CONFIG XPIN/de

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

Configures all other features of a Xmega port or port pin like for example pullup but not the data direction.

You still need to use PORTx = state or PINx.y = state to configure the data direction of that port or pin in addition to CONFIG XPIN.

 

 

Syntax

CONFIG XPIN=PORT|PIN, INVERTIO=invio, SLEWRATE=slew, OUTPULL=pull, SENSE=sense

 

 

Remarks

Normal AVR port pins can be configured as an input or output. When configured as an input (CONFIG PIN=INPUT) they can also be set to tri-state (write a 0 to the PORT register) or to activate the pull up resistor(write a 1 to the PORT register).

The xmega has many more options. The Xmega manual explains all the options.

The CONFIG XPIN statement will set the proper registers.

 

PORT PIN	The pin to be configured. For example PORTC.0 When configuring the whole port (all the pins must have the same functionality), use PORT. For example : PORTD
INVERTIO	This option will invert the data for both input and output modes. Possible values : ENABLED (will invert data), DISABLED(normal mode)
SLEWRATE	Will enable or disable the slewrate. Enabling the slew rate will increase the rise/fall time by 50%-150%. Possible values : ENABLED, DISABLED
OUTPULL	Sets the output or pull mode. The following options are available: - TOTEM : output totem pole - BUSKEEPER : output totem pole, input bus keeper - PULLDOWN : output totem pole, input pull down - PULLUP : output totem pole, input pull up - WIREDOR : output wired OR - WIREDAND: output wired AND -WIREDORPULL : output wired OR, input pull down -WIREDANDPULL : output wired AND, input pull up
SENSE	In input mode, the trigger sense can be configured. Possible values : - BOTH : sense both edges - RISING : sense rising edge -FALLING : sense falling edge -LOW_LEVEL  :sense low level - INP_DISABLED : digital input buffer disabled (only PORTA-PORTF)

 

Normal AVR code that use : PORTX.Y=1  to activate the pul up, should be written as : CONFIG XPIN=PORTX.Y,OUTPULL=PULLUP

 

 

 

See also

CONFIG PIN, CONFIG INT

 

Example

Config Porte.5 = Input
Config Xpin = Porte.5 , Outpull = Pullup , Sense = Falling 'enable Pull up and reaction on falling edge

$regfile = "xm256a3budef.dat"
$Crystal = 32000000 '32MHz
 
Config Xpin = Portc.0 , Slewrate = Enabled , Outpull = Buskeeper , Sense = Low_level
Config Xpin = Portc.1 , Slewrate = Enabled , Outpull = Buskeeper , Sense = Low_level
 
'setup the whole port at once
Config Xpin = Portd , Slewrate = Enabled , Outpull = Buskeeper , Sense = Low_level

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