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authorchemicstry <[email protected]>2022-10-24 21:50:29 +0300
committerchemicstry <[email protected]>2022-10-24 21:50:29 +0300
commit9ad7e8528831cb88e77c0efcf98944fecfe88848 (patch)
tree21a302fe4bc3b57a253000b39139f62f6b46fdee /examples
parent9b209ffe1c9048f296213c7050919ccbcd7ded1b (diff)
parent1bed02296cf15013e0149b36c3ddedb3278e9b88 (diff)
Merge branch 'i2c_timeout2_v2' into i2c_timeout2
Diffstat (limited to 'examples')
-rw-r--r--examples/stm32h7/src/bin/i2c.rs41
1 files changed, 41 insertions, 0 deletions
diff --git a/examples/stm32h7/src/bin/i2c.rs b/examples/stm32h7/src/bin/i2c.rs
new file mode 100644
index 000000000..7a314b996
--- /dev/null
+++ b/examples/stm32h7/src/bin/i2c.rs
@@ -0,0 +1,41 @@
1#![no_std]
2#![no_main]
3#![feature(type_alias_impl_trait)]
4
5use defmt::*;
6use embassy_executor::Spawner;
7use embassy_stm32::i2c::{Error, I2c, TimeoutI2c};
8use embassy_stm32::interrupt;
9use embassy_stm32::time::Hertz;
10use embassy_time::Duration;
11use {defmt_rtt as _, panic_probe as _};
12
13const ADDRESS: u8 = 0x5F;
14const WHOAMI: u8 = 0x0F;
15
16#[embassy_executor::main]
17async fn main(_spawner: Spawner) -> ! {
18 info!("Hello world!");
19 let p = embassy_stm32::init(Default::default());
20
21 let irq = interrupt::take!(I2C2_EV);
22 let mut i2c = I2c::new(
23 p.I2C2,
24 p.PB10,
25 p.PB11,
26 irq,
27 p.DMA1_CH4,
28 p.DMA1_CH5,
29 Hertz(100_000),
30 Default::default(),
31 );
32 let mut timeout_i2c = TimeoutI2c::new(&mut i2c, Duration::from_millis(1000));
33
34 let mut data = [0u8; 1];
35
36 match timeout_i2c.blocking_write_read(ADDRESS, &[WHOAMI], &mut data) {
37 Ok(()) => info!("Whoami: {}", data[0]),
38 Err(Error::Timeout) => error!("Operation timed out"),
39 Err(e) => error!("I2c Error: {:?}", e),
40 }
41}