63 lines
1.6 KiB
Rust
63 lines
1.6 KiB
Rust
//! Embassy "async" version of ead calibration data from BMP180 sensor
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//!
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//! This example dumps the calibration data from a BMP180 sensor by reading by reading
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//! with the direct I2C API and the embedded-hal-async I2C API.
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//!
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//! Following pins are used:
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//! - SDA => GPIO4
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//! - SCL => GPIO5
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//!
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//! Depending on your target and the board you are using you have to change the
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//! pins.
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//!
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//% CHIPS: esp32 esp32c2 esp32c3 esp32c6 esp32h2 esp32s2 esp32s3
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//% FEATURES: embassy embassy-generic-timers
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#![no_std]
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#![no_main]
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use embassy_executor::Spawner;
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use embassy_time::{Duration, Timer};
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use esp_backtrace as _;
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use esp_hal::{
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i2c::master::{Config, I2c},
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prelude::*,
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timer::timg::TimerGroup,
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};
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#[esp_hal_embassy::main]
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async fn main(_spawner: Spawner) {
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let peripherals = esp_hal::init(esp_hal::Config::default());
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let timg0 = TimerGroup::new(peripherals.TIMG0);
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esp_hal_embassy::init(timg0.timer0);
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let mut i2c = I2c::new(peripherals.I2C0, {
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let mut config = Config::default();
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config.frequency = 400.kHz();
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config
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})
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.with_sda(peripherals.GPIO4)
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.with_scl(peripherals.GPIO5)
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.into_async();
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loop {
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let mut data = [0u8; 22];
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i2c.write_read(0x77, &[0xaa], &mut data).await.unwrap();
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esp_println::println!("direct: {:02x?}", data);
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read_data(&mut i2c).await;
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Timer::after(Duration::from_millis(1000)).await;
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}
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}
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async fn read_data<I2C>(i2c: &mut I2C)
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where
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I2C: embedded_hal_async::i2c::I2c,
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{
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let mut data = [0u8; 22];
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i2c.write_read(0x77, &[0xaa], &mut data).await.unwrap();
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esp_println::println!("embedded_hal: {:02x?}", data);
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}
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