I am not sure Why *shm give me nothing ?
printf("Shmget() successful %d\n",shmid);
if((shm = shmat(shmid, NULL,0)) == (char*)-1){
perror("shmat");
}
printf("vlue of shm is: %c", *shm);
Related
So, I've been working on this for the past week. I have tried everything (based on the knowledge I know) and yet nothing... my code didn't work the first time, the second time, the third time... the forth... etc... at the end, I let frustration take control of me and I ended up deleting the whole script. Luckily not the parts and models, otherwise I'm really screwed...
I need to create a game in which I have to create a keypad of sorts, at first I thought GUI would work... no, it needs to be SurfaceGUI, which I don't know how to handle well... Anyway, I needed to create a keypad using SurfaceGUI, and display it on a separate screen, as a typical keypad would...
The Player would first have to enter an "initial" number, meaning in order to enter the randomly generated number he first needed to input the static pin in order to "log in," after that, then he would try to guess the number...
I've literally tried everything I could but nothing... It's mainly because of my lack of experience in LUA, I'm more advanced in Python and barely know a thing in Java... If someone could assist me on how to do this, I would appreciate it greatly
First, download this and put it in a ScreenGui in StarterGui. Then, use the following LocalScript placed inside the PIN frame:
-- Script settings
local len = 4 -- replace this as needed...
local regen = false -- determines whether PIN will regenerate after a failed attempt
local regmes = "Enter PIN..." -- start message of PIN pad
local badmes = "Wrong PIN!" -- message displayed when PIN is wrong
local success = "Correct PIN!" -- message displayed when PIN is right
-- Script workings
local pin = script.Parent
local top = pin.Top
local txt = top.Numbers
local nums = top.NumKeys
local pin
local stpin
local nms
txt.Text = regmes
local see = game:GetStorage("ReplicatedStorage").PINActivate
local function activate()
if pin.Visible then
pin.Visible = false
for _, btn in pairs(nums:GetChildren()) do
btn.Active = false
end
return
else
pin.Visible = true
for _, btn in pairs(nums:GetChildren()) do
btn.Active = true
end
return
end
end
local function rand()
math.randomseed(os.time) -- better random numbers this way
return tostring(math.floor(math.random(0,9.9)))
end
local function gen()
nms = {rand()}
for i=2, len, 1 do
nms[#nms+1]=rand()
end
stpin = nms[1]
for i=2, #nms, 1 do
stpin = stpin..nms[i]
end
pin = tonumber(stpin) -- converts the number string into an actual number
end
gen()
local function activate(str)
if tonumber(str) ~= pin then
txt.Text = badmes
wait(2)
txt.Text = regmes
if regen then
gen()
wait(0.1)
end
return
else
txt.Text = success
wait(2)
activate()
-- insert code here...
end
end
for _, btn in pairs(nums:GetChildren()) do
btn.Activated:Connect(function()
if txt.Text == "Wrong PIN!" then return end
txt.Text = txt.Text..btn.Text
if string.len(txt.Text) >= len then
activate(txt.Text)
end
wait(0.1)
end)
end
see.OnClientEvent:Connect(activate)
And in a Script put this:
local Players = game:GetService("Players")
local see = game:GetService("ReplicatedStorage").PINActivate
local plr
-- replace Event with something like Part.Touched
Event:Connect(function(part)
if part.Parent.Head then
plr = Players:GetPlayerFromCharacter(part.Parent)
see:FireClient(plr)
end
end)
What this will do is bring up a ScreenGui for only that player so they can enter the PIN, and they can close it as well. You can modify as needed; have a great day! :D
There is an easier way, try this
First, Create a GUI in StarterGui, then, Create a textbox and postion it, after that, create a local script inside and type this.
local Password = math.random(1000, 9999)
print(Password)
game.ReplicatedStorage.Password.Value = Password
script.Parent.FocusLost:Connect(function(enter)
if enter then
if script.Parent.Text == tostring(Password) then
print("Correct!")
script.Parent.BorderColor3 = Color3.new(0, 255, 0)
Password = math.random(1000, 9999)
game.ReplicatedStorage.Correct1:FireServer()
print(Password)
game.ReplicatedStorage.Password.Value = Password
else
print("wrong!")
print(script.Parent.Text)
script.Parent.BorderColor3 = Color3.new(255, 0, 0)
end
end
end)
That's all in the textbox.
Or if you want a random username script, create a textlabel, then, create a local script in the textlabel and type in this.
local UserText = script.Parent
local Username = math.random(1,10)
while true do
if Username == 1 then
UserText.Text = "John"
elseif Username == 2 then
UserText.Text = "Thomas"
elseif Username == 3 then
UserText.Text = "Raymond"
elseif Username == 4 then
UserText.Text = "Ray"
elseif Username == 5 then
UserText.Text = "Tom"
elseif Username == 6 then
UserText.Text = "Kai"
elseif Username == 7 then
UserText.Text = "Lloyd"
elseif Username == 8 then
UserText.Text = "Jay"
elseif Username == 9 then
UserText.Text = "User"
else
UserText.Text = "Guest"
end
wait()
end
All of those if statments are checking what username has been chosen. I have made a roblox game like this recently, so I just took all the script from the game.
If you want to check out my game, Click Here
I am currently working on a project that requires serial communication between PIC 24FV16KA302 and a PC software.
I have searched the Internet for the past 3 days and i cant find an answer for my problem so i decided to ask here . This is my first visual studio program so i dont have any experience with the software.
The PIC has few variables and two 8x16 tables that i need to view and modify on the PC side . The problem comes when i send the tables , all other information is received without a problem . I am using serial connection ( 38400/8-N-1 ) via uart to usb converter
FT232
When the PC send "AT+RTPM" to the PIC .
Button7.Click
SerialPort1.ReceivedBytesThreshold = 128
MachineState = MS.Receive_table
SerialPort1.Write("AT+RTPM")
End Sub
The PIC sends back 128 Bytes( the values in the table )
case read_table_pwm : // send pwm table
for (yy = 0 ; yy < 8 ; yy ++) {
for (xx = 0 ; xx < 16 ; xx++ ) {
uart_send_char(controll_by_pmw_map_lb[yy][xx]) ;
}
}
at_command = receive_state_idle ;
break ;
Which the software is suppose to get and display in a DataGrid.
Private Sub SerialPort1_DataReceived(sender As Object, e As IO.Ports.SerialDataReceivedEventArgs) Handles SerialPort1.DataReceived
If MachineState = MS.Receive_table Then
SerialPort1.Read(Buffer_array_received_data, 0, 128)
cellpos = 0
For grid_y As Int16 = 0 To 7 Step 1
For grid_x As Int16 = 0 To 15 Step 1
DataGridView1.Rows(grid_y).Cells(grid_x).Value = Buffer_array_received_data(cellpos)
cellpos += 1
Next
Next
End Sub
The problem is that most of the time ( 99 % ) it displays only part of the dataset and zeros to the end , and when i try to do it again it display the other part and it starts from the beginning .
First request
Second request
If i try the same thing with another program i always get the full dataset
Realterm
Termite
I have tried doing it cell by cell , but it only works if i request them one very second , other wise i get the same problem .
After that i need to use a timer ( 100 ms ) to request live data from the PIC .
this work better but still some of the time i get some random data. I haven't focused on that for the moment because without the dataset everything else is useless .
Am i missing something or has anyone encountered the same problem ?
I managed to solve the problem by replacing
SerialPort1.Read(Buffer_array_received_data, 0, 128)
with
For byte_pos As Int16 = 0 To 127 Step 1
Buffer_array_received_data(byte_pos) = SerialPort1.ReadByte()
Next
But aren't they supposed to be the same ?
so I am very new to coding in general and I am trying to make a vertically-scrolling endless runner which basically involves jumping onto platforms to stay alive.I want to generate the same platform in three different locations endlessly. I basically copied some code from an article on the internet and then changed it around to try to make it suit my needs. However, when I run my code in the simulator, one platform is generated in the same location and no others appear. Also, when I look at the console, random numbers do appear. here is the code I am using
local blocks = display.newGroup ()
local groundMin = 200
local groundMax = 100
local groundLevel = groundMin
local function blockgenerate( event )
for a = 1, 1, -1 do
isDone = false
numGen = math.random(3)
local newBlock
print (numGen)
if (numGen == 1 and isDone == false) then
newBlock = display.newImage ("platform.jpg")
end
if (numGen == 2 and isDone == false) then
newBlock = display.newImage ("platform.jpg")
end
if (numGen == 3 and isDone == false) then
newBlock = display.newImage ("platform.jpg")
end
newBlock.name = ("block" .. a)
newBlock.id = a
newBlock.x = (a * 100) - 100
newBlock.y = groundLevel
blocks : insert(newBlock)
end
end
timer.performWithDelay (1000, blockgenerate, -1)
thank you very much in advance and sorry my description was so long
Your "a" variable is always going to be 1. Perhaps you meant to use:
a = a + 1
Joomla 2.5 by default limits the number of how many votes a user can do. This is limited by IP address.
Is there any simple way to allow multiple votes per IP Address?
I am using the CORE Voting.
Actually, Joomla! 2.5 only stores the last voter's IP address per item.
If another vote comes from a different IP address, the user with the original IP address can vote again.
This behavior is defined in /components/com_content/models/article.php, circa line 308.
if ($userIP != ($rating->lastip))
{
$db->setQuery(
'UPDATE #__content_rating' .
' SET rating_count = rating_count + 1, rating_sum = rating_sum + '.(int) $rate.', lastip = '.$db->Quote($userIP) .
' WHERE content_id = '.(int) $pk
);
if (!$db->query()) {
$this->setError($db->getErrorMsg());
return false;
}
} else {
return false;
}
Changing it involves core file hacking.
One thing that you can do make the test in the if clause always return true, so one possibility is to comment first line and replace it with
if (true)//$userIP != ($rating->lastip))
{
$db->setQuery(
'UPDATE #__content_rating' .
' SET rating_count = rating_count + 1, rating_sum = rating_sum + '.(int) $rate.', lastip = '.$db->Quote($userIP) .
' WHERE content_id = '.(int) $pk
);
if (!$db->query()) {
$this->setError($db->getErrorMsg());
return false;
}
} else {
return false;
}
I don't find the original core solution that great, and it is not customizable, either.
I'm studing Aparapi (https://code.google.com/p/aparapi/) and have a strange behaviour of one of the sample included.
The sample is the first, "add". Building and executing it, is ok. I also put the following code for testing if the GPU is really used
if(!kernel.getExecutionMode().equals(Kernel.EXECUTION_MODE.GPU)){
System.out.println("Kernel did not execute on the GPU!");
}
and it works fine.
But, if I try to change the size of the array from 512 to a number greater than 999 (for example 1000), I have the following output:
!!!!!!! clEnqueueNDRangeKernel() failed invalid work group size
after clEnqueueNDRangeKernel, globalSize[0] = 1000, localSize[0] = 128
Apr 18, 2013 1:31:01 PM com.amd.aparapi.KernelRunner executeOpenCL
WARNING: ### CL exec seems to have failed. Trying to revert to Java ###
JTP
Kernel did not execute on the GPU!
Here's my code:
final int size = 1000;
final float[] a = new float[size];
final float[] b = new float[size];
for (int i = 0; i < size; i++) {
a[i] = (float)(Math.random()*100);
b[i] = (float)(Math.random()*100);
}
final float[] sum = new float[size];
Kernel kernel = new Kernel(){
#Override public void run() {
int gid = getGlobalId();
sum[gid] = a[gid] + b[gid];
}
};
Range range = Range.create(size);
kernel.execute(range);
System.out.println(kernel.getExecutionMode());
if (!kernel.getExecutionMode().equals(Kernel.EXECUTION_MODE.GPU)){
System.out.println("Kernel did not execute on the GPU!");
}
kernel.dispose();
}
I tried specifying the size using
Range range = Range.create(size, 128);
as suggested in a Google group, but nothing changed.
I'm currently running on Mac OS X 10.8 with Java 1.6.0_43. Aparapi version is the latest (2012-01-23).
Am I missing something? Any ideas?
Thanks in advance
Aparapi inherits a 'Grid Style' of implementation from OpenCL. When you specify a range of execution (say 1024), OpenCL will break this 'range' into groups of equal size. Possibly 4 groups of 256, or 8 groups of 128.
The group size must be a factor of range (so assert(range%groupSize==0)).
By default Aparapi internally selects the group size.
But you are choosing to fully specify the range and group size to using
Range r= Range.range(n,128)
You are responsible for ensuring that n%128==0.
From the error, it looks like you chose Range.range(1000,128).
Sadly 1000 % 128 != 0 so this range will fail.
If you specifiy
Range r = Range.range(n)
Aparapi will choose a valid group size, by finding the highest common factor of n.
Try dropping the 128 as the the second arg.
Gary