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fw-rust: Create a print u8 function for setup
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Create `print_u8()` helper function to print `u8` primitives to
lcd. Refactor contrast and backlight variables to also keep them in a
global `AtomicU8`.
This commit is contained in:
finga 2022-03-19 18:40:18 +01:00
parent c2920ea334
commit 7d8f5f6870
3 changed files with 55 additions and 14 deletions
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17
firmware/rust/src/main.rs
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@ -11,7 +11,7 @@ use atmega_hal::{
};
use avr_device::interrupt;
use avr_eeprom::{eeprom, Eeprom};
use core::sync::atomic::{AtomicBool, Ordering};
use core::sync::atomic::{AtomicBool, AtomicU8, Ordering};
use embedded_hal::{
blocking::delay::DelayMs,
spi::{Mode, Phase, Polarity},
@ -28,8 +28,8 @@ use rotary::{Direction, Rotary};
use screen::Screens;
eeprom! {
static eeprom CONTRAST: u8 = 8;
static eeprom BACKLIGHT: u8 = 1;
static eeprom EEPROM_CONTRAST: u8 = 8;
static eeprom EEPROM_BACKLIGHT: u8 = 1;
}
pub enum Input {
@ -42,6 +42,8 @@ pub enum Input {
static UPDATE_ENCODER: AtomicBool = AtomicBool::new(false);
static UPDATE_BUTTON: AtomicBool = AtomicBool::new(false);
static UPDATE_TIMER: AtomicBool = AtomicBool::new(false);
static CONTRAST: AtomicU8 = AtomicU8::new(0);
static BACKLIGHT: AtomicU8 = AtomicU8::new(0);
#[interrupt(atmega328p)]
#[allow(non_snake_case)]
@ -76,8 +78,8 @@ fn main() -> ! {
let mut delay = Delay::<MHz8>::new();
// Get contrast and backlight from EEPROM
let contrast = eeprom.read_value(&CONTRAST);
let backlight = eeprom.read_value(&BACKLIGHT);
CONTRAST.store(eeprom.read_value(&EEPROM_CONTRAST), Ordering::SeqCst);
BACKLIGHT.store(eeprom.read_value(&EEPROM_BACKLIGHT), Ordering::SeqCst);
// Init display backlight
let tc0 = dp.TC0;
@ -92,7 +94,8 @@ fn main() -> ! {
w
});
tc0.ocr0a.write(|w| unsafe { w.bits(255) });
tc0.ocr0b.write(|w| unsafe { w.bits(backlight) });
tc0.ocr0b
.write(|w| unsafe { w.bits(BACKLIGHT.load(Ordering::SeqCst)) });
pins.pd5.into_output();
// Init SPI
@ -114,7 +117,7 @@ fn main() -> ! {
// Init LCD
let mut lcd = Lcd::new(spi, pins.pb0.into_output(), pins.pb1.into_output());
lcd.init(contrast);
lcd.init(CONTRAST.load(Ordering::SeqCst));
// Init encoder
let mut encoder = Rotary::new(pins.pb6.into_pull_up_input(), pins.pb7.into_pull_up_input());