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_123048
> + }
> + }
> +
> + for ( i = 0; i < msg_count; i++ ) {
> + bus->current_buffer = msgs[ i ].buf;
> + bus->current_buffer_size = msgs[ i ].len;
> + bus->remaining_transfers = ( bus->current_buffer_size + (BCM2711_I2C_DLEN_MASK - 1) ) / BCM2711_I2C_DLEN_MASK;
> +
> + if ( msgs[ i ].flags & I2C_M_TEN ) // 10-bit slave address
> + {
> + /* Add the 8 lsbs of the 10-bit slave address to the fifo register*/
> + BCM2835_REG( bus->base_address + BCM2711_I2C_FIFO ) = msgs[ i ].addr &
> + BCM2711_I2C_FIFO_MASK;
> + msbs = msgs[ i ].addr >> 8;
> + BCM2835_REG( bus->base_address + BCM2711_I2C_SLAVE_ADDRESS ) = ( 0x1E
> + << 2 ) |
That is the combination 1110xx which is specified in the data sheet for 10-bit slave addressing. I will create a macro for it and update that
--
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/363#note_123048
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