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Add ADC example for STM32F411 (#952)
* Add ADC example for STM32F411 * Update dependencies * Update RTIC version * example: f411-adc: prefer text over picture * example: f411-adc: nit: typo --------- Co-authored-by: Milton Eduardo Sosa <milton@Miltons-MacBook-Pro.local> Co-authored-by: Henrik Tjäder <henrik@tjaders.com>
This commit is contained in:
Milton Eduardo Sosa
GitHub
parent
861a63dbe3
commit
35891f4559
7 changed files with 959 additions and 0 deletions
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examples/stm32f411_adc/.cargo/config.toml
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examples/stm32f411_adc/.cargo/config.toml
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@ -0,0 +1,14 @@
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[target.thumbv7em-none-eabihf]
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runner = "probe-rs run --chip STM32F411CEUx"
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rustflags = [
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"-C", "link-arg=-Tlink.x",
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"-C", "link-arg=-Tdefmt.x",
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[build]
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target = "thumbv7em-none-eabihf"
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[env]
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DEFMT_LOG = "debug"
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684
examples/stm32f411_adc/Cargo.lock
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examples/stm32f411_adc/Cargo.lock
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@ -0,0 +1,684 @@
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||||
[[package]]
|
||||
name = "proc-macro-error"
|
||||
version = "1.0.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
|
||||
dependencies = [
|
||||
"proc-macro-error-attr",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 1.0.109",
|
||||
"version_check",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "proc-macro-error-attr"
|
||||
version = "1.0.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"version_check",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "proc-macro2"
|
||||
version = "1.0.86"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5e719e8df665df0d1c8fbfd238015744736151d4445ec0836b8e628aae103b77"
|
||||
dependencies = [
|
||||
"unicode-ident",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "quote"
|
||||
version = "1.0.36"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0fa76aaf39101c457836aec0ce2316dbdc3ab723cdda1c6bd4e6ad4208acaca7"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rand_core"
|
||||
version = "0.6.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
|
||||
|
||||
[[package]]
|
||||
name = "rtic"
|
||||
version = "2.1.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c443db16326376bdd64377da268f6616d5f804aba8ce799bac7d1f7f244e9d51"
|
||||
dependencies = [
|
||||
"atomic-polyfill",
|
||||
"bare-metal 1.0.0",
|
||||
"cortex-m",
|
||||
"critical-section",
|
||||
"rtic-core",
|
||||
"rtic-macros",
|
||||
"rtic-monotonics",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rtic-common"
|
||||
version = "1.0.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0786b50b81ef9d2a944a000f60405bb28bf30cd45da2d182f3fe636b2321f35c"
|
||||
dependencies = [
|
||||
"critical-section",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rtic-core"
|
||||
version = "1.0.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d9369355b04d06a3780ec0f51ea2d225624db777acbc60abd8ca4832da5c1a42"
|
||||
|
||||
[[package]]
|
||||
name = "rtic-macros"
|
||||
version = "2.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "54053598ea24b1b74937724e366558412a1777eb2680b91ef646db540982789a"
|
||||
dependencies = [
|
||||
"indexmap",
|
||||
"proc-macro-error",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 2.0.67",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rtic-monotonics"
|
||||
version = "1.5.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "058c2397dbd5bb4c5650a0e368c3920953e458805ff5097a0511b8147b3619d7"
|
||||
dependencies = [
|
||||
"atomic-polyfill",
|
||||
"cfg-if",
|
||||
"embedded-hal 1.0.0",
|
||||
"fugit",
|
||||
"rtic-time",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rtic-sync"
|
||||
version = "1.3.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "49b1200137ccb2bf272a1801fa6e27264535facd356cb2c1d5bc8e12aa211bad"
|
||||
dependencies = [
|
||||
"critical-section",
|
||||
"embedded-hal 1.0.0",
|
||||
"embedded-hal-async",
|
||||
"embedded-hal-bus",
|
||||
"heapless",
|
||||
"portable-atomic",
|
||||
"rtic-common",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rtic-time"
|
||||
version = "1.3.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "75b232e7aebc045cfea81cdd164bc2727a10aca9a4568d406d0a5661cdfd0f19"
|
||||
dependencies = [
|
||||
"critical-section",
|
||||
"futures-util",
|
||||
"rtic-common",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rustc_version"
|
||||
version = "0.2.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
|
||||
dependencies = [
|
||||
"semver",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "semver"
|
||||
version = "0.9.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
|
||||
dependencies = [
|
||||
"semver-parser",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "semver-parser"
|
||||
version = "0.7.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
|
||||
|
||||
[[package]]
|
||||
name = "stable_deref_trait"
|
||||
version = "1.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
|
||||
|
||||
[[package]]
|
||||
name = "stm32f4"
|
||||
version = "0.15.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "fb94729242cd1aebe6dab42a2ca0131985ae93bc3ab2751b680df724bb35528d"
|
||||
dependencies = [
|
||||
"bare-metal 1.0.0",
|
||||
"cortex-m",
|
||||
"cortex-m-rt",
|
||||
"vcell",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "stm32f411_adc"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"cortex-m",
|
||||
"cortex-m-rt",
|
||||
"defmt",
|
||||
"defmt-rtt",
|
||||
"embedded-hal 1.0.0",
|
||||
"panic-halt",
|
||||
"rtic",
|
||||
"rtic-sync",
|
||||
"stm32f4xx-hal",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "stm32f4xx-hal"
|
||||
version = "0.21.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ceed60591531f4da636d828701c74861a3d100e5c4e36677cadbd2eb6f46eb67"
|
||||
dependencies = [
|
||||
"bare-metal 1.0.0",
|
||||
"cortex-m",
|
||||
"cortex-m-rt",
|
||||
"document-features",
|
||||
"embedded-dma",
|
||||
"embedded-hal 0.2.7",
|
||||
"embedded-hal 1.0.0",
|
||||
"embedded-hal-nb",
|
||||
"embedded-storage",
|
||||
"enumflags2",
|
||||
"fugit",
|
||||
"fugit-timer",
|
||||
"nb 1.1.0",
|
||||
"rand_core",
|
||||
"stm32f4",
|
||||
"time",
|
||||
"vcell",
|
||||
"void",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "syn"
|
||||
version = "1.0.109"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"unicode-ident",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "syn"
|
||||
version = "2.0.67"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ff8655ed1d86f3af4ee3fd3263786bc14245ad17c4c7e85ba7187fb3ae028c90"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"unicode-ident",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "thiserror"
|
||||
version = "1.0.61"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c546c80d6be4bc6a00c0f01730c08df82eaa7a7a61f11d656526506112cc1709"
|
||||
dependencies = [
|
||||
"thiserror-impl",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "thiserror-impl"
|
||||
version = "1.0.61"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "46c3384250002a6d5af4d114f2845d37b57521033f30d5c3f46c4d70e1197533"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn 2.0.67",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "time"
|
||||
version = "0.3.36"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5dfd88e563464686c916c7e46e623e520ddc6d79fa6641390f2e3fa86e83e885"
|
||||
dependencies = [
|
||||
"deranged",
|
||||
"num-conv",
|
||||
"powerfmt",
|
||||
"time-core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "time-core"
|
||||
version = "0.1.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ef927ca75afb808a4d64dd374f00a2adf8d0fcff8e7b184af886c3c87ec4a3f3"
|
||||
|
||||
[[package]]
|
||||
name = "unicode-ident"
|
||||
version = "1.0.12"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
|
||||
|
||||
[[package]]
|
||||
name = "vcell"
|
||||
version = "0.1.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "77439c1b53d2303b20d9459b1ade71a83c716e3f9c34f3228c00e6f185d6c002"
|
||||
|
||||
[[package]]
|
||||
name = "version_check"
|
||||
version = "0.9.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
|
||||
|
||||
[[package]]
|
||||
name = "void"
|
||||
version = "1.0.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
|
||||
|
||||
[[package]]
|
||||
name = "volatile-register"
|
||||
version = "0.2.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "de437e2a6208b014ab52972a27e59b33fa2920d3e00fe05026167a1c509d19cc"
|
||||
dependencies = [
|
||||
"vcell",
|
||||
]
|
||||
29
examples/stm32f411_adc/Cargo.toml
Normal file
29
examples/stm32f411_adc/Cargo.toml
Normal file
|
|
@ -0,0 +1,29 @@
|
|||
[workspace]
|
||||
|
||||
[package]
|
||||
authors = ["<Milton Sosa <milton.eduardo.sosa@gmail.com>"]
|
||||
edition = "2018"
|
||||
readme = "README.md"
|
||||
name = "stm32f411_adc"
|
||||
version = "0.1.0"
|
||||
|
||||
[dependencies]
|
||||
cortex-m = { version = "0.7.6", features = ["critical-section-single-core"] }
|
||||
cortex-m-rt = "0.7.1"
|
||||
rtic = {version = "2.1.1", features=["thumbv7-backend", "rtic-monotonics"]}
|
||||
panic-halt = "0.2.0"
|
||||
embedded-hal = "1.0.0"
|
||||
defmt = "0.3.5"
|
||||
defmt-rtt = { version = "0.4.0"}
|
||||
rtic-sync = "1.0.2"
|
||||
|
||||
[dependencies.stm32f4xx-hal]
|
||||
version = "0.21.0"
|
||||
features = ["stm32f411"] # replace the model of your microcontroller here
|
||||
|
||||
# this lets you use `cargo fix`!
|
||||
[[bin]]
|
||||
name = "stm32f411_adc"
|
||||
test = false
|
||||
bench = false
|
||||
|
||||
36
examples/stm32f411_adc/README.md
Normal file
36
examples/stm32f411_adc/README.md
Normal file
|
|
@ -0,0 +1,36 @@
|
|||
# STM32F411CEU6 ADC example
|
||||
Working example to work with the internal ADC of the STM32F411CEU6 present on a Blackpill board.
|
||||
|
||||
The `#init` task configures the ADC module for single-shot conversion and `PA1` as analog pin.
|
||||
|
||||
Afterwards, the analog pin stored in a Potentiometer struct is set as a **local** resource to the hardware task associated to `EXTI0`.
|
||||
|
||||
The `Adc<ADC1>` instance on the other hand, is set as a **shared** resource. The reason behind this approach is to allow other tasks make use of the only ADC module present on this microcontroller.
|
||||
|
||||
|
||||
|
||||
## How-to
|
||||
|
||||
### Build
|
||||
Run `cargo build --release` to compile the code. If you run it for the first time, it will take some time to download and compile dependencies.
|
||||
|
||||
### Run
|
||||
Install `probe-rs` and configure it using the [debugging extension for VScode](https://probe.rs/docs/tools/debugger/).
|
||||
The output should look like this:
|
||||
|
||||
```
|
||||
INFO Current delay value 1900
|
||||
INFO Current ADC value 665
|
||||
|
||||
INFO Current delay value 1800
|
||||
INFO Current ADC value 1138
|
||||
|
||||
INFO Current delay value 1700
|
||||
INFO Current ADC value 1136
|
||||
|
||||
INFO Current delay value 1600
|
||||
INFO Current ADC value 811
|
||||
|
||||
INFO Current delay value 1500
|
||||
INFO Current ADC value 1752
|
||||
```
|
||||
31
examples/stm32f411_adc/build.rs
Normal file
31
examples/stm32f411_adc/build.rs
Normal file
|
|
@ -0,0 +1,31 @@
|
|||
//! This build script copies the `memory.x` file from the crate root into
|
||||
//! a directory where the linker can always find it at build time.
|
||||
//! For many projects this is optional, as the linker always searches the
|
||||
//! project root directory -- wherever `Cargo.toml` is. However, if you
|
||||
//! are using a workspace or have a more complicated build setup, this
|
||||
//! build script becomes required. Additionally, by requesting that
|
||||
//! Cargo re-run the build script whenever `memory.x` is changed,
|
||||
//! updating `memory.x` ensures a rebuild of the application with the
|
||||
//! new memory settings.
|
||||
|
||||
use std::env;
|
||||
use std::fs::File;
|
||||
use std::io::Write;
|
||||
use std::path::PathBuf;
|
||||
|
||||
fn main() {
|
||||
// Put `memory.x` in our output directory and ensure it's
|
||||
// on the linker search path.
|
||||
let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
|
||||
File::create(out.join("memory.x"))
|
||||
.unwrap()
|
||||
.write_all(include_bytes!("memory.x"))
|
||||
.unwrap();
|
||||
println!("cargo:rustc-link-search={}", out.display());
|
||||
|
||||
// By default, Cargo will re-run a build script whenever
|
||||
// any file in the project changes. By specifying `memory.x`
|
||||
// here, we ensure the build script is only re-run when
|
||||
// `memory.x` is changed.
|
||||
println!("cargo:rerun-if-changed=memory.x");
|
||||
}
|
||||
6
examples/stm32f411_adc/memory.x
Normal file
6
examples/stm32f411_adc/memory.x
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
MEMORY
|
||||
{
|
||||
/* NOTE 1 K = 1 KiBi = 1024 bytes */
|
||||
FLASH : ORIGIN = 0x08000000, LENGTH = 512K
|
||||
RAM : ORIGIN = 0x20000000, LENGTH = 96K
|
||||
}
|
||||
159
examples/stm32f411_adc/src/main.rs
Normal file
159
examples/stm32f411_adc/src/main.rs
Normal file
|
|
@ -0,0 +1,159 @@
|
|||
#![deny(unsafe_code)]
|
||||
#![deny(warnings)]
|
||||
#![no_main]
|
||||
#![no_std]
|
||||
|
||||
use panic_halt as _;
|
||||
|
||||
#[rtic::app(device = stm32f4xx_hal::pac, peripherals = true)]
|
||||
mod app {
|
||||
|
||||
use stm32f4xx_hal::pac::ADC1;
|
||||
use stm32f4xx_hal::{
|
||||
adc::{
|
||||
config::{AdcConfig, SampleTime},
|
||||
Adc,
|
||||
},
|
||||
gpio::{self, Analog, Edge, Input, Output, PushPull},
|
||||
pac::TIM1,
|
||||
prelude::*,
|
||||
timer,
|
||||
};
|
||||
|
||||
use defmt_rtt as _;
|
||||
|
||||
// A simple placeholder for the analog pin
|
||||
struct Potentiometer {
|
||||
analog_input: gpio::PA1<Analog>,
|
||||
}
|
||||
|
||||
// Resources shared between tasks
|
||||
#[shared]
|
||||
struct Shared {
|
||||
delayval: u32,
|
||||
adc_module: Adc<ADC1>,
|
||||
}
|
||||
|
||||
// Local resources to specific tasks (cannot be shared)
|
||||
#[local]
|
||||
struct Local {
|
||||
button: gpio::PA0<Input>,
|
||||
pot_instance: Potentiometer,
|
||||
led: gpio::PC13<Output<PushPull>>,
|
||||
delay: timer::DelayMs<TIM1>,
|
||||
}
|
||||
|
||||
#[init]
|
||||
fn init(ctx: init::Context) -> (Shared, Local) {
|
||||
let mut dp = ctx.device;
|
||||
|
||||
// Configure and obtain handle for delay abstraction
|
||||
// 1) Promote RCC structure to HAL to be able to configure clocks
|
||||
let rcc = dp.RCC.constrain();
|
||||
|
||||
// 2) Configure the system clocks
|
||||
// 25 MHz must be used for HSE on the Blackpill-STM32F411CE board according to manual
|
||||
let clocks = rcc.cfgr.use_hse(25.MHz()).freeze();
|
||||
|
||||
// 3) Create delay handle
|
||||
let delay = dp.TIM1.delay_ms(&clocks);
|
||||
|
||||
// Configure the LED pin as a push pull output and obtain handle
|
||||
// On the Blackpill STM32F411CEU6 there is an on-board LED connected to pin PC13
|
||||
// 1) Promote the GPIOC PAC struct
|
||||
let gpioc = dp.GPIOC.split();
|
||||
|
||||
// 2) Configure PORTC OUTPUT Pins and Obtain Handle
|
||||
let led = gpioc.pc13.into_push_pull_output();
|
||||
|
||||
// Configure the button pin as input and obtain handle
|
||||
// On the Blackpill STM32F411CEU6 there is a button connected to pin PA0
|
||||
// 3) Promote the GPIOA PAC struct
|
||||
let gpioa: gpio::gpioa::Parts = dp.GPIOA.split();
|
||||
// 4) Configure Pin and Obtain Handle
|
||||
let mut button = gpioa.pa0.into_pull_up_input();
|
||||
|
||||
// 5) Configure pin A1 of the blackpill to be of type analog
|
||||
// the input does not need to be mutable since we are only reading it.
|
||||
let analog_input = gpioa.pa1.into_analog();
|
||||
|
||||
// 6) Configure the ADC modulke for single-shot conversion
|
||||
let mut adc = Adc::adc1(dp.ADC1, true, AdcConfig::default());
|
||||
// Calibrate by calculates the system VDDA by sampling the internal VREF
|
||||
// channel and comparing the result with the value stored at the factory.
|
||||
adc.calibrate();
|
||||
|
||||
let pot_instance = Potentiometer {
|
||||
analog_input: analog_input,
|
||||
};
|
||||
|
||||
// Configure Button Pin for Interrupts
|
||||
// 7) Promote SYSCFG structure to HAL to be able to configure interrupts
|
||||
let mut syscfg = dp.SYSCFG.constrain();
|
||||
// 8) Make button an interrupt source
|
||||
button.make_interrupt_source(&mut syscfg);
|
||||
// 9) Configure the interruption to be triggered on a rising edge
|
||||
button.trigger_on_edge(&mut dp.EXTI, Edge::Rising);
|
||||
// 10) Enable gpio interrupt for button
|
||||
button.enable_interrupt(&mut dp.EXTI);
|
||||
|
||||
(
|
||||
// Initialization of shared resources. In this case delay value and the ADC instance
|
||||
Shared {
|
||||
delayval: 2000_u32,
|
||||
adc_module: adc,
|
||||
},
|
||||
// Initialization of task local resources
|
||||
Local {
|
||||
button,
|
||||
pot_instance,
|
||||
led,
|
||||
delay,
|
||||
},
|
||||
)
|
||||
}
|
||||
|
||||
// Background task, runs whenever no other tasks are running
|
||||
#[idle(local = [led, delay], shared = [delayval])]
|
||||
fn idle(mut ctx: idle::Context) -> ! {
|
||||
let led = ctx.local.led;
|
||||
let delay = ctx.local.delay;
|
||||
loop {
|
||||
// Turn On LED
|
||||
led.set_high();
|
||||
// Obtain shared delay variable and delay
|
||||
delay.delay_ms(ctx.shared.delayval.lock(|del| *del));
|
||||
// Turn off LED
|
||||
led.set_low();
|
||||
// Obtain shared delay variable and delay
|
||||
delay.delay_ms(ctx.shared.delayval.lock(|del| *del));
|
||||
}
|
||||
}
|
||||
|
||||
// Handle the IRQ generated when the button is pressed and interact with local and shared resources.
|
||||
#[task(binds = EXTI0, local = [button, pot_instance], shared=[delayval, adc_module])]
|
||||
fn gpio_interrupt_handler(mut ctx: gpio_interrupt_handler::Context) {
|
||||
ctx.shared.delayval.lock(|del| {
|
||||
*del = *del - 100_u32;
|
||||
if *del < 200_u32 {
|
||||
*del = 2000_u32;
|
||||
}
|
||||
*del
|
||||
});
|
||||
|
||||
ctx.shared.delayval.lock(|del| {
|
||||
defmt::info!("Current delay value {:?}", del);
|
||||
});
|
||||
|
||||
// Obtain the Potentiometer instance that belongs to this task ONLY
|
||||
let analog_input = &ctx.local.pot_instance.analog_input;
|
||||
|
||||
// Obtain the shared instance of Adc and do one conversion of the value seen
|
||||
ctx.shared.adc_module.lock(|adc_module| {
|
||||
let sample = adc_module.convert(analog_input, SampleTime::Cycles_480);
|
||||
defmt::info!("Current ADC value {:?}\n", sample);
|
||||
});
|
||||
|
||||
ctx.local.button.clear_interrupt_pending_bit();
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue