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#include "input_i.h"
#define GPIO_Read(input_pin) \
(HAL_GPIO_ReadPin((GPIO_TypeDef*)input_pin.pin->port, input_pin.pin->pin) ^ \
input_pin.pin->inverted)
static Input* input = NULL;
inline static void input_timer_start(osTimerId_t timer_id, uint32_t ticks) {
TimerHandle_t hTimer = (TimerHandle_t)timer_id;
furi_check(xTimerChangePeriod(hTimer, ticks, portMAX_DELAY) == pdPASS);
}
inline static void input_timer_stop(osTimerId_t timer_id) {
TimerHandle_t hTimer = (TimerHandle_t)timer_id;
furi_check(xTimerStop(hTimer, portMAX_DELAY) == pdPASS);
// xTimerStop is not actually stopping timer,
// Instead it places stop event into timer queue
// This code ensures that timer is stopped
while(xTimerIsTimerActive(hTimer) == pdTRUE) osDelay(1);
}
void input_press_timer_callback(void* arg) {
InputPinState* input_pin = arg;
InputEvent event;
event.sequence = input_pin->counter;
event.key = input_pin->pin->key;
input_pin->press_counter++;
if(input_pin->press_counter == INPUT_LONG_PRESS_COUNTS) {
event.type = InputTypeLong;
furi_pubsub_publish(input->event_pubsub, &event);
} else if(input_pin->press_counter > INPUT_LONG_PRESS_COUNTS) {
input_pin->press_counter--;
event.type = InputTypeRepeat;
furi_pubsub_publish(input->event_pubsub, &event);
}
}
void input_isr(void* _ctx) {
osThreadFlagsSet(input->thread, INPUT_THREAD_FLAG_ISR);
}
#ifdef SRV_CLI
void input_cli_send(Cli* cli, string_t args, void* context) {
InputEvent event;
// Get first word as key name
string_t key_name;
string_init(key_name);
size_t ws = string_search_char(args, ' ');
if(ws == STRING_FAILURE) {
printf("Invalid arguments. Use `input_send KEY TYPE`.");
string_clear(key_name);
return;
} else {
string_set_n(key_name, args, 0, ws);
string_right(args, ws);
string_strim(args);
}
// Check key name and set event key
if(!string_cmp(key_name, "up")) {
event.key = InputKeyUp;
} else if(!string_cmp(key_name, "down")) {
event.key = InputKeyDown;
} else if(!string_cmp(key_name, "left")) {
event.key = InputKeyLeft;
} else if(!string_cmp(key_name, "right")) {
event.key = InputKeyRight;
} else if(!string_cmp(key_name, "ok")) {
event.key = InputKeyOk;
} else if(!string_cmp(key_name, "back")) {
event.key = InputKeyBack;
} else {
printf("Invalid key name. Valid keys: `up`, `down`, `left`, `right`, `back`, `ok`.");
string_clear(key_name);
return;
}
string_clear(key_name);
// Check the rest of args string and set event type
if(!string_cmp(args, "press")) {
event.type = InputTypePress;
} else if(!string_cmp(args, "release")) {
event.type = InputTypeRelease;
} else if(!string_cmp(args, "short")) {
event.type = InputTypeShort;
} else if(!string_cmp(args, "long")) {
event.type = InputTypeLong;
} else {
printf("Ivalid type. Valid types: `press`, `release`, `short`, `long`.");
return;
}
// Publish input event
furi_pubsub_publish(input->event_pubsub, &event);
}
static void input_cli_dump_events_callback(const void* value, void* ctx) {
furi_assert(value);
furi_assert(ctx);
osMessageQueueId_t input_queue = ctx;
osMessageQueuePut(input_queue, value, 0, osWaitForever);
}
static void input_cli_dump(Cli* cli, string_t args, void* context) {
osMessageQueueId_t input_queue = osMessageQueueNew(8, sizeof(InputEvent), NULL);
FuriPubSubSubscription* input_subscription =
furi_pubsub_subscribe(input->event_pubsub, input_cli_dump_events_callback, input_queue);
bool stop = false;
InputEvent input_event;
while(!stop) {
if(osMessageQueueGet(input_queue, &input_event, NULL, 100) == osOK) {
printf(
"key: %s type: %s\r\n",
input_get_key_name(input_event.key),
input_get_type_name(input_event.type));
}
if(cli_cmd_interrupt_received(cli)) {
stop = true;
}
}
furi_pubsub_unsubscribe(input->event_pubsub, input_subscription);
osMessageQueueDelete(input_queue);
}
#endif
const char* input_get_key_name(InputKey key) {
for(size_t i = 0; i < input_pins_count; i++) {
if(input_pins[i].key == key) {
return input_pins[i].name;
}
}
return "Unknown";
}
const char* input_get_type_name(InputType type) {
switch(type) {
case InputTypePress:
return "Press";
case InputTypeRelease:
return "Release";
case InputTypeShort:
return "Short";
case InputTypeLong:
return "Long";
case InputTypeRepeat:
return "Repeat";
}
return "Unknown";
}
int32_t input_srv() {
input = furi_alloc(sizeof(Input));
input->thread = osThreadGetId();
input->event_pubsub = furi_pubsub_alloc();
furi_record_create("input_events", input->event_pubsub);
#ifdef SRV_CLI
input->cli = furi_record_open("cli");
if(input->cli) {
cli_add_command(
input->cli, "input_send", CliCommandFlagParallelSafe, input_cli_send, NULL);
cli_add_command(
input->cli, "input_dump", CliCommandFlagParallelSafe, input_cli_dump, NULL);
}
#endif
input->pin_states = furi_alloc(input_pins_count * sizeof(InputPinState));
for(size_t i = 0; i < input_pins_count; i++) {
GpioPin gpio = {(GPIO_TypeDef*)input_pins[i].port, (uint16_t)input_pins[i].pin};
hal_gpio_add_int_callback(&gpio, input_isr, NULL);
input->pin_states[i].pin = &input_pins[i];
input->pin_states[i].state = GPIO_Read(input->pin_states[i]);
input->pin_states[i].debounce = INPUT_DEBOUNCE_TICKS_HALF;
input->pin_states[i].press_timer =
osTimerNew(input_press_timer_callback, osTimerPeriodic, &input->pin_states[i], NULL);
input->pin_states[i].press_counter = 0;
}
while(1) {
bool is_changing = false;
for(size_t i = 0; i < input_pins_count; i++) {
bool state = GPIO_Read(input->pin_states[i]);
if(input->pin_states[i].debounce > 0 &&
input->pin_states[i].debounce < INPUT_DEBOUNCE_TICKS) {
is_changing = true;
input->pin_states[i].debounce += (state ? 1 : -1);
} else if(input->pin_states[i].state != state) {
input->pin_states[i].state = state;
// Common state info
InputEvent event;
event.key = input->pin_states[i].pin->key;
// Short / Long / Repeat timer routine
if(state) {
input->counter++;
input->pin_states[i].counter = input->counter;
event.sequence = input->pin_states[i].counter;
input_timer_start(input->pin_states[i].press_timer, INPUT_PRESS_TICKS);
} else {
event.sequence = input->pin_states[i].counter;
input_timer_stop(input->pin_states[i].press_timer);
if(input->pin_states[i].press_counter < INPUT_LONG_PRESS_COUNTS) {
event.type = InputTypeShort;
furi_pubsub_publish(input->event_pubsub, &event);
}
input->pin_states[i].press_counter = 0;
}
// Send Press/Release event
event.type = input->pin_states[i].state ? InputTypePress : InputTypeRelease;
furi_pubsub_publish(input->event_pubsub, &event);
}
}
if(is_changing) {
osDelay(1);
} else {
osThreadFlagsWait(INPUT_THREAD_FLAG_ISR, osFlagsWaitAny, osWaitForever);
}
}
return 0;
}
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