Rename teh dotstar pi project

Cargo.lock

@@ -373,12 +373,12 @@ dependencies = [
  "cortex-m",
  "cortex-m-rt",
  "embedded-alloc",
- "embedded-hal",
+ "embedded-hal 0.2.7",
  "fixed",
  "fugit",
  "lights-core",
- "panic-halt",
+ "panic-halt 0.2.0",
- "rp-pico",
+ "rp-pico 0.8.0",
 ]
 
 [[package]]
@@ -429,6 +429,12 @@ version = "0.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "46afbd2983a5d5a7bd740ccb198caf5b82f45c40c09c0eed36052d91cb92e719"
 
+[[package]]
+name = "bitfield"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2d7e60934ceec538daadb9d8432424ed043a904d8e0243f3c6446bce549a46ac"
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -775,8 +781,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ec610d8f49840a5b376c69663b6369e71f4b34484b9b2eb29fb918d92516cb9"
 dependencies = [
  "bare-metal",
- "bitfield",
+ "bitfield 0.13.2",
- "embedded-hal",
+ "embedded-hal 0.2.7",
  "volatile-register",
 ]
 
@@ -1067,6 +1073,37 @@ dependencies = [
  "void",
 ]
 
+[[package]]
+name = "embedded-hal"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "361a90feb7004eca4019fb28352a9465666b24f840f5c3cddf0ff13920590b89"
+
+[[package]]
+name = "embedded-hal-async"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c4c685bbef7fe13c3c6dd4da26841ed3980ef33e841cddfa15ce8a8fb3f1884"
+dependencies = [
+ "embedded-hal 1.0.0",
+]
+
+[[package]]
+name = "embedded-hal-nb"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fba4268c14288c828995299e59b12babdbe170f6c6d73731af1b4648142e8605"
+dependencies = [
+ "embedded-hal 1.0.0",
+ "nb 1.1.0",
+]
+
+[[package]]
+name = "embedded-io"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "edd0f118536f44f5ccd48bcb8b111bdc3de888b58c74639dfb034a357d0f206d"
+
 [[package]]
 name = "emseries"
 version = "0.6.0"
@@ -1973,6 +2010,26 @@ dependencies = [
  "crunchy",
 ]
 
+[[package]]
+name = "halloween-leds"
+version = "0.1.0"
+dependencies = [
+ "cortex-m-rt",
+ "embedded-hal 1.0.0",
+ "embedded-io",
+ "panic-halt 1.0.0",
+ "rp-pico 0.9.0",
+]
+
+[[package]]
+name = "hash32"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47d60b12902ba28e2730cd37e95b8c9223af2808df9e902d4df49588d1470606"
+dependencies = [
+ "byteorder",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.14.5"
@@ -2022,6 +2079,16 @@ dependencies = [
  "http 0.2.12",
 ]
 
+[[package]]
+name = "heapless"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0bfb9eb618601c89945a70e254898da93b13be0388091d42117462b265bb3fad"
+dependencies = [
+ "hash32",
+ "stable_deref_trait",
+]
+
 [[package]]
 name = "heck"
 version = "0.4.1"
@@ -3082,6 +3149,12 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "de96540e0ebde571dc55c73d60ef407c653844e6f9a1e2fdbd40c07b9252d812"
 
+[[package]]
+name = "panic-halt"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a513e167849a384b7f9b746e517604398518590a9142f4846a32e3c2a4de7b11"
+
 [[package]]
 name = "parking"
 version = "2.2.1"
@@ -3810,8 +3883,21 @@ dependencies = [
  "cortex-m-rt",
  "fugit",
  "rp2040-boot2",
- "rp2040-hal",
+ "rp2040-hal 0.9.2",
- "usb-device",
+ "usb-device 0.2.9",
+]
+
+[[package]]
+name = "rp-pico"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9342d3ac7011ac688300979e9b52a81f0add1d05feb02868cf94bfee0705b28"
+dependencies = [
+ "cortex-m-rt",
+ "fugit",
+ "rp2040-boot2",
+ "rp2040-hal 0.10.2",
+ "usb-device 0.3.2",
 ]
 
 [[package]]
@@ -3832,7 +3918,7 @@ dependencies = [
  "cortex-m",
  "critical-section",
  "embedded-dma",
- "embedded-hal",
+ "embedded-hal 0.2.7",
  "frunk",
  "fugit",
  "itertools 0.10.5",
@@ -3841,8 +3927,37 @@ dependencies = [
  "pio",
  "rand_core 0.6.4",
  "rp2040-hal-macros",
- "rp2040-pac",
+ "rp2040-pac 0.5.0",
- "usb-device",
+ "usb-device 0.2.9",
+ "vcell",
+ "void",
+]
+
+[[package]]
+name = "rp2040-hal"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d11e711940087f2cdff8aeae9f4b902e2014c06a00b39a1092686b81ec973d6f"
+dependencies = [
+ "bitfield 0.14.0",
+ "cortex-m",
+ "critical-section",
+ "embedded-dma",
+ "embedded-hal 0.2.7",
+ "embedded-hal 1.0.0",
+ "embedded-hal-async",
+ "embedded-hal-nb",
+ "embedded-io",
+ "frunk",
+ "fugit",
+ "itertools 0.10.5",
+ "nb 1.1.0",
+ "paste",
+ "pio",
+ "rand_core 0.6.4",
+ "rp2040-hal-macros",
+ "rp2040-pac 0.6.0",
+ "usb-device 0.3.2",
  "vcell",
  "void",
 ]
@@ -3871,6 +3986,18 @@ dependencies = [
  "vcell",
 ]
 
+[[package]]
+name = "rp2040-pac"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "83cbcd3f7a0ca7bbe61dc4eb7e202842bee4e27b769a7bf3a4a72fa399d6e404"
+dependencies = [
+ "cortex-m",
+ "cortex-m-rt",
+ "critical-section",
+ "vcell",
+]
+
 [[package]]
 name = "rsa"
 version = "0.9.6"
@@ -5086,6 +5213,16 @@ version = "0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1f6cc3adc849b5292b4075fc0d5fdcf2f24866e88e336dd27a8943090a520508"
 
+[[package]]
+name = "usb-device"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "98816b1accafbb09085168b90f27e93d790b4bfa19d883466b5e53315b5f06a6"
+dependencies = [
+ "heapless",
+ "portable-atomic",
+]
+
 [[package]]
 name = "utf-8"
 version = "0.7.6"

Cargo.toml

@@ -30,5 +30,5 @@ members = [
     "sgf",
     "timezone-testing",
     "tree",
-    "visions/server", "gm-dash/server",
+    "visions/server", "gm-dash/server", "halloween-leds"
 ]

pico-dotstar-pulsation/.cargo/config.toml

@@ -0,0 +1,12 @@
+[build]
+target = "thumbv6m-none-eabi"
+
+[target.thumbv6m-none-eabi]
+rustflags = [
+    "-C", "link-arg=--nmagic",
+    "-C", "link-arg=-Tlink.x",
+    "-C", "llvm-args=--inline-threshold=5",
+    "-C", "no-vectorize-loops",
+]
+
+runner = "elf2uf2-rs -d"

pico-dotstar-pulsation/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "halloween-leds"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+cortex-m-rt = "0.7.3"
+embedded-hal = "1.0.0"
+embedded-io = "0.6.1"
+panic-halt = "1.0.0"
+rp-pico = "0.9.0"

pico-dotstar-pulsation/src/main.rs

@@ -0,0 +1,125 @@
+#![no_main]
+#![no_std]
+
+/// This application demonstrates using a Raspberry Pi Pico to control an individual SK9822 module.
+/// Keep in mind that the Pico, though it accepts 5V for power, it runs on 3.3V logic. The GPIO
+/// pins will emit only 3.3 volts, and the SK9822 needs 5V logic. So, make sure that the GPIO pins
+/// run through a transistor or a logic level lhifter to go from 3.3V logic to 5V logic.
+use embedded_hal::{delay::DelayNs, spi::SpiBus};
+use panic_halt as _;
+use rp_pico::{
+    entry,
+    hal::{
+        clocks::init_clocks_and_plls,
+        fugit::RateExtU32,
+        gpio::{
+            bank0::{Gpio10, Gpio11},
+            FunctionSpi, Pin, PullDown,
+        },
+        spi::Spi,
+        Clock, Sio, Timer, Watchdog,
+    },
+    pac, Pins,
+};
+
+const FPS: u32 = 60;
+const MS_PER_FRAME: u32 = 1000 / FPS;
+const XOSC_CRYSTAL_FREQ: u32 = 12_000_000; // MHz, https://forums.raspberrypi.com/viewtopic.php?t=356764
+
+#[entry]
+unsafe fn main() -> ! {
+    // rp_pico::pac::Peripherals is a reference to physical hardware defined on the Pico.
+    let mut peripherals = pac::Peripherals::take().unwrap();
+
+    // SIO inidcates "Single Cycle IO". I don't know what this means, but it could mean that this
+    // is a class of IO operations that can be run in a single clock cycle, such as switching a
+    // GPIO pin on or off.
+    let sio = Sio::new(peripherals.SIO);
+
+    // Many of the following systems require a watchdog. I do not know what this does, either, but
+    // it may be some failsafe software that will reset operations if the watchdog detects a lack
+    // of activity.
+    let mut watchdog = Watchdog::new(peripherals.WATCHDOG);
+
+    // Here we grab the GPIO pins in bank 0.
+    let pins = Pins::new(
+        peripherals.IO_BANK0,
+        peripherals.PADS_BANK0,
+        sio.gpio_bank0,
+        &mut peripherals.RESETS,
+    );
+
+    // Initialize an abstraction of the clock system with a batch of standard hardware clocks.
+    let clocks = init_clocks_and_plls(
+        XOSC_CRYSTAL_FREQ,
+        peripherals.XOSC,
+        peripherals.CLOCKS,
+        peripherals.PLL_SYS,
+        peripherals.PLL_USB,
+        &mut peripherals.RESETS,
+        &mut watchdog,
+    )
+    .ok()
+    .unwrap();
+
+    // An abstraction for a timer which we can use to delay the code.
+    let mut timer = Timer::new(peripherals.TIMER, &mut peripherals.RESETS, &clocks);
+
+    // Grab the clock and data pins for SPI1. For Clock pins and for Data pins, there are only two
+    // pins each on the Pico which can function for SPI1.
+    let spi_clk: Pin<Gpio10, FunctionSpi, PullDown> = pins.gpio10.into_function();
+    let spi_sdo: Pin<Gpio11, FunctionSpi, PullDown> = pins.gpio11.into_function();
+
+    // Now, create the SPI function abstraction for SPI1 with spi_clk and spi_sdo.
+    let mut spi = Spi::<_, _, _, 8>::new(peripherals.SPI1, (spi_sdo, spi_clk)).init(
+        &mut peripherals.RESETS,
+        // The SPI system uses the peripheral clock
+        clocks.peripheral_clock.freq(),
+        // Transmit data at a rate of 1Mbit.
+        1_u32.MHz(),
+        // Run with SPI Mode 1. This means that the clock line should start high and that data will
+        // be sampled starting at the first falling edge.
+        embedded_hal::spi::MODE_1,
+    );
+
+    // byte count: 4 for the start frame
+    //             1 * 4 for three lights with 4 bytes per light
+    //             4 for the end frame
+    //             = 20 bytes
+    let mut lights: [u8; 12] = [0; 12];
+    // We just skip the first four bytes, because the start frame is four bytes of 0.
+
+    // Set the first byte of the one and only lamp. The first byte follows the pattern of three 1
+    // bits followed by five additional bits that indicate an overall brightness level of the
+    // pixel. The datasheet for the SK9822 doesn't specify the exact effect, but it does mean that
+    // the higher this number is, the brighter 255 means for an given LED in the array. 1 is the
+    // lowest brightness that emits light, and 31 is the highest supported brightness.
+    lights[4] = 0xe0 + 1;
+    // Set the Blue light of the dotstar to 255, assuming the dotstar frame format is RBG. Note
+    // that the standard SK9822 datasheed indicates that the format is BGR. Your mileage may vary.
+    lights[6] = 255;
+
+    // The end frame is four bytes of 255.
+    lights[8] = 0xff;
+    lights[9] = 0xff;
+    lights[10] = 0xff;
+    lights[11] = 0xff;
+
+
+    // The rest of this is just a stock pulsating animation which is slightly brightening and
+    // dimming the *blue* LED (on my set of dotstars).
+    let mut brightness = 1;
+    let mut step = 1;
+    loop {
+        if brightness == 64 && step == 1 {
+            step = -1;
+        } else if brightness == 1 && step == -1 {
+            step = 1;
+        };
+        lights[5] = brightness as u8;
+        brightness = brightness + step;
+
+        let _ = spi.write(lights.as_slice());
+        timer.delay_ms(MS_PER_FRAME);
+    }
+}