forked from bosmoment/PineTime-apps
-
Notifications
You must be signed in to change notification settings - Fork 11
/
watch_face.rs
286 lines (263 loc) · 11.7 KB
/
watch_face.rs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
//! Watch Face in Rust, RIOT and LVGL for PineTime Smart Watch. Ported from https://github.com/bosmoment/PineTime-apps/blob/master/widgets/home_time/screen_time.c
use core::{
fmt::Write,
ptr,
};
use lvgl::{
result::*,
core::obj,
objx::label,
Strn,
};
use lvgl_macros::strn;
/// Create the widgets for the Watch Face. Called by create_watch_face() below.
pub fn create_widgets(widgets: &mut WatchFaceWidgets) -> LvglResult<()> {
let scr = widgets.screen;
assert!(!scr.is_null(), "null screen");
// Create a label for time (00:00)
let label1 = label::create(scr, ptr::null()) ? ; // `?` will terminate the function in case of error
label::set_long_mode(label1, label::LV_LABEL_LONG_BREAK) ? ;
label::set_text(label1, strn!("00:00")) ? ; // strn creates a null-terminated string
obj::set_width(label1, 240) ? ;
obj::set_height(label1, 200) ? ;
label::set_align(label1, label::LV_LABEL_ALIGN_CENTER) ? ;
obj::align(label1, scr, obj::LV_ALIGN_CENTER, 0, -30) ? ;
#[cfg(not(target_arch = "wasm32"))] // TODO: obj::set_style doesn't work for WebAssembly Simulator
obj::set_style(label1, unsafe { &style_time }) ? ; // Previously: label::set_style
widgets.time_label = label1;
// Create a label for Bluetooth state
let l_state = label::create(scr, ptr::null()) ? ;
obj::set_width(l_state, 50) ? ;
obj::set_height(l_state, 80) ? ;
label::set_text(l_state, strn!("")) ? ; // strn creates a null-terminated string
label::set_recolor(l_state, true) ? ;
label::set_align(l_state, label::LV_LABEL_ALIGN_LEFT) ? ;
obj::align(l_state, scr, obj::LV_ALIGN_IN_TOP_LEFT, 0, 0) ? ;
widgets.ble_label = l_state;
// Create a label for Power indicator
let l_power = label::create(scr, ptr::null()) ? ;
obj::set_width(l_power, 80) ? ;
obj::set_height(l_power, 20) ? ;
label::set_text(l_power, strn!("")) ? ; // strn creates a null-terminated string
label::set_recolor(l_power, true) ? ;
label::set_align(l_power, label::LV_LABEL_ALIGN_RIGHT) ? ;
obj::align(l_power, scr, obj::LV_ALIGN_IN_TOP_RIGHT, 0, 0) ? ;
widgets.power_label = l_power;
// Create a label for Date
let label_date = label::create(scr, ptr::null()) ? ;
label::set_long_mode(label_date, label::LV_LABEL_LONG_BREAK) ? ;
obj::set_width(label_date, 200) ? ;
obj::set_height(label_date, 200) ? ;
label::set_text(label_date, strn!("")) ? ; // strn creates a null-terminated string
label::set_align(label_date, label::LV_LABEL_ALIGN_CENTER) ? ;
obj::align(label_date, scr, obj::LV_ALIGN_CENTER, 0, 40) ? ;
widgets.date_label = label_date;
// Allow touch events
obj::set_click(scr, true) ? ;
Ok(())
}
/// Update the widgets in the Watch Face with the current state. Called by update_watch_face() below.
pub fn update_widgets(widgets: &WatchFaceWidgets, state: &WatchFaceState) -> LvglResult<()> {
set_time_label(widgets, state) ? ;
set_bt_label(widgets, state) ? ;
set_power_label(widgets, state) ? ;
Ok(())
}
/// Populate the Bluetooth Label with the Bluetooth status. Called by screen_time_update_screen() above.
pub fn set_bt_label(widgets: &WatchFaceWidgets, state: &WatchFaceState) -> LvglResult<()> {
if state.ble_state == BleState::BLEMAN_BLE_STATE_DISCONNECTED {
label::set_text(
widgets.ble_label,
strn!("")
) ? ;
} else {
// Get the color of the Bluetooth icon
let color =
match &state.ble_state {
BleState::BLEMAN_BLE_STATE_INACTIVE => "#000000", // Black
BleState::BLEMAN_BLE_STATE_DISCONNECTED => "#f2495c", // GUI_COLOR_LBL_BASIC_RED
BleState::BLEMAN_BLE_STATE_ADVERTISING => "#5794f2", // GUI_COLOR_LBL_BASIC_BLUE
BleState::BLEMAN_BLE_STATE_CONNECTED => "#37872d", // GUI_COLOR_LBL_DARK_GREEN
};
// Create a string buffer to format the Bluetooth status
static mut BLUETOOTH_STATUS: String = new_string();
// Format the Bluetooth status and set the label
unsafe { // Unsafe because BLUETOOTH_STATUS is a mutable static
BLUETOOTH_STATUS.clear();
write!(
&mut BLUETOOTH_STATUS,
"{} \u{F293}#\0", // LV_SYMBOL_BLUETOOTH. Must terminate Rust strings with null.
color
).expect("bt fail");
label::set_text(
widgets.ble_label,
&to_strn(&BLUETOOTH_STATUS)
) ? ;
}
}
Ok(())
}
/// Populate the Power Label with the battery status. Called by screen_time_update_screen() above.
pub fn set_power_label(widgets: &WatchFaceWidgets, state: &WatchFaceState) -> LvglResult<()> {
let percentage = unsafe { hal_battery_get_percentage(state.millivolts) };
let color = // Charging color
if percentage <= 20 // battery_low
{ "#f2495c" } // battery_low_color
else if state.powered && !(state.charging)
{ "#73bf69" } // battery_full_color: Battery charge cycle finished
else
{ "#fade2a" }; // battery_mid_color
let symbol = // Charging symbol
if state.powered { "\u{F0E7}" } // LV_SYMBOL_CHARGE
else { " " };
// Create a string buffer to format the battery status
static mut BATTERY_STATUS: String = new_string();
// Format the battery status and set the label
unsafe { // Unsafe because BATTERY_STATUS is a mutable static
BATTERY_STATUS.clear();
write!(
&mut BATTERY_STATUS,
"{} {}%{}#\nRUST ({}mV)\0", // Must terminate Rust strings with null
color,
percentage,
symbol,
state.millivolts
).expect("batt fail");
label::set_text(
widgets.power_label,
&to_strn(&BATTERY_STATUS)
) ? ;
}
obj::align(
widgets.power_label, widgets.screen,
obj::LV_ALIGN_IN_TOP_RIGHT, 0, 0
) ? ;
Ok(())
}
/// Populate the Time and Date Labels with the time and date. Called by screen_time_update_screen() above.
pub fn set_time_label(widgets: &WatchFaceWidgets, state: &WatchFaceState) -> LvglResult<()> {
// Create a string buffer to format the time
static mut TIME_BUF: String = new_string();
// Format the time and set the label
unsafe { // Unsafe because TIME_BUF is a mutable static
TIME_BUF.clear();
write!(
&mut TIME_BUF,
"{:02}:{:02}\0", // Must terminate Rust strings with null
state.time.hour,
state.time.minute
).expect("time fail");
label::set_text(
widgets.time_label,
&to_strn(&TIME_BUF)
) ? ;
}
// Get the short month name
let month_cstr = unsafe { controller_time_month_get_short_name(&state.time) }; // Returns null-terminated C string
assert!(!month_cstr.is_null(), "month null");
let month_str = unsafe { cstr_core::CStr::from_ptr(month_cstr).to_str() } // Convert C string to Rust string
.expect("month fail");
// Create a string buffer to format the date
static mut DATE_BUF: String = new_string();
// Format the date and set the label
unsafe { // Unsafe because DATE_BUF is a mutable static
DATE_BUF.clear();
write!(
&mut DATE_BUF,
"{} {} {}\n\0", // Must terminate Rust strings with null
state.time.dayofmonth,
month_str,
state.time.year
).expect("date fail");
label::set_text(
widgets.date_label,
&to_strn(&DATE_BUF)
) ? ;
}
Ok(())
}
/// Create the Watch Face, populated with widgets. Called by _screen_time_create() in screen_time.c.
#[no_mangle] // Don't mangle the function name
extern "C" fn create_watch_face(widgets: *mut WatchFaceWidgets) -> i32 { // Declare extern "C" because it will be called by RIOT OS firmware
assert!(!widgets.is_null(), "widgets null");
unsafe { create_widgets(&mut *widgets) }
.expect("create_screen fail");
0 // Return OK
}
/// Populate the Watch Face with the current status. Called by _screen_time_update_screen() in screen_time.c.
#[no_mangle] // Don't mangle the function name
extern "C" fn update_watch_face(widgets: *const WatchFaceWidgets, state: *const WatchFaceState) -> i32 {
assert!(!widgets.is_null(), "widgets null");
unsafe { update_widgets(&*widgets, &*state) }
.expect("update_widgets fail");
0 // Return OK
}
/// Create a new String
const fn new_string() -> String {
heapless::String(heapless::i::String::new())
}
/// Convert a static String to null-terminated Strn
fn to_strn(str: &'static String) -> Strn {
Strn::new(str.as_bytes())
}
/// Limit Strings to 64 chars (which may include multiple color codes like "#ffffff")
type String = heapless::String::<heapless::consts::U64>;
/// State for the Watch Face, shared between GUI and control. TODO: Sync with widgets/home_time/include/home_time.h
#[repr(C)]
pub struct WatchFaceState {
pub ble_state: BleState, // bleman_ble_state_t
pub time: controller_time_spec_t,
pub millivolts: u32,
pub charging: bool,
pub powered: bool,
}
/// Widgets for the Watch Face, private to Rust. TODO: Sync with widgets/home_time/include/home_time.h
#[repr(C)]
#[allow(non_camel_case_types)]
pub struct WatchFaceWidgets {
pub screen: *mut obj::lv_obj_t, // TODO: Shared with home_time_widget_t
pub time_label: *mut obj::lv_obj_t, // TODO: Should be private to Rust
pub date_label: *mut obj::lv_obj_t, // TODO: Should be private to Rust
pub ble_label: *mut obj::lv_obj_t, // TODO: Should be private to Rust
pub power_label: *mut obj::lv_obj_t, // TODO: Should be private to Rust
}
// TODO: Sync with modules/bleman/include/bleman.h
#[repr(u8)]
#[derive(PartialEq)]
#[allow(non_camel_case_types)]
#[allow(dead_code)]
pub enum BleState { // bleman_ble_state_t
BLEMAN_BLE_STATE_INACTIVE = 0,
BLEMAN_BLE_STATE_ADVERTISING = 1,
BLEMAN_BLE_STATE_DISCONNECTED = 2,
BLEMAN_BLE_STATE_CONNECTED = 3,
}
// TODO: Sync with modules/controller/include/controller/time.h
#[repr(C)]
#[allow(non_camel_case_types)]
pub struct controller_time_spec_t {
pub year: u16,
pub month: u8,
pub dayofmonth: u8,
pub hour: u8,
pub minute: u8,
pub second: u8,
pub fracs: u8,
}
/// Import C APIs
extern {
// TODO: Sync with modules/hal/include/hal.h
fn hal_battery_get_percentage(voltage: u32) -> i32;
// TODO: Sync with modules/controller/include/controller/time.h
fn controller_time_month_get_short_name(time: *const controller_time_spec_t) -> *const ::cty::c_char;
/// Style for the Time Label. TODO: Sync with widgets/home_time/screen_time.c
static style_time: obj::lv_style_t;
}
/* Stack Trace for screen_time_create:
#0 screen_time_create (ht=ht@entry=0x200008dc <home_time_widget>) at /Users/Luppy/PineTime/PineTime-apps/widgets/home_time/screen_time.c:68
#1 0x0001b36c in home_time_draw (widget=0x200008dc <home_time_widget>, parent=<optimized out>) at /Users/Luppy/PineTime/PineTime-apps/widgets/home_time/screen_time.c:222
#2 0x00003b32 in _switch_widget_draw (type=<optimized out>, widget=0x200008dc <home_time_widget>, gui=<optimized out>) at /Users/Luppy/PineTime/PineTime-apps/modules/gui/gui.c:159
#3 _gui_handle_msg (msg=0x20004c90 <_stack+1944>, gui=<optimized out>) at /Users/Luppy/PineTime/PineTime-apps/modules/gui/gui.c:299
#4 _lvgl_thread (arg=0x20004408 <_gui>) at /Users/Luppy/PineTime/PineTime-apps/modules/gui/gui.c:351
#5 0x000002f0 in sched_switch (other_prio=<optimized out>) at /Users/Luppy/PineTime/PineTime-apps/RIOT/core/sched.c:179
*/