RTEMS | bsp/aarch64/raspberrypi: Add I2C interrupt support (!682)

Christian Mauderer (@c-mauderer) gitlab at rtems.org
Tue Aug 26 06:16:02 UTC 2025




Christian Mauderer commented on a discussion on bsps/aarch64/raspberrypi/i2c/raspberrypi-i2c.c: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/682#note_129441

 >        return rv;
 >      }
 >  
 > +#ifdef BSP_I2C_USE_INTERRUPTS
 > +    C_REG( bus ) |= C_INTD;
 > +    if ( rtems_binary_semaphore_wait_timed_ticks(
 > +           &bus->sem,
 > +           bus->base.timeout
 > +         ) != 0 ) {
 > +      rtems_binary_semaphore_try_wait( &bus->sem );
 > +      return -ETIMEDOUT;
 > +    }
 > +#else
 > +    while ( ( S_REG( bus ) & S_DONE ) == 0 ) {
 > +    }

What about the clock stretch timeout?

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/682#note_129441
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