Periodically check int lines instead of relying on interrupts

src/main/main.cpp

@@ -6,7 +6,6 @@
 
 #include "freertos/portmacro.h"
 
-#include "gpios.hpp"
 #include "i2c.hpp"
 #include "system_events.hpp"
 #include "tinyfsm.hpp"
@@ -18,32 +17,12 @@
 
 extern "C" void app_main(void) {
   ESP_ERROR_CHECK(drivers::init_i2c());
-  SemaphoreHandle_t gpios_semphr = drivers::Gpios::CreateReadPending();
-  SemaphoreHandle_t samd_semphr = drivers::Samd::CreateReadPending();
-
-  // Semaphores must be empty before being added to a queue set. Hence all this
-  // weird early init stuff; by being explicit about initialisation order, we're
-  // able to handle GPIO ISR notifcations + system events from the same task,
-  // and a little mess with worth not needing to allocate a whole extra stack.
-  QueueSetHandle_t set = xQueueCreateSet(3);
-  auto* event_queue = events::queues::SystemAndAudio();
-  xQueueAddToSet(event_queue->has_events(), set);
-  xQueueAddToSet(gpios_semphr, set);
-  xQueueAddToSet(samd_semphr, set);
 
   tinyfsm::FsmList<system_fsm::SystemState, ui::UiState,
                    audio::AudioState>::start();
 
+  auto* event_queue = events::queues::SystemAndAudio();
   while (1) {
-    QueueSetMemberHandle_t member = xQueueSelectFromSet(set, portMAX_DELAY);
-    if (member == event_queue->has_events()) {
-      event_queue->Service(0);
-    } else if (member == gpios_semphr) {
-      xSemaphoreTake(member, 0);
-      events::System().Dispatch(system_fsm::internal::GpioInterrupt{});
-    } else if (member == samd_semphr) {
-      xSemaphoreTake(member, 0);
-      events::System().Dispatch(system_fsm::internal::SamdInterrupt{});
-    }
+    event_queue->Service(portMAX_DELAY);
   }
 }