To achieve maximum throughput for the BLE dongle.

1. Set the maximum connection interval to 20ms.
2. Refactory pseudo_data_task()
3. Decrease size of regular_data_q

eis_regular_data.c

@@ -101,16 +101,16 @@ static void pseudo_data_task(void *pArg)
     void (*pfCallback)(channel_data_t *p_channel_data) = pArg;
     for (;;)
     {
-        vTaskDelay(pdMS_TO_TICKS(1));
         channel_data_t ch_data;
         memset(&ch_data, 0x00, sizeof(ch_data));
-        for (int i = 0; i < 1; i++)
+        pfCallback(&ch_data);
+        if (xQueueSend(regular_data_q, &ch_data, pdMS_TO_TICKS(50)) == pdFAIL)
         {
-            pfCallback(&ch_data);
-            if (xQueueSend(regular_data_q, &ch_data, pdMS_TO_TICKS(100)) == pdFAIL)
-            {
-                __BKPT(255);
-            }
+            __BKPT(255);
+        }
+        else
+        {
+            portYIELD();
         }
     }
 }
@@ -237,7 +237,7 @@ static void eis_regular_data_handler(ble_evt_t const *p_ble_evt, void *p_context
 
 void eis_regular_data_init(void)
 {
-    regular_data_q = xQueueCreate(512, sizeof(channel_data_t));
+    regular_data_q = xQueueCreate(64, sizeof(channel_data_t));
     if (regular_data_q == NULL)
     {
         // Will not get here unless there is insufficient RAM.

le_gap.c

@@ -41,7 +41,7 @@ void le_gap_init(const char *device_name, uint16_t usAppearance)
     ble_gap_conn_params_t gap_conn_params;
     memset(&gap_conn_params, 0, sizeof(gap_conn_params));
     gap_conn_params.min_conn_interval = MSEC_TO_UNITS(8, UNIT_1_25_MS);   /**< Minimum connection interval (7.5 ms) */
-    gap_conn_params.max_conn_interval = MSEC_TO_UNITS(400, UNIT_1_25_MS); /**< Maximum connection interval (400 ms). */
+    gap_conn_params.max_conn_interval = MSEC_TO_UNITS(20, UNIT_1_25_MS);  /**< Maximum connection interval (20 ms). */
     gap_conn_params.slave_latency     = 8;                                /**< Slave latency. */
     gap_conn_params.conn_sup_timeout  = MSEC_TO_UNITS(10000, UNIT_10_MS); /**< Connection supervisory timeout (10s). */