firmware for my Touchscreen E-Paper Input Module for Framework Laptop 16
1#![no_std]
2
3use core::fmt::{Display, Formatter};
4pub use tp370pgh01::IMAGE_BYTES;
5
6/// Option type with stable ABI.
7#[repr(C)]
8pub enum SafeOption<T> {
9 None,
10 Some(T),
11}
12
13impl<T> From<Option<T>> for SafeOption<T> {
14 fn from(value: Option<T>) -> Self {
15 match value {
16 None => SafeOption::None,
17 Some(v) => SafeOption::Some(v),
18 }
19 }
20}
21
22impl<T> From<SafeOption<T>> for Option<T> {
23 fn from(value: SafeOption<T>) -> Self {
24 match value {
25 SafeOption::None => None,
26 SafeOption::Some(v) => Some(v),
27 }
28 }
29}
30
31#[repr(C)]
32pub enum RefreshBlockMode {
33 NonBlocking,
34 BlockAcknowledge,
35 BlockFinish,
36}
37
38#[repr(C)]
39#[derive(Copy, Clone)]
40pub struct ProgramFunctionTable {
41 pub write_image: extern "C" fn(&[u8; IMAGE_BYTES]),
42 pub refresh: extern "C" fn(bool, RefreshBlockMode),
43 pub next_event: extern "C" fn() -> SafeOption<Event>,
44 pub set_touch_enabled: unsafe extern "C" fn(bool),
45 pub serial_number: extern "C" fn() -> &'static [u8; 16]
46}
47
48impl ProgramFunctionTable {
49 pub fn serial_number_str(&self) -> &'static str {
50 unsafe { core::str::from_utf8_unchecked((self.serial_number)()) }
51 }
52}
53
54#[repr(C)]
55#[derive(Copy, Clone, Debug, Eq, PartialEq, defmt::Format)]
56pub enum Event {
57 Null,
58 Touch(TouchEvent),
59 RefreshFinished,
60}
61
62#[repr(u8)]
63#[derive(Copy, Clone, Debug, Eq, PartialEq, defmt::Format)]
64pub enum TouchEventType {
65 Down,
66 Up,
67 Move,
68}
69
70#[repr(C)]
71#[derive(Copy, Clone, Debug, Eq, PartialEq, defmt::Format)]
72pub struct TouchEvent {
73 pub ev_type: TouchEventType,
74 pub x: u16,
75 pub y: u16,
76}
77
78impl TouchEvent {
79 pub const fn new() -> Self {
80 Self {
81 ev_type: TouchEventType::Down,
82 x: u16::MAX,
83 y: u16::MAX,
84 }
85 }
86
87 #[cfg(feature = "embedded-graphics")]
88 pub fn eg_point(&self) -> embedded_graphics::prelude::Point {
89 embedded_graphics::prelude::Point::new(self.x as i32, self.y as i32)
90 }
91}
92
93impl Display for TouchEvent {
94 fn fmt(&self, f: &mut Formatter<'_>) -> core::fmt::Result {
95 let ty = match self.ev_type {
96 TouchEventType::Down => "Down",
97 TouchEventType::Up => "Up",
98 TouchEventType::Move => "Move",
99 };
100 write!(f, "{ty} @ ({}, {})", self.x, self.y)
101 }
102}