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//! TWIS example
#![no_std]
#![no_main]
use defmt::*;
use embassy_executor::Spawner;
use embassy_nrf::twis::{self, Command, Twis};
use embassy_nrf::{bind_interrupts, peripherals};
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
TWISPI0 => twis::InterruptHandler<peripherals::TWISPI0>;
});
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let p = embassy_nrf::init(Default::default());
let mut config = twis::Config::default();
config.address0 = 0x55; // Set i2c address
let mut i2c = Twis::new(p.TWISPI0, Irqs, p.P0_03, p.P0_04, config);
info!("Listening...");
loop {
let response = [1, 2, 3, 4, 5, 6, 7, 8];
// This buffer is used if the i2c master performs a Write or WriteRead
let mut buf = [0u8; 16];
match i2c.listen(&mut buf).await {
Ok(Command::Read) => {
info!("Got READ command. Respond with data:\n{:?}\n", response);
if let Err(e) = i2c.respond_to_read(&response).await {
error!("{:?}", e);
}
}
Ok(Command::Write(n)) => info!("Got WRITE command with data:\n{:?}\n", buf[..n]),
Ok(Command::WriteRead(n)) => {
info!("Got WRITE/READ command with data:\n{:?}", buf[..n]);
info!("Respond with data:\n{:?}\n", response);
if let Err(e) = i2c.respond_to_read(&response).await {
error!("{:?}", e);
}
}
Err(e) => error!("{:?}", e),
}
}
}
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