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/* SPDX-License-Identifier: MIT */
/*
* MIT License
*
* Copyright © 2021-2022 Joey Castillo <joeycastillo@utexas.edu> <jose.castillo@gmail.com>
* Copyright © 2023 Jeremy O'Brien <neutral@fastmail.com>
* Copyright © 2024 Matheus Afonso Martins Moreira <matheus.a.m.moreira@gmail.com> (https://www.matheusmoreira.com/)
*
* 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 "pulsometer_face.h"
#include "watch.h"
#ifndef PULSOMETER_FACE_TITLE
#define PULSOMETER_FACE_TITLE "PL"
#endif
#ifndef PULSOMETER_FACE_CALIBRATION_DEFAULT
#define PULSOMETER_FACE_CALIBRATION_DEFAULT (30)
#endif
#ifndef PULSOMETER_FACE_CALIBRATION_INCREMENT
#define PULSOMETER_FACE_CALIBRATION_INCREMENT (10)
#endif
// tick frequency will be 2 to this power Hz (0 for 1 Hz, 2 for 4 Hz, etc.)
#ifndef PULSOMETER_FACE_FREQUENCY_FACTOR
#define PULSOMETER_FACE_FREQUENCY_FACTOR (4ul)
#endif
#define PULSOMETER_FACE_FREQUENCY (1 << PULSOMETER_FACE_FREQUENCY_FACTOR)
typedef struct {
bool measuring;
int16_t pulses;
int16_t ticks;
int8_t calibration;
} pulsometer_state_t;
static void pulsometer_display_title(pulsometer_state_t *pulsometer) {
watch_display_string(PULSOMETER_FACE_TITLE, 0);
}
static void pulsometer_display_calibration(pulsometer_state_t *pulsometer) {
char buf[3];
snprintf(buf, sizeof(buf), "%2hhd", pulsometer->calibration);
watch_display_string(buf, 2);
}
static void pulsometer_display_measurement(pulsometer_state_t *pulsometer) {
char buf[7];
snprintf(buf, sizeof(buf), "%-6hd", pulsometer->pulses);
watch_display_string(buf, 4);
}
static void pulsometer_indicate(pulsometer_state_t *pulsometer) {
if (pulsometer->measuring) {
watch_set_indicator(WATCH_INDICATOR_LAP);
} else {
watch_clear_indicator(WATCH_INDICATOR_LAP);
}
}
static void pulsometer_start_measurement(pulsometer_state_t *pulsometer) {
pulsometer->measuring = true;
pulsometer->pulses = INT16_MAX;
pulsometer->ticks = 0;
pulsometer_indicate(pulsometer);
movement_request_tick_frequency(PULSOMETER_FACE_FREQUENCY);
}
static void pulsometer_measure(pulsometer_state_t *pulsometer) {
if (!pulsometer->measuring) { return; }
pulsometer->ticks++;
float ticks_per_minute = 60 << PULSOMETER_FACE_FREQUENCY_FACTOR;
float pulses_while_button_held = ticks_per_minute / pulsometer->ticks;
float calibrated_pulses = pulses_while_button_held * pulsometer->calibration;
calibrated_pulses += 0.5f;
pulsometer->pulses = (int16_t) calibrated_pulses;
pulsometer_display_measurement(pulsometer);
}
static void pulsometer_stop_measurement(pulsometer_state_t *pulsometer) {
movement_request_tick_frequency(1);
pulsometer->measuring = false;
pulsometer_display_measurement(pulsometer);
pulsometer_indicate(pulsometer);
}
static void pulsometer_cycle_calibration(pulsometer_state_t *pulsometer, int8_t increment) {
if (pulsometer->measuring) { return; }
if (pulsometer->calibration <= 0) {
pulsometer->calibration = 1;
}
int8_t last = pulsometer->calibration;
pulsometer->calibration += increment;
if (pulsometer->calibration > 39) {
pulsometer->calibration = last == 39? 1 : 39;
}
pulsometer_display_calibration(pulsometer);
}
void pulsometer_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr) {
(void) settings;
(void) watch_face_index;
if (*context_ptr == NULL) {
pulsometer_state_t *pulsometer = malloc(sizeof(pulsometer_state_t));
pulsometer->calibration = PULSOMETER_FACE_CALIBRATION_DEFAULT;
pulsometer->pulses = 0;
pulsometer->ticks = 0;
*context_ptr = pulsometer;
}
}
void pulsometer_face_activate(movement_settings_t *settings, void *context) {
(void) settings;
pulsometer_state_t *pulsometer = context;
pulsometer->measuring = false;
pulsometer_display_title(pulsometer);
pulsometer_display_calibration(pulsometer);
pulsometer_display_measurement(pulsometer);
}
bool pulsometer_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
(void) settings;
pulsometer_state_t *pulsometer = (pulsometer_state_t *) context;
switch (event.event_type) {
case EVENT_ALARM_BUTTON_DOWN:
pulsometer_start_measurement(pulsometer);
break;
case EVENT_ALARM_BUTTON_UP:
case EVENT_ALARM_LONG_UP:
pulsometer_stop_measurement(pulsometer);
break;
case EVENT_TICK:
pulsometer_measure(pulsometer);
break;
case EVENT_LIGHT_BUTTON_UP:
pulsometer_cycle_calibration(pulsometer, 1);
break;
case EVENT_LIGHT_LONG_UP:
pulsometer_cycle_calibration(pulsometer, PULSOMETER_FACE_CALIBRATION_INCREMENT);
break;
case EVENT_LIGHT_BUTTON_DOWN:
// Inhibit the LED
break;
case EVENT_TIMEOUT:
movement_move_to_face(0);
break;
default:
movement_default_loop_handler(event, settings);
break;
}
return true;
}
void pulsometer_face_resign(movement_settings_t *settings, void *context) {
(void) settings;
(void) context;
}
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