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Add calculator watch face (#111)

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Niclas Hoyer 2023-01-14 17:51:33 +01:00 committed by GitHub
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1
movement/make/Makefile
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@ -86,6 +86,7 @@ SRCS += \
../watch_faces/complication/tempchart_face.c \
../watch_faces/complication/tally_face.c \
../watch_faces/complication/tarot_face.c \
../watch_faces/complication/rpn_calculator_face.c \
# New watch faces go above this line.
# Leave this line at the bottom of the file; it has all the targets for making your project.

1
movement/movement_faces.h
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@ -71,6 +71,7 @@
#include "tally_face.h"
#include "tarot_face.h"
#include "interval_face.h"
#include "rpn_calculator_face.h"
// New includes go above this line.
#endif // MOVEMENT_FACES_H_

347
movement/watch_faces/complication/rpn_calculator_face.c Normal file
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@ -0,0 +1,347 @@
/*
* MIT License
*
* Copyright (c) 2022 Niclas Hoyer
*
* 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 <math.h>
#include "rpn_calculator_face.h"
static void draw_number(char *buf, float num) {
float f = fmodf(num, 1.0) * 100;
sprintf(buf, "CA %4d%02d", ((int)num) % 10000, (int) f);
}
static void draw_op(char *buf, rpn_calculator_op_t op) {
switch (op) {
case rpn_calculator_op_add:
sprintf(buf, "CA Add");
break;
case rpn_calculator_op_sub:
sprintf(buf, "CA sub");
break;
case rpn_calculator_op_mul:
sprintf(buf, "CA n&ul");
break;
case rpn_calculator_op_div:
sprintf(buf, "CA div");
break;
case rpn_calculator_op_pow:
sprintf(buf, "CA pow");
break;
case rpn_calculator_op_sqrt:
sprintf(buf, "CA sqrt");
break;
case rpn_calculator_op_pi:
sprintf(buf, "CA pi");
break;
default:
break;
}
}
static void printf_stack(rpn_calculator_state_t *state) {
printf("Stack: [%f, %f, %f, %f], top: %d\n",
state->stack[0],
state->stack[1],
state->stack[2],
state->stack[3],
state->top
);
}
static void next_op(rpn_calculator_state_t *state) {
state->op += 1;
state->op = state->op % RPN_CALCULATOR_MAX_OPS;
}
// increase a digit of a floating point number
// FIXME: this converts the number to string and back, there might
// be better ways to do this
static float inc_digit(float num, uint8_t position) {
char buf[7];
if (position > 5) {
return 0.0;
}
// inverse position (rtl)
position = 5 - position;
float f = fmodf(num, 1.0) * 100;
sprintf(buf, "%04d%02d", ((int)num) % 10000, (int) f);
uint8_t digit = buf[position] - '0';
digit = (digit + 1) % 10;
buf[position] = digit + '0';
printf("buf: %s\n", buf);
return strtof(buf, NULL) / 100.0;
}
static void stack_push(rpn_calculator_state_t *state, float f) {
printf_stack(state);
printf("push: %f\n", f);
state->top++;
if (state->top >= RPN_CALCULATOR_STACK_SIZE) {
// FIXME: implement this using a circular buffer?
for (int i=0; i<RPN_CALCULATOR_STACK_SIZE-1; i++) {
state->stack[i] = state->stack[i+1];
}
}
state->stack[state->top] = f;
}
static float stack_peek(rpn_calculator_state_t *state) {
if (state->top > -1) {
return state->stack[state->top];
}
return 0;
}
static float stack_pop(rpn_calculator_state_t *state) {
printf_stack(state);
float f = stack_peek(state);
state->stack[state->top] = 0;
printf("pop: %f\n", f);
if (state->top > -1) {
state->top--;
} else {
state->top = -1; // empty
}
return f;
}
static void run_op(rpn_calculator_state_t *state) {
printf_stack(state);
bool op_found = false;
// ops without parameters
switch (state->op) {
case rpn_calculator_op_pi:
stack_push(state, M_PI);
op_found = true;
break;
default:
break;
}
if (op_found) {
state->mode = rpn_calculator_waiting;
return;
}
// ops with one parameter
if (state->top < 0) {
state->mode = rpn_calculator_err;
return;
}
float right = stack_pop(state);
printf("right: %f\n", right);
switch (state->op) {
case rpn_calculator_op_sqrt:
stack_push(state, sqrt(right));
op_found = true;
break;
default:
break;
}
if (op_found) {
state->mode = rpn_calculator_waiting;
return;
}
// ops with two parameters
if (state->top < 0) {
// no parameter left -> error
state->mode = rpn_calculator_err;
return;
}
float left = stack_pop(state);
printf("left: %f\n", left);
switch (state->op) {
case rpn_calculator_op_add:
stack_push(state, left + right);
op_found = true;
break;
case rpn_calculator_op_sub:
stack_push(state, left - right);
op_found = true;
break;
case rpn_calculator_op_mul:
stack_push(state, left * right);
op_found = true;
break;
case rpn_calculator_op_div:
stack_push(state, left / right);
op_found = true;
break;
case rpn_calculator_op_pow:
stack_push(state, powf(left, right));
op_found = true;
break;
default:
break;
}
if (op_found) {
state->mode = rpn_calculator_waiting;
return;
}
state->mode = rpn_calculator_err;
}
static void draw(rpn_calculator_state_t *state, uint8_t subsecond, movement_settings_t *settings) {
char buf[16];
switch (state->mode) {
case rpn_calculator_err:
sprintf(buf, "CA err ");
break;
case rpn_calculator_number:
draw_number(buf, stack_peek(state));
uint8_t i = 4 + (5 - state->selection);
if (buf[i] == ' ') {
buf[i] = '0';
}
if (subsecond % 2) {
buf[i] = ' ';
}
break;
case rpn_calculator_waiting:
printf_stack(state);
draw_number(buf, stack_peek(state));
break;
case rpn_calculator_op:
draw_op(buf, state->op);
break;
default:
break;
}
watch_display_string(buf, 0);
}
void rpn_calculator_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr) {
(void) settings;
if (*context_ptr == NULL) {
*context_ptr = malloc(sizeof(rpn_calculator_state_t));
memset(*context_ptr, 0, sizeof(rpn_calculator_state_t));
// Do any one-time tasks in here; the inside of this conditional happens only at boot.
rpn_calculator_state_t *state = *context_ptr;
state->top = -1;
}
// Do any pin or peripheral setup here; this will be called whenever the watch wakes from deep sleep.
}
void rpn_calculator_face_activate(movement_settings_t *settings, void *context) {
(void) settings;
rpn_calculator_state_t *state = (rpn_calculator_state_t *)context;
(void) state;
// Handle any tasks related to your watch face coming on screen.
}
bool rpn_calculator_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
rpn_calculator_state_t *state = (rpn_calculator_state_t *)context;
switch (event.event_type) {
case EVENT_ACTIVATE:
draw(state, event.subsecond, settings);
break;
case EVENT_TICK:
if (state->mode == rpn_calculator_number) {
draw(state, event.subsecond, settings);
}
break;
case EVENT_MODE_BUTTON_UP:
switch (state->mode) {
case rpn_calculator_number:
state->mode = rpn_calculator_waiting;
draw(state, event.subsecond, settings);
movement_request_tick_frequency(1);
break;
default:
state->mode = rpn_calculator_waiting;
movement_request_tick_frequency(1);
movement_move_to_next_face();
break;
}
break;
case EVENT_LIGHT_BUTTON_UP:
switch (state->mode) {
case rpn_calculator_waiting:
state->mode = rpn_calculator_op;
draw(state, event.subsecond, settings);
break;
case rpn_calculator_number:
state->selection = (state->selection + 1) % 6;
draw(state, event.subsecond, settings);
break;
case rpn_calculator_op:
next_op(state);
draw(state, event.subsecond, settings);
break;
default:
movement_illuminate_led();
break;
}
break;
case EVENT_ALARM_BUTTON_UP:
switch (state->mode) {
case rpn_calculator_waiting:
state->mode = rpn_calculator_number;
state->selection = 2;
stack_push(state, 0);
draw(state, event.subsecond, settings);
movement_request_tick_frequency(4);
break;
case rpn_calculator_number:
state->stack[state->top] = inc_digit(state->stack[state->top], state->selection);
printf_stack(state);
draw(state, event.subsecond, settings);
break;
case rpn_calculator_err:
state->mode = rpn_calculator_waiting;
draw(state, event.subsecond, settings);
break;
case rpn_calculator_op:
run_op(state);
draw(state, event.subsecond, settings);
break;
default:
break;
}
break;
case EVENT_TIMEOUT:
state->mode = rpn_calculator_waiting;
movement_request_tick_frequency(1);
movement_move_to_face(0);
break;
case EVENT_LOW_ENERGY_UPDATE:
break;
default:
break;
}
// return true if the watch can enter standby mode. If you are PWM'ing an LED or buzzing the buzzer here,
// you should return false since the PWM driver does not operate in standby mode.
return true;
}
void rpn_calculator_face_resign(movement_settings_t *settings, void *context) {
(void) settings;
(void) context;
// handle any cleanup before your watch face goes off-screen.
}

72
movement/watch_faces/complication/rpn_calculator_face.h Normal file
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@ -0,0 +1,72 @@
/*
* MIT License
*
* Copyright (c) 2022 Niclas Hoyer
*
* 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 RPN_CALCULATOR_FACE_H_
#define RPN_CALCULATOR_FACE_H_
#include "movement.h"
#define RPN_CALCULATOR_STACK_SIZE 4
#define RPN_CALCULATOR_MAX_OPS 7;
typedef enum {
rpn_calculator_op_add,
rpn_calculator_op_sub,
rpn_calculator_op_mul,
rpn_calculator_op_div,
rpn_calculator_op_pow,
rpn_calculator_op_sqrt,
rpn_calculator_op_pi
} rpn_calculator_op_t;
typedef enum {
rpn_calculator_waiting,
rpn_calculator_op,
rpn_calculator_number,
rpn_calculator_err,
} rpn_calculator_mode_t;
typedef struct {
rpn_calculator_mode_t mode;
rpn_calculator_op_t op;
float stack[RPN_CALCULATOR_STACK_SIZE];
int8_t top;
uint8_t selection;
} rpn_calculator_state_t;
void rpn_calculator_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr);
void rpn_calculator_face_activate(movement_settings_t *settings, void *context);
bool rpn_calculator_face_loop(movement_event_t event, movement_settings_t *settings, void *context);
void rpn_calculator_face_resign(movement_settings_t *settings, void *context);
#define rpn_calculator_face ((const watch_face_t){ \
rpn_calculator_face_setup, \
rpn_calculator_face_activate, \
rpn_calculator_face_loop, \
rpn_calculator_face_resign, \
NULL, \
})
#endif // RPN_CALCULATOR_FACE_H_