Re: [Avr-list] I2C on ATtiny45
Olivier MATZ ?: No, if you plan to use the hardware TWI module (i2c), the pin assignation is fixed. In my opinion, the 2 solutions are: - Modify the pcb to invert the 2 pins - If it's really impossible, implement a software i2c, which is not a simple task. By the way, there's an i2c module in aversive: http://cvsweb.droids-corp.org/cgi-bin/viewcvs.cgi/aversive/modules/comm/i2c/ Olivier Thank you very much for your promptest respond, Olivier! I've found one implementation of software i2c master here: http://homepage.hispeed.ch/peterfleury/group__pfleury__ic2master.html Now trying to get it working! ___ Avr-list mailing list Avr-list@droids-corp.org CVSWEB : http://cvsweb.droids-corp.org/cgi-bin/viewcvs.cgi/aversive WIKI : http://wiki.droids-corp.org/index.php/Aversive DOXYGEN : http://zer0.droids-corp.org/doxygen_aversive/html/ BUGZILLA : http://bugzilla.droids-corp.org COMMIT LOGS : http://zer0.droids-corp.org/aversive_commitlog
Re: [Avr-list] I2C on ATtiny45
Sorry, I forgot to CC you. Olivier On Wed, Oct 08, 2008 at 09:57:02AM +0200, Olivier MATZ wrote: > Hi Ali, > > > The question is: Is it possible to reconfigure somehow pin assignation > > in order to use hardware USI module with my pin assignation? I never > > used micros from ATMEL before so any suggest highly appreciable. > > No, if you plan to use the hardware TWI module (i2c), the pin > assignation is fixed. In my opinion, the 2 solutions are: > - Modify the pcb to invert the 2 pins > - If it's really impossible, implement a software i2c, which is > not a simple task. > > By the way, there's an i2c module in aversive: > http://cvsweb.droids-corp.org/cgi-bin/viewcvs.cgi/aversive/modules/comm/i2c/ > > Olivier ___ Avr-list mailing list Avr-list@droids-corp.org CVSWEB : http://cvsweb.droids-corp.org/cgi-bin/viewcvs.cgi/aversive WIKI : http://wiki.droids-corp.org/index.php/Aversive DOXYGEN : http://zer0.droids-corp.org/doxygen_aversive/html/ BUGZILLA : http://bugzilla.droids-corp.org COMMIT LOGS : http://zer0.droids-corp.org/aversive_commitlog
Re: [Avr-list] I2C on ATtiny45
Hi Ali, > The question is: Is it possible to reconfigure somehow pin assignation > in order to use hardware USI module with my pin assignation? I never > used micros from ATMEL before so any suggest highly appreciable. No, if you plan to use the hardware TWI module (i2c), the pin assignation is fixed. In my opinion, the 2 solutions are: - Modify the pcb to invert the 2 pins - If it's really impossible, implement a software i2c, which is not a simple task. By the way, there's an i2c module in aversive: http://cvsweb.droids-corp.org/cgi-bin/viewcvs.cgi/aversive/modules/comm/i2c/ Olivier ___ Avr-list mailing list Avr-list@droids-corp.org CVSWEB : http://cvsweb.droids-corp.org/cgi-bin/viewcvs.cgi/aversive WIKI : http://wiki.droids-corp.org/index.php/Aversive DOXYGEN : http://zer0.droids-corp.org/doxygen_aversive/html/ BUGZILLA : http://bugzilla.droids-corp.org COMMIT LOGS : http://zer0.droids-corp.org/aversive_commitlog
[Avr-list] I2C on ATtiny45
Hi All! I was given a pcb with ATtiny45 connected to AD7416 temperature sensor via I2C bus. My task was to write a program that reads the temperature but here I've faced some troubles. First the pin assignation confused me. PB0 is used for SCL and PB1 is used for SDA in that pcb, while datasheet points that PB0 should be used for SDA and PB2 for SCL. The question is: Is it possible to reconfigure somehow pin assignation in order to use hardware USI module with my pin assignation? I never used micros from ATMEL before so any suggest highly appreciable. ___ Avr-list mailing list Avr-list@droids-corp.org CVSWEB : http://cvsweb.droids-corp.org/cgi-bin/viewcvs.cgi/aversive WIKI : http://wiki.droids-corp.org/index.php/Aversive DOXYGEN : http://zer0.droids-corp.org/doxygen_aversive/html/ BUGZILLA : http://bugzilla.droids-corp.org COMMIT LOGS : http://zer0.droids-corp.org/aversive_commitlog
