fix missing prototype warnings

movement/watch_faces/clock/world_clock_face.c

@@ -26,7 +26,7 @@ void world_clock_face_activate(movement_settings_t *settings, void *context) {
     watch_set_colon();
 }
 
-bool world_clock_face_do_display_mode(movement_event_t event, movement_settings_t *settings, world_clock_state_t *state) {
+static bool world_clock_face_do_display_mode(movement_event_t event, movement_settings_t *settings, world_clock_state_t *state) {
     char buf[11];
     uint8_t pos;
 
@@ -101,7 +101,7 @@ bool world_clock_face_do_display_mode(movement_event_t event, movement_settings_
     return true;
 }
 
-bool world_clock_face_do_settings_mode(movement_event_t event, movement_settings_t *settings, world_clock_state_t *state) {
+static bool _world_clock_face_do_settings_mode(movement_event_t event, movement_settings_t *settings, world_clock_state_t *state) {
     switch (event.event_type) {
         case EVENT_MODE_BUTTON_UP:
             movement_move_to_next_face();
@@ -176,7 +176,7 @@ bool world_clock_face_loop(movement_event_t event, movement_settings_t *settings
     if (state->current_screen == 0) {
         return world_clock_face_do_display_mode(event, settings, state);
     } else {
-        return world_clock_face_do_settings_mode(event, settings, state);
+        return _world_clock_face_do_settings_mode(event, settings, state);
     }
 }
 

movement/watch_faces/complications/day_one_face.c

@@ -3,12 +3,12 @@
 #include "day_one_face.h"
 #include "watch.h"
 
-uint32_t _day_one_face_juliandaynum(uint16_t year, uint16_t month, uint16_t day) {
+static uint32_t _day_one_face_juliandaynum(uint16_t year, uint16_t month, uint16_t day) {
     // from here: https://en.wikipedia.org/wiki/Julian_day#Julian_day_number_calculation
     return (1461 * (year + 4800 + (month - 14) / 12)) / 4 + (367 * (month - 2 - 12 * ((month - 14) / 12))) / 12 - (3 * ((year + 4900 + (month - 14) / 12) / 100))/4 + day - 32075;
 }
 
-void _day_one_face_update(day_one_state_t state) {
+static void _day_one_face_update(day_one_state_t state) {
     char buf[14];
     watch_date_time date_time = watch_rtc_get_date_time();
     uint32_t julian_date = _day_one_face_juliandaynum(date_time.unit.year + WATCH_RTC_REFERENCE_YEAR, date_time.unit.month, date_time.unit.day);

movement/watch_faces/demos/lis2dh_logging_face.c

@@ -12,7 +12,7 @@
 // Pressing the alarm button enters the log mode, where the main display shows the number of interrupts detected in each of the last
 // 24 hours (the hour is shown in the top right digit and AM/PM indicator, if the clock is set to 12 hour mode)
 
-void _lis2dh_logging_face_update_display(movement_settings_t *settings, lis2dh_logger_state_t *logger_state, lis2dh_interrupt_state interrupt_state, watch_date_time date_time) {
+static void _lis2dh_logging_face_update_display(movement_settings_t *settings, lis2dh_logger_state_t *logger_state, lis2dh_interrupt_state interrupt_state, watch_date_time date_time) {
     char buf[14];
     char time_indication_character;
     int8_t pos;
@@ -66,7 +66,7 @@ void _lis2dh_logging_face_update_display(movement_settings_t *settings, lis2dh_l
     watch_display_string(buf, 0);
 }
 
-void _lis2dh_logging_face_log_data(lis2dh_logger_state_t *logger_state) {
+static void _lis2dh_logging_face_log_data(lis2dh_logger_state_t *logger_state) {
     watch_date_time date_time = watch_rtc_get_date_time();
     // we get this call 15 minutes late; i.e. at 6:15 we're logging events for 6:00.
     // so: if we're at the top of the hour, roll the hour back too (7:00 task logs data for 6:45)

movement/watch_faces/demos/voltage_face.c

@@ -3,7 +3,7 @@
 #include "voltage_face.h"
 #include "watch.h"
 
-void _voltage_face_update_display() {
+static void _voltage_face_update_display(void) {
     char buf[14];
     float voltage = (float)watch_get_vcc_voltage() / 1000.0;
     sprintf(buf, "BA  %4.2f V", voltage);

movement/watch_faces/thermistor/thermistor_driver.c

@@ -2,7 +2,7 @@
 #include "watch.h"
 #include "watch_utility.h"
 
-void thermistor_driver_enable() {
+void thermistor_driver_enable(void) {
     // Enable the ADC peripheral, which we'll use to read the thermistor value.
     watch_enable_adc();
     // Enable analog circuitry on the sense pin, which is tied to the thermistor resistor divider.
@@ -13,7 +13,7 @@ void thermistor_driver_enable() {
     watch_set_pin_level(THERMISTOR_ENABLE_PIN, !THERMISTOR_ENABLE_VALUE);
 }
 
-void thermistor_driver_disable() {
+void thermistor_driver_disable(void) {
     // Disable the ADC peripheral.
     watch_disable_adc();
     // Disable analog circuitry on the sense pin to save power.
@@ -22,7 +22,7 @@ void thermistor_driver_disable() {
     watch_disable_digital_output(THERMISTOR_ENABLE_PIN);
 }
 
-float thermistor_driver_get_temperature() {
+float thermistor_driver_get_temperature(void) {
     // set the enable pin to the level that powers the thermistor circuit.
     watch_set_pin_level(THERMISTOR_ENABLE_PIN, THERMISTOR_ENABLE_VALUE);
     // get the sense pin level

movement/watch_faces/thermistor/thermistor_driver.h

@@ -12,8 +12,8 @@
 #define THERMISTOR_NOMINAL_RESISTANCE (10000.0)
 #define THERMISTOR_SERIES_RESISTANCE (10000.0)
 
-void thermistor_driver_enable();
-void thermistor_driver_disable();
-float thermistor_driver_get_temperature();
+void thermistor_driver_enable(void);
+void thermistor_driver_disable(void);
+float thermistor_driver_get_temperature(void);
 
 #endif // THERMISTOR_DRIVER_H_

movement/watch_faces/thermistor/thermistor_logging_face.c

@@ -4,7 +4,7 @@
 #include "thermistor_driver.h"
 #include "watch.h"
 
-void _thermistor_logging_face_log_data(thermistor_logger_state_t *logger_state) {
+static void _thermistor_logging_face_log_data(thermistor_logger_state_t *logger_state) {
     thermistor_driver_enable();
     watch_date_time date_time = watch_rtc_get_date_time();
     size_t pos = logger_state->data_points % THERMISTOR_LOGGING_NUM_DATA_POINTS;
@@ -16,7 +16,7 @@ void _thermistor_logging_face_log_data(thermistor_logger_state_t *logger_state)
     thermistor_driver_disable();
 }
 
-void _thermistor_logging_face_update_display(thermistor_logger_state_t *logger_state, bool in_fahrenheit, bool clock_mode_24h) {
+static void _thermistor_logging_face_update_display(thermistor_logger_state_t *logger_state, bool in_fahrenheit, bool clock_mode_24h) {
     int8_t pos = (logger_state->data_points - 1 - logger_state->display_index) % THERMISTOR_LOGGING_NUM_DATA_POINTS;
     char buf[14];
 

movement/watch_faces/thermistor/thermistor_readout_face.c

@@ -4,7 +4,7 @@
 #include "thermistor_driver.h"
 #include "watch.h"
 
-void _thermistor_readout_face_update_display(bool in_fahrenheit) {
+static void _thermistor_readout_face_update_display(bool in_fahrenheit) {
     thermistor_driver_enable();
     float temperature_c = thermistor_driver_get_temperature();
     char buf[14];