I2CINIT - Revision history

Admin at 18:58, 17 January 2017

2017-01-17T18:58:04Z

Admin at 18:57, 17 January 2017

2017-01-17T18:57:22Z

Admin at 18:57, 17 January 2017

2017-01-17T18:57:09Z

Admin at 18:55, 17 January 2017

2017-01-17T18:55:44Z

Admin at 18:24, 11 February 2013

2013-02-11T18:24:45Z

Admin at 18:22, 11 February 2013

2013-02-11T18:22:58Z

Admin: Created page with "= Action = Initializes the SCL and SDA pins. ..."

2013-02-11T18:21:22Z

Created page with "= Action = Initializes the SCL and SDA pins. ..."

New 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 =

[http://avrhelp.mcselec.com/i2csend.htm I2CSEND] , [http://avrhelp.mcselec.com/i2start_i2cstop__i2crbyte__i2cwbyte.htm I2CSTART] , [http://avrhelp.mcselec.com/i2start_i2cstop__i2crbyte__i2cwbyte.htm I2CSTOP] , [http://avrhelp.mcselec.com/i2start_i2cstop__i2crbyte__i2cwbyte.htm I2CRBYTE] , [http://avrhelp.mcselec.com/i2start_i2cstop__i2crbyte__i2cwbyte.htm I2CWBYTE] , [http://avrhelp.mcselec.com/i2c_twi.htm I2C_TWI Library for using TWI]

 

 

= Example =

= <source lang="bascomavr">
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
</source> Example XMEGA =

 <source lang="bascomavr">
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
</source> {{Languages}}

[[Category:BASCOM Language Reference]]

@@ Line 68: / Line 68: @@
 Print X 'print it
 </source><br/>
-= <span class="f_Header">Example&nbsp;</span><span style="font-size: 14pt;">Mega328PB</span> =
+= <span class="f_Header">Example&nbsp;Mega328PB</span> =
 <br/><source lang="bascomavr">

@@ Line 68: / Line 68: @@
 Print X 'print it
 </source><br/>
-= <span class="f_Header">Example XMEGA1</span> =
+= <span class="f_Header">Example&nbsp;</span><span style="font-size: 14pt;">Mega328PB</span> =
 <br/><source lang="bascomavr">

@@ Line 68: / Line 68: @@
 Print X 'print it
 </source><br/>
 = <span class="f_Header">Example XMEGA</span> =

← Older revision		Revision as of 18:55, 17 January 2017
Line 28:		Line 28:

	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.		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.
		+
		+
		+
		+	For normal AVR processors with multiple TWI interfaces you can specify the interface : TWI or TWI1.
		+
		+	When no parameter is provided, the first default TWI will be selected.

@@ Line 43: / Line 43: @@
 = <span class="f_Header">See also</span> =
-[http://avrhelp.mcselec.com/i2csend.htm I2CSEND]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/i2start_i2cstop__i2crbyte__i2cwbyte.htm I2CSTART]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/i2start_i2cstop__i2crbyte__i2cwbyte.htm I2CSTOP]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/i2start_i2cstop__i2crbyte__i2cwbyte.htm I2CRBYTE]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/i2start_i2cstop__i2crbyte__i2cwbyte.htm I2CWBYTE]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/i2c_twi.htm I2C_TWI Library for using TWI]
+[[I2CSEND]] , [[I2CSTART]] , [[I2CSTOP]] , [[I2CRBYTE]] , [[I2CWBYTE]] , [[I2C-TWI|I2C TWI Library for using TWI]]
 <span style="font-family: Arial;">&nbsp;</span>

@@ Line 51: / Line 51: @@
 = <span class="f_Header">Example</span> =
-= <br/><source lang="bascomavr">
+<br/><source lang="bascomavr">
 Config Sda = Portb.5
 Config Scl = Portb.7
@@ Line 61: / Line 61: @@
 I2creceive Slave , X 'get the value
 Print X 'print it
-</source><br/><span style="font-size: 19px; font-weight: bold;">Example XMEGA</span> =
+</source><br/>
 <br/><source lang="bascomavr">