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.cargo/config.toml

··· 1 1 + [target.'cfg(all(target_arch = "arm", target_os = "none"))'] 2 2 + # runner = "probe-rs run --chip RP2040" # for jtag 3 3 + runner = "elf2uf2-rs --deploy --serial --verbose" # for elf2uf2 4 4 + 5 5 + [build] 6 6 + target = "thumbv6m-none-eabi" # Cortex-M0 and Cortex-M0+ 7 7 + 8 8 + [env] 9 9 + DEFMT_LOG = "debug"

+1

.gitignore

··· 1 1 + /target

+4

.vscode/.gitignore

··· 1 1 + *.cortex-debug.*.json 2 2 + launch.json 3 3 + tasks.json 4 4 + *.cfg

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.vscode/extensions.json

··· 1 1 + { 2 2 + // See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations. 3 3 + // Extension identifier format: ${publisher}.${name}. Example: vscode.csharp 4 4 + // List of extensions which should be recommended for users of this workspace. 5 5 + "recommendations": [ 6 6 + "rust-lang.rust-analyzer", 7 7 + "tamasfe.even-better-toml", 8 8 + ], 9 9 + // List of extensions recommended by VS Code that should not be recommended for users of this workspace. 10 10 + "unwantedRecommendations": [] 11 11 + }

+18

.vscode/settings.json

··· 1 1 + { 2 2 + "editor.formatOnSave": true, 3 3 + "[toml]": { 4 4 + "editor.formatOnSave": false 5 5 + }, 6 6 + "[markdown]": { 7 7 + "editor.formatOnSave": false 8 8 + }, 9 9 + "rust-analyzer.check.allTargets": false, 10 10 + "rust-analyzer.check.noDefaultFeatures": true, 11 11 + "rust-analyzer.cargo.noDefaultFeatures": true, 12 12 + "rust-analyzer.showUnlinkedFileNotification": false, 13 13 + // uncomment the target of your chip. 14 14 + "rust-analyzer.cargo.target": "thumbv6m-none-eabi", 15 15 + //"rust-analyzer.cargo.target": "thumbv7m-none-eabi", 16 16 + //"rust-analyzer.cargo.target": "thumbv7em-none-eabi", 17 17 + //"rust-analyzer.cargo.target": "thumbv8m.main-none-eabihf", 18 18 + }

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+76

Cargo.toml

··· 1 1 + [package] 2 2 + edition = "2024" 3 3 + rust-version = "1.85.0" 4 4 + name = "macropad" 5 5 + version = "0.1.0" 6 6 + authors = ["Eric Wood <eric@ericwood.org>"] 7 7 + resolver = "2" 8 8 + 9 9 + [dependencies] 10 10 + embassy-embedded-hal = { version = "0.5.0", features = ["defmt"] } 11 11 + embassy-sync = { version = "0.7.2", features = ["defmt"] } 12 12 + embassy-executor = { version = "0.9.1", features = [ 13 13 + "arch-cortex-m", 14 14 + "executor-thread", 15 15 + "executor-interrupt", 16 16 + "defmt", 17 17 + ] } 18 18 + embassy-time = { version = "0.5.0", features = [ 19 19 + "defmt", 20 20 + "defmt-timestamp-uptime", 21 21 + ] } 22 22 + embassy-rp = { version = "0.9.0", features = [ 23 23 + "defmt", 24 24 + "unstable-pac", 25 25 + "time-driver", 26 26 + "critical-section-impl", 27 27 + "rp2040", 28 28 + ] } 29 29 + embassy-futures = { version = "0.1.2" } 30 30 + embassy-usb = { version = "0.5.1", features = ["defmt"] } 31 31 + embassy-usb-logger = { version = "0.5.1" } 32 32 + usbd-hid = "0.9.0" 33 33 + 34 34 + defmt = "1.0.1" 35 35 + defmt-rtt = "1.1.0" 36 36 + fixed = "1.29.0" 37 37 + fixed-macro = "1.2.0" 38 38 + 39 39 + cortex-m = { version = "0.7.7", features = ["inline-asm"] } 40 40 + cortex-m-rt = "0.7.5" 41 41 + panic-probe = { version = "1.0.0", features = ["print-defmt"] } 42 42 + futures = { version = "0.3.31", default-features = false, features = [ 43 43 + "async-await", 44 44 + "cfg-target-has-atomic", 45 45 + "unstable", 46 46 + ] } 47 47 + heapless = "0.9.2" 48 48 + 49 49 + embedded-hal-1 = { package = "embedded-hal", version = "=1.0.0" } 50 50 + embedded-hal-async = "1.0.0" 51 51 + embedded-hal-bus = { version = "0.3.0", features = ["async"] } 52 52 + embedded-io-async = { version = "0.7.0", features = ["defmt"] } 53 53 + embedded-storage = { version = "0.3" } 54 54 + static_cell = "2.1.1" 55 55 + portable-atomic = { version = "1.11.1", features = ["critical-section"] } 56 56 + log = "0.4.28" 57 57 + pio-proc = "0.3.0" 58 58 + pio = "0.3.0" 59 59 + rand = { version = "0.9.2", default-features = false } 60 60 + ws2812-spi = "0.5.1" 61 61 + smart-leds = "0.4.0" 62 62 + embedded-graphics = { version = "0.8.1", features = ["defmt"] } 63 63 + sh1106 = { version = "0.5.0", features = ["graphics"] } 64 64 + sb-rotary-encoder = "0.1.0" 65 65 + midi-convert = "0.2.0" 66 66 + usbd-midi = "0.5.0" 67 67 + 68 68 + [profile.release] 69 69 + debug = true 70 70 + 71 71 + # Below configs are here to mute the rust-analyzer error. 72 72 + # "Can't find crate for 'test'" as this is a no_std project 73 73 + [[bin]] 74 74 + name = "macropad" 75 75 + test = false 76 76 + bench = false

+21

LICENSE

··· 1 1 + MIT License 2 2 + 3 3 + Copyright (c) 2023 Mike Panetta 4 4 + 5 5 + Permission is hereby granted, free of charge, to any person obtaining a copy 6 6 + of this software and associated documentation files (the "Software"), to deal 7 7 + in the Software without restriction, including without limitation the rights 8 8 + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 9 + copies of the Software, and to permit persons to whom the Software is 10 10 + furnished to do so, subject to the following conditions: 11 11 + 12 12 + The above copyright notice and this permission notice shall be included in all 13 13 + copies or substantial portions of the Software. 14 14 + 15 15 + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 16 + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 17 + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 18 + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 19 + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 20 + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 21 + SOFTWARE.

+36

build.rs

··· 1 1 + //! This build script copies the `memory.x` file from the crate root into 2 2 + //! a directory where the linker can always find it at build time. 3 3 + //! For many projects this is optional, as the linker always searches the 4 4 + //! project root directory -- wherever `Cargo.toml` is. However, if you 5 5 + //! are using a workspace or have a more complicated build setup, this 6 6 + //! build script becomes required. Additionally, by requesting that 7 7 + //! Cargo re-run the build script whenever `memory.x` is changed, 8 8 + //! updating `memory.x` ensures a rebuild of the application with the 9 9 + //! new memory settings. 10 10 + 11 11 + use std::env; 12 12 + use std::fs::File; 13 13 + use std::io::Write; 14 14 + use std::path::PathBuf; 15 15 + 16 16 + fn main() { 17 17 + // Put `memory.x` in our output directory and ensure it's 18 18 + // on the linker search path. 19 19 + let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap()); 20 20 + File::create(out.join("memory.x")) 21 21 + .unwrap() 22 22 + .write_all(include_bytes!("memory.x")) 23 23 + .unwrap(); 24 24 + println!("cargo:rustc-link-search={}", out.display()); 25 25 + 26 26 + // By default, Cargo will re-run a build script whenever 27 27 + // any file in the project changes. By specifying `memory.x` 28 28 + // here, we ensure the build script is only re-run when 29 29 + // `memory.x` is changed. 30 30 + println!("cargo:rerun-if-changed=memory.x"); 31 31 + 32 32 + println!("cargo:rustc-link-arg-bins=--nmagic"); 33 33 + println!("cargo:rustc-link-arg-bins=-Tlink.x"); 34 34 + println!("cargo:rustc-link-arg-bins=-Tlink-rp.x"); 35 35 + println!("cargo:rustc-link-arg-bins=-Tdefmt.x"); 36 36 + }

+17

memory.x

··· 1 1 + MEMORY { 2 2 + BOOT2 : ORIGIN = 0x10000000, LENGTH = 0x100 3 3 + FLASH : ORIGIN = 0x10000100, LENGTH = 8192K - 0x100 4 4 + 5 5 + /* Pick one of the two options for RAM layout */ 6 6 + 7 7 + /* OPTION A: Use all RAM banks as one big block */ 8 8 + /* Reasonable, unless you are doing something */ 9 9 + /* really particular with DMA or other concurrent */ 10 10 + /* access that would benefit from striping */ 11 11 + RAM : ORIGIN = 0x20000000, LENGTH = 264K 12 12 + 13 13 + /* OPTION B: Keep the unstriped sections separate */ 14 14 + /* RAM: ORIGIN = 0x20000000, LENGTH = 256K */ 15 15 + /* SCRATCH_A: ORIGIN = 0x20040000, LENGTH = 4K */ 16 16 + /* SCRATCH_B: ORIGIN = 0x20041000, LENGTH = 4K */ 17 17 + }

+6

rust-toolchain.toml

··· 1 1 + [toolchain] 2 2 + channel = "stable" 3 3 + components = [ "rust-src", "rustfmt", "llvm-tools" ] 4 4 + targets = [ 5 5 + "thumbv6m-none-eabi", 6 6 + ]

+59

src/board.rs

··· 1 1 + use embassy_rp::{ 2 2 + Peri, 3 3 + gpio::{Input, Level, Output, Pull}, 4 4 + peripherals::{PIN_0, PIN_19, PIN_22, PIN_23, PIN_24, PIN_26, PIN_27, PIN_28, SPI0, SPI1}, 5 5 + spi::{Config as SpiConfig, Spi}, 6 6 + }; 7 7 + 8 8 + use crate::{display::Display, key_leds::KeyLeds}; 9 9 + 10 10 + pub struct Peripherals { 11 11 + pub key_leds_spi: Peri<'static, SPI0>, 12 12 + pub key_leds_mosi: Peri<'static, PIN_19>, 13 13 + pub rotary_button: Peri<'static, PIN_0>, 14 14 + pub display_spi: Peri<'static, SPI1>, 15 15 + pub display_cs: Peri<'static, PIN_22>, 16 16 + pub display_rst: Peri<'static, PIN_23>, 17 17 + pub display_dc: Peri<'static, PIN_24>, 18 18 + pub display_sck: Peri<'static, PIN_26>, 19 19 + pub display_mosi: Peri<'static, PIN_27>, 20 20 + pub display_miso: Peri<'static, PIN_28>, 21 21 + } 22 22 + 23 23 + pub struct Board { 24 24 + pub key_leds: KeyLeds, 25 25 + pub display: Display, 26 26 + pub rotary_button: Input<'static>, 27 27 + } 28 28 + 29 29 + impl Board { 30 30 + pub fn new(p: Peripherals) -> Self { 31 31 + let mut led_spi_config = SpiConfig::default(); 32 32 + led_spi_config.frequency = 3_000_000; 33 33 + let led_spi = 34 34 + Spi::new_blocking_txonly_nosck(p.key_leds_spi, p.key_leds_mosi, led_spi_config); 35 35 + let key_leds = KeyLeds::new(led_spi); 36 36 + 37 37 + let mut display_spi_config = SpiConfig::default(); 38 38 + display_spi_config.frequency = 8_000_000; 39 39 + let display_spi = Spi::new_blocking( 40 40 + p.display_spi, 41 41 + p.display_sck, 42 42 + p.display_mosi, 43 43 + p.display_miso, 44 44 + display_spi_config, 45 45 + ); 46 46 + let dc = Output::new(p.display_dc, Level::Low); 47 47 + let cs = Output::new(p.display_cs, Level::Low); 48 48 + let rst = Output::new(p.display_rst, Level::Low); 49 49 + let display = Display::new(display_spi, dc, cs, rst); 50 50 + 51 51 + let rotary_button = Input::new(p.rotary_button, Pull::Up); 52 52 + 53 53 + Self { 54 54 + key_leds, 55 55 + display, 56 56 + rotary_button, 57 57 + } 58 58 + } 59 59 + }

+29

src/debounced_button.rs

··· 1 1 + use embassy_rp::gpio::Input; 2 2 + use embassy_time::{Duration, Timer}; 3 3 + 4 4 + pub struct DebouncedButton<'a> { 5 5 + pub threshold: Duration, 6 6 + input: Input<'a>, 7 7 + } 8 8 + 9 9 + impl<'a> DebouncedButton<'a> { 10 10 + pub fn new(input: Input<'a>, threshold: Duration) -> Self { 11 11 + DebouncedButton { threshold, input } 12 12 + } 13 13 + 14 14 + pub async fn on_change(&mut self) -> bool { 15 15 + loop { 16 16 + let l1 = self.pressed(); 17 17 + self.input.wait_for_any_edge().await; 18 18 + Timer::after(self.threshold).await; 19 19 + let l2 = self.pressed(); 20 20 + if l1 != l2 { 21 21 + break l2; 22 22 + } 23 23 + } 24 24 + } 25 25 + 26 26 + fn pressed(&mut self) -> bool { 27 27 + self.input.is_low() 28 28 + } 29 29 + }

+36

src/display.rs

··· 1 1 + use embassy_rp::{ 2 2 + gpio::Output, 3 3 + peripherals::SPI1, 4 4 + spi::{Blocking, Config, Spi}, 5 5 + }; 6 6 + use sh1106::{mode::GraphicsMode, prelude::SpiInterface}; 7 7 + 8 8 + type SpiOut = Spi<'static, SPI1, Blocking>; 9 9 + pub struct Display { 10 10 + pub display: GraphicsMode<SpiInterface<SpiOut, Output<'static>, Output<'static>>>, 11 11 + rst: Output<'static>, 12 12 + } 13 13 + 14 14 + impl Display { 15 15 + pub fn new( 16 16 + spi: SpiOut, 17 17 + dc: Output<'static>, 18 18 + cs: Output<'static>, 19 19 + rst: Output<'static>, 20 20 + ) -> Self { 21 21 + let mut display_spi_config = Config::default(); 22 22 + display_spi_config.frequency = 8_000_000; 23 23 + let display: GraphicsMode<_> = sh1106::Builder::new().connect_spi(spi, dc, cs).into(); 24 24 + Self { display, rst } 25 25 + } 26 26 + 27 27 + pub fn init(&mut self) { 28 28 + self.rst.set_high(); 29 29 + self.display.init().unwrap(); 30 30 + self.display.flush().unwrap(); 31 31 + } 32 32 + 33 33 + pub fn flush(&mut self) { 34 34 + self.display.flush().unwrap(); 35 35 + } 36 36 + }

+38

src/key_leds.rs

··· 1 1 + use crate::{COLS, ROWS}; 2 2 + use embassy_rp::{ 3 3 + peripherals::SPI0, 4 4 + spi::{Blocking, Spi}, 5 5 + }; 6 6 + use smart_leds::{RGB, SmartLedsWrite}; 7 7 + use ws2812_spi::{Ws2812, devices}; 8 8 + 9 9 + const NUM_LEDS: usize = ROWS * COLS; 10 10 + 11 11 + pub type Coord = (u8, u8); 12 12 + 13 13 + type SpiOut = Spi<'static, SPI0, Blocking>; 14 14 + type Driver = Ws2812<SpiOut, devices::Ws2812>; 15 15 + 16 16 + pub struct KeyLeds { 17 17 + leds: [RGB<u8>; NUM_LEDS], 18 18 + driver: Driver, 19 19 + } 20 20 + 21 21 + impl KeyLeds { 22 22 + pub fn new(spi: SpiOut) -> Self { 23 23 + let leds = [RGB::default(); NUM_LEDS]; 24 24 + let mut driver = Ws2812::new(spi); 25 25 + driver.write(leds).unwrap(); 26 26 + 27 27 + Self { leds, driver } 28 28 + } 29 29 + 30 30 + pub fn set(&mut self, coord: Coord, value: RGB<u8>) { 31 31 + let index = coord.1 as usize * COLS + coord.0 as usize; 32 32 + self.leds[index] = value; 33 33 + } 34 34 + 35 35 + pub fn write(&mut self) { 36 36 + self.driver.write(self.leds).unwrap(); 37 37 + } 38 38 + }

+195

src/main.rs

··· 1 1 + #![no_std] 2 2 + #![no_main] 3 3 + 4 4 + use defmt::*; 5 5 + use embassy_executor::Spawner; 6 6 + use embassy_rp::{ 7 7 + Peri, bind_interrupts, 8 8 + gpio::{AnyPin, Level, Output}, 9 9 + peripherals::USB, 10 10 + usb::{Driver, Instance, InterruptHandler}, 11 11 + }; 12 12 + use embassy_time::{Delay, Duration, Timer}; 13 13 + use embassy_usb::{class::midi::MidiClass, driver::EndpointError}; 14 14 + use embedded_graphics::{ 15 15 + mono_font::{MonoTextStyleBuilder, ascii::FONT_6X10}, 16 16 + pixelcolor::BinaryColor, 17 17 + prelude::*, 18 18 + text::{Baseline, Text}, 19 19 + }; 20 20 + mod tasks; 21 21 + use embedded_hal_1::delay::DelayNs; 22 22 + use smart_leds::RGB; 23 23 + use tasks::{read_controls, read_key}; 24 24 + mod display; 25 25 + use crate::{ 26 26 + board::{Board, Peripherals}, 27 27 + tasks::{LIGHTS_CHANNEL, LedUpdate, read_button, sequencer, update_lights}, 28 28 + }; 29 29 + use midi_convert::{ 30 30 + midi_types::{MidiMessage, Note}, 31 31 + render_slice::MidiRenderSlice, 32 32 + }; 33 33 + use usbd_midi::{CableNumber, UsbMidiEventPacket}; 34 34 + 35 35 + use {defmt_rtt as _, panic_probe as _}; 36 36 + mod board; 37 37 + mod debounced_button; 38 38 + mod key_leds; 39 39 + mod usb; 40 40 + 41 41 + bind_interrupts!(struct Irqs { 42 42 + USBCTRL_IRQ => InterruptHandler<USB>; 43 43 + }); 44 44 + 45 45 + const COLS: usize = 3; 46 46 + const ROWS: usize = 4; 47 47 + 48 48 + type KeyGrid<T> = [[T; COLS]; ROWS]; 49 49 + 50 50 + #[embassy_executor::main] 51 51 + async fn main(spawner: Spawner) { 52 52 + let p = embassy_rp::init(Default::default()); 53 53 + 54 54 + let peripherals = Peripherals { 55 55 + key_leds_spi: p.SPI0, 56 56 + key_leds_mosi: p.PIN_19, 57 57 + rotary_button: p.PIN_0, 58 58 + display_spi: p.SPI1, 59 59 + display_cs: p.PIN_22, 60 60 + display_rst: p.PIN_23, 61 61 + display_dc: p.PIN_24, 62 62 + display_sck: p.PIN_26, 63 63 + display_mosi: p.PIN_27, 64 64 + display_miso: p.PIN_28, 65 65 + }; 66 66 + 67 67 + let mut board = Board::new(peripherals); 68 68 + 69 69 + board.display.init(); 70 70 + let text_style = MonoTextStyleBuilder::new() 71 71 + .font(&FONT_6X10) 72 72 + .text_color(BinaryColor::On) 73 73 + .build(); 74 74 + 75 75 + Text::with_baseline("Hello, world!", Point::zero(), text_style, Baseline::Top) 76 76 + .draw(&mut board.display.display) 77 77 + .unwrap(); 78 78 + 79 79 + board.display.flush(); 80 80 + 81 81 + spawner.spawn(read_controls()).unwrap(); 82 82 + spawner.spawn(update_lights(board.key_leds)).unwrap(); 83 83 + spawner.spawn(read_button(board.rotary_button)).unwrap(); 84 84 + spawner.spawn(sequencer()).unwrap(); 85 85 + 86 86 + LIGHTS_CHANNEL 87 87 + .send(LedUpdate { 88 88 + coord: (2, 3), 89 89 + color: RGB { 90 90 + r: 0x40, 91 91 + g: 0, 92 92 + b: 0, 93 93 + }, 94 94 + }) 95 95 + .await; 96 96 + 97 97 + let keys: [[Peri<'static, AnyPin>; COLS]; ROWS] = [ 98 98 + [p.PIN_1.into(), p.PIN_2.into(), p.PIN_3.into()], 99 99 + [p.PIN_4.into(), p.PIN_5.into(), p.PIN_6.into()], 100 100 + [p.PIN_7.into(), p.PIN_8.into(), p.PIN_9.into()], 101 101 + [p.PIN_10.into(), p.PIN_11.into(), p.PIN_12.into()], 102 102 + ]; 103 103 + 104 104 + for (y, row) in keys.into_iter().enumerate() { 105 105 + for (x, pin) in row.into_iter().enumerate() { 106 106 + spawner.spawn(read_key(pin, (x as u8, y as u8))).unwrap(); 107 107 + } 108 108 + } 109 109 + 110 110 + let mut led = Output::new(p.PIN_13, Level::Low); 111 111 + 112 112 + //let driver = embassy_rp::usb::Driver::new(p.USB, Irqs); 113 113 + //let mut usb_config = embassy_usb::Config::new(0xc0de, 0xcafe); 114 114 + //usb_config.manufacturer = Some("Heuristic Industries"); 115 115 + //usb_config.product = Some("Macropad"); 116 116 + //usb_config.serial_number = Some("123456789"); 117 117 + //usb_config.max_power = 100; 118 118 + //usb_config.max_packet_size_0 = 64; 119 119 + 120 120 + //let mut config_descriptor = [0; 256]; 121 121 + //let mut bos_descriptor = [0; 256]; 122 122 + //let mut control_buf = [0; 64]; 123 123 + 124 124 + //let mut usb_builder = embassy_usb::Builder::new( 125 125 + // driver, 126 126 + // usb_config, 127 127 + // &mut config_descriptor, 128 128 + // &mut bos_descriptor, 129 129 + // &mut [], // no msos descriptors 130 130 + // &mut control_buf, 131 131 + //); 132 132 + 133 133 + //let mut class = MidiClass::new(&mut usb_builder, 1, 1, 64); 134 134 + //let mut usb = usb_builder.build(); 135 135 + //let usb_fut = usb.run(); 136 136 + 137 137 + //let midi_fut = async { 138 138 + // loop { 139 139 + // class.wait_connection().await; 140 140 + // let _ = midi_echo(&mut class, &mut led).await; 141 141 + // } 142 142 + //}; 143 143 + 144 144 + //join(usb_fut, midi_fut).await; 145 145 + loop { 146 146 + Timer::after_millis(500).await; 147 147 + led.toggle(); 148 148 + } 149 149 + } 150 150 + 151 151 + struct Disconnected {} 152 152 + 153 153 + impl From<EndpointError> for Disconnected { 154 154 + fn from(val: EndpointError) -> Self { 155 155 + match val { 156 156 + EndpointError::BufferOverflow => defmt::panic!("Buffer overflow"), 157 157 + EndpointError::Disabled => Disconnected {}, 158 158 + } 159 159 + } 160 160 + } 161 161 + 162 162 + async fn midi_echo<'d, T: Instance + 'd>( 163 163 + class: &mut MidiClass<'d, Driver<'d, T>>, 164 164 + led: &mut Output<'_>, 165 165 + ) -> Result<(), Disconnected> { 166 166 + //let mut buf = [0; 64]; 167 167 + 168 168 + let on_message = MidiMessage::NoteOn(1.into(), Note::C0, 0x34.into()); 169 169 + let mut on_buffer = [0u8; 3]; 170 170 + on_message.render_slice(&mut on_buffer); 171 171 + let on_packet = 172 172 + UsbMidiEventPacket::try_from_payload_bytes(CableNumber::Cable0, &on_buffer).unwrap(); 173 173 + 174 174 + let off_message = MidiMessage::NoteOff(1.into(), Note::C0, 0x34.into()); 175 175 + let mut off_buffer = [0u8; 3]; 176 176 + off_message.render_slice(&mut off_buffer); 177 177 + let off_packet = 178 178 + UsbMidiEventPacket::try_from_payload_bytes(CableNumber::Cable0, &off_buffer).unwrap(); 179 179 + 180 180 + loop { 181 181 + led.set_high(); 182 182 + class.write_packet(on_packet.as_raw_bytes()).await?; 183 183 + Timer::after(Duration::from_millis(500)).await; 184 184 + 185 185 + led.set_low(); 186 186 + class.write_packet(off_packet.as_raw_bytes()).await?; 187 187 + Timer::after(Duration::from_millis(500)).await; 188 188 + 189 189 + //let n = class.read_packet(&mut buf).await?; 190 190 + //let data = &buf[..n]; 191 191 + 192 192 + //info!("data: {:x}", data); 193 193 + //class.write_packet(data).await?; 194 194 + } 195 195 + }

+36

src/tasks/buttons.rs

··· 1 1 + use embassy_rp::{ 2 2 + Peri, 3 3 + gpio::{AnyPin, Input, Pull}, 4 4 + }; 5 5 + use embassy_time::Duration; 6 6 + 7 7 + use crate::{ 8 8 + debounced_button::DebouncedButton, 9 9 + key_leds::Coord, 10 10 + tasks::controls::{CONTROLS_CHANNEL, ControlEvent}, 11 11 + }; 12 12 + 13 13 + #[embassy_executor::task(pool_size = 12)] 14 14 + pub async fn read_key(pin: Peri<'static, AnyPin>, coord: Coord) { 15 15 + let input = Input::new(pin, Pull::Up); 16 16 + let mut button = DebouncedButton::new(input, Duration::from_millis(10)); 17 17 + 18 18 + loop { 19 19 + let pressed = button.on_change().await; 20 20 + CONTROLS_CHANNEL 21 21 + .send(ControlEvent::Key { pressed, coord }) 22 22 + .await; 23 23 + } 24 24 + } 25 25 + 26 26 + #[embassy_executor::task] 27 27 + pub async fn read_button(input: Input<'static>) { 28 28 + let mut button = DebouncedButton::new(input, Duration::from_millis(10)); 29 29 + 30 30 + loop { 31 31 + let pressed = button.on_change().await; 32 32 + CONTROLS_CHANNEL 33 33 + .send(ControlEvent::RotaryButton { pressed }) 34 34 + .await; 35 35 + } 36 36 + }

+84

src/tasks/controls.rs

··· 1 1 + use embassy_sync::{blocking_mutex::raw::ThreadModeRawMutex, channel::Channel}; 2 2 + use smart_leds::RGB; 3 3 + 4 4 + use crate::{ 5 5 + COLS, KeyGrid, ROWS, 6 6 + key_leds::Coord, 7 7 + tasks::lights::{LIGHTS_CHANNEL, LedUpdate}, 8 8 + }; 9 9 + 10 10 + pub static CONTROLS_CHANNEL: Channel<ThreadModeRawMutex, ControlEvent, 10> = Channel::new(); 11 11 + 12 12 + pub enum ControlEvent { 13 13 + Key { pressed: bool, coord: Coord }, 14 14 + RotaryButton { pressed: bool }, 15 15 + SequencerStep { coord: Coord }, 16 16 + } 17 17 + 18 18 + #[embassy_executor::task] 19 19 + pub async fn read_controls() { 20 20 + let mut key_state: KeyGrid<bool> = [[false; COLS]; ROWS]; 21 21 + let active = RGB { 22 22 + r: 0x40, 23 23 + g: 0x00, 24 24 + b: 0x00, 25 25 + }; 26 26 + 27 27 + let off = RGB { r: 0, g: 0, b: 0 }; 28 28 + let mut step: Coord = (0, 0); 29 29 + 30 30 + loop { 31 31 + match CONTROLS_CHANNEL.receive().await { 32 32 + ControlEvent::Key { pressed, coord } => { 33 33 + if !pressed { 34 34 + continue; 35 35 + } 36 36 + 37 37 + let mut state = key_state[coord.1 as usize][coord.0 as usize]; 38 38 + state = !state; 39 39 + key_state[coord.1 as usize][coord.0 as usize] = state; 40 40 + let color = if state { active } else { off }; 41 41 + LIGHTS_CHANNEL.send(LedUpdate { coord, color }).await; 42 42 + } 43 43 + ControlEvent::RotaryButton { pressed } => { 44 44 + if !pressed { 45 45 + continue; 46 46 + } 47 47 + 48 48 + for y in 0..4 { 49 49 + for x in 0..3 { 50 50 + LIGHTS_CHANNEL 51 51 + .send(LedUpdate { 52 52 + coord: (x, y), 53 53 + color: RGB { 54 54 + r: 0x40, 55 55 + g: 0, 56 56 + b: 0, 57 57 + }, 58 58 + }) 59 59 + .await; 60 60 + } 61 61 + } 62 62 + } 63 63 + ControlEvent::SequencerStep { coord } => { 64 64 + LIGHTS_CHANNEL 65 65 + .send(LedUpdate { 66 66 + coord: step, 67 67 + color: RGB { r: 0, g: 0, b: 0 }, 68 68 + }) 69 69 + .await; 70 70 + LIGHTS_CHANNEL 71 71 + .send(LedUpdate { 72 72 + coord, 73 73 + color: RGB { 74 74 + r: 0, 75 75 + g: 0, 76 76 + b: 0x50, 77 77 + }, 78 78 + }) 79 79 + .await; 80 80 + step = coord; 81 81 + } 82 82 + } 83 83 + } 84 84 + }

+20

src/tasks/lights.rs

··· 1 1 + use embassy_sync::{blocking_mutex::raw::ThreadModeRawMutex, channel::Channel}; 2 2 + use smart_leds::RGB; 3 3 + 4 4 + use crate::key_leds::{Coord, KeyLeds}; 5 5 + 6 6 + pub static LIGHTS_CHANNEL: Channel<ThreadModeRawMutex, LedUpdate, 3> = Channel::new(); 7 7 + 8 8 + pub struct LedUpdate { 9 9 + pub coord: Coord, 10 10 + pub color: RGB<u8>, 11 11 + } 12 12 + 13 13 + #[embassy_executor::task] 14 14 + pub async fn update_lights(mut key_leds: KeyLeds) { 15 15 + loop { 16 16 + let led_update = LIGHTS_CHANNEL.receive().await; 17 17 + key_leds.set(led_update.coord, led_update.color); 18 18 + key_leds.write(); 19 19 + } 20 20 + }

+9

src/tasks/mod.rs

··· 1 1 + mod buttons; 2 2 + mod controls; 3 3 + mod lights; 4 4 + mod sequencer; 5 5 + 6 6 + pub use buttons::{read_button, read_key}; 7 7 + pub use controls::{CONTROLS_CHANNEL, read_controls}; 8 8 + pub use lights::{LIGHTS_CHANNEL, LedUpdate, update_lights}; 9 9 + pub use sequencer::sequencer;

+26

src/tasks/sequencer.rs

··· 1 1 + use embassy_time::Timer; 2 2 + 3 3 + use crate::{ 4 4 + COLS, 5 5 + tasks::{CONTROLS_CHANNEL, controls::ControlEvent}, 6 6 + }; 7 7 + 8 8 + #[embassy_executor::task] 9 9 + pub async fn sequencer() { 10 10 + let mut step: u8 = 0; 11 11 + let cols = COLS as u8; 12 12 + 13 13 + loop { 14 14 + let coord = (step % cols, step / cols); 15 15 + CONTROLS_CHANNEL 16 16 + .send(ControlEvent::SequencerStep { coord }) 17 17 + .await; 18 18 + 19 19 + step += 1; 20 20 + if step == 12 { 21 21 + step = 0; 22 22 + } 23 23 + 24 24 + Timer::after_millis(500).await; 25 25 + } 26 26 + }

+41

src/usb.rs

··· 1 1 + //use embassy_rp::{peripherals::USB, usb::Driver}; 2 2 + //use embassy_usb::{Config}; 3 3 + // 4 4 + //type UsbDriver = Driver<'static, USB>; 5 5 + // 6 6 + //pub struct Usb<'a> { 7 7 + // config: Config<'a>, 8 8 + // config_descriptor: [u8; 256], 9 9 + // bos_descriptor: [u8; 256] 10 10 + // control_buf: [u8; 64], 11 11 + //} 12 12 + // 13 13 + //impl<'a> Usb<'a> { 14 14 + // pub fn new() -> Self { 15 15 + // let mut config = embassy_usb::Config::new(0xc0de, 0xcafe); 16 16 + // config.manufacturer = Some("Heuristic Industries"); 17 17 + // config.product = Some("Macropad"); 18 18 + // config.serial_number = Some("123456789"); 19 19 + // config.max_power = 100; 20 20 + // config.max_packet_size_0 = 64; 21 21 + // 22 22 + // let config_descriptor = [0; 256]; 23 23 + // let bos_descriptor = [0; 256]; 24 24 + // let control_buf = [0; 64]; 25 25 + // 26 26 + // Self { config, config_descriptor, bos_descriptor, control_buf} 27 27 + // } 28 28 + // pub fn init(&mut self, driver: UsbDriver) { 29 29 + // let builder = embassy_usb::Builder::new( 30 30 + // driver, 31 31 + // self.config, 32 32 + // &mut self.config_descriptor, 33 33 + // &mut self.bos_descriptor, 34 34 + // &mut [], // no msos descriptors 35 35 + // &mut self.control_buf, 36 36 + // ); 37 37 + // 38 38 + // let mut usb = builder.build(); 39 39 + // usb.run(); 40 40 + // } 41 41 + //}