ISCHARWAITING/de - Revision history

Stefanhamburg: /* Example */

2013-02-21T21:56:57Z

Example

Stefanhamburg: /* See also */

2013-02-21T21:55:23Z

Stefanhamburg: /* Remarks */

2013-02-21T21:54:58Z

Remarks

Stefanhamburg: /* (COPIED FROM ENGLISH PAGE) = */

2013-02-21T21:45:13Z

(**COPIED FROM ENGLISH PAGE**) =

Admin: 1 revision

2013-02-15T19:15:03Z

1 revision

Admin: Created page with "= Action = Returns one(1) when a character is waiting in the hardware UART buffer.
2013-02-11T19:36:42Z

Created page with "= Action = Returns one(1) when a character is waiting in the hardware UART buffer. Action =

Returns one(1) when a character is waiting in the hardware UART buffer.

 

 

= Syntax =

var = ISCHARWAITING()

var = ISCHARWAITING(#channel)

 

 

= Remarks =
<div style="padding: 0px; margin: 0px 0px 0px 4px;">
{| width="488" cellspacing="0" cellpadding="1" border="1" style="border: 2px solid rgb(0, 0, 0); border-spacing: 0px; border-collapse: collapse;"
|- style="vertical-align: top;"
| valign="top" width="15%" style="width: 69px; border: 1px solid rgb(0, 0, 0);" |
Var

| valign="top" width="100%" style="width: 410px; border: 1px solid rgb(0, 0, 0);" |
Byte, Integer, Word or Long variable.

|- style="vertical-align: top;"
| valign="top" width="15%" style="width: 69px; border: 1px solid rgb(0, 0, 0);" |
Channel

| valign="top" width="100%" style="width: 410px; border: 1px solid rgb(0, 0, 0);" |
A constant number that identifies the opened channel.

|}
</div>
 

If there is no character waiting, a zero will be returned.

If there is a character waiting, a one (1) will be returned.

The character is not retrieved or altered by the function.

 

While the Inkey() will get the character from the HW UART when there is a character in the buffer, it will return a zero when the character is zero. This makes it unusable to work with binary data that might contain the value 0.

 

With IsCharWaiting() you can first check for the presence of a character and when the function returns 1, you can retrieve the character with Inkey or Waitkey.

 

IsCharWaiting can NOT be used with a software uart (SW-UART). This because a SW-UART does not buffer the data is receives or sends.

 

 

= See also =

[[WAITKEY]] , [[INKEY]]

 

 

= Example =

 <source lang="bascomavr">
$regfile = "m48def.dat" ' specify the used micro
$crystal = 4000000 ' used crystal frequency
$baud = 19200 ' use baud rate
$hwstack = 32 ' default use 32 for the hardware stack
$swstack = 10 ' default use 10 for the SW stack
$framesize = 40 ' default use 40 for the frame space

Dim A As Byte , S As String * 2
Do
A = Ischarwaiting()
If A = 1 Then 'we got something
A = Waitkey() 'get it
Print "ASCII code " ; A ; " from serial"
End If
Loop Until A = 27 'until ESC is pressed
</source> {{Languages}}

[[Category:BASCOM Language Reference/de]]

@@ Line 68: / Line 68: @@
 <span style="font-family: Arial;">&nbsp;</span>
-= <span class="f_Header">Example</span> =
+= <span class="f_Header">Beispiel</span> =
 <br/><source lang="bascomavr">
 $regfile = "m48def.dat" ' specify the used micro
-$crystal = 4000000 ' used crystal frequency
+$crystal = 4000000 ' Taktrate
-$baud = 19200 ' use baud rate
+$baud = 19200 ' Baudrate
 $hwstack = 32 ' default use 32 for the hardware stack
 $swstack = 10 ' default use 10 for the SW stack
@@ Line 81: / Line 81: @@
 Do
   A = Ischarwaiting()
-If A = 1 Then 'we got something
+If A = 1 Then 'es wurde etwas empfangen
-  A = Waitkey() 'get it
+  A = Waitkey() 'empfangen
   Print "ASCII code " ; A ; " from serial"
 End If
-Loop Until A = 27 'until ESC is pressed
+Loop Until A = 27 'bis ESC gedrückt wird
 </source><br/>{{Languages}}
 [[Category:BASCOM Language Reference/de]]

@@ Line 60: / Line 60: @@
 <span style="font-family: Arial;">&nbsp;</span>
-= <span class="f_Header">See also</span> =
+= <span class="f_Header">Siehe auch</span> =
 [[WAITKEY]]&nbsp;,&nbsp;[[INKEY]]

@@ Line 17: / Line 17: @@
 <span style="font-family: Arial;">&nbsp;</span>
-= <span class="f_Header">Remarks</span> =
+= <span class="f_Header">Anmerkungen</span> =
 <div style="padding: 0px; margin: 0px 0px 0px 4px;">
 {| width="488" cellspacing="0" cellpadding="1" border="1" style="border: 2px solid rgb(0, 0, 0); border-spacing: 0px; border-collapse: collapse;"
@@ Line 25: / Line 25: @@
 | valign="top" width="100%" style="width: 410px; border: 1px solid rgb(0, 0, 0);" |
-Byte, Integer, Word or Long variable.
+Byte-, Integer-, Word- oder Long-Variable.
 |- style="vertical-align: top;"
@@ Line 32: / Line 32: @@
 | valign="top" width="100%" style="width: 410px; border: 1px solid rgb(0, 0, 0);" |
-A constant number that identifies the opened channel.
+Konstante Nummer des geöffneten Kanals.
 |}
@@ Line 38: / Line 38: @@
 <span style="font-family: Arial;">&nbsp;</span>
-If there is no character waiting, a zero will be returned.
+Wenn kein Zeichen ansteht dann wird eine Null (0) zurückgegeben.
-If there is a character waiting, a one (1) will be returned.
+Wenn ein Zeichen ansteht dann wird eine Eins (1) zurückgegeben.
-The character is not retrieved or altered by the function.
+Das Zeichen wird durch die Funktion nicht empfangen oder geändert.
 <span style="font-family: Arial;">&nbsp;</span>
-While the Inkey() will get the character from the HW UART when there is a character in the buffer, it will return a zero when the character is zero. This makes it unusable to work with binary data that might contain the value 0.
+Inkey() empfängt ein Zeichen aus der HW-UART wenn ein Zeichen im Buffer ist. Wenn kein Zeichen ansteht dann gibt Inkey() eine Null zurück. Dadurch ist Inkey() nutzlos wenn ninäre Daten empfangen werden, die auch Nullen enthalten können.
 <span style="font-family: Arial;">&nbsp;</span>
-With IsCharWaiting() you can first check for the presence of a character and when the function returns 1, you can retrieve the character with Inkey or Waitkey.
+Mit IsCharWaiting() kann man vorher prüfen ob ein Zeichen ansteht und wenn die Funktion eine Eins zurückgibt dann kann man das Zeichen mit Inkey oder Waitkey empfangen.
 &nbsp;
-IsCharWaiting can NOT be used with a software uart (SW-UART). This because a SW-UART does not buffer the data is receives or sends.
+IsCharWaiting kann nicht mit der Software UART (SW-UART) benutzt werden weil die SW-Uart die empfangenen und gesendeten Zeichen nicht puffert.
 &nbsp;

@@ Line 1: / Line 1: @@
-== (**COPIED FROM ENGLISH PAGE**) === <span class="f_Header">Action</span> =
+= <span class="f_Header">Funktion</span> =
-Returns one(1) when a character is waiting in the hardware UART buffer.
+Gibt eine Eins (1) zurück wenn ein Zeichen im Hardware-Buffer ansteht.
 <span style="font-family: Arial;">&nbsp;</span>

ISCHARWAITING/de - Revision history

Stefanhamburg: /* Example */

Stefanhamburg: /* See also */

Stefanhamburg: /* Remarks */

Stefanhamburg: /* (**COPIED FROM ENGLISH PAGE**) = */

Admin: 1 revision

Stefanhamburg: /* (COPIED FROM ENGLISH PAGE) = */