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freertos: add support for polled data sources

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This commit is contained in:
Matthias Ringwald 2017-04-20 22:14:40 +02:00
parent 40ad9be2e8
commit 1ca802329b
1 changed files with 51 additions and 23 deletions
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74
platform/freertos/btstack_run_loop_freertos_single_threaded.c
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@ -70,6 +70,7 @@ static EventGroupHandle_t btstack_run_loop_event_group;
// the run loop
static btstack_linked_list_t timers;
static btstack_linked_list_t data_sources;
static uint32_t btstack_run_loop_freertos_single_threaded_get_time_ms(void){
return hal_time_ms();
@ -158,35 +159,46 @@ static void btstack_run_loop_freertos_single_threaded_task(void *pvParameter){
while (1) {
// get next timeout
// process data sources
btstack_data_source_t *ds;
btstack_data_source_t *next;
for (ds = (btstack_data_source_t *) data_sources; ds != NULL ; ds = next){
next = (btstack_data_source_t *) ds->item.next; // cache pointer to next data_source to allow data source to remove itself
if (ds->flags & DATA_SOURCE_CALLBACK_POLL){
ds->process(ds, DATA_SOURCE_CALLBACK_POLL);
}
}
// process registered function calls on run loop thread
while (1){
function_call_t message = { NULL, NULL };
BaseType_t res = xQueueReceive( btstack_run_loop_queue, &message, 0);
if (res == pdFALSE) break;
if (message.fn){
message.fn(message.arg);
}
}
// process timers and get et next timeout
uint32_t timeout_ms = portMAX_DELAY;
log_debug("RL: portMAX_DELAY %u", portMAX_DELAY);
if (timers) {
while (timers) {
btstack_timer_source_t * ts = (btstack_timer_source_t *) timers;
log_debug("RL: have timer %p", ts);
uint32_t now = btstack_run_loop_freertos_single_threaded_get_time_ms();
log_debug("RL: now %u, expires %u", now, ts->timeout);
if (ts->timeout < now){
// remove timer before processing it to allow handler to re-register with run loop
btstack_run_loop_remove_timer(ts);
log_debug("RL: first timer %p", ts->process);
ts->process(ts);
continue;
if (ts->timeout > now){
timeout_ms = ts->timeout - now;
break;
}
timeout_ms = ts->timeout - now;
// remove timer before processing it to allow handler to re-register with run loop
btstack_run_loop_remove_timer(ts);
log_debug("RL: first timer %p", ts->process);
ts->process(ts);
}
// wait for timeout of event group
// wait for timeout or event group
log_debug("RL: wait with timeout %u", (int) timeout_ms);
xEventGroupWaitBits(btstack_run_loop_event_group, EVENT_GROUP_FLAG_RUN_LOOP, 1, 0, pdMS_TO_TICKS(timeout_ms));
// try pop function call
function_call_t message = { NULL, NULL };
BaseType_t res = xQueueReceive( btstack_run_loop_queue, &message, 0);
if (res == pdTRUE && message.fn){
// execute code on run loop
message.fn(message.arg);
}
}
}
@ -196,6 +208,22 @@ static void btstack_run_loop_freertos_single_threaded_execute(void) {
// btstack_run_loop_freertos_single_threaded_task(NULL);
}
static void btstack_run_loop_freertos_single_threaded_add_data_source(btstack_data_source_t *ds){
btstack_linked_list_add(&data_sources, (btstack_linked_item_t *) ds);
}
static int btstack_run_loop_freertos_single_threaded_remove_data_source(btstack_data_source_t *ds){
return btstack_linked_list_remove(&data_sources, (btstack_linked_item_t *) ds);
}
static void btstack_run_loop_freertos_single_threaded_enable_data_source_callbacks(btstack_data_source_t * ds, uint16_t callback_types){
ds->flags |= callback_types;
}
static void btstack_run_loop_freertos_single_threaded_disable_data_source_callbacks(btstack_data_source_t * ds, uint16_t callback_types){
ds->flags &= ~callback_types;
}
static void btstack_run_loop_freertos_single_threaded_init(void){
timers = NULL;
@ -217,10 +245,10 @@ const btstack_run_loop_t * btstack_run_loop_freertos_single_threaded_get_instanc
static const btstack_run_loop_t btstack_run_loop_freertos_single_threaded = {
&btstack_run_loop_freertos_single_threaded_init,
NULL,
NULL,
NULL,
NULL,
&btstack_run_loop_freertos_single_threaded_add_data_source,
&btstack_run_loop_freertos_single_threaded_remove_data_source,
&btstack_run_loop_freertos_single_threaded_enable_data_source_callbacks,
&btstack_run_loop_freertos_single_threaded_disable_data_source_callbacks,
&btstack_run_loop_freertos_single_threaded_set_timer,
&btstack_run_loop_freertos_single_threaded_add_timer,
&btstack_run_loop_freertos_single_threaded_remove_timer,