help with timer

Hello all,

I am a newbie and i am totally lost.Do help me.

I want to accurately find baud rate.

I have already programmed such that if i send character 'i' i get some value from my microcontroller.


But the problem is i dont know how to program this:


[b]In 10 sec, how many times I can transmit 'i' and receive data.[/b]

I thought all i have to do is set a timer that counts till ten and in the meanwhile transmit 'i' but i found that the timer does not seem to work parallely at all.


here is the code which dint work.


Code:
[code]
Public Class Form1
Dim i As Integer
Dim count As Integer
Dim txt As String


Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

Timer1.Enabled = True

End Sub

Private Sub calculate_transmit()
Do While i < 10
SerialPort1.WriteLine("i")
txt = SerialPort1.ReadChar
count = count + 1
Debug.Print(txt)
Loop

Debug.Print("total 'i' sent = ")
Debug.Print(count)

End Sub

Private Sub Form1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Click

calculate_transmit()

End Sub


Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick

i = i + 1

End Sub
[/code]

Comments

  • :
    Instead of timer you can try DateDiff() function
    [code]
    Private Sub Form1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Click

    Dim dteStart As Date = Now
    calculate_transmit(dteStart)

    End Sub

    Private Sub calculate_transmit(ByVal dteStart As Date)

    Dim i As Integer
    Dim count As Long
    Dim txt As String
    Dim dteEnd As Date
    Dim intDateDiff As Integer

    Do While intDateDiff <= 10
    Do While i < 10
    SerialPort1.WriteLine("i")
    txt = SerialPort1.ReadChar
    count = count + 1
    Debug.Print(txt)
    Loop
    dteEnd = Now
    intDateDiff = DateDiff(DateInterval.Second, dteStart, dteEnd)
    Loop

    Debug.Print("total 'i' sent = ")
    Debug.Print(count)

    End Sub
    [/code]

    I did not try this code but I think this idea will work
Sign In or Register to comment.

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Categories

In this Discussion