jamesmunns

Q&A session 2020-04-01

Misc notes:

    HAL - Hardware Abstraction Layer
^ Written by humans

Lowest: PAC - Peripheral Access Crate ^ Generated by svd2rust Register interface

jamesmunns

james@archx1c6g ➜  spsc-bip-buffer git:(master) cargo +master run --release --example perf --features nightly_perf_example -- 0 2 255 16384 100000 true
    Finished release [optimized] target(s) in 0.01s
     Running `/tmp/.cargo-build-cache/release/examples/perf 0 2 255 16384 100000 true`
sender done
receiver done
elapsed (nanos)	bytes	msgs	bytes/s	msgs/s
2363048796	3264000000	12800000	1381266440.8475463	5416731.140578614
reserve and send:
╭   6.200000e1    8.400000e1    9.200000e1    1.120000e2    1.600000e2    2.080000e2    2.949120e5  ╮
╰ [    0.25          0.5           0.75     ]--- 0.95  ------- 0.99  ------- 0.999 -------| max     ╯

jamesmunns

git clone https://github.com/jamesmunns/bbqueue
cd bbqueue
james@archx1c6g ➜  bbqueue git:(miri-testing) git checkout miri-testing
Already on 'miri-testing'
james@archx1c6g ➜  bbqueue git:(miri-testing) cd bbqtest
james@archx1c6g ➜  bbqtest git:(miri-testing) cargo +master miri test --features travisci
   Compiling bbqtest v0.1.0 (/home/james/stream2/bbqueue/bbqtest)
warning: unused import: `consts::*`
 --> bbqtest/src/lib.rs:9:90
  |

jamesmunns

FRAUTH-CONTENTS
name = "James Munns"
note = "Hello, I'm James!"
pubkey = "💥💿🍞🔫☕️👽🔍👶🐣👉🏃💫⚓️👑🐸🍏🐾🐊🍎🎺💯💻💦🍸🐒👑🍼⚓️💔🏆🎬⛔️"

[identities]
email = "james.munns@ferrous-systems.com"
github = "https://github.com/jamesmunns"
twitter = "https://twitter.com/bitshiftmask"

jamesmunns

james@archx1c6g ➜  write-test git:(master) ✗ cat ./src/main.rs
use std::io::Write;

fn main() {
    for _ in 0..10 {
        writeln!(
            ::std::io::stdout().lock(),
            "Hello, world!"
        ).unwrap_or_else(|_| {
            eprintln!("stderr: Hello, stderr!");

jamesmunns

arm-none-eabi-nm -nC ./target/thumbv7em-none-eabihf/release/alarm-clock

00000004 R __RESET_VECTOR
00000008 R __EXCEPTIONS
00000008 R __reset_vector
00000040 R __eexceptions
00000040 R __INTERRUPTS
000000dc R _stext
000000dc t <&T as core::fmt::Debug>::fmt
00000154 t <&T as core::fmt::Debug>::fmt

jamesmunns

emb_index = {
    "num-traits",
    "ws2_32-sys",
    "rand_jitter",
    "compiler_builtins",
    "num-bigint",
    "miniz-sys",
    "extprim",
    "simple-hex",
    "encoding-index-simpchinese",

jamesmunns

==> 001-master-opt-3.txt <==
   text	   data	    bss	    dec	    hex	filename
   2580	      0	      4	   2584	    a18	/home/james/nrf-rs/nrf52-hal/target/thumbv7em-none-eabihf/release/spi-demo

==> 001-master-opt-s.txt <==
   text	   data	    bss	    dec	    hex	filename
   1472	      0	      4	   1476	    5c4	/home/james/nrf-rs/nrf52-hal/target/thumbv7em-none-eabihf/release/spi-demo

==> 001-master-opt-z.txt <==
   text	   data	    bss	    dec	    hex	filename

jamesmunns

==> 001-unmodified.txt <==
   text	   data	    bss	    dec	    hex	filename
 232048	      0	     16	 232064	  38a80	target/thumbv7em-none-eabihf/debug/examples/dw1000_rx_tx
  32358	      0	     16	  32374	   7e76	target/thumbv7em-none-eabihf/release/examples/dw1000_rx_tx

==> 002-master-c2ddfd3.txt <==
   text	   data	    bss	    dec	    hex	filename
 233144	      0	     16	 233160	  38ec8	target/thumbv7em-none-eabihf/debug/examples/dw1000_rx_tx
  32358	      0	     16	  32374	   7e76	target/thumbv7em-none-eabihf/release/examples/dw1000_rx_tx

jamesmunns

CMIM - Cortex-M Interrupt Move

Stage 1 - Moving data to interrupts

use nrf52832_pac::Interrupt;
use something::Queue;

// Done at global scope, only specify types
cmim!(