I2CINIT/de

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

Initializes the SCL and SDA pins.

 

 

Syntax

I2CINIT

I2CINIT #const

 

 

 

Remarks

By default the SCL and SDA pins are in the right state when you reset the chip. Both the PORT and the DDR bits are set to 0 in that case.

When you need to change the DDR and/or PORT bits you can use I2CINIT to bring the pins in the proper state again.

 

For the XMEGA which has multiple TWI interfaces you can use a channel to specify the TWI interface otherwise the default TWIC will be used.

 

 

ASM

The I2C routines are located in i2c.lib. _i2c_init is called.

 

 

See also

I2CSEND , I2CSTART , I2CSTOP , I2CRBYTE , I2CWBYTE , I2C TWI Library for using TWI

 

 

Example

Config Sda = Portb.5
Config Scl = Portb.7
I2cinit
 
Dim X As Byte , Slave As Byte
X = 0 'reset variable
Slave = &H40 'slave address of a PCF 8574 I/O IC
I2creceive Slave , X 'get the value
Print X 'print it

Example XMEGA

Open "twic" For Binary As #4 ' or use TWID,TWIE oR TWIF
Config TwiC = 100000 'CONFIG TWI will ENABLE the TWI master interface
I2cinit #4

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