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Create a small application that controls a dotstar from a raspberry pi pico #254

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savanni merged 5 commits from halloween__lights into main 2024-11-04 03:48:46 +00:00
Conversation 0 Commits 5 Files Changed 5 +20 -32
1 changed files with 20 additions and 32 deletions
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52
halloween-leds/src/main.rs
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@ -1,8 +1,8 @@
#![no_main]
#![no_std]
use embedded_hal::{delay::DelayNs, digital::OutputPin};
use embedded_hal::spi::SpiBus;
use embedded_hal::{delay::DelayNs, digital::OutputPin};
use panic_halt as _;
use rp_pico::hal::gpio::bank0::Gpio0;
use rp_pico::{
@ -21,6 +21,8 @@ use rp_pico::{
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]
@ -46,8 +48,6 @@ unsafe fn main() -> ! {
.ok()
.unwrap();
// let mut power_light: Pin<Gpio0, FunctionSio<SioOutput>, PullDown> = pins.gpio0.into_function();
// power_light.set_high();
let mut timer = Timer::new(peripherals.TIMER, &mut peripherals.RESETS, &clocks);
let spi_clk = pins.gpio10.into_function();
@ -60,44 +60,32 @@ unsafe fn main() -> ! {
embedded_hal::spi::MODE_1,
);
let mut lights: [u8; 126] = [0; 126];
lights[124] = 0xff;
lights[125] = 0xff;
for i in 0..30 {
lights[(i + 1) * 4 + 0] = 0xe0 + 1;
lights[(i + 1) * 4 + 1] = 255;
}
// 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];
lights[8] = 0xff;
lights[9] = 0xff;
lights[10] = 0xff;
lights[11] = 0xff;
lights[4] = 0xe0 + 1;
let mut brightness = 1;
let mut step = 1;
loop {
if brightness == 255 && step == 1 {
if brightness == 64 && step == 1 {
step = -1;
} else if brightness == 1 && step == -1 {
step = 1;
};
for i in 0..30 {
lights[(i + 1) * 4 + 3] = brightness as u8;
}
lights[5] = brightness as u8;
lights[6] = 255;
// lights[7] = brightness as u8;
brightness = brightness + step;
spi.write(lights.as_slice());
timer.delay_ms(10);
timer.delay_ms(MS_PER_FRAME);
}
/*
let pins = (pins.gpio0.into_function(), pins.gpio1.into_function());
let uart = UartPeripheral::new(peripherals.UART0, pins, &mut peripherals.RESETS)
.enable(
UartConfig::new(9600_u32.Hz(), DataBits::Eight, None, StopBits::One),
clocks.peripheral_clock.freq(),
)
.unwrap();
loop {
uart.write_full_blocking(b"Hello World!\r\n");
timer.delay_ms(1000);
}
*/
}