--- /dev/null
+/*
+ * MIT License
+ *
+ * Copyright (c) 2022 Andreas Nebinger
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include "stock_stopwatch_face.h"
+#include "watch.h"
+#include "watch_utility.h"
+#include "watch_rtc.h"
+
+/*
+ This watch face implements the original F-91W stopwatch functionality
+ including counting hundredths of seconds and lap timing. There are two
+ improvements compared to the functionality of the original:
+ 1. When reaching 59:59 the counter does not simply jump back to zero,
+ but keeps track of hours in the upper right hand corner. (Up to 24h)
+ 2. Long pressing the light button toggles the led behaviour: it either
+ turns on on each button press or it doesn't.
+*/
+
+#if __EMSCRIPTEN__
+#include <emscripten.h>
+#include <emscripten/html5.h>
+#else
+#include "../../../watch-library/hardware/include/saml22j18a.h"
+#include "../../../watch-library/hardware/include/component/tc.h"
+#include "../../../watch-library/hardware/hri/hri_tc_l22.h"
+#endif
+
+// distant future for background task: January 1, 2083
+static const watch_date_time distant_future = {
+ .unit = {0, 0, 0, 1, 1, 63}
+};
+
+static uint32_t _ticks;
+static uint32_t _lap_ticks;
+static uint8_t _blink_ticks;
+static uint32_t _old_seconds;
+static uint8_t _old_minutes;
+static uint8_t _hours;
+static bool _colon;
+static bool _is_running;
+
+#if __EMSCRIPTEN__
+
+static long _em_interval_id = 0;
+
+void em_cb_handler(void *userData) {
+ // interrupt handler for emscripten 128 Hz callbacks
+ (void) userData;
+ _ticks++;
+}
+
+static void _cb_initialize() { }
+
+static inline void _cb_stop() {
+ emscripten_clear_interval(_em_interval_id);
+ _em_interval_id = 0;
+ _is_running = false;
+}
+
+static inline void _cb_start() {
+ // initiate 128 hz callback
+ _em_interval_id = emscripten_set_interval(em_cb_handler, (double)(1000/128), (void *)NULL);
+}
+
+#else
+
+static inline void _cb_start() {
+ // start the TC2 timer
+ hri_tc_set_CTRLA_ENABLE_bit(TC2);
+ _is_running = true;
+}
+
+static inline void _cb_stop() {
+ // stop the TC2 timer
+ hri_tc_clear_CTRLA_ENABLE_bit(TC2);
+ _is_running = false;
+}
+
+static void _cb_initialize() {
+ // setup and initialize TC2 for a 64 Hz interrupt
+ hri_mclk_set_APBCMASK_TC2_bit(MCLK);
+ hri_gclk_write_PCHCTRL_reg(GCLK, TC2_GCLK_ID, GCLK_PCHCTRL_GEN_GCLK3 | GCLK_PCHCTRL_CHEN);
+ _cb_stop();
+ hri_tc_write_CTRLA_reg(TC2, TC_CTRLA_SWRST);
+ hri_tc_wait_for_sync(TC2, TC_SYNCBUSY_SWRST);
+ hri_tc_write_CTRLA_reg(TC2, TC_CTRLA_PRESCALER_DIV64 | // 32 Khz divided by 64 divided by 4 results in a 128 Hz interrupt
+ TC_CTRLA_MODE_COUNT8 |
+ TC_CTRLA_RUNSTDBY);
+ hri_tccount8_write_PER_reg(TC2, 3);
+ hri_tc_set_INTEN_OVF_bit(TC2);
+ NVIC_ClearPendingIRQ(TC2_IRQn);
+ NVIC_EnableIRQ (TC2_IRQn);
+}
+
+void TC2_Handler(void) {
+ // interrupt handler for TC2 (globally!)
+ _ticks++;
+ TC2->COUNT8.INTFLAG.reg |= TC_INTFLAG_OVF;
+}
+
+#endif
+
+static inline void _button_beep(movement_settings_t *settings) {
+ // play a beep as confirmation for a button press (if applicable)
+ if (settings->bit.button_should_sound) watch_buzzer_play_note(BUZZER_NOTE_C7, 50);
+}
+
+/// @brief Display minutes, seconds and fractions derived from 128 Hz tick counter
+/// on the lcd.
+/// @param ticks
+static void _display_ticks(uint32_t ticks) {
+ char buf[14];
+ uint8_t sec_100 = (ticks & 0x7F) * 100 / 128;
+ uint32_t seconds = ticks >> 7;
+ uint32_t minutes = seconds / 60;
+ if (_hours)
+ sprintf(buf, "%2u%02lu%02lu%02u", _hours, minutes, (seconds % 60), sec_100);
+ else
+ sprintf(buf, " %02lu%02lu%02u", minutes, (seconds % 60), sec_100);
+ watch_display_string(buf, 2);
+}
+
+/// @brief Displays the current stopwatch time on the LCD (more optimized than _display_ticks())
+static void _draw() {
+ if (_lap_ticks == 0) {
+ char buf[14];
+ uint8_t sec_100 = (_ticks & 0x7F) * 100 / 128;
+ if (_is_running) {
+ uint32_t seconds = _ticks >> 7;
+ if (seconds != _old_seconds) {
+ // seconds have changed
+ _old_seconds = seconds;
+ uint8_t minutes = seconds / 60;
+ seconds %= 60;
+ if (minutes != _old_minutes) {
+ // minutes have changed, draw everything
+ _old_minutes = minutes;
+ minutes %= 60;
+ if (_hours)
+ // with hour indicator
+ sprintf(buf, "%2u%02u%02lu%02u", _hours, minutes, seconds, sec_100);
+ else
+ // no hour indicator
+ sprintf(buf, " %02u%02lu%02u", minutes, seconds, sec_100);
+ watch_display_string(buf, 2);
+ } else {
+ // just draw seconds
+ sprintf(buf, "%02lu%02u", seconds, sec_100);
+ watch_display_string(buf, 6);
+ }
+ } else {
+ // only draw 100ths of seconds
+ sprintf(buf, "%02u", sec_100);
+ watch_display_string(buf, 8);
+ }
+ } else {
+ _display_ticks(_ticks);
+ }
+ }
+ if (_is_running) {
+ // blink the colon every half second
+ uint8_t blink_ticks = ((_ticks >> 6) & 1);
+ if (blink_ticks != _blink_ticks) {
+ _blink_ticks = blink_ticks;
+ _colon = !_colon;
+ if (_colon) watch_set_colon();
+ else watch_clear_colon();
+ }
+ }
+}
+
+static inline void _update_lap_indicator() {
+ if (_lap_ticks) watch_set_indicator(WATCH_INDICATOR_LAP);
+ else watch_clear_indicator(WATCH_INDICATOR_LAP);
+}
+
+static inline void _set_colon() {
+ watch_set_colon();
+ _colon = true;
+}
+
+void stock_stopwatch_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr) {
+ (void) settings;
+ (void) watch_face_index;
+ if (*context_ptr == NULL) {
+ *context_ptr = malloc(sizeof(stock_stopwatch_state_t));
+ memset(*context_ptr, 0, sizeof(stock_stopwatch_state_t));
+ stock_stopwatch_state_t *state = (stock_stopwatch_state_t *)*context_ptr;
+ _ticks = _lap_ticks = _blink_ticks = _old_minutes = _old_seconds = _hours = 0;
+ _is_running = _colon = false;
+ state->light_on_button = true;
+ }
+ if (!_is_running) {
+ // prepare the 128 Hz callback source
+ _cb_initialize();
+ }
+}
+
+void stock_stopwatch_face_activate(movement_settings_t *settings, void *context) {
+ (void) settings;
+ (void) context;
+ if (_is_running) {
+ // The background task will keep the watch from entering low energy mode while the stopwatch is on screen.
+ movement_schedule_background_task(distant_future);
+ }
+}
+
+bool stock_stopwatch_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
+ stock_stopwatch_state_t *state = (stock_stopwatch_state_t *)context;
+
+ // handle overflow of fast ticks
+ while (_ticks >= (128 * 60 * 60)) {
+ _ticks -= (128 * 60 * 60);
+ _hours++;
+ if (_hours >= 24) _hours -= 24;
+ // initiate a re-draw
+ _old_minutes = 59;
+ }
+
+ switch (event.event_type) {
+ case EVENT_ACTIVATE:
+ _set_colon();
+ watch_display_string("ST ", 0);
+ _update_lap_indicator();
+ if (_is_running) movement_request_tick_frequency(16);
+ _display_ticks(_lap_ticks ? _lap_ticks : _ticks);
+ break;
+ case EVENT_TICK:
+ _draw();
+ break;
+ case EVENT_MODE_BUTTON_UP:
+ movement_move_to_next_face();
+ break;
+ case EVENT_LIGHT_LONG_PRESS:
+ // kind od hidden feature: long press toggles light on or off
+ state->light_on_button = !state->light_on_button;
+ if (state->light_on_button) movement_illuminate_led();
+ else watch_set_led_off();
+ break;
+ case EVENT_ALARM_BUTTON_DOWN:
+ _is_running = !_is_running;
+ if (_is_running) {
+ // start or continue stopwatch
+ movement_request_tick_frequency(16);
+ // register 128 hz callback for time measuring
+ _cb_start();
+ // schedule the keepalive task when running
+ movement_schedule_background_task(distant_future);
+ } else {
+ // stop the stopwatch
+ _cb_stop();
+ movement_request_tick_frequency(1);
+ _set_colon();
+ // cancel the keepalive task
+ movement_cancel_background_task();
+ }
+ _draw();
+ _button_beep(settings);
+ break;
+ case EVENT_LIGHT_BUTTON_DOWN:
+ if (state->light_on_button) movement_illuminate_led();
+ if (_is_running) {
+ if (_lap_ticks) {
+ // clear lap and continue running
+ _lap_ticks = 0;
+ movement_request_tick_frequency(16);
+ } else {
+ // set lap ticks and stop updating the display
+ _lap_ticks = _ticks;
+ movement_request_tick_frequency(2);
+ _set_colon();
+ }
+ } else {
+ if (_lap_ticks) {
+ // clear lap and show running stopwatch
+ _lap_ticks = 0;
+ } else if (_ticks) {
+ // reset stopwatch
+ _ticks = _lap_ticks = _blink_ticks = _old_minutes = _old_seconds = _hours = 0;
+ _button_beep(settings);
+ }
+ }
+ _display_ticks(_ticks);
+ _update_lap_indicator();
+ break;
+ case EVENT_TIMEOUT:
+ if (!_is_running) movement_move_to_face(0);
+ break;
+ case EVENT_LOW_ENERGY_UPDATE:
+ _draw();
+ break;
+ default:
+ break;
+ }
+ return true;
+}
+
+void stock_stopwatch_face_resign(movement_settings_t *settings, void *context) {
+ (void) settings;
+ (void) context;
+ // cancel the keepalive task
+ movement_cancel_background_task();
+}
\ No newline at end of file
--- /dev/null
+/*
+ * MIT License
+ *
+ * Copyright (c) 2022 Andreas Nebinger
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef STOCK_STOPWATCH_FACE_H_
+#define STOCK_STOPWATCH_FACE_H_
+
+#include "movement.h"
+
+// This watch face relies heavily on static vars in stock_stopwatch.c.
+// The disadvantage is that you cannot use more than one instance of this watch face on
+// your custom firmware - but then again, who would want that? The advantage is that accessing
+// vars is more direct and faster, and we can save some precious cpu cycles :-)
+
+typedef struct {
+ bool light_on_button; // determines whether the light button actually triggers the led
+} stock_stopwatch_state_t;
+
+void stock_stopwatch_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr);
+void stock_stopwatch_face_activate(movement_settings_t *settings, void *context);
+bool stock_stopwatch_face_loop(movement_event_t event, movement_settings_t *settings, void *context);
+void stock_stopwatch_face_resign(movement_settings_t *settings, void *context);
+
+#if __EMSCRIPTEN__
+void em_cb_handler(void *userData);
+#else
+void TC2_Handler(void);
+#endif
+
+#define stock_stopwatch_face ((const watch_face_t){ \
+ stock_stopwatch_face_setup, \
+ stock_stopwatch_face_activate, \
+ stock_stopwatch_face_loop, \
+ stock_stopwatch_face_resign, \
+ NULL, \
+})
+
+#endif // STOCK_STOPWATCH_FACE_H_
projects / sensor-watch.git / commitdiff