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