finga
518f113cc0
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ci/woodpecker/push/woodpecker Pipeline was successful
Use the `avr-eeprom` crate when reading from EEPROM.
208 lines
7.1 KiB
Rust
208 lines
7.1 KiB
Rust
#![no_std]
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#![no_main]
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use atmega_hal::{
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clock::MHz8,
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delay::Delay,
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pins,
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port::{mode::Output, Pin, PB0},
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spi::{DataOrder, SerialClockRate, Settings, Spi},
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Peripherals,
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};
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use avr_device::interrupt;
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use avr_eeprom::{eeprom, Eeprom};
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use embedded_hal::{
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blocking::delay::DelayMs,
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spi::{FullDuplex, Mode, Phase, Polarity},
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};
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use nb::block;
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use panic_halt as _;
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eeprom! {
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static eeprom CONTRAST: u8 = 8;
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static eeprom BACKLIGHT: u8 = 1;
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}
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// TODO: Use https://github.com/rust-lang/rust/issues/85077 when stabilized
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const SACRED_CHAO: [[u8; 40]; 5] = [
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[
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0x00, 0x00, 0x00, 0x00, 0x80, 0xC0, 0xE0, 0xF0, 0xF0, 0xF8, 0xFC, 0xFC, 0xFE, 0xFE, 0xFE,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFE, 0xFE, 0xFC, 0xFC,
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0xF8, 0xF0, 0xF0, 0xE0, 0xC0, 0x80, 0x00, 0x00, 0x00, 0x00,
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],
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[
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0x80, 0xF0, 0xFC, 0xFE, 0xFF, 0xFF, 0x7F, 0x3F, 0x1F, 0x3F, 0x3F, 0x7F, 0x7F, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x1F, 0x0F, 0x0F, 0x07, 0x07, 0x07, 0x03, 0xC3,
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0xE3, 0x73, 0x37, 0x17, 0x07, 0x0F, 0x1E, 0x3C, 0xF0, 0x80,
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],
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[
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0xFF, 0xFF, 0xFF, 0xE7, 0xC3, 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0x0F, 0x00, 0x00, 0xFC, 0xFE, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFC, 0x30, 0x00, 0x00, 0xFF,
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],
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[
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0x01, 0x0F, 0x3F, 0x4F, 0x9F, 0x3F, 0x3E, 0x3C, 0x7C, 0x7C, 0x7C, 0x7C, 0x3E, 0x3E, 0x3E,
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0x1F, 0x1F, 0x0F, 0x07, 0x01, 0x00, 0x00, 0x00, 0x01, 0x03, 0x07, 0x07, 0x0F, 0x0F, 0x0F,
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0x0F, 0x0F, 0x07, 0x07, 0x03, 0x81, 0x40, 0x30, 0x0E, 0x01,
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],
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[
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0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x04, 0x08, 0x08, 0x10, 0x20, 0x20, 0x40, 0x40, 0x40,
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0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x40, 0x40, 0x40, 0x20, 0x20,
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0x10, 0x08, 0x08, 0x04, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00,
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],
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];
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// TODO: Use https://github.com/rust-lang/rust/issues/85077 when stabilized
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const ONDERS_ORG: [[u8; 48]; 2] = [
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[
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0xE0, 0x60, 0xE0, 0x00, 0x00, 0xE0, 0x60, 0xE0, 0x00, 0x00, 0xE0, 0x60, 0xF8, 0x00, 0x00,
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0xE0, 0xA0, 0xE0, 0x00, 0x00, 0xE0, 0x20, 0x60, 0x00, 0x00, 0xE0, 0xA0, 0xA0, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0x60, 0xE0, 0x00, 0x00, 0xE0, 0x20, 0x60, 0x00, 0x00,
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0xE0, 0x60, 0xE0,
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],
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[
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0x03, 0x02, 0x03, 0x00, 0x00, 0x03, 0x00, 0x03, 0x00, 0x00, 0x03, 0x02, 0x03, 0x00, 0x00,
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0x03, 0x02, 0x02, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x02, 0x02, 0x03, 0x00, 0x00,
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0x00, 0x02, 0x00, 0x00, 0x00, 0x03, 0x02, 0x03, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00,
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0x0B, 0x0A, 0x0F,
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],
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];
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fn clear_screen(spi: &mut Spi, cd: &mut Pin<Output, PB0>) {
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let mut delay = Delay::<MHz8>::new();
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for page in 0..8 {
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block!(spi.send(0x00)).unwrap();
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block!(spi.send(0x10)).unwrap();
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block!(spi.send(0xB0 + page)).unwrap();
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// TODO: This delay fixes issues, try find a better solution
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delay.delay_ms(1_u8);
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cd.set_high();
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for _ in 0..102 {
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block!(spi.send(0x00)).unwrap();
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}
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// TODO: This delay fixes issues, try find a better solution
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delay.delay_ms(1_u8);
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cd.set_low();
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}
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}
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fn draw_splash(spi: &mut Spi, cd: &mut Pin<Output, PB0>) {
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clear_screen(spi, cd);
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let mut delay = Delay::<MHz8>::new();
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for (i, page) in SACRED_CHAO.iter().enumerate() {
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block!(spi.send(0x0F)).unwrap();
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block!(spi.send(0x11)).unwrap();
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block!(spi.send(0xB1 + i as u8)).unwrap();
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// TODO: This delay fixes issues, try find a better solution
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delay.delay_ms(1_u8);
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cd.set_high();
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for segment in page {
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block!(spi.send(*segment)).unwrap();
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}
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// TODO: This delay fixes issues, try find a better solution
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delay.delay_ms(1_u8);
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cd.set_low();
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}
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for (i, page) in ONDERS_ORG.iter().enumerate() {
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block!(spi.send(0x0A)).unwrap();
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block!(spi.send(0x11)).unwrap();
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block!(spi.send(0xB6 + i as u8)).unwrap();
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// TODO: This delay fixes issues, try find a better solution
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delay.delay_ms(1_u8);
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cd.set_high();
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for segment in page {
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block!(spi.send(*segment)).unwrap();
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}
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// TODO: This delay fixes issues, try find a better solution
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delay.delay_ms(1_u8);
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cd.set_low();
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}
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}
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#[atmega_hal::entry]
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fn main() -> ! {
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interrupt::free(|_cs| {
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// Get peripherals, pins, eeprom and delay
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let dp = Peripherals::take().unwrap();
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let pins = pins!(dp);
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let eeprom = Eeprom::new(dp.EEPROM);
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let mut delay = Delay::<MHz8>::new();
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// Get contrast and backlight from EEPROM
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let contrast = eeprom.read_value(&CONTRAST);
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let backlight = eeprom.read_value(&BACKLIGHT);
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// Init display backlight
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let tc0 = dp.TC0;
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tc0.tccr0a.write(|w| {
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w.wgm0().pwm_fast();
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w.com0b().match_clear();
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w
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});
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tc0.tccr0b.write(|w| {
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w.wgm02().set_bit();
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w.cs0().prescale_64();
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w
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});
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tc0.ocr0a.write(|w| unsafe { w.bits(255) });
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tc0.ocr0b.write(|w| unsafe { w.bits(backlight) });
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pins.pd5.into_output();
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// Init SPI
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let (mut spi, _) = Spi::new(
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dp.SPI,
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pins.pb5.into_output(),
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pins.pb3.into_output(),
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pins.pb4.into_pull_up_input(),
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pins.pb2.into_output(),
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Settings {
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data_order: DataOrder::MostSignificantFirst,
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clock: SerialClockRate::OscfOver2,
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mode: Mode {
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polarity: Polarity::IdleLow,
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phase: Phase::CaptureOnFirstTransition,
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},
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},
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);
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// Init LCD
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let mut lcd_cd = pins.pb0.into_output();
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let mut lcd_rst = pins.pb1.into_output();
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// TODO: Test if delay is really needed
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delay.delay_ms(1_u8);
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lcd_rst.set_high();
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// TODO: Try to reduce delay to a minimum
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delay.delay_ms(5_u8);
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block!(spi.send(0x40)).unwrap(); // (6) Set Scroll Line: Display start line 0
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block!(spi.send(0xA1)).unwrap(); // (13) Set SEG direction: SEG reverse
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block!(spi.send(0xC0)).unwrap(); // (14) Set COM direction: Normal COM0 - COM63
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block!(spi.send(0xA6)).unwrap(); // (11) Set Inverse Display: Display inverse off
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block!(spi.send(0xA2)).unwrap(); // (17) Set LCD Bias Ratio: Set Bias 1/9 (Duty 1/65)
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block!(spi.send(0x2F)).unwrap(); // (5) Set Power Control: Booster, Regulator and Follower on
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block!(spi.send(0x27)).unwrap(); // (8) Set VLCD Resistor Ratio: Set Contrast
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block!(spi.send(0x81)).unwrap(); // (9) Set Electronic Volume: Set Contrast
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block!(spi.send(contrast)).unwrap(); // (9) Set Electronic Volume: Set Contrast
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block!(spi.send(0xAF)).unwrap(); // (12) Set Display Enable: Display on
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// Draw splash screen
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draw_splash(&mut spi, &mut lcd_cd);
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});
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#[allow(clippy::empty_loop)]
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loop {}
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}
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