I've been playing around with reading and writing i2c data on my fx2lp board. Here is the 1st three steps for reading i2c data according to the TRM (13.4.4)
1. Set START=1. If BERR = 1, start timer*. 2. Write the 7-bit peripheral address and the direction bit (1 for a read) to I2DAT. 3. Wait for DONE=1 or for timer to expire*. If BERR=1, go to step 1. I understand you can get a BERR if another controller on the board is trying to send data on the bus. I'm not quite clear on what do do in this case. Should I a) set a timer, wait for the timer to go off, and then start over at step 1 or b) set the timer, write the address to I2DAT, and then wait for the timer then check DONE and BERR both. Thanks for helping noobs! Dennis ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
