system_store.c File Reference

The active system store: holds the battery + bluetooth state and subscribes to the battery and connection services itself. The alarm is read through on demand. More...

#include "io/stores/system_store.h"

Data Structures
struct	[struct].s_state

Functions
static void	set_battery (int level, bool charging)
	Save the battery reading and notify.
static void	set_bluetooth (bool connected)
	Save the bluetooth state, buzzing the face's policy on a real transition, and notify.
static void	on_battery (BatteryChargeState state)
	Battery service handler: unpack the reading and save it.
static void	on_connection (bool connected)
	Connection service handler: save the phone link state.
void	system_store_subscribe (void(*cb)(void))
	Hand it the function to call when something changes (the screen redraw).
void	system_store_on_reconnect (void(*cb)(void))
	Hand it the function to call when the phone app link comes back after a drop.
void	system_store_init (SystemConfig cfg, const SystemSeed *seed)
	Start the store with its rules. Pass seed = NULL for normal use.
void	system_store_deinit (void)
	Stop tracking the battery + connection services.
int	system_store_battery (void)
	How full the battery is from 0 to 100.
bool	system_store_charging (void)
	True while the watch is plugged in.
bool	system_store_bluetooth (void)
	True when the phone link is up.
bool	system_store_next_alarm (time_t *out)
	When the wearer's next enabled alarm fires.

Variables
static struct	s_state
	The battery and bluetooth readings the store holds.
static bool	s_bt_initialized
	The first bluetooth reading only seeds. Later changes can buzz.
static bool	s_live
	False pins the seeded values so screenshots stay put.
static time_t	s_seed_alarm
	The pinned alarm used while not live.
static void(*)	s_cb (void)
	Called whenever a reading changes, so the face can redraw.
static BtVibePolicy	s_vibe
	What to buzz when the phone connects or drops.
static void(*)	s_reconnect (void)
	Fired on a real change from disconnected to connected.

Detailed Description

The active system store: holds the battery + bluetooth state and subscribes to the battery and connection services itself. The alarm is read through on demand.

Function Documentation

on_battery()

void on_battery ( BatteryChargeState state )

static

Battery service handler: unpack the reading and save it.

Parameters

state

The battery reading the service handed over.

on_connection()

void on_connection ( bool connected )

static

Connection service handler: save the phone link state.

Parameters

connected

True when the phone link just came up.

set_battery()

void set_battery ( int level, bool charging )

static

Save the battery reading and notify.

Parameters

level	Battery level from 0 to 100.
charging	True when plugged in.

set_bluetooth()

void set_bluetooth ( bool connected )

static

Save the bluetooth state, buzzing the face's policy on a real transition, and notify.

Parameters

connected

True when the phone link is up.