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Commit 11649795 authored by Tim Docker's avatar Tim Docker
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Added an minimal example for cortex-m-rtfm

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minimal-rtfm/.cargo/config 0 → 100644
+ 10
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View file @ 11649795
[target.thumbv7em-none-eabi]
runner = 'arm-none-eabi-gdb'
rustflags = [
# "-C", "linker=arm-none-eabi-gcc",
# "-C", "link-arg=-Wl,-Tlink.x",
# "-C", "link-arg=-nostartfiles"
"-C", "link-arg=-Tlink.x"
]
[build]
target = "thumbv7em-none-eabi"
minimal-rtfm/.gdbinit 0 → 100644
+ 21
− 0
View file @ 11649795
target remote :3333
# print demangled symbols by default
set print asm-demangle on
monitor arm semihosting enable
# # send captured ITM to the file itm.fifo
# # (the microcontroller SWO pin must be connected to the programmer SWO pin)
# # 8000000 must match the core clock frequency
# monitor tpiu config internal itm.fifo uart off 8000000
# # OR: make the microcontroller SWO pin output compatible with UART (8N1)
# # 2000000 is the frequency of the SWO pin
# monitor tpiu config external uart off 8000000 2000000
# # enable ITM port 0
# monitor itm port 0 on
load
step
minimal-rtfm/Cargo.lock 0 → 100644
+ 357
− 0
View file @ 11649795
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minimal-rtfm/Cargo.toml 0 → 100644
+ 44
− 0
View file @ 11649795
# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
#
# When uploading crates to the registry Cargo will automatically
# "normalize" Cargo.toml files for maximal compatibility
# with all versions of Cargo and also rewrite `path` dependencies
# to registry (e.g. crates.io) dependencies
#
# If you believe there's an error in this file please file an
# issue against the rust-lang/cargo repository. If you're
# editing this file be aware that the upstream Cargo.toml
# will likely look very different (and much more reasonable)
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authors = ["Tim Docker<tim@dockerz.net>"]
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categories = ["embedded", "no-std"]
license = "MIT OR Apache-2.0"
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default-features = false
[dependencies.stm32f4]
version = "0.2.3"
features = ["stm32f407", "rt"]
[dependencies.cortex-m]
version = "0.5.6"
[dependencies.cortex-m-rt]
version = "0.5.1"
[dependencies.cortex-m-semihosting]
version = "0.3.1"
[dependencies.panic-semihosting]
version = "0.3.0"
minimal-rtfm/build.rs 0 → 100644
+ 18
− 0
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use std::env;
use std::fs::File;
use std::io::Write;
use std::path::PathBuf;
fn main() {
// Put the linker script somewhere the linker can find it
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());
// Only re-run the build script when memory.x is changed,
// instead of when any part of the source code changes.
println!("cargo:rerun-if-changed=memory.x");
}
minimal-rtfm/memory.x 0 → 100644
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− 0
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MEMORY
{
/* NOTE K = KiBi = 1024 bytes */
FLASH : ORIGIN = 0x08000000, LENGTH = 256K
RAM : ORIGIN = 0x20000000, LENGTH = 40K
}
/* This is where the call stack will be allocated. */
/* The stack is of the full descending type. */
/* You may want to use this variable to locate the call stack and static
variables in different memory regions. Below is shown the default value */
/* _stack_start = ORIGIN(RAM) + LENGTH(RAM); */
/* You can use this symbol to customize the location of the .text section */
/* If omitted the .text section will be placed right after the .vector_table
section */
/* This is required only on microcontrollers that store some configuration right
after the vector table */
/* _stext = ORIGIN(FLASH) + 0x400; */
/* Size of the heap (in bytes) */
/* _heap_size = 1024; */
minimal-rtfm/src/main.rs 0 → 100644
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− 0
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//! Minimal example with zero tasks
#![deny(unsafe_code)]
#![deny(warnings)]
#![no_main]
#![no_std]
extern crate cortex_m_rtfm as rtfm; // IMPORTANT always do this rename
extern crate stm32f4;
extern crate panic_semihosting;
// import the procedural macro
use rtfm::app;
use stm32f4::stm32f407;
// This macro call indicates that this is a RTFM application
//
// This macro will expand to a `main` function so you don't need to supply
// `main` yourself.
app! {
// this is the path to the device crate
device: stm32f407,
}
// The initialization phase.
//
// This runs first and within a *global* critical section. Nothing can preempt
// this function.
fn init(p: init::Peripherals) {
// This function has access to all the peripherals of the device
p.core.SYST;
p.device.GPIOA;
p.device.RCC;
// ..
}
// The idle loop.
//
// This runs after `init` and has a priority of 0. All tasks can preempt this
// function. This function can never return so it must contain some sort of
// endless loop.
fn idle() -> ! {
loop {
// This puts the processor to sleep until there's a task to service
rtfm::wfi();
}
}
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