flipperzero-firmware/applications/input/input.c

114 lines
3.4 KiB
C

#include <input/input.h>
#include <input_priv.h>
#include <stdio.h>
#include <furi.h>
static volatile bool initialized = false;
static SemaphoreHandle_t event;
static InputState input_state = {
false,
};
void input_task(void* p) {
uint32_t state_bits = 0;
StaticSemaphore_t event_semaphore;
uint8_t debounce_counters[INPUT_COUNT];
event = xSemaphoreCreateCountingStatic(1, 0, &event_semaphore);
if(!furi_create("input_state", (void*)&input_state, sizeof(input_state))) {
printf("[input_task] cannot create the input_state record\n");
furiac_exit(NULL);
}
FuriRecordSubscriber* input_state_record =
furi_open("input_state", false, false, NULL, NULL, NULL);
if(input_state_record == NULL) {
printf("[input_task] cannot open the input_state record\n");
furiac_exit(NULL);
}
if(!furi_create("input_events", NULL, 0)) {
printf("[input_task] cannot create the input_events record\n");
furiac_exit(NULL);
}
FuriRecordSubscriber* input_events_record =
furi_open("input_events", false, false, NULL, NULL, NULL);
if(input_events_record == NULL) {
printf("[input_task] cannot open the input_events record\n");
furiac_exit(NULL);
}
// we ready to work
furiac_ready();
initialized = true;
// Force state update
for(uint32_t i = 0; i < INPUT_COUNT; i++) {
debounce_counters[i] = DEBOUNCE_TICKS / 2;
}
for(;;) {
bool changed = false;
for(uint32_t i = 0; i < INPUT_COUNT; i++) {
bool input_state = app_gpio_read(input_gpio[i]) ^ input_invert[i];
if(input_state) {
if(debounce_counters[i] < DEBOUNCE_TICKS) {
debounce_counters[i] += 1;
changed = true;
}
} else {
if(debounce_counters[i] > 0) {
debounce_counters[i] -= 1;
changed = true;
}
}
}
if(!changed) {
uint32_t new_state_bits = 0;
for(uint32_t i = 0; i < INPUT_COUNT; i++) {
if(debounce_counters[i] == DEBOUNCE_TICKS) {
new_state_bits |= (1 << i);
}
}
uint32_t changed_bits = new_state_bits ^ state_bits;
if(changed_bits != 0) {
// printf("[input] %02x -> %02x\n", state_bits, new_state_bits);
InputState new_state = _BITS2STATE(new_state_bits);
furi_write(input_state_record, &new_state, sizeof(new_state));
state_bits = new_state_bits;
for(uint32_t i = 0; i < INPUT_COUNT; i++) {
if((changed_bits & (1 << i)) != 0) {
bool state = (new_state_bits & (1 << i)) != 0;
InputEvent event = {i, state};
furi_write(input_events_record, &event, sizeof(event));
}
}
}
// Sleep: wait for event
xSemaphoreTake(event, portMAX_DELAY);
} else {
osDelay(1);
}
}
}
void HAL_GPIO_EXTI_Callback(uint16_t pin) {
if(!initialized) return;
BaseType_t task_woken = pdFALSE;
// Ignore the result, as we do not care about repeated event during event processing.
xSemaphoreGiveFromISR(event, &task_woken);
if(task_woken) {
portYIELD_FROM_ISR(task_woken);
}
}