I2C-TWI - Revision history

Admin at 18:53, 17 January 2017

2017-01-17T18:53:34Z

Admin at 11:20, 4 February 2014

2014-02-04T11:20:09Z

Admin: Created page with "
By default BASCOM will use software routines when you use I2C statements. This because when the first AVR chips were introduced, there ..."

2013-02-05T18:26:16Z

Created page with "<div id="idcontent"><div id="innerdiv"> By default BASCOM will use software routines when you use I2C statements. This because when the first AVR chips were introduced, there ..."

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By default BASCOM will use software routines when you use I2C statements. This because when the first AVR chips were introduced, there was no TWI yet. Atmel named it TWI because Philips is the inventor of I2C. But TWI is the same as I2C.

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So BASCOM allows you to use I2C on every AVR chip. Most newer AVR chips have build in hardware support for I2C. With the I2C_TWI lib you can use the TWI which has advantages as it require less code.

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Read more about I2C in the [[Using the I2C protocol|hardware]] section.

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To force BASCOM to use the TWI, you need to insert the following statement into your code:

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$LIB "I2C_TWI.LBX"

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You also need to choose the correct SCL and SDA pins with the CONFIG SCL and CONFIG SDA statements.

The TWI will save code but the disadvantage is that you can only use the fixed SCL and SDA pins.

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[[Category:ASM Libraries and Add-Ons]]

← Nächstältere Version		Version vom 17. Januar 2017, 18:53 Uhr
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	The TWI will save code but the disadvantage is that you can only use the fixed SCL and SDA pins.		The TWI will save code but the disadvantage is that you can only use the fixed SCL and SDA pins.
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		+	For XMEGA the default is using the hardware TWI. You can force bascom to use the software solution using [[$FORCESOFTI2C]]

@@ Zeile 2: / Zeile 2: @@
 By default BASCOM will use software routines when you use I2C statements. This because when the first AVR chips were introduced, there was no TWI yet. Atmel named it TWI because Philips is the inventor of I2C. But TWI is the same as I2C.
-<span style="font-family: 'Arial';  color: #000000">&nbsp;</span>
+<span style="font-family: 'Arial'; color: #000000">&nbsp;</span>
 So BASCOM allows you to use I2C on every AVR chip. Most newer AVR chips have build in hardware support for I2C. With the I2C_TWI lib you can use the TWI which has advantages as it require less code.
-<span style="font-family: 'Arial';  color: #000000">&nbsp;</span>
+<span style="font-family: 'Arial'; color: #000000">&nbsp;</span>
 Read more about I2C in the [[Using the I2C protocol|hardware]] section.
-<span style="font-family: 'Arial';  color: #000000">&nbsp;</span>
+<span style="font-family: 'Arial'; color: #000000">&nbsp;</span>
 To force BASCOM to use the TWI, you need to insert the following statement into your code:
-<span style="font-family: 'Arial';  color: #000000">&nbsp;</span>
+<span style="font-family: 'Arial'; color: #000000">&nbsp;</span>
 $LIB "I2C_TWI.LBX"
-<span style="font-family: 'Arial';  color: #000000">&nbsp;</span>
+<span style="font-family: 'Arial'; color: #000000">&nbsp;</span>
 You also need to choose the correct SCL and SDA pins with the CONFIG SCL and CONFIG SDA statements.
 The TWI will save code but the disadvantage is that you can only use the fixed SCL and SDA pins.

I2C-TWI - Revision history

Admin at 18:53, 17 January 2017

Admin at 11:20, 4 February 2014

Admin: Created page with " By default BASCOM will use software routines when you use I2C statements. This because when the first AVR chips were introduced, there ..."

Admin: Created page with "
By default BASCOM will use software routines when you use I2C statements. This because when the first AVR chips were introduced, there ..."