--- /dev/null
+/*
+ * 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.
+}
--- /dev/null
+/*
+ * 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_
+
projects / sensor-watch.git / commitdiff