46 lines
1.4 KiB
Rust
46 lines
1.4 KiB
Rust
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//! TWIS example
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#![no_std]
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#![no_main]
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#![feature(type_alias_impl_trait)]
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use defmt::*;
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use embassy_executor::Spawner;
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use embassy_nrf::interrupt;
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use embassy_nrf::twis::{self, Command, Twis};
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use {defmt_rtt as _, panic_probe as _};
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#[embassy_executor::main]
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async fn main(_spawner: Spawner) {
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let p = embassy_nrf::init(Default::default());
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let irq = interrupt::take!(SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0);
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let mut config = twis::Config::default();
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// Set i2c address
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config.addr0 = 0x55;
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let mut i2c = Twis::new(p.TWISPI0, irq, p.P0_03, p.P0_04, config);
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info!("Listening...");
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loop {
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let mut buf = [0u8; 16];
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let tx_buf = [1, 2, 3, 4, 5, 6, 7, 8];
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match i2c.listen(&mut buf).await {
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Ok(Command::Read) => {
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info!("Got READ command. Writing back data:\n{:?}\n", tx_buf);
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if let Err(e) = i2c.write(&tx_buf).await {
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error!("{:?}", e);
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}
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}
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Ok(Command::Write(n)) => info!("Got WRITE command with data:\n{:?}\n", buf[..n]),
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Ok(Command::WriteRead(n)) => {
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info!("Got WRITE/READ command with data:\n{:?}", buf[..n]);
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info!("Writing back data:\n{:?}\n", tx_buf);
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if let Err(e) = i2c.write(&tx_buf).await {
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error!("{:?}", e);
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}
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}
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Err(e) => error!("{:?}", e),
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}
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}
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}
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