swaitsandClaude Opus 4.6
3102fc747a
Implement full SSD1306 OLED display support: - Splash screen on boot (1.5s) with project name, version, board - Dashboard showing radio state, config, counters, RSSI/SNR - RSSI history sparkline (64-sample ring buffer, 2px-wide bars) - DisplayOn/DisplayOff host commands routed via dedicated channel - Pure render functions against generic DrawTarget (no hardware coupling) - Display on/off control bypasses radio task entirely Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
88 lines
2.1 KiB
Rust
88 lines
2.1 KiB
Rust
//! Draw a 1 bit per pixel black and white image. On a 128x64 SSD1306 display over I2C.
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//!
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//! Image was created with ImageMagick:
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//!
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//! ```bash
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//! convert rust.png -depth 1 gray:rust.raw
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//! ```
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//!
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//! This example is for the STM32F103 "Blue Pill" board using I2C1.
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//!
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//! Wiring connections are as follows for a CRIUS-branded display:
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//!
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//! ```
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//! Display -> Blue Pill
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//! (black) GND -> GND
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//! (red) +5V -> VCC
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//! (yellow) SDA -> PB7
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//! (green) SCL -> PB6
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//! ```
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//!
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//! Run on a Blue Pill with `cargo run --example image_i2c`.
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#![no_std]
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#![no_main]
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use cortex_m::asm::nop;
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use cortex_m_rt::entry;
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use defmt_rtt as _;
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#[cfg(feature = "async")]
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use embassy_stm32::{bind_interrupts, i2c, peripherals};
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use embassy_stm32::time::Hertz;
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use embedded_graphics::{
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image::{Image, ImageRaw},
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pixelcolor::BinaryColor,
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prelude::*,
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};
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use panic_probe as _;
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use ssd1306::{prelude::*, I2CDisplayInterface, Ssd1306};
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#[entry]
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fn main() -> ! {
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let p = embassy_stm32::init(Default::default());
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#[cfg(feature = "async")]
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bind_interrupts!(struct Irqs {
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I2C1_EV => i2c::EventInterruptHandler<peripherals::I2C1>;
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I2C1_ER => i2c::ErrorInterruptHandler<peripherals::I2C1>;
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});
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#[cfg(feature = "async")]
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let i2c = embassy_stm32::i2c::I2c::new(
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p.I2C1,
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p.PB6,
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p.PB7,
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Irqs,
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p.DMA1_CH6,
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p.DMA1_CH7,
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Hertz::khz(400),
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Default::default(),
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);
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#[cfg(not(feature = "async"))]
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let i2c = embassy_stm32::i2c::I2c::new_blocking(
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p.I2C1,
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p.PB6,
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p.PB7,
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Hertz::khz(400),
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Default::default(),
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);
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let interface = I2CDisplayInterface::new(i2c);
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let mut display = Ssd1306::new(interface, DisplaySize128x64, DisplayRotation::Rotate0)
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.into_buffered_graphics_mode();
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display.init().unwrap();
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let raw: ImageRaw<BinaryColor> = ImageRaw::new(include_bytes!("./rust.raw"), 64);
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let im = Image::new(&raw, Point::new(32, 0));
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im.draw(&mut display).unwrap();
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display.flush().unwrap();
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loop {
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nop()
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}
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}
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