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/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ //! Barebones Watch Face for Rust + Mynewt on PineTime Smart Watch #![no_std] // Don't link with standard Rust library, which is not compatible with embedded systems #![feature(trace_macros)] // Allow macro tracing: `trace_macros!(true)` #![feature(concat_idents)] // Allow `concat_idents!()` macro used in `coap!()` macro #![feature(proc_macro_hygiene)] // Allow Procedural Macros like `run!()` #![feature(exclusive_range_pattern)] // Allow ranges like `0..128` in `match` statements pub use watchface; // Export the Watch Face Framework use core::{ fmt::Write, ptr, }; use macros::strn; use watchface::lvgl::mynewt::{ result::*, Strn, }; use watchface::lvgl::{ self, core::obj, themes::theme, widgets::label, }; use watchface::{ BluetoothState, String, WatchFace, WatchFaceState, WatchFaceTime, new_string, to_strn, }; /////////////////////////////////////////////////////////////////////////////// // Watch Face Definition /// Barebones Watch Face with no frills pub struct BarebonesWatchFace { /// Label for Time: "12:34" pub time_label: lvgl::Ptr, /// Label for Date: "MON 22 MAY 2020" pub date_label: lvgl::Ptr, /// Label for Bluetooth State (Bluetooth Icon) pub bluetooth_label: lvgl::Ptr, /// Label for Power Indicator (Charging & Battery) pub power_label: lvgl::Ptr, } impl WatchFace for BarebonesWatchFace { /////////////////////////////////////////////////////////////////////////////// // Create Watch Face /// Create the widgets for the Watch Face fn new() -> MynewtResult<Self> { // Get the active screen let screen = watchface::get_active_screen(); // Get the large title font for showing the time let title_font = theme::get_font_title() ? ; // Create the widgets let watch_face = Self { // Create a Label for Time: "00:00" time_label: { let lbl = label::create(screen, ptr::null()) ? ; // `?` will terminate the function in case of error label::set_long_mode(lbl, label::LV_LABEL_LONG_BREAK) ? ; label::set_text( lbl, strn!("00:00")) ? ; // strn creates a null-terminated string obj::set_width( lbl, 240) ? ; obj::set_height( lbl, 200) ? ; label::set_align( lbl, label::LV_LABEL_ALIGN_CENTER) ? ; obj::align( lbl, screen, obj::LV_ALIGN_CENTER, 0, -30) ? ; obj::set_style_local_text_font(lbl, label::LV_LABEL_PART_MAIN, obj::LV_STATE_DEFAULT, title_font) ? ; // Use large title font lbl // Return the label as time_label }, // Create a Label for Date: "MON 22 MAY 2020" date_label: { let lbl = label::create(screen, ptr::null()) ? ; label::set_long_mode(lbl, label::LV_LABEL_LONG_BREAK) ? ; obj::set_width( lbl, 200) ? ; obj::set_height( lbl, 200) ? ; label::set_text( lbl, strn!("")) ? ; // strn creates a null-terminated string label::set_align( lbl, label::LV_LABEL_ALIGN_CENTER) ? ; obj::align( lbl, screen, obj::LV_ALIGN_CENTER, 0, 40) ? ; lbl // Return the label as date_label }, // Create a Label for Bluetooth State bluetooth_label: { let lbl = label::create(screen, ptr::null()) ? ; obj::set_width( lbl, 50) ? ; obj::set_height( lbl, 80) ? ; label::set_text( lbl, strn!("")) ? ; // strn creates a null-terminated string label::set_recolor( lbl, true) ? ; label::set_align( lbl, label::LV_LABEL_ALIGN_LEFT) ? ; obj::align( lbl, screen, obj::LV_ALIGN_IN_TOP_LEFT, 0, 0) ? ; lbl // Return the label as bluetooth_label }, // Create a Label for Power Indicator power_label: { let lbl = label::create(screen, ptr::null()) ? ; obj::set_width( lbl, 80) ? ; obj::set_height( lbl, 20) ? ; label::set_text( lbl, strn!("")) ? ; // strn creates a null-terminated string label::set_recolor(lbl, true) ? ; label::set_align( lbl, label::LV_LABEL_ALIGN_RIGHT) ? ; obj::align( lbl, screen, obj::LV_ALIGN_IN_TOP_RIGHT, 0, 0) ? ; lbl // Return the label as power_label }, }; // Return the watch face Ok(watch_face) } /////////////////////////////////////////////////////////////////////////////// // Update Watch Face /// Update the widgets in the Watch Face with the current state fn update(&self, state: &WatchFaceState) -> MynewtResult<()> { // Populate the Time and Date Labels self.update_date_time(state) ? ; // Populate the Bluetooth Label self.update_bluetooth(state) ? ; // Populate the Power Label self.update_power(state) ? ; Ok(()) } } impl BarebonesWatchFace { /////////////////////////////////////////////////////////////////////////////// // Update Watch Face /// Populate the Time and Date Labels with the time and date fn update_date_time(&self, state: &WatchFaceState) -> MynewtResult<()> { // Format the time as "12:34" and set the label let mut buf = new_string(); write!( &mut buf, // Write the formatted text "{:02}:{:02}\0", // Must terminate Rust strings with null state.time.hour, state.time.minute ).expect("time fail"); label::set_text( // Set the label self.time_label, &to_strn(&buf) ) ? ; // Get the short day name and short month name let day = get_day_name(&state.time); let month = get_month_name(&state.time); // Format the date as "MON 22 MAY 2020" and set the label let mut buf = new_string(); write!( &mut buf, // Write the formatted text "{} {} {} {}\n\0", // Must terminate Rust strings with null day, state.time.day, month, state.time.year ).expect("date fail"); label::set_text( // Set the label self.date_label, &to_strn(&buf) ) ? ; Ok(()) } /// Populate the Bluetooth Label with the Bluetooth State (Bluetooth Icon) fn update_bluetooth(&self, state: &WatchFaceState) -> MynewtResult<()> { if state.bluetooth == BluetoothState::BLUETOOTH_STATE_DISCONNECTED { // If Bluetooth is disconnected, leave the label empty label::set_text( self.bluetooth_label, strn!("") ) ? ; } else { // Compute the color of the Bluetooth icon let color = match &state.bluetooth { BluetoothState::BLUETOOTH_STATE_INACTIVE => "#000000", // Black BluetoothState::BLUETOOTH_STATE_ADVERTISING => "#0000ff", // Blue BluetoothState::BLUETOOTH_STATE_DISCONNECTED => "#ff0000", // Red BluetoothState::BLUETOOTH_STATE_CONNECTED => "#00ff00", // Green }; // Format the Bluetooth status and set the label let mut buf = new_string(); write!( &mut buf, // Write the formatted text "{} \u{F293}#\0", // LV_SYMBOL_BLUETOOTH. Must terminate Rust strings with null. color ).expect("bt fail"); label::set_text( // Set the label self.bluetooth_label, &to_strn(&buf) ) ? ; } Ok(()) } /// Populate the Power Label with the Power Indicator (Charging & Battery) fn update_power(&self, state: &WatchFaceState) -> MynewtResult<()> { // Get the active screen let screen = watchface::get_active_screen(); // Compute the percentage power let percentage = convert_battery_voltage(state.millivolts); // Compute the colour for the charging symbol let color = // Charging color if percentage <= 20 { "#f2495c" } // Low Battery else if state.powered && !(state.charging) { "#73bf69" } // Full Battery else { "#fade2a" }; // Mid Battery let symbol = // Charging symbol if state.powered { "\u{F0E7}" } // LV_SYMBOL_CHARGE else { " " }; // Format the Power Indicator and set the label let mut buf = new_string(); write!( &mut buf, // Write the formatted text "{} {}%{}#\nRUST ({}mV)\0", // Must terminate Rust strings with null color, percentage, symbol, state.millivolts ).expect("batt fail"); label::set_text( self.power_label, &to_strn(&buf) ) ? ; obj::align( self.power_label, screen, obj::LV_ALIGN_IN_TOP_RIGHT, 0, 0 ) ? ; Ok(()) } } /////////////////////////////////////////////////////////////////////////////// // Date Time Functions /// Get month short name fn get_month_name(time: &WatchFaceTime) -> String { String::from( match time.month { 1 => "JAN", 2 => "FEB", 3 => "MAR", 4 => "APR", 5 => "MAY", 6 => "JUN", 7 => "JUL", 8 => "AUG", 9 => "SEP", 10 => "OCT", 11 => "NOV", 12 => "DEC", _ => "???", } ) } /// Get day short name fn get_day_name(time: & WatchFaceTime) -> String { String::from( match time.day_of_week { 0 => "SUN", 1 => "MON", 2 => "TUE", 3 => "WED", 4 => "THU", 5 => "FRI", 6 => "SAT", _ => "???", } ) } /////////////////////////////////////////////////////////////////////////////// // Battery Functions /// Convert battery voltage to percentage fn convert_battery_voltage(_voltage: u32) -> i32 { 50 // TODO }