CONFIG 1WIRE/de - Revision history

Michael K: /* Example */

2013-03-01T17:26:25Z

Example

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Michael K: /* See also */

2013-03-01T17:25:28Z

Michael K: /* Extended */

2013-03-01T17:25:02Z

Extended

Michael K: /* Extended */

2013-03-01T17:18:15Z

Extended

Michael K: /* Beschreibung */

2013-03-01T17:03:27Z

Beschreibung

Michael K: /* Beschreibung */

2013-02-24T19:59:58Z

Beschreibung

Michael K: /* Remarks */

2013-02-24T19:59:36Z

Remarks

Michael K: /* (COPIED FROM ENGLISH PAGE) = */

2013-02-23T20:23:17Z

(**COPIED FROM ENGLISH PAGE**) =

Admin: 1 revision

2013-02-15T19:13:11Z

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Admin: Created page with "= Action = Configure the pin to use for 1WIRE statements and override the compiler setting.
2013-02-07T18:24:17Z

Created page with "= Action = Configure the pin to use for 1WIRE statements and override the compiler setting. <s..."

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== (COPIED FROM ENGLISH PAGE) === Action =

Configure the pin to use for 1WIRE statements and override the compiler setting.

 

 

= Syntax =

CONFIG 1WIRE = pin [, extended=0|1]

 

 

= Remarks =
<div style="padding: 0px; margin: 0px 0px 0px 4px;">
{| width="485" 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="20%" style="width: 94px; border: 1px solid rgb(0, 0, 0);" |
Pin

| valign="top" width="106%" style="width: 382px; border: 1px solid rgb(0, 0, 0);" |
The port pin to use such as PORTB.0

|- style="vertical-align: top;"
| valign="top" width="20%" style="width: 94px; border: 1px solid rgb(0, 0, 0);" |
extended

| valign="top" width="106%" style="width: 382px; border: 1px solid rgb(0, 0, 0);" |
An optional constant value which need to be 0 or 1.

|}
</div>
 

The CONFIG 1WIRE statement overrides the compiler setting. It is the preferred that you use it. This way the setting is stored in your source code.

You can configure only one pin for the 1WIRE statements because the idea is that you can attach multiple 1WIRE devices to the 1WIRE bus.

 

You can however use multiple pins and thus multiple busses. All 1wire commands and functions need the port and pin in that case.

 

The 1wire commands and function will automatically set the DDR and PORT register bits to the proper state. You do not need to bring the pins into the right state yourself.

 

It is important that you use a pull up resistor of 4K7 ohm on the 1wire pin. The pull up resistor of the AVR is not sufficient.

 

Also notice that some 1wire chips also need +5V. 1 wire is just marketing since you need GND anyway. The least is 2 wires and typical you need 3 wires.

 

= Extended =

The extended option is only needed when you use multiple busses/pins and if these are pins mix normal and extended addresses.

Let's clear that up. When the 1wire code was written in 1995 all the port addresses were normal I/O addresses. These are addresses that fit in the I/O space (address < &H60).  To save code, register R31 was cleared in the library and the port register was passed in R30.

When Atmel introduced the extended I/O registers with address >&HFF, it was possible to set R31 to a fixed value when the user port was an extended I/O address.

But when you want to mix the addresses, there is no other way then to pass the word address of the I/O register to the library code.

And that is exactly what EXTENDED=1 will do. It will use more code. This support was written for a customer that already made his PCB's. We do advise to use the same port when you use multiple pins.

 

 

= See also =

[[1WRESET]] , [[1WREAD]] , [[1WWRITE]] , [[1WIRECOUNT|1WIRECOUNT ]], [[1WRESET]] , [[1WSEARCHFIRST]] , [[1WSEARCHNEXT]]

 

 

= Example =

 <source lang="bascomavr">
'--------------------------------------------------------------------------------
'name : 1wire.bas
'copyright : (c) 1995-2005, MCS Electronics
'purpose : demonstrates 1wreset, 1wwrite and 1wread()
'micro : Mega48
'suited for demo : yes
'commercial addon needed : no
' pull-up of 4K7 required to VCC from Portb.2
' DS2401 serial button connected to Portb.2
'--------------------------------------------------------------------------------

$regfile = "m48def.dat"
$crystal = 8000000

$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

Config Com1 = Dummy , Synchrone = 0 , Parity = None , Stopbits = 1 , Databits = 8 , Clockpol = 0

'when only bytes are used, use the following lib for smaller code
$lib "mcsbyte.lib"

Config 1wire = Portb.0 'use this pin
'On the STK200 jumper B.0 must be inserted
Dim Ar(8) As Byte , A As Byte , I As Byte

Do
Wait 1
1wreset 'reset the device
Print Err 'print error 1 if error
1wwrite &H33 'read ROM command
For I = 1 To 8
Ar(i) = 1wread() 'place into array
Next

'You could also read 8 bytes a time by unremarking the next line
'and by deleting the for next above
'Ar(1) = 1wread(8) 'read 8 bytes

For I = 1 To 8
Print Hex(ar(i)); 'print output
Next
Print 'linefeed
Loop

'NOTE THAT WHEN YOU COMPILE THIS SAMPLE THE CODE WILL RUN TO THIS POINT
'THIS because of the DO LOOP that is never terminated!!!

'New is the possibility to use more than one 1 wire bus
'The following syntax must be used:
For I = 1 To 8
Ar(i) = 0 'clear array to see that it works
Next

1wreset Pinb , 2 'use this port and pin for the second device
1wwrite &H33 , 1 , Pinb , 2 'note that now the number of bytes must be specified!
'1wwrite Ar(1) , 5,pinb,2

'reading is also different
Ar(1) = 1wread(8 , Pinb , 2) 'read 8 bytes from portB on pin 2

For I = 1 To 8
Print Hex(ar(i));
Next

'you could create a loop with a variable for the bit number !
For I = 0 To 3 'for pin 0-3
1wreset Pinb , I
1wwrite &H33 , 1 , Pinb , I
Ar(1) = 1wread(8 , Pinb , I)
For A = 1 To 8
Print Hex(ar(a));
Next
Print
Next
End

Xmega Example
'--------------------------------------------------------------------------------
'name : XM128-1wire.bas
'copyright : (c) 1995-2010, MCS Electronics
'purpose : demonstrates 1wreset, 1wwrite and 1wread()
'micro : Xm128A1
'suited for demo : no
'commercial addon needed : no
' pull-up of 4K7 required to VCC from Portb.0
' DS2401 serial button connected to Portb.0
'--------------------------------------------------------------------------------
$regfile = "xm128a1def.dat"
$crystal = 32000000

$lib "xmega.lib" : $external _xmegafix_clear : $external _xmegafix_rol_r1014

$hwstack = 32 ' default use 32 for the hardware stack
$swstack = 32 'default use 10 for the SW stack
$framesize = 32 'default use 40 for the frame space

'First Enable The Osc Of Your Choice
Config Osc = Enabled , 32mhzosc = Enabled

'configure the systemclock
Config Sysclock = 32mhz , Prescalea = 1 , Prescalebc = 1_1

'configure UART
Config Com1 = 19200 , Mode = Asynchroneous , Parity = None , Stopbits = 1 , Databits = 8

'configure 1wire pin
Config 1wire = Portb.0 'use this pin

Dim Ar(8) As Byte , A As Byte , I As Byte

Print "start"

A = 1wirecount()
Print A ; " devices found"

'get first
Ar(1) = 1wsearchfirst()

For I = 1 To 8 'print the number
Print Hex(ar(i));
Next
Print

Do
'Now search for other devices
Ar(1) = 1wsearchnext() ' get next device
For I = 1 To 8
Print Hex(ar(i));
Next
Print
Loop Until Err = 1

Waitms 2000

Do
1wreset 'reset the device
Print Err 'print error 1 if error

1wwrite &H33 'read ROM command
' Ar(1) = 1wread(8) you can use this instead of the code below

For I = 1 To 8
Ar(i) = 1wread() 'place into array
Next

For I = 1 To 8
Print Hex(ar(i)); 'print output
Next
Print 'linefeed
Waitms 1000
Loop

End
</source> {{Languages}}

[[Category:BASCOM Language Reference/de]]

@@ Line 72: / Line 72: @@
 <span style="font-family: Arial;">&nbsp;</span>
-= <span class="f_Header">See also</span> =
+= <span class="f_Header">Siehe auch</span> =
 [[1WRESET]]&nbsp;,&nbsp;[[1WREAD]]&nbsp;,&nbsp;[[1WWRITE]]&nbsp;,&nbsp;[[1WIRECOUNT|1WIRECOUNT&nbsp;]],&nbsp;[[1WRESET]]&nbsp;,&nbsp;[[1WSEARCHFIRST]]&nbsp;,&nbsp;[[1WSEARCHNEXT]]

@@ Line 60: / Line 60: @@
 Die Extended Option wird nur bei mehreren Bussen/Pins gebraucht, und wenn diese Pins normale und erweiterte Adressen mischen.
 Hier die Aufklärung: Als der 1-wire-Code 1995 geschrieben wurde, waren alle Portadressen normale I/O Adressen. Also Adressen, die in den I/O Bereich bis &H60 passten. &nbsp; Um Code zu sparen, wurde Register R31 in der Bibliothek gelöscht und das Portregister in R30 übergeben.
 Als Atmel die erweiterten I/O Register mit Adressen > &HFF einführte, war es möglich, R31 auf einen festen Wert zu setzen, wenn der User-Port eine erweiterte I/O Adresse hatte.
-Aber wenn die Adressen gemischt werden sollen, gibt es nur den Weg, die Word-Adresse des I/O Registers der Bibliothek zu übergeben.
+Ein Mischen der Adressen geht aber nur über den Weg, die Word-Adresse des I/O Registers der Bibliothek zu übergeben.
-But when you want to mix the addresses, there is no other way then to pass the word address of the I/O register to the library code.
 Und genau das macht EXTENDED = 1. Es braucht dadurch mehr Code. Diese Option wurde für einen Nutzer geschrieben, der seine Leiterplatten schon fertig hatte. Wir raten, den gleichen Port zu benutzen, wenn mehrere Pins gebraucht werden.

@@ Line 59: / Line 59: @@
 = <span class="f_Header">Extended</span> =
-The extended option is only needed when you use multiple busses/pins and if these are pins mix normal and extended addresses.
+Die Extended Option wird nur bei mehreren Bussen/Pins gebraucht, und wenn diese Pins normale und erweiterte Adressen mischen.
 Let's clear that up. When the 1wire code was written in 1995 all the port addresses were normal I/O addresses. These are addresses that fit in the I/O space (address < &H60). &nbsp;To save code, register R31 was cleared in the library and the port register was passed in R30.
+Als Atmel die erweiterten I/O Register mit Adressen > &HFF einführte, war es möglich, R31 auf einen festen Wert zu setzen, wenn der User-Port eine erweiterte I/O Adresse hatte.
 When Atmel introduced the extended I/O registers with address >&HFF, it was possible to set R31 to a fixed value when the user port was an extended I/O address.
 But when you want to mix the addresses, there is no other way then to pass the word address of the I/O register to the library code.
-And that is exactly what EXTENDED=1 will do. It will use more code. This support was written for a customer that already made his PCB's. We do advise to use the same port when you use multiple pins.
+Und genau das macht EXTENDED = 1. Es braucht dadurch mehr Code. Diese Option wurde für einen Nutzer geschrieben, der seine Leiterplatten schon fertig hatte. Wir raten, den gleichen Port zu benutzen, wenn mehrere Pins gebraucht werden.
 <span style="font-family: Arial;">&nbsp;</span>

@@ Line 36: / Line 36: @@
 <span style="font-family: Arial;">&nbsp;</span>
-Der CONFIG 1WIRE Befehl überschreibt die Compiler-Einstellungen.
+Der CONFIG 1WIRE Befehl überschreibt die Compiler-Einstellungen und sollte bevorzugt werden, da auf diesem Weg die Einstellung im Quellcode gespeichert wird.
-<br>The CONFIG 1WIRE statement overrides the compiler setting. It is the preferred that you use it. This way the setting is stored in your source code.
+Es kann nur ein Pin für 1wire angegeben werden, da mehrere 1-Wire Gräte an einem Bus betrieben werden können.
-−
-You can configure only one pin for the 1WIRE statements because the idea is that you can attach multiple 1WIRE devices to the 1WIRE bus.
 <span style="font-family: Arial;">&nbsp;</span>
-You can however use multiple pins and thus multiple busses. All 1wire commands and functions need the port and pin in that case.
+Man kann auch mehrere Pins und damit mehrere Busse benutzen. Für diesen Fall benötigen alle 1-Wire Befehle und Funktionen die Angabe des Ports und des Pins.
 <span style="font-family: Arial;">&nbsp;</span>
-The 1wire commands and function will automatically set the DDR and PORT register bits to the proper state. You do not need to bring the pins into the right state yourself.
+Die 1-Wire Kommandos und Funktionen setzen automatisch das Datenrichtungsregister und das Portregister in den richtigen Zustand.
 <span style="font-family: Arial;">&nbsp;</span>
-It is important that you use a pull up resistor of 4K7 ohm on the 1wire pin. The pull up resistor of the AVR is not sufficient.
+Es ist wichtig, dass am 1-wire-Bus ein Pullup-Widerstand von 4,7 Kiloohm vorhanden ist. Der interne Pullup-Widerstand des AVRs ist nicht geeignet.
 <span style="font-family: Arial;">&nbsp;</span>
-Also notice that some 1wire chips also need +5V. 1 wire is just marketing since you need GND anyway. The least is 2 wires and typical you need 3 wires.
+Einige 1-Wire-Chips benötigen eine extra 5V-versorgung. 1-Wire ist nur ein Werbe-Begriff, die GND-Leitung wird trotzdem noch benötigt. Das Mindeste sind also 2 Leitungen, typischerweise werden 3 gebraucht.
 &nbsp;

@@ Line 30: / Line 30: @@
 | valign="top" width="106%" style="width: 382px; border: 1px solid rgb(0, 0, 0);" |
- Eine optionale Konstante, welche 0 oder 1 sein muss.
+Eine optionale Konstante, welche 0 oder 1 sein muss.
 |}

@@ Line 1: / Line 1: @@
-== (**COPIED FROM ENGLISH PAGE**) === <span class="f_Header">Action</span> =
+= <span class="f_Header">Funktion</span> =
-Configure the pin to use for 1WIRE statements and override the compiler setting.
+Konfiguriert den Pin zur Benutzung mit 1-Wire und überschreibt die Compiler-Einstellung.
 <span style="font-family: Arial;">&nbsp;</span>

CONFIG 1WIRE/de - Revision history

Michael K: /* Example */

Michael K: /* See also */

Michael K: /* Extended */

Michael K: /* Extended */

Michael K: /* Beschreibung */

Michael K: /* Beschreibung */

Michael K: /* Remarks */

Michael K: /* (**COPIED FROM ENGLISH PAGE**) = */

Admin: 1 revision

Michael K: /* (COPIED FROM ENGLISH PAGE) = */