embassy/examples/nrf/src/bin/twim.rs
2022-04-02 04:35:06 +02:00

33 lines
813 B
Rust

//! Example on how to read a 24C/24LC i2c eeprom.
//!
//! Connect SDA to P0.03, SCL to P0.04
#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use defmt::*;
use embassy::executor::Spawner;
use embassy_nrf::twim::{self, Twim};
use embassy_nrf::{interrupt, Peripherals};
use defmt_rtt as _; // global logger
use panic_probe as _;
const ADDRESS: u8 = 0x50;
#[embassy::main]
async fn main(_spawner: Spawner, p: Peripherals) {
info!("Initializing TWI...");
let config = twim::Config::default();
let irq = interrupt::take!(SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0);
let mut twi = Twim::new(p.TWISPI0, irq, p.P0_03, p.P0_04, config);
info!("Reading...");
let mut buf = [0u8; 16];
unwrap!(twi.blocking_write_read(ADDRESS, &mut [0x00], &mut buf));
info!("Read: {=[u8]:x}", buf);
}