Struct Twi

pub struct Twi<'a> { /* private fields */ }

Provides access to the TWI (aka I2C).

See: Twi::attach_slave() and Twi::detach_slave().

Implementations

impl<'a> Twi<'a>

pub fn attach_slave(&mut self, slave: impl TwiSlave + 'static) -> TwiSlaveId

Attaches given slave into this TWI, executing it for each packet received on this interface - slave can then decide whether to respond or ignore the packet.

When multiple slaves are attached, they all get executed in the order of the attachment until any slave responds (if any).

See the twi.rs example for usage.

See also: Self::attach_slave_fn().

pub fn attach_slave_fn( &mut self, slave: impl FnMut(TwiPacket) -> Option<TwiPacket> + 'static, ) -> TwiSlaveId

Shortcut for Self::attach_slave() that allows to create a device with just a function:

let mut avr = AvrTester::test();

avr.twi0().attach_slave_fn(|packet| {
    if packet.addr != 0x33 {
        return None;
    }

    if packet.is_start() || packet.is_stop() {
        return Some(packet.respond_ack());
    }

    if packet.is_write() {
        todo!();
    }

    if packet.is_read() {
        todo!();
    }

    None
});

See Self::attach_slave() for details.

pub fn detach_slave(&mut self, id: TwiSlaveId)

Detaches given slave from this TWI, preventing it from being executed again.

See: Self::attach_slave().