RTEMS | Add the support for i2c driver in the aarch64/raspberrypi bsp (!363)

Shaunak Datar (@skdatar) gitlab at rtems.org
Wed Mar 26 15:13:27 UTC 2025




Shaunak Datar commented on a discussion on bsps/aarch64/raspberrypi/i2c/raspberrypi-i2c.c: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/363#note_121797

 > -        {
 > -            return -EIO;
 > +    } 
 > +    else 
 > +    {
 > +        while (!(BCM2835_REG(bus->base_address + BCM2711_I2C_STATUS) & S_DONE)) {
 > +            while (bus->remaining_bytes > 0 && 
 > +                (BCM2835_REG(bus->base_address + BCM2711_I2C_STATUS) & S_TXD)) {
 > +                BCM2835_REG(bus->base_address + BCM2711_I2C_FIFO) = *(bus->current_buffer);
 > +                bus->current_buffer++;
 > +                bus->remaining_bytes--;
 > +                if(bus->remaining_bytes == 0){
 > +                    break;
 > +                }
 > +            }
 > +            if(bus->remaining_bytes == 0){

This has also been fixed with the latest push

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/363#note_121797
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