feat(ble): Give pycardium a connection event if a connection is already open

epicardium/ble/epic_ble_api.c

@@ -10,6 +10,7 @@
 
 #include "FreeRTOS.h"
 #include "queue.h"
+#include "timers.h"
 
 #include <stdint.h>
 #include <string.h>
@@ -24,8 +25,11 @@ static StaticQueue_t ble_event_queue_data;
 
 static uint8_t adv_data_buf[HCI_ADV_DATA_LEN];
 static uint8_t sr_data_buf[HCI_ADV_DATA_LEN];
-static dmEvt_t connection_open_event;
 
+static TimerHandle_t dm_timer;
+static StaticTimer_t dm_timer_data;
+
+static dmEvt_t connection_open_event;
 static bool connection_open;
 
 int epic_ble_free_event(struct epic_ble_event *e)
@@ -147,14 +151,39 @@ int epic_ble_is_connection_open(void)
 	return AppConnIsOpen();
 }
 
+void vDmTimerCallback()
+{
+	send_dm_event(&connection_open_event);
+}
+
 int epic_ble_init(void)
 {
+	if (dm_timer == NULL) {
+		dm_timer = xTimerCreateStatic(
+			"dmtimer",
+			1,
+			pdFALSE, /* one-shot */
+			0,
+			vDmTimerCallback,
+			&dm_timer_data);
+	}
+
 	epic_interrupt_enable(EPIC_INT_BLE);
+
+	if (connection_open) {
+		// Give pycardium a bit of time and then let it
+		// know that there already is an open connection
+		int millis = 100;
+		int ticks  = millis * (configTICK_RATE_HZ / 1000);
+		xTimerChangePeriod(dm_timer, ticks, 0);
+	}
+
 	return 0;
 }
 
 int epic_ble_deinit(void)
 {
+	xTimerStop(dm_timer, 0);
 	epic_interrupt_disable(EPIC_INT_BLE);
 	return 0;
 }