2472e36232
* Teach `xtask` about the `qa-test` package * Create the `qa-test` package and move some examples to it * Check `qa-test` package in CI * Add `README.md`
108 lines
2.8 KiB
Rust
108 lines
2.8 KiB
Rust
//! I2C Display example
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//!
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//! This example prints some text on an SSD1306-based
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//! display (via I2C)
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//!
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//! The following wiring is assumed:
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//! - SDA => GPIO4
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//! - SCL => GPIO5
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//% CHIPS: esp32 esp32c2 esp32c3 esp32c6 esp32h2 esp32s2 esp32s3
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#![no_std]
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#![no_main]
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use embedded_graphics::{
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mono_font::{
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ascii::{FONT_6X10, FONT_9X18_BOLD},
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MonoTextStyleBuilder,
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},
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pixelcolor::BinaryColor,
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prelude::*,
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text::{Alignment, Text},
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};
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use esp_backtrace as _;
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use esp_hal::{
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delay::Delay,
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i2c::master::{Config, I2c},
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prelude::*,
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};
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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 peripherals = esp_hal::init(esp_hal::Config::default());
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let delay = Delay::new();
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// Create a new peripheral object with the described wiring
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// and standard I2C clock speed
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let i2c = I2c::new(peripherals.I2C0, Config::default())
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.with_sda(peripherals.GPIO4)
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.with_scl(peripherals.GPIO5);
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// Initialize display
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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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// Specify different text styles
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let text_style = MonoTextStyleBuilder::new()
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.font(&FONT_6X10)
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.text_color(BinaryColor::On)
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.build();
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let text_style_big = MonoTextStyleBuilder::new()
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.font(&FONT_9X18_BOLD)
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.text_color(BinaryColor::On)
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.build();
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loop {
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// Fill display buffer with a centered text with two lines (and two text
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// styles)
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Text::with_alignment(
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"esp-hal",
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display.bounding_box().center() + Point::new(0, 0),
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text_style_big,
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Alignment::Center,
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)
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.draw(&mut display)
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.unwrap();
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Text::with_alignment(
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"Chip: ESP32S3",
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display.bounding_box().center() + Point::new(0, 14),
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text_style,
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Alignment::Center,
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)
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.draw(&mut display)
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.unwrap();
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// Write buffer to display
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display.flush().unwrap();
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// Clear display buffer
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display.clear(BinaryColor::Off).unwrap();
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// Wait 5 seconds
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delay.delay(5.secs());
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// Write single-line centered text "Hello World" to buffer
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Text::with_alignment(
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"Hello World!",
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display.bounding_box().center(),
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text_style_big,
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Alignment::Center,
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)
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.draw(&mut display)
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.unwrap();
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// Write buffer to display
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display.flush().unwrap();
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// Clear display buffer
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display.clear(BinaryColor::Off).unwrap();
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// Wait 5 seconds
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delay.delay(5.secs());
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}
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}
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