src: implement first iteration of a naive smart-leds display

src/main.rs

@@ -1,6 +1,5 @@
 #![feature(trait_upcasting)]
 #![allow(arithmetic_overflow)]
-use esp_idf_svc::hal::prelude::Peripherals;
 use ws2812_esp32_rmt_driver::lib_embedded_graphics::{LedPixelShape, Ws2812DrawTarget};
 use embedded_graphics::{
     prelude::*,
@@ -8,6 +7,12 @@ use embedded_graphics::{
 use palette::Hsv;
 use palette::convert::IntoColorUnclamped;
 
+use esp_idf_svc::hal::{
+    prelude::*,
+    spi::{config::{Config, DriverConfig}, Dma, SpiDriver, SpiBusDriver},
+    gpio::AnyIOPin,
+};
+
 mod power;
 mod lib8;
 mod render;
@@ -15,13 +20,19 @@ mod task;
 mod time;
 mod geometry;
 mod embedded_graphics_lib;
+mod smart_leds_lib;
 
 use crate::time::Periodically;
 use crate::geometry::{Coordinates, VirtualCoordinates};
 use crate::embedded_graphics_lib::EmbeddedDisplay;
+use crate::smart_leds_lib::SmartLedDisplay;
 use crate::render::{Surfaces, Surface, SimpleSurface, Display};
 use crate::task::Task;
 
+use ws2812_spi::Ws2812;
+use smart_leds_trait::SmartLedsWrite;
+use esp_idf_svc::hal::units::MegaHertz;
+
 struct IdleTask<T: Surface> {
     frame: u8,
     surface: T,
@@ -104,6 +115,31 @@ impl<Shape: LedPixelShape> DisplayInit for Ws2812DrawTarget<'_, Shape> {
     }
 }
 
+struct SPIDisplay {}
+
+impl DisplayInit for SPIDisplay {
+    fn new_display<S: Surface>() -> impl Display<S> + Task {
+        let peripherals = Peripherals::take().unwrap();
+
+        let driver = SpiDriver::new_without_sclk(
+            peripherals.spi2,
+            peripherals.pins.gpio14,
+            Option::<AnyIOPin>::None,
+            &DriverConfig::new().dma(Dma::Auto(512))
+        ).unwrap();
+
+        let cfg = Config::new().baudrate(3_200.kHz().into());
+
+        let spi = SpiBusDriver::new(driver, &cfg).unwrap();
+
+        const POWER_VOLTS : u32 = 5;
+        const POWER_MA : u32 = 500;
+        const MAX_POWER_MW : u32 = POWER_VOLTS * POWER_MA;
+        let target = Ws2812::new(spi);
+        return SmartLedDisplay::new(target, MAX_POWER_MW)
+    }
+}
+
 fn main() {
     // It is necessary to call this function once. Otherwise some patches to the runtime
     // implemented by esp-idf-sys might not link properly. See https://github.com/esp-rs/esp-idf-template/issues/71
@@ -113,6 +149,7 @@ fn main() {
     esp_idf_svc::log::EspLogger::initialize_default();
 
     log::info!("Setting up display");
+    //let mut display = SPIDisplay::new_display::<SimpleSurface>();
     let mut display = PonderjarTarget::new_display::<SimpleSurface>();
 
     log::info!("Creating runner");