all pins high mov ra, #%11111110 ; Port A, pin 0 low mov ra, #%11110110 ; Port A, pins 0 and 3 low jmp Main ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=308356#m309280 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2008 (http://www.dotNetBB.com)

In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Calebo wrote:

PeterM, Thanks for the sample program and clearing the high and low up for me! Now i can actually connect things to ground instead of turning them to Hi-z state. Thanks again! Calebjo ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=308356#m309575 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2008 (http://www.dotNetBB.com)