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autogen/sl_bluetooth.c

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+/***************************************************************************//**
+ * @file
+ * @brief Bluetooth initialization and event processing
+ *******************************************************************************
+ * # License
+ * <b>Copyright 2024 Silicon Laboratories Inc. www.silabs.com</b>
+ *******************************************************************************
+ *
+ * SPDX-License-Identifier: Zlib
+ *
+ * The licensor of this software is Silicon Laboratories Inc.
+ *
+ * This software is provided 'as-is', without any express or implied warranty.
+ * In no event will the authors be held liable for any damages arising from the
+ * use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software in a
+ *    product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ *
+ ******************************************************************************/
+
+#include <sl_common.h>
+#include "sl_bluetooth.h"
+#include "sl_assert.h"
+#include "sl_bt_stack_init.h"
+#include "sl_component_catalog.h"
+/**
+ * Internal stack function to start the Bluetooth stack.
+ *
+ * @return SL_STATUS_OK if the stack was successfully started
+ */
+extern sl_status_t sli_bt_system_start_bluetooth();
+
+void sl_bt_init(void)
+{
+  // Stack initialization could fail, e.g., due to out of memory.
+  // The failure could not be returned to user as the system initialization
+  // does not return an error code. Use the EFM_ASSERT to catch the failure,
+  // which requires either DEBUG_EFM or DEBUG_EFM_USER is defined.
+  sl_status_t err = sl_bt_stack_init();
+  EFM_ASSERT(err == SL_STATUS_OK);
+
+  // When neither Bluetooth on-demand start feature nor an RTOS is present, the
+  // Bluetooth stack is always started already at init-time.
+#if !defined(SL_CATALOG_BLUETOOTH_ON_DEMAND_START_PRESENT) && !defined(SL_CATALOG_KERNEL_PRESENT)
+  err = sli_bt_system_start_bluetooth();
+  EFM_ASSERT(err == SL_STATUS_OK);
+#endif
+}
+
+SL_WEAK void sl_bt_on_event(sl_bt_msg_t* evt)
+{
+  (void)(evt);
+}
+
+void sl_bt_process_event(sl_bt_msg_t *evt)
+{
+  sl_bt_on_event(evt);
+}
+
+#if !defined(SL_CATALOG_KERNEL_PRESENT)
+// When running in an RTOS, the stack events are processed in a dedicated
+// event processing task, and these functions are not used at all.
+
+SL_WEAK bool sl_bt_can_process_event(uint32_t len)
+{
+  (void)(len);
+  return true;
+}
+
+void sl_bt_step(void)
+{
+  sl_bt_msg_t evt;
+
+  sl_bt_run();
+  uint32_t event_len = sl_bt_event_pending_len();
+  // For preventing from data loss, the event will be kept in the stack's queue
+  // if application cannot process it at the moment.
+  if ((event_len == 0) || (!sl_bt_can_process_event(event_len))) {
+    return;
+  }
+
+  // Pop (non-blocking) a Bluetooth stack event from event queue.
+  sl_status_t status = sl_bt_pop_event(&evt);
+  if(status != SL_STATUS_OK){
+    return;
+  }
+  sl_bt_process_event(&evt);
+}
+#endif // !defined(SL_CATALOG_KERNEL_PRESENT)