Build succeeded:

• dummy

@ianrrees I also found the same thing

Thanks for opening this issue, @smklein. A new release is definitely overdue. I've added it to my task list. Hopefully I'll get to it some time this week.

Updates the requirements on cortex-m to permit the latest version. <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/rust-embedded/cortex-m/blob/master/CHANGELOG.md">cortex-m's changelog</a>.</em></p> <blockquote> <h2>[v0.6.4] - 2020-10-26</h2> <h3>Changed</h3> <ul> <li>MSRV bumped to 1.36.0 due to <code>aligned</code> dependency.</li> </ul> <h3>Fixed</h3> <ul> <li>Drop AT&T syntax from inline asm, which was causing miscompilations with newer versions of the compiler.</li> </ul> <h2>[v0.6.3] - 2020-07-20</h2> <h3>Added</h3> <ul> <li>Initial Cortex-M Security Extension support for armv8m</li> <li><code>UDF</code> intrinsic</li> <li>Methods to enable/disable exceptions in SCB</li> </ul> <h3>Fixed</h3> <ul> <li>Fix bug in <code>asm::delay</code> not updating status clobber flags</li> <li>Swapped to <code>llvm_asm!</code> to support inline assembly on new nightlies</li> <li>Our precompiled assembly routines have additional debug information</li> <li>ITM <code>is_fifo_ready</code> improved to support armv8</li> <li>Cache enabling moved to pre-built assembly routines to prevent possible undefined behaviour</li> </ul> <h2>[v0.6.2] - 2020-01-12</h2> <h3>Added</h3> <ul> <li>Allow writing to the <code>CONTROL</code> register via <code>register::control::write</code></li> <li>Add <code>DWT::unlock()</code> for a safe way to unlock the DWT</li> </ul> <h3>Deprecation</h3> <ul> <li>Deprecated incorrectly included registers (<code>BASPRI</code>, <code>BASEPRI_MAX</code>, <code>FAULTMASK</code>) on <code>thumbv8.base</code></li> </ul> <h2>[v0.6.1] - 2019-08-21</h2> <h3>Fixed</h3> <ul> <li>Better <code>Debug</code>, <code>PartialEq</code> and <code>Eq</code> for more types</li> <li>The <code>delay</code> function is fixed for Cortex-M0 MCUs</li> </ul> <h3>Added</h3> <ul> <li>Static version of <code>system_reset</code> as <code>system_reset2</code></li> <li>Now uses <code>links = "cortex-m"</code> to not link multiple versions of the crate</li> <li>Masking of the NVIC is added <code>NVIC::{mask,unmask}</code></li> </ul> <!-- raw HTML omitted --> </blockquote> </details> <details> <summary>Commits</summary> <ul> <li>See full diff in <a href="https://github.com/rust-embedded/cortex-m/commits">compare view</a></li> </ul> </details> <br />

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Superseded by #37.

Updates the requirements on cortex-m to permit the latest version. <details> <summary>Release notes</summary> <p><em>Sourced from <a href="https://github.com/rust-embedded/cortex-m/releases">cortex-m's releases</a>.</em></p> <blockquote> <h2>v0.7.1</h2> <h3>Added</h3> <ul> <li>New assembly methods <code>asm::semihosting_syscall</code>, <code>asm::bootstrap</code>, and <code>asm::bootload</code>.</li> </ul> <h3>Deprecated</h3> <ul> <li><code>msp::write</code> has been deprecated in favor of <code>asm::bootstrap</code>. It was not possible to use <code>msp::write</code> without causing Undefined Behavior, so all existing users are encouraged to migrate.</li> </ul> <h3>Fixed</h3> <ul> <li>Fixed a bug in <code>asm::delay</code> which could lead to incorrect codegen and infinite loops.</li> <li>Improved timing guarantees of <code>asm::delay</code> on multiple-issue CPU cores.</li> <li>Additional compiler fences added to inline assembly where necessary.</li> <li>Fixed DWARF debug information in pre-built assembly binaries.</li> </ul> </blockquote> </details> <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/rust-embedded/cortex-m/blob/master/CHANGELOG.md">cortex-m's changelog</a>.</em></p> <blockquote> <h2>[v0.7.1] - 2021-01-25</h2> <h3>Added</h3> <ul> <li>New assembly methods <code>asm::semihosting_syscall</code>, <code>asm::bootstrap</code>, and <code>asm::bootload</code>.</li> </ul> <h3>Deprecated</h3> <ul> <li><code>msp::write</code> has been deprecated in favor of <code>asm::bootstrap</code>. It was not possible to use <code>msp::write</code> without causing Undefined Behavior, so all existing users are encouraged to migrate.</li> </ul> <h3>Fixed</h3> <ul> <li>Fixed a bug in <code>asm::delay</code> which could lead to incorrect codegen and infinite loops.</li> <li>Improved timing guarantees of <code>asm::delay</code> on multiple-issue CPU cores.</li> <li>Additional compiler fences added to inline assembly where necessary.</li> <li>Fixed DWARF debug information in pre-built assembly binaries.</li> </ul> <h2>[v0.7.0] - 2020-11-09</h2> <h3>Added</h3> <ul> <li>New <code>InterruptNumber</code> trait is now required on interrupt arguments to the various NVIC functions, replacing the previous use of <code>Nr</code> from bare-metal. For backwards compatibility, <code>InterruptNumber</code> is implemented for types which are <code>Nr + Copy</code>, but this will be removed in a future version.</li> <li>Associated const <code>PTR</code> is introduced to Core Peripherals to eventually replace the existing <code>ptr()</code> API.</li> <li>A delay driver based on SysTick.</li> <li>You can now use LTO to inline assembly calls, even on stable Rust. See the <code>asm/lib.rs</code> documentation for more details.</li> <li>Initial ARMv8-M MPU support</li> <li>ICTR and ACTLR registers added</li> <li>Support for the Security Attribution Unit on ARMv8-M</li> </ul> <h3>Changed</h3> <ul> <li>Previously, asm calls without the <code>inline-asm</code> feature enabled used pre-built objects which were built by a GCC compiler, while <code>inline-asm</code> enabled the use of <code>llvm_asm!</code> calls. The asm system has been replaced with a new technique which generates Rust static libs for stable calling, and uses the new <code>asm!</code> macro with <code>inline-asm</code>. See the <code>asm/lib.rs</code> documentation for more details.</li> <li>Cache enabling now uses an assembly sequence to ensure correctness.</li> <li><code>ptr()</code> methods are now <code>const</code>.</li> </ul> <h3>Breaking Changes</h3> <!-- raw HTML omitted --> </blockquote> <p>... (truncated)</p> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/rust-embedded/cortex-m/commit/ad7e01b4139db7bdc62d1bb5445da3d7587c7812"><code>ad7e01b</code></a> Merge <a href="https://github-redirect.dependabot.com/rust-embedded/cortex-m/issues/320">#320</a></li> <li><a href="https://github.com/rust-embedded/cortex-m/commit/4b7764a1b2bdaa25ee4994e786af704fe21fa0f3"><code>4b7764a</code></a> Prepare for v0.7.1</li> <li><a href="https://github.com/rust-embedded/cortex-m/commit/465f303bd1453693c76f098ef0454fb769e25258"><code>465f303</code></a> Merge <a href="https://github-redirect.dependabot.com/rust-embedded/cortex-m/issues/319">#319</a></li> <li><a href="https://github.com/rust-embedded/cortex-m/commit/7777775b7eb6f03eaaf98f3af8e1daf1c643322e"><code>7777775</code></a> CHANGELOG updates</li> <li><a href="https://github.com/rust-embedded/cortex-m/commit/2082aca42ab291981ab8c0c692d1e1d0e6d444b8"><code>2082aca</code></a> Merge <a href="https://github-redirect.dependabot.com/rust-embedded/cortex-m/issues/318">#318</a></li> <li><a href="https://github.com/rust-embedded/cortex-m/commit/4c624da754c831cf8c17859f253e81ee4ed29c9b"><code>4c624da</code></a> Use LTO instead of removing the panic handler manually. Closes <a href="https://github-redirect.dependabot.com/rust-embedded/cortex-m/issues/309">#309</a></li> <li><a href="https://github.com/rust-embedded/cortex-m/commit/6d75b144dcc2bf6c1bd324b38e826bc4380628e1"><code>6d75b14</code></a> Merge <a href="https://github-redirect.dependabot.com/rust-embedded/cortex-m/issues/317">#317</a></li> <li><a href="https://github.com/rust-embedded/cortex-m/commit/8b6c269f3b8d4133ef7c6d41496e88621d02c9e4"><code>8b6c269</code></a> Fix __delay clobber</li> <li><a href="https://github.com/rust-embedded/cortex-m/commit/d4cbf0755f7f2c70b0510fd52ff98584e8679c1f"><code>d4cbf07</code></a> Merge <a href="https://github-redirect.dependabot.com/rust-embedded/cortex-m/issues/313">#313</a></li> <li><a href="https://github.com/rust-embedded/cortex-m/commit/c828dd95e8e15be90ecdaa15193bb73ece781536"><code>c828dd9</code></a> Remove excessive missing_inline_in_public_items</li> <li>Additional commits viewable in <a href="https://github.com/rust-embedded/cortex-m/compare/v0.6.1...v0.7.1">compare view</a></li> </ul> </details> <br />

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Ahhh that's what I was missing, thanks it seems to be working now. (Y)

You need a Cargo configuration file like this: https://github.com/nrf-rs/nrf-hal/blob/master/.cargo/config

Hi @jonas-schievink,

Sorry I'm quit the noob with regards to rust, I guess my error message indicates the link script can't be found.

Checking your link and comparing with the example code in this repo the only path that I see needs changing is nrf52840-hal = { features = ["rt"], path = "../../nrf52840-hal" } in Cargo.toml, is there some additional configuration which I'm missing? I'm building using cargo embed --target thumbv7em-none-eabihf.

I'm struggling to see why moving the example code up a folder would break flashing.

When copy pasting the example code outside of the source tree and correclty changing the nrf-hal path, embed does not flash the target binary correctly to the device:

        WARN probe_rs::flashing::download > No loadable segments were found in the ELF file.
     Erasing sectors ⠁ [00:00:00] [#######################################################################]       0B/      0B @       0B/s (eta 0s )
       Error failed to flash /home/mattia/experiments/nrf-rust-workspace/qdec-demo/target/thumbv7em-none-eabihf/debug/qdec-demo
             
             Caused by:
                 No loadable ELF sections were found.

Cargo.toml:

"../nrf-hal/nrf52840-hal"

Workspace:

./nrf-hal
./qdec-demo

Doing the same for the in-tree samples works fine somehow.

Please refer to the directory layout in https://github.com/rust-embedded/cortex-m-quickstart, you need to configure Cargo correctly before targeting Cortex-M devices will work

When copy pasting the example code outside of the source tree and correclty changing the nrf-hal path, embed does not flash the target binary correctly to the device:

       Error failed to flash /home/mattia/experiments/nrf-rust-workspace/qdec-demo/target/thumbv7em-none-eabihf/debug/qdec-demo
             
             Caused by:
                 No loadable ELF sections were found.

Cargo.toml:

"../nrf-hal/nrf52840-hal"

Workspace:

./nrf-hal
./qdec-demo

After getting set up with this crate - downloading the most recent version published to crates.io (0.4.0), I got an application set up, and tried to copy the "blinky" LED example as a basic check that things worked.

Unfortunately, the compiler complained - even the simple rust blinky example broke, because of a version mismatch: the version on crates.io still depends on nrf52832-hal version 0.8.1, even though that's been fixed on master to point to a more recent revision.

Would it be possible to publish a version 0.5.0 of this crate? That would make the crates.io documentation stay in sync with the repo. I've also seen folks using git tags to identify "which revision of the source code + examples are consistent with what can be downloaded from crates.io"

I was approached by @ryankurte about joining the embedded linux team and I would be happy to. So far I have contributed to rust-i2cdev and linux-embedded-hal adding support for transactional I2C among other smaller fixes. See:

• https://github.com/rust-embedded/rust-i2cdev/pull/51
• https://github.com/rust-embedded/linux-embedded-hal/pull/26

Other than that I guess everyone here knows me already. Nevertheless, please feel free to raise any concerns.