Need Some LUA help PLEASE

[JaSo PsP]

Ive created a simple program that enables USB and it works. USB gets activated when you press X. My only problem is, the text that says USB mode is active (screenrint(240,136,"US B mode is active",red)) It will only display when i am holding it down. How to i get it to stay there?

[Nutterbutter]

Set up a int, call it, usba.

Make a while loop in your program, that has the button input code. But if X is pressed set the usba to 1. Then set up an if loop that runs the screen printf if usba is 1.

This is it in C.

 int main(){

  SceCtrlData pad;
  int usba = 0;
 
 while(1){ 
  
        sceCtrlReadBufferPositive(&pad, 1);

      if (pad.Buttons & PSP_CTRL_CROSS){

       usba = 1 }
   
     if (usba == 1) {

     printf("USB mode is active");

     }

}
}

Im dont remember what the USB activation code is tho.

Sorry my lua isnt great, otherwise i would have written the lua code out.

[JaSo PsP]

Originally Posted by Nutterbutter

Set up a int, call it, usba.

Make a while loop in your program, that has the button input code. But if X is pressed set the usba to 1. Then set up an if loop that runs the screen printf if usba is 1.

Sorry my lua isnt great, otherwise i would have written the code out.

got it, i have to put the 'press x to enter usb mode' outside the 'while true do' part

[Access_Denied]

Try this:

if pad:cross() then
Dofunction()
end

Dofunction()
while true do
usb mode activate
screen print
screen.waitVblankStart()
screen.flip()
end
end

[Nutterbutter]

Try this.

usba = 1

while true do

      pad = Controls.read()
	        if pad:start() then
               
                    // USB activate code goes here
              
                 usba = 1
                 end

               if usba = 1 then 

                 (screenrint(240,136,"USB mode is active",red))

               end

end

Functions are pretty hard for somebody of his experience.

[Grimfate126]

Originally Posted by Access_Denied

Try this:

if pad:cross() then
Dofunction()
end

Dofunction()
while true do
usb mode activate
screen print
screen.waitVblankStart()
screen.flip()
end
end

ull still have the same problme tho.

try:

usbEnabled = false
oldpad = Controls.read()

while true do
screen:clear()
pad = Controls.read()

if pad:cross() and oldpad:cross() ~= pad:cross() and usbEnabled == false then
usbEnabled = true
else
usbEnabled = false
end

if usbEnabled == true then
--activate usb
-- print whatever
end

screen.waitVblankStart()
screen:flip()
oldpad = pad
end

[JaSo PsP]

no, i sort of got it but the screen was flickering from lowser to my program??

[JoeDaStudd]

The main loop should look like this, kinda

while true do
pad=Controls.read
screen:clear()
if pad:cross()then
usba="yes"
 
end
if usba=="yes" then
System.usbDiskModeActivate()
screen:print(240,136,"USB mode is active",red)
end
screen.waitVblankStart()
screen.flip()
end

[Nutterbutter]

Originally Posted by Nutterbutter

Try this.

usba = 1

while true do

      pad = Controls.read()
	        if pad:start() then
               
                    // USB activate code goes here
              
                 usba = 1
                 end

               if usba = 1 then 

                 (screenprint(240,136,"USB mode is active",red))

               end

end

Functions are pretty hard for somebody of his experience.

USE THIS!!!

[PSPduh]

Originally Posted by JaSo PsP

no, i sort of got it but the screen was flickering from lowser to my program??

You have too many screen.waitVblankStart's, or screen.flip's.

[JaSo PsP]

this is wot i got at the moment:

red = Color.new(255,0,0)
screen:print(240,136,"Press X to enter USB mode", red)

while true do
pad = Controls.read()
if pad:cross() then
screen:clear()
System.usbDiskModeActivate()
screen:print(240,136,"USB mode active", red)
end
if pad:start() then
return
end
screen.flip()
end

-= Double Post =-

Originally Posted by PSPduh

You have too many screen.waitVblankStart's, or screen.flip's.

i dont have a single screen:waitVblankStarts

[PSPduh]

Originally Posted by JaSo PsP

this is wot i got at the moment:

red = Color.new(255,0,0)
screen:print(240,136,"Press X to enter USB mode", red)

while true do
pad = Controls.read()
if pad:cross() then
screen:clear()
System.usbDiskModeActivate()
screen:print(240,136,"USB mode active", red)
end
if pad:start() then
return
end
screen.flip()
end

-= Double Post =-


i dont have a single screen:waitVblankStarts

You should. It should be at the VERY end of your code:

screen.waitVblankStart()
screen.flip()
end

Also, have you ever heard of this thread?

[JaSo PsP]

Originally Posted by PSPduh

You should. It should be at the VERY end of your code:

screen.waitVblankStart()
screen.flip()
end

Also, have you ever heard of this thread?

i know about screen.waitVblankStart() but ive almost got it, the USB mode active text stays there but when it says press X to activate USB mode it has lowser in the background...?
-= Double Post =-
ok, it still flashes like this...

screen:clear()
red = Color.new(255,0,0)
screen:print(240,136,"Press X to enter USB mode", red)

while true do
pad = Controls.read()
if pad:cross() then
screen:clear()
System.usbDiskModeActivate()
screen:print(240,136,"USB mode active", red)
end
if pad:start() then
return
end
screen.waitVblankStart() 
screen.flip()
end

[JoeDaStudd]

try

red = Color.new(255,0,0)
usba="no"

while true do
pad = Controls.read()
screen:clear()
if usba=="no" then
screen:print(240,136,"Press X to enter USB mode", red)
else
screen:print(240,136,"USB mode active", red)
end
if pad:cross() then
System.usbDiskModeActivate()
usba="yes"
end
if pad:start() then
break
end
screen.waitVblankStart()
screen.flip()
end

[Access_Denied]

Do this:

function Activate()
while true do
screen:clear()
pad = Contols.read()
screen: print(240,136,"USB mode active", red)
System.usbDiskModeActivate()
if pad:start() then
return
end
screen.waitVblankStart()
screen.flip()
end
end


red = Color.new(255,0,0)
while true do
screen:clear()
pad = Controls.read()

screen: print(240,136,"Pre ss X to enter USB mode", red)
if pad:cross() then
Activate()
end
screen.waitVblankStart()
screen.flip()
end

[JaSo PsP]

Originally Posted by JoeDaStudd

try

red = Color.new(255,0,0)
usba="no"

while true do
pad = Controls.read()
screen:clear()
if usba=="no" then
screen:print(240,136,"Press X to enter USB mode", red)
else
screen:print(240,136,"USB mode active", red)
end
if pad:cross() then
System.usbDiskModeActivate()
usba="yes"
end
if pad:start() then
break
end
screen.waitVblankStart()
screen.flip()
end

yer, u got it, ill see if it works...

[Bronx]

Originally Posted by Nutterbutter

USE THIS!!!

your syntax is al wrong , ur combining c and lua lol

[Nutterbutter]

Originally Posted by Bronx

your syntax is al wrong , ur combining c and lua lol

[SG57]

No need for a completely seperate thread for something as simple as a bool to tell whether or not the usb is active or not...

usb = false
white = Color.new(255,255,255)

while true do
     pad = Controls.read()
     
     if usb==true then screen:print(0,0,"SG57: USB On", white)
     else screen:print(0,0,"SG57: Usb Off",white) end

     if pad:cross() then usb = ~usb end
end

Im positive someone has explained booleans to you if you read all those tutorials right?

[yaustar]

I would change it this so that it can tell the difference from a singular key press and release:

usb = false
WasCrossPressed = false;
white = Color.new(255,255,255)

while true do
     pad = Controls.read()
     
     if usb==true then screen:print(0,0,"SG57: USB On", white)
     else screen:print(0,0,"SG57: Usb Off",white) end

     if pad:cross() then 
          if not WasCrossPressed then
               usb = ~usb
          end
          WasCrossPressed = true
     else
          WasCrossPressed = false
     end
end