zaubentrucker/co2_sensing
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Set up communication with sensor

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This commit is contained in:
Frederik Menke 2024-07-20 16:52:28 +02:00
parent 992ae640a6
commit 8c3f7c70cc
1 changed files with 23 additions and 1 deletions
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24
src/main.rs
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@ -22,7 +22,6 @@ use {defmt_rtt as _, panic_probe as _};
use embassy_rp::i2c::{self, Config}; use embassy_rp::i2c::{self, Config};
use embassy_time::{Duration, Timer}; use embassy_time::{Duration, Timer};
use embedded_hal_async::i2c::I2c;
bind_interrupts!(struct Irqs { bind_interrupts!(struct Irqs {
I2C1_IRQ => i2c::InterruptHandler<embassy_rp::peripherals::I2C1>; I2C1_IRQ => i2c::InterruptHandler<embassy_rp::peripherals::I2C1>;
@ -30,6 +29,11 @@ bind_interrupts!(struct Irqs {
struct DummyTimesource(); struct DummyTimesource();
/// I2C Address of the co2 sensor
const CCS811_I2C_ADDRESS: u16 = 0x5A;
/// I2C Register addresses of the co2 sensor
const CCS811_REGISTER_STATUS: u8 = 0x00;
impl embedded_sdmmc::TimeSource for DummyTimesource { impl embedded_sdmmc::TimeSource for DummyTimesource {
fn get_timestamp(&self) -> embedded_sdmmc::Timestamp { fn get_timestamp(&self) -> embedded_sdmmc::Timestamp {
embedded_sdmmc::Timestamp { embedded_sdmmc::Timestamp {
@ -52,12 +56,30 @@ async fn main(spawner: Spawner) {
// .spawn(write_to_sd(p.SPI1, p.PIN_10, p.PIN_11, p.PIN_12, p.PIN_16)) // .spawn(write_to_sd(p.SPI1, p.PIN_10, p.PIN_11, p.PIN_12, p.PIN_16))
// .unwrap(); // .unwrap();
// Wake pin is not required as long as its kept low at all times
// let mut nWAKE = gpio::Output::new(p.PIN_13, Level::High);
let sda = p.PIN_14; let sda = p.PIN_14;
let scl = p.PIN_15; let scl = p.PIN_15;
info!("set up i2c "); info!("set up i2c ");
let mut i2c = embassy_rp::i2c::I2c::new_async(p.I2C1, scl, sda, Irqs, Config::default()); let mut i2c = embassy_rp::i2c::I2c::new_async(p.I2C1, scl, sda, Irqs, Config::default());
// Wait for sensor to boot
Timer::after(Duration::from_secs(1)).await;
debug!("Writing to I2C");
let mut status = [42];
i2c.write_async(CCS811_I2C_ADDRESS, [CCS811_REGISTER_STATUS])
.await
.unwrap();
debug!("Reading from I2C");
i2c.read_async(CCS811_I2C_ADDRESS, &mut status)
.await
.unwrap();
info!("Reported status: {}", status);
debug!("TASK ENDED: Main") debug!("TASK ENDED: Main")
} }