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Swap to the ItsyBitsy controller

This commit is contained in:
Tangent 128 2019-03-22 00:53:09 -04:00
parent 52ed3d19df
commit 5821dbffb5
4 changed files with 111 additions and 16 deletions
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30
hello_gradient/Cargo.lock generated
View File

@ -10,7 +10,7 @@ name = "atsamd-hal"
version = "0.4.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"atsamd21e18a 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
"atsamd21g18a 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
"bitfield 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
"cortex-m 0.5.8 (registry+https://github.com/rust-lang/crates.io-index)",
"embedded-hal 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
@ -21,7 +21,7 @@ dependencies = [
]
[[package]]
name = "atsamd21e18a"
name = "atsamd21g18a"
version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
@ -84,7 +84,15 @@ dependencies = [
]
[[package]]
name = "gemma_m0"
name = "hello_gradient"
version = "0.1.0"
dependencies = [
"itsybitsy_m0_lights 0.1.0",
"lights 0.1.0",
]
[[package]]
name = "itsybitsy_m0"
version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
@ -96,24 +104,16 @@ dependencies = [
]
[[package]]
name = "gemma_m0_lights"
name = "itsybitsy_m0_lights"
version = "0.1.0"
dependencies = [
"cortex-m 0.5.8 (registry+https://github.com/rust-lang/crates.io-index)",
"embedded-hal 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
"gemma_m0 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
"itsybitsy_m0 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
"lights 0.1.0",
"panic-halt 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "hello_gradient"
version = "0.1.0"
dependencies = [
"gemma_m0_lights 0.1.0",
"lights 0.1.0",
]
[[package]]
name = "lights"
version = "0.1.0"
@ -257,14 +257,14 @@ dependencies = [
[metadata]
"checksum aligned 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d39da9b88ae1a81c03c9c082b8db83f1d0e93914126041962af61034ab44c4a5"
"checksum atsamd-hal 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e0f224a1a946c4e817e87ed76d2dd48089bf545d35d4f30e83d579a87216681c"
"checksum atsamd21e18a 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "139787a30d118dd09a2e9570f5404cf582b70afe9b53dd1194239f9be382b897"
"checksum atsamd21g18a 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9f88795edced90ee7cf401714e60c3b7878d9fe9025059302e57a3b757f45e51"
"checksum bare-metal 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "a3caf393d93b2d453e80638d0674597020cef3382ada454faacd43d1a55a735a"
"checksum bitfield 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a260ed6b9f3ca16a4389390b1b1cd15a3bc0a9d3e63b1ef39f4978cec58a4e83"
"checksum cortex-m 0.5.8 (registry+https://github.com/rust-lang/crates.io-index)" = "dab2164a0fc216781a47fc343347365112ae6917421d3fa4bac6faf0fbaaaec7"
"checksum cortex-m-rt 0.6.7 (registry+https://github.com/rust-lang/crates.io-index)" = "f69d2beca37acc3776c17201c9d1f8904fb9139fa3a4d2cf28c8436a07b21a88"
"checksum cortex-m-rt-macros 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "d7ae692573e0acccb1579fef1abf5a5bf1d2f3f0149a22b16870ec9309aee25f"
"checksum embedded-hal 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9880e55238830314d41d88f1ac7a819d495799c3cc3bc392cc172bab26428c33"
"checksum gemma_m0 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5e0b6ce273c7aee0101ad2ca75b5459b7498d6a09e241de34aaf51b7f1abe222"
"checksum itsybitsy_m0 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c457960b339e016d68b64f928b7b2ea064574543573963642ee02b2039382d15"
"checksum nb 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "69f380b5fe9fab8c0d7a6a99cda23e2cc0463bedb2cbc3aada0813b98496ecdc"
"checksum panic-halt 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "de96540e0ebde571dc55c73d60ef407c653844e6f9a1e2fdbd40c07b9252d812"
"checksum paste 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "f50392d1265092fbee9273414cc40eb6d47d307bd66222c477bb8450c8504f9d"

2
hello_gradient/Cargo.toml
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@ -11,4 +11,4 @@ debug = true
[dependencies]
lights = { path = "../lights" }
lights_hal = { path = "../gemma_m0_lights", package = "gemma_m0_lights" }
lights_hal = { path = "../itsybitsy_m0_lights", package = "itsybitsy_m0_lights" }

12
itsybitsy_m0_lights/Cargo.toml Normal file
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@ -0,0 +1,12 @@
[package]
name = "itsybitsy_m0_lights"
version = "0.1.0"
authors = ["Tangent 128 <Tangent128@gmail.com>"]
edition = "2018"
[dependencies]
cortex-m = { version = "0.5.8", features = ["inline-asm"] }
embedded-hal = "0.2.2"
itsybitsy_m0 = "0.2.1"
lights = { path = "../lights" }
panic-halt = "0.2"

83
itsybitsy_m0_lights/src/lib.rs Normal file
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@ -0,0 +1,83 @@
#![no_std]
extern crate cortex_m;
extern crate embedded_hal;
extern crate itsybitsy_m0 as hal;
extern crate panic_halt;
pub use cortex_m::asm::delay;
pub use hal::entry;
use core::u8;
use embedded_hal::digital::OutputPin;
use hal::{
clock::GenericClockController,
Peripherals
};
use lights::{
HardwareRgb,
Lights
};
pub fn boot() -> impl Lights<Pixel = HardwareRgb> {
let mut peripherals = Peripherals::take().unwrap();
let _clock = GenericClockController::with_internal_32kosc(
peripherals.GCLK,
&mut peripherals.PM,
&mut peripherals.SYSCTRL,
&mut peripherals.NVMCTRL
);
let mut pins = hal::Pins::new(peripherals.PORT);
NeopixelLights {
out: pins.d7.into_push_pull_output(&mut pins.port)
}
}
// approx. 20ns per clock cycle;
const ZERO_HIGH_CYCLES: u32 = 11; // smidge above 200ns
const ONE_HIGH_CYCLES: u32 = 35; // about 700ns
const DATA_LOW_CYCLES: u32 = 25; // about 500ns
const LATCH_CYCLES: u32 = 300; // about 6000ns
pub struct NeopixelLights<T: OutputPin> {
out: T
}
impl<T: OutputPin> NeopixelLights<T> {
#[inline]
fn write(&mut self, bit: bool) {
self.out.set_high();
delay(if bit { ONE_HIGH_CYCLES } else { ZERO_HIGH_CYCLES });
self.out.set_low();
delay(DATA_LOW_CYCLES);
}
#[inline]
fn byte(&mut self, byte: u8) {
self.write(byte & 0x80 != 0);
self.write(byte & 0x40 != 0);
self.write(byte & 0x20 != 0);
self.write(byte & 0x10 != 0);
self.write(byte & 0x08 != 0);
self.write(byte & 0x04 != 0);
self.write(byte & 0x02 != 0);
self.write(byte & 0x01 != 0);
}
}
impl<T: OutputPin> Lights for NeopixelLights<T> {
type Pixel = HardwareRgb;
#[inline]
fn render(&mut self, rgb: &HardwareRgb) {
// GRB pixel order
self.byte(rgb.1);
self.byte(rgb.0);
self.byte(rgb.2);
}
fn latch(&mut self) {
delay(LATCH_CYCLES);
}
}