ble_main.c

/* card10:
 * Copied from lib/sdk/Libraries/BTLE/stack/ble-profiles/sources/apps/fit/fit_main.c
 *
 * Also have a look at lib/sdk/Applications/EvKitExamples/BLE_fit/fit_main.c which has some changes
 * to this file regarding handling of OOB paring data
 *
 * This file contains some application logic taken from the "fit" example.
 *
 * Things have been renamed:
 * fit -> ble
 * Fit -> Ble
 * FIT -> BLE
 */
/* clang-format off */
/* clang-formet turned off for easier diffing against orginal file */
#include <stdio.h>
#include <string.h>
#include "wsf_types.h"
#include "util/bstream.h"
#include "wsf_msg.h"
#include "wsf_trace.h"
#include "l2c_api.h"
#include "dm_api.h"
#include "att_api.h"
#include "gatt/gatt_api.h"
#include "smp_api.h"
#include "app_api.h"
#include "app_db.h"
#include "svc_ch.h"
#include "svc_core.h"
#include "svc_dis.h"
#include "svc_batt.h"
#include "svc_hid.h"
#include "profiles/gap_api.h"
#include "cccd.h"
#include "ess.h"
#include "hid.h"
#include "uart.h"

#include "ble_api.h"
#include "epicardium.h"
#include "modules/log.h"
#include "modules/config.h"

#define SCAN_REPORTS_NUM	16

static bool active;
static uint8_t advertising_mode = APP_MODE_NONE;
static uint8_t advertising_mode_target = APP_MODE_NONE;
static struct epic_scan_report scan_reports[SCAN_REPORTS_NUM];
static int scan_reports_head;
static int scan_reports_tail;

/**************************************************************************************************
  Configurable Parameters
**************************************************************************************************/

/*! configurable parameters for advertising */
static const appAdvCfg_t bleAdvCfg =
{
  {0,             0},                  /*! Advertising durations in ms */
  {500/0.625,     0}                   /*! Advertising intervals in 0.625 ms units */
};

/*! configurable parameters for slave */
static const appSlaveCfg_t bleSlaveCfg =
{
  1,                                      /*! Maximum connections */
};

/*! configurable parameters for security */
static const appSecCfg_t bleSecCfg =
{
  .auth = DM_AUTH_MITM_FLAG | DM_AUTH_BOND_FLAG | DM_AUTH_SC_FLAG, /*! Authentication and bonding flags */
  .iKeyDist = 0,                               /*! Initiator key distribution flags */
  .rKeyDist = DM_KEY_DIST_LTK,                 /*! Responder key distribution flags */
  .oob=FALSE,                                  /*! TRUE if Out-of-band pairing data is present */
  .initiateSec = TRUE                          /*! TRUE to initiate security upon connection */
};

/*! configurable parameters for connection parameter update */
static const appUpdateCfg_t bleUpdateCfg =
{
  6000,                                   /*! Connection idle period in ms before attempting
                                              connection parameter update; set to zero to disable */
  30/1.25,                                 /*! Minimum connection interval in 1.25ms units.
                                              Values < 8 didn't work with my Tinkpad T470 */
  40/1.25,                                /*! Maximum connection interval in 1.25ms units */
  0,                                      /*! Connection latency */
  9000/10,                                /*! Supervision timeout in 10ms units */
  5                                       /*! Number of update attempts before giving up */
};

/*! SMP security parameter configuration */
static const smpCfg_t bleSmpCfg =
{
  .attemptTimeout = 3000,                          /*! 'Repeated attempts' timeout in msec */
  .ioCap = SMP_IO_DISP_YES_NO,                     /*! I/O Capability */
  .minKeyLen = 16,                                 /*! Minimum encryption key length */
  .maxKeyLen = 16,                                 /*! Maximum encryption key length */
  .maxAttempts = 3,                                /*! Attempts to trigger 'repeated attempts' timeout */
  .auth = DM_AUTH_MITM_FLAG | DM_AUTH_SC_FLAG,     /*! Device authentication requirements */
  .maxAttemptTimeout = 64000,                      /*! Maximum 'Repeated attempts' timeout in msec */
  .attemptDecTimeout = 64000,                      /*! Time msec before attemptExp decreases */
  .attemptExp = 2,                                 /*! Exponent to raise attemptTimeout on maxAttempts */
};

/*! Configurable parameters for service and characteristic discovery */
static const appDiscCfg_t bleDiscCfg =
{
  FALSE                                   /*! TRUE to wait for a secure connection before initiating discovery */
};

/* Configuration structure */
static const attCfg_t bleAttCfg =
{
  15,                                  /* ATT server service discovery connection idle timeout in seconds */
  241,                                 /* desired ATT MTU */
  ATT_MAX_TRANS_TIMEOUT,               /* transaction timeout in seconds */
  1                                    /* number of queued prepare writes supported by server */
};

/**************************************************************************************************
  Advertising Data
**************************************************************************************************/

/*! advertising data, discoverable mode */
static const uint8_t bleAdvDataDisc[] =
{
  /*! flags */
  2,                                      /*! length */
  DM_ADV_TYPE_FLAGS,                      /*! AD type */
  DM_FLAG_LE_LIMITED_DISC |               /*! flags */
  DM_FLAG_LE_BREDR_NOT_SUP,

  3,
  DM_ADV_TYPE_APPEARANCE,
  UINT16_TO_BYTES(CH_APPEAR_WATCH),

  /*! service UUID list */
  17,
  DM_ADV_TYPE_128_UUID_PART,
  CARD10_UUID_SUFFIX, 0x0, CARD10_UUID_PREFIX,

  2,                                      /*! length */
  DM_ADV_TYPE_TX_POWER,                   /*! AD type */
  0,                                      /*! tx power */
};

/*! advertising data, discoverable mode with HID service*/
static const uint8_t bleAdvDataDiscHID[] =
{
  /*! flags */
  2,                                      /*! length */
  DM_ADV_TYPE_FLAGS,                      /*! AD type */
  DM_FLAG_LE_LIMITED_DISC |               /*! flags */
  DM_FLAG_LE_BREDR_NOT_SUP,

  3,
  DM_ADV_TYPE_APPEARANCE,
  UINT16_TO_BYTES(CH_APPEAR_WATCH),

  /*! service UUID list */
  17,
  DM_ADV_TYPE_128_UUID_PART,
  CARD10_UUID_SUFFIX, 0x0, CARD10_UUID_PREFIX,

  3,                                      /*! length */
  DM_ADV_TYPE_16_UUID_PART,               /*! AD type */
  UINT16_TO_BYTES(ATT_UUID_HID_SERVICE)
};

/*! scan data, discoverable mode */
uint8_t bleScanDataDisc[] =
{
  /*! device name */
  14,                                      /*! length */
  DM_ADV_TYPE_LOCAL_NAME,                 /*! AD type */
  'c','a','r','d','1','0','-','0','0','0','0','0','0',

  3,                                      /*! length */
  DM_ADV_TYPE_16_SOLICIT,                 /*! AD type */
  UINT16_TO_BYTES(ATT_UUID_CURRENT_TIME_SERVICE),
};

/*! advertising data, connectable mode */
static const uint8_t bleAdvDataConn[] =
{
  /*! flags */
  2,                                      /*! length */
  DM_ADV_TYPE_FLAGS,                      /*! AD type */
  DM_FLAG_LE_BREDR_NOT_SUP,
};

static const appMasterCfg_t scannerMasterCfg =
{
  420,                                     /*! The scan interval, in 0.625 ms units */
  420,                                     /*! The scan window, in 0.625 ms units  */
  0,                                       /*! The scan duration in ms */
  DM_DISC_MODE_NONE,                       /*! The GAP discovery mode */
  DM_SCAN_TYPE_PASSIVE
                                           /*!< The scan type (active or passive) */
};

/**************************************************************************************************
  Client Characteristic Configuration Descriptors
**************************************************************************************************/

/*! client characteristic configuration descriptors settings, indexed by above enumeration */
static const attsCccSet_t bleCccSet[BLE_NUM_CCC_IDX] =
{
  /* cccd handle          value range               security level */
  {GATT_SC_CH_CCC_HDL,    ATT_CLIENT_CFG_INDICATE,  DM_SEC_LEVEL_NONE},   /* BLE_GATT_SC_CCC_IDX */
  {BATT_LVL_CH_CCC_HDL,   ATT_CLIENT_CFG_NOTIFY,    DM_SEC_LEVEL_NONE},   /* BLE_BATT_LVL_CCC_IDX */
  {ESS_TEMP_CH_CCC_HDL,   ATT_CLIENT_CFG_NOTIFY,    DM_SEC_LEVEL_NONE},   /* BLE_ESS_TEMP_CCC_IDX */
  {ESS_HUMI_CH_CCC_HDL,   ATT_CLIENT_CFG_NOTIFY,    DM_SEC_LEVEL_NONE},   /* BLE_ESS_HUMI_CCC_IDX */
  {ESS_PRES_CH_CCC_HDL,   ATT_CLIENT_CFG_NOTIFY,    DM_SEC_LEVEL_NONE},   /* BLE_ESS_PRES_CCC_IDX */
  {HID_MOUSE_BOOT_IN_CH_CCC_HDL,        ATT_CLIENT_CFG_NOTIFY,    DM_SEC_LEVEL_NONE},    /* HIDAPP_MBI_CCC_HDL */
  {HID_KEYBOARD_BOOT_IN_CH_CCC_HDL,     ATT_CLIENT_CFG_NOTIFY,    DM_SEC_LEVEL_NONE},    /* HIDAPP_KBI_CCC_HDL */
  {HID_INPUT_REPORT_1_CH_CCC_HDL,       ATT_CLIENT_CFG_NOTIFY,    DM_SEC_LEVEL_NONE},    /* HIDAPP_IN_KEYBOARD_CCC_HDL */
  {HID_INPUT_REPORT_2_CH_CCC_HDL,       ATT_CLIENT_CFG_NOTIFY,    DM_SEC_LEVEL_NONE},    /* HIDAPP_IN_MOUSE_CCC_HDL */
  {HID_INPUT_REPORT_3_CH_CCC_HDL,       ATT_CLIENT_CFG_NOTIFY,    DM_SEC_LEVEL_NONE},    /* HIDAPP_IN_CONSUMER_CCC_HDL */
  {ESS_IAQ_CH_CCC_HDL,    ATT_CLIENT_CFG_NOTIFY,    DM_SEC_LEVEL_NONE},   /* BLE_ESS_IAQ_CCC_IDX */
  {UART_TX_CH_CCC_HDL,    ATT_CLIENT_CFG_NOTIFY,    DM_SEC_LEVEL_NONE},   /* BLE_ESS_IAQ_CCC_IDX */
};

/**************************************************************************************************
  Global Variables
**************************************************************************************************/

/*! WSF handler ID */
wsfHandlerId_t bleHandlerId;

static dmConnId_t pair_connId = DM_CONN_ID_NONE;
static uint32_t pair_confirm_value;
static appDbHdl_t last_pairing = NULL;

static void BleHandler(wsfEventMask_t event, wsfMsgHdr_t *pMsg);

static const char * const att_events[] = {
	"ATTC_FIND_INFO_RSP",
	"ATTC_FIND_BY_TYPE_VALUE_RSP",
	"ATTC_READ_BY_TYPE_RSP",
	"ATTC_READ_RSP",
	"ATTC_READ_LONG_RSP",
	"ATTC_READ_MULTIPLE_RSP",
	"ATTC_READ_BY_GROUP_TYPE_RSP",
	"ATTC_WRITE_RSP",
	"ATTC_WRITE_CMD_RSP",
	"ATTC_PREPARE_WRITE_RSP",
	"ATTC_EXECUTE_WRITE_RSP",
	"ATTC_HANDLE_VALUE_NTF",
	"ATTC_HANDLE_VALUE_IND",
	/* ATT server callback events */
	"ATTS_HANDLE_VALUE_CNF",
	"ATTS_CCC_STATE_IND",
	"ATTS_DB_HASH_CALC_CMPL_IND",
	/* ATT common callback events */
	"ATT_MTU_UPDATE_IND"
};

static const char * const dm_events[] = {
    "DM_RESET_CMPL_IND",
    "DM_ADV_START_IND",
    "DM_ADV_STOP_IND",
    "DM_ADV_NEW_ADDR_IND",
    "DM_SCAN_START_IND",
    "DM_SCAN_STOP_IND",
    "DM_SCAN_REPORT_IND",
    "DM_CONN_OPEN_IND",
    "DM_CONN_CLOSE_IND",
    "DM_CONN_UPDATE_IND",
    "DM_SEC_PAIR_CMPL_IND",
    "DM_SEC_PAIR_FAIL_IND",
    "DM_SEC_ENCRYPT_IND",
    "DM_SEC_ENCRYPT_FAIL_IND",
    "DM_SEC_AUTH_REQ_IND",
    "DM_SEC_KEY_IND",
    "DM_SEC_LTK_REQ_IND",
    "DM_SEC_PAIR_IND",
    "DM_SEC_SLAVE_REQ_IND",
    "DM_SEC_CALC_OOB_IND",
    "DM_SEC_ECC_KEY_IND",
    "DM_SEC_COMPARE_IND",
    "DM_SEC_KEYPRESS_IND",
    "DM_PRIV_RESOLVED_ADDR_IND",
    "DM_PRIV_GENERATE_ADDR_IND",
    "DM_CONN_READ_RSSI_IND",
    "DM_PRIV_ADD_DEV_TO_RES_LIST_IND",
    "DM_PRIV_REM_DEV_FROM_RES_LIST_IND",
    "DM_PRIV_CLEAR_RES_LIST_IND",
    "DM_PRIV_READ_PEER_RES_ADDR_IND",
    "DM_PRIV_READ_LOCAL_RES_ADDR_IND",
    "DM_PRIV_SET_ADDR_RES_ENABLE_IND",
    "DM_REM_CONN_PARAM_REQ_IND",
    "DM_CONN_DATA_LEN_CHANGE_IND",
    "DM_CONN_WRITE_AUTH_TO_IND",
    "DM_CONN_AUTH_TO_EXPIRED_IND",
    "DM_PHY_READ_IND",
    "DM_PHY_SET_DEF_IND",
    "DM_PHY_UPDATE_IND",
    "DM_ADV_SET_START_IND",
    "DM_ADV_SET_STOP_IND",
    "DM_SCAN_REQ_RCVD_IND",
    "DM_EXT_SCAN_START_IND",
    "DM_EXT_SCAN_STOP_IND",
    "DM_EXT_SCAN_REPORT_IND",
    "DM_PER_ADV_SET_START_IND",
    "DM_PER_ADV_SET_STOP_IND",
    "DM_PER_ADV_SYNC_EST_IND",
    "DM_PER_ADV_SYNC_EST_FAIL_IND",
    "DM_PER_ADV_SYNC_LOST_IND",
    "DM_PER_ADV_SYNC_TRSF_EST_IND",
    "DM_PER_ADV_SYNC_TRSF_EST_FAIL_IND",
    "DM_PER_ADV_SYNC_TRSF_IND",
    "DM_PER_ADV_SET_INFO_TRSF_IND",
    "DM_PER_ADV_REPORT_IND",
    "DM_REMOTE_FEATURES_IND",
    "DM_READ_REMOTE_VER_INFO_IND",
    "DM_CONN_IQ_REPORT_IND",
    "DM_CTE_REQ_FAIL_IND",
    "DM_CONN_CTE_RX_SAMPLE_START_IND",
    "DM_CONN_CTE_RX_SAMPLE_STOP_IND",
    "DM_CONN_CTE_TX_CFG_IND",
    "DM_CONN_CTE_REQ_START_IND",
    "DM_CONN_CTE_REQ_STOP_IND",
    "DM_CONN_CTE_RSP_START_IND",
    "DM_CONN_CTE_RSP_STOP_IND",
    "DM_READ_ANTENNA_INFO_IND",
    "DM_L2C_CMD_REJ_IND",
    "DM_ERROR_IND",
    "DM_HW_ERROR_IND",
    "DM_VENDOR_SPEC_IND"
};

static const char * const l2c_coc_events[] = {
	"L2C_COC_CONNECT_IND",
	"L2C_COC_DISCONNECT_IND",
	"L2C_COC_DATA_IND",
	"L2C_COC_DATA_CNF"
};
/*************************************************************************************************/
/*!
 *  \brief  Application DM callback.
 *
 *  \param  pDmEvt  DM callback event
 *
 *  \return None.
 */
/*************************************************************************************************/
static void bleDmCback(dmEvt_t *pDmEvt)
{
  dmEvt_t *pMsg;
  uint16_t len;

  len = DmSizeOfEvt(pDmEvt);

  if ((pMsg = WsfMsgAlloc(len)) != NULL)
  {
    memcpy(pMsg, pDmEvt, len);
    WsfMsgSend(bleHandlerId, pMsg);
  }
}

/*************************************************************************************************/
/*!
 *  \brief  Application ATT callback.
 *
 *  \param  pEvt    ATT callback event
 *
 *  \return None.
 */
/*************************************************************************************************/
static void bleAttCback(attEvt_t *pEvt)
{
  attEvt_t *pMsg;

  if ((pMsg = WsfMsgAlloc(sizeof(attEvt_t) + pEvt->valueLen)) != NULL)
  {
    memcpy(pMsg, pEvt, sizeof(attEvt_t));
    pMsg->pValue = (uint8_t *) (pMsg + 1);
    memcpy(pMsg->pValue, pEvt->pValue, pEvt->valueLen);
    WsfMsgSend(bleHandlerId, pMsg);
  }
}

/*************************************************************************************************/
/*!
 *  \brief  Application ATTS client characteristic configuration callback.
 *
 *  \param  pDmEvt  DM callback event
 *
 *  \return None.
 */
/*************************************************************************************************/
static void bleCccCback(attsCccEvt_t *pEvt)
{
  attsCccEvt_t  *pMsg;
  appDbHdl_t    dbHdl;

  /* if CCC not set from initialization and there's a device record */
  if ((pEvt->handle != ATT_HANDLE_NONE) &&
      ((dbHdl = AppDbGetHdl((dmConnId_t) pEvt->hdr.param)) != APP_DB_HDL_NONE))
  {
    /* store value in device database */
    AppDbSetCccTblValue(dbHdl, pEvt->idx, pEvt->value);
    AppDbNvmStoreCccTbl(dbHdl);
  }

  if ((pMsg = WsfMsgAlloc(sizeof(attsCccEvt_t))) != NULL)
  {
    memcpy(pMsg, pEvt, sizeof(attsCccEvt_t));
    WsfMsgSend(bleHandlerId, pMsg);
  }
}

/*************************************************************************************************/
/*!
 *  \brief  Process CCC state change.
 *
 *  \param  pMsg    Pointer to message.
 *
 *  \return None.
 */
/*************************************************************************************************/
static void bleProcCccState(bleMsg_t *pMsg)
{
  APP_TRACE_INFO3("ccc state ind value:%d handle:%d idx:%d", pMsg->ccc.value, pMsg->ccc.handle, pMsg->ccc.idx);

  /* handle battery level CCC */
  switch(pMsg->ccc.idx) {
    case BLE_ESS_TEMP_CCC_IDX:
    case BLE_ESS_HUMI_CCC_IDX:
    case BLE_ESS_PRES_CCC_IDX:
    case BLE_ESS_IAQ_CCC_IDX:
      bleESS_ccc_update();
    break;
  };
}

/*************************************************************************************************/
/*!
 *  \brief  Perform UI actions on connection close.
 *
 *  \param  pMsg    Pointer to message.
 *
 *  \return None.
 */
/*************************************************************************************************/
static void bleClose(bleMsg_t *pMsg)
{
  /* stop battery measurement */
  bleESS_ccc_update();
  GapClearDeviceName();
}

/*************************************************************************************************/
/*!
 *  \brief  Set up advertising and other procedures that need to be performed after
 *          device reset.
 *
 *  \param  pMsg    Pointer to message.
 *
 *  \return None.
 */
/*************************************************************************************************/
static void bleSetup(bleMsg_t *pMsg)
{
  char buf[32];
  char a, b, c, d, e, f, K;

  int result = epic_config_get_string("ble_mac", buf, sizeof(buf));
  if (result == 0)
  {
    if (sscanf(buf, "%c%c:%c%c:%c%c:%c%c:%c%c:%c%c", &K,&K,&K,&K,&K,&K, &a, &b, &c, &d, &e, &f) == 12)
    {
      bleScanDataDisc[9]  = a;
      bleScanDataDisc[10] = b;
      bleScanDataDisc[11] = c;
      bleScanDataDisc[12] = d;
      bleScanDataDisc[13] = e;
      bleScanDataDisc[14] = f;
    }
  }

  /* set advertising and scan response data for discoverable mode */
  if(config_get_boolean_with_default("ble_hid_enable", false)) {
    AppAdvSetData(APP_ADV_DATA_DISCOVERABLE, sizeof(bleAdvDataDiscHID), (uint8_t *) bleAdvDataDiscHID);
  } else {
    AppAdvSetData(APP_ADV_DATA_DISCOVERABLE, sizeof(bleAdvDataDisc), (uint8_t *) bleAdvDataDisc);
  }

  AppAdvSetData(APP_SCAN_DATA_DISCOVERABLE, sizeof(bleScanDataDisc), (uint8_t *) bleScanDataDisc);

  /* set advertising and scan response data for connectable mode */
  AppAdvSetData(APP_ADV_DATA_CONNECTABLE, sizeof(bleAdvDataConn), (uint8_t *) bleAdvDataConn);
  AppAdvSetData(APP_SCAN_DATA_CONNECTABLE, 0, NULL);

  active = true;
  /* TODO: Sadly, not advertising leads to a higher current consumption... */
  epic_ble_set_mode(false, false);
}

void epic_ble_set_mode(bool bondable, bool scanner)
{
	if(!active) {
		return;
	}

	if(scanner && bondable) {
		/* TODO: return error */
		return;
	}

	if(scanner) {
		if(advertising_mode != APP_MODE_NONE) {
			advertising_mode_target = APP_MODE_NONE;
			advertising_mode = APP_MODE_NONE;
			AppAdvStop();
		}

		dmConnId_t      connId;
		if ((connId = AppConnIsOpen()) != DM_CONN_ID_NONE) {
			AppConnClose(connId);
		}

		/* Normal scanning filters out duplicates. We don't
		* want that for now... */
		//AppScanStart(scannerMasterCfg.discMode, scannerMasterCfg.scanType, scannerMasterCfg.scanDuration);
		DmScanSetInterval(HCI_SCAN_PHY_LE_1M_BIT, &pAppMasterCfg->scanInterval,
				&pAppMasterCfg->scanWindow);
		DmScanStart(HCI_SCAN_PHY_LE_1M_BIT, scannerMasterCfg.discMode,
				&scannerMasterCfg.scanType, FALSE, scannerMasterCfg.scanDuration, 0);

		return;
	} else {
		AppScanStop();
	}

	if(bondable) {
		/* We need to stop advertising in between or the
		 * adv set will not be changed.
		 * Also need to wait for the stop operation to finish
		 * before we can start again
		 * Also need to set the variables first as we don't
		 * have a lock on the stack.*/
		AppSetBondable(TRUE);
		if(advertising_mode != APP_MODE_DISCOVERABLE) {
			LOG_INFO("ble", "Making bondable and discoverable");
			if(advertising_mode != APP_MODE_NONE) {
				advertising_mode_target = APP_MODE_DISCOVERABLE;
				advertising_mode = APP_MODE_NONE;
				AppAdvStop();
			} else {
				advertising_mode = APP_MODE_DISCOVERABLE;
				advertising_mode_target = APP_MODE_DISCOVERABLE;
				AppAdvStart(advertising_mode);
			}
		}
	} else {
		AppSetBondable(FALSE);
		if(AppDbCheckBonded()) {
			if(advertising_mode != APP_MODE_CONNECTABLE) {
				LOG_INFO("ble", "Bonded. Making connectable");
				if(advertising_mode != APP_MODE_NONE) {
					advertising_mode_target = APP_MODE_CONNECTABLE;
					advertising_mode = APP_MODE_NONE;
					AppAdvStop();
				} else {
					advertising_mode = APP_MODE_CONNECTABLE;
					advertising_mode_target = APP_MODE_CONNECTABLE;
					AppAdvStart(advertising_mode);
				}
			}
		} else {
			if(advertising_mode != APP_MODE_NONE) {
				LOG_INFO("ble", "Not bonded. Stop advertising");
				advertising_mode = APP_MODE_NONE;
				advertising_mode_target = APP_MODE_NONE;
				AppAdvStop();
			}
		}
	}
}

uint32_t epic_ble_get_compare_value(void)
{
	return pair_confirm_value;
}

int epic_ble_get_peer_device_name(char *buf, size_t buf_size)
{
	if (AppConnIsOpen() != DM_CONN_ID_NONE) {
		return GapGetDeviceName(buf, buf_size);
	} else {
		return -ENOENT;
	}
}

int epic_ble_get_last_pairing_name(char *buf, size_t buf_size)
{
	if(last_pairing == NULL) {
		return -ENOENT;
	}

	return AppDbGetPairingName(last_pairing, buf, buf_size);
}

void epic_ble_compare_response(bool confirmed)
{
	if(!active) {
		return;
	}

	if(pair_connId != DM_CONN_ID_NONE) {
		LOG_INFO("ble", "Value confirmed: %u", confirmed);
		DmSecCompareRsp(pair_connId, confirmed);
	} else {
		/* error condition */
	}
}

static void bleHandleNumericComparison(dmSecCnfIndEvt_t *pCnfInd)
{
	if(!active) {
		return;
	}

	pair_connId = (dmConnId_t)pCnfInd->hdr.param;
	pair_confirm_value = DmSecGetCompareValue(pCnfInd->confirm);
	LOG_INFO("ble", "Confirm Value: %ld", pair_confirm_value);
	ble_epic_ble_api_trigger_event(BLE_EVENT_HANDLE_NUMERIC_COMPARISON, NULL);
}

int epic_ble_get_scan_report(struct epic_scan_report *rpt)
{
	if(scan_reports_head == scan_reports_tail) {
		return -ENOENT;
	}

	int new_tail = (scan_reports_tail + 1) % SCAN_REPORTS_NUM;
	*rpt = scan_reports[new_tail];
	scan_reports_tail = new_tail;
	return 0;
}

static void scannerScanReport(dmEvt_t *pMsg)
{
	struct epic_scan_report *scan_report;

	int next_head = (scan_reports_head + 1) % SCAN_REPORTS_NUM;
	if(next_head == scan_reports_tail) {
		ble_epic_ble_api_trigger_event(BLE_EVENT_SCAN_REPORT, NULL);
		return;
	}
	scan_reports_head = next_head;
	scan_report = &scan_reports[scan_reports_head];

	memset(scan_report->data, 0, sizeof(scan_report->data));
	memccpy(scan_report->data, pMsg->scanReport.pData, pMsg->scanReport.len, sizeof(scan_report->data));
	scan_report->len = pMsg->scanReport.len;
	scan_report->rssi = pMsg->scanReport.rssi;
	scan_report->eventType = pMsg->scanReport.eventType;
	scan_report->addrType = pMsg->scanReport.addrType;
	memcpy(scan_report->addr, pMsg->scanReport.addr, BDA_ADDR_LEN);

	scan_report->directAddrType = pMsg->scanReport.directAddrType;
	memcpy(scan_report->directAddr, pMsg->scanReport.directAddr, BDA_ADDR_LEN);
	ble_epic_ble_api_trigger_event(BLE_EVENT_SCAN_REPORT, NULL);

	if((scan_reports_head + 1) % SCAN_REPORTS_NUM == scan_reports_tail) {
		LOG_WARN("ble", "Application missing scan results");
	}
}

/*************************************************************************************************/
/*!
 *  \brief  Process messages from the event handler.
 *
 *  \param  pMsg    Pointer to message.
 *
 *  \return None.
 */
/*************************************************************************************************/
static void bleProcMsg(bleMsg_t *pMsg)
{
  hciLeConnCmplEvt_t *connOpen;

  switch(pMsg->hdr.event)
  {
    case ATTC_READ_RSP:
    case ATTC_HANDLE_VALUE_IND:
      bleValueUpdate((attEvt_t *) pMsg);
      break;

    case ATTS_HANDLE_VALUE_CNF:
      HidProcMsg(&pMsg->hdr);
      UartProcMsg(pMsg);
      break;

    case ATTS_CCC_STATE_IND:
      bleProcCccState(pMsg);
      break;

    case DM_RESET_CMPL_IND:
      DmSecGenerateEccKeyReq();
      bleSetup(pMsg);
      break;

    case DM_ADV_START_IND:
      LOG_INFO("ble", "Advertisement started %u %u", advertising_mode, advertising_mode_target);
      if(advertising_mode != advertising_mode_target || advertising_mode_target == APP_MODE_NONE) {
        AppAdvStop();
      }
      break;

    case DM_ADV_STOP_IND:
      LOG_INFO("ble", "Advertisement stopped %u %u", advertising_mode, advertising_mode_target);
      if(advertising_mode != advertising_mode_target) {
        advertising_mode = advertising_mode_target;
        AppAdvStart(advertising_mode);
      }
      break;

    case DM_CONN_OPEN_IND:
      connOpen = &pMsg->dm.connOpen;
      LOG_INFO("ble", "connection from %02X:%02X:%02X:%02X:%02X:%02X opened",
               connOpen->peerAddr[5], connOpen->peerAddr[4],
               connOpen->peerAddr[3], connOpen->peerAddr[2],
               connOpen->peerAddr[1], connOpen->peerAddr[0]);
      bleESS_ccc_update();
      HidProcMsg(&pMsg->hdr);
      UartProcMsg(pMsg);
      break;

    case DM_CONN_CLOSE_IND:
      switch (pMsg->dm.connClose.reason)
      {
        case HCI_ERR_CONN_TIMEOUT:
          LOG_INFO("ble", "Connection closed (0x%02X), Connection timeout",
                   pMsg->dm.connClose.reason);
          break;
        case HCI_ERR_LOCAL_TERMINATED:
          LOG_INFO("ble", "Connection closed (0x%02X), Connection terminated by local host",
                   pMsg->dm.connClose.reason);
          break;
        case HCI_ERR_REMOTE_TERMINATED:
          LOG_INFO("ble", "Connection closed (0x%02X), Remote user terminated connection",
                   pMsg->dm.connClose.reason);
          break;
        case HCI_ERR_CONN_FAIL:
          LOG_INFO("ble", "Connection closed (0x%02X), Connection failed to be established",
                   pMsg->dm.connClose.reason);
          break;
        case HCI_ERR_MIC_FAILURE:
          LOG_INFO("ble", "Connection closed (0x%02X), Connection terminated due to MIC failure",
                   pMsg->dm.connClose.reason);
          break;
        default:
          LOG_INFO("ble", "Connection closed (0x%02X)",
                   pMsg->dm.connClose.reason);
          break;
      }
      /* Stack overwrites advertising mode after connection close.
       * Force our desired mode.
       */
      advertising_mode = APP_MODE_NONE;
      AppAdvStop();
      bleClose(pMsg);
      break;

    case DM_SEC_PAIR_CMPL_IND:
      LOG_INFO("ble", "Secure pairing successful, auth: 0x%02X",
               pMsg->dm.pairCmpl.auth);

      DmSecGenerateEccKeyReq();
      last_pairing = AppDbGetHdl((dmConnId_t) pMsg->hdr.param);
      AppDbNvmStoreBond(last_pairing);

      pair_connId = DM_CONN_ID_NONE;
      ble_epic_ble_api_trigger_event(BLE_EVENT_PAIRING_COMPLETE, NULL);
      /* After a successful pairing, bonding is disabled again.
       * We don't want that for now. */
      AppSetBondable(TRUE);
      break;

    case DM_SEC_PAIR_FAIL_IND:
      switch (pMsg->hdr.status) {
        case SMP_ERR_TIMEOUT:
          LOG_INFO("ble", "Secure pairing failed (0x%02X), Transaction timeout",
                   pMsg->hdr.status);
          break;
        case SMP_ERR_ATTEMPTS:
          LOG_INFO("ble", "Secure pairing failed (0x%02X), Repeated attempts",
                   pMsg->hdr.status);
          break;
        default:
          LOG_INFO("ble", "Secure pairing failed (0x%02X)",
                   pMsg->hdr.status);
          break;
      }

      DmSecGenerateEccKeyReq();

      pair_connId = DM_CONN_ID_NONE;
      ble_epic_ble_api_trigger_event(BLE_EVENT_PAIRING_FAILED, NULL);
      break;

    case DM_SEC_ENCRYPT_IND:
      LOG_INFO("ble", "Encrypted handshake successful");
      break;

    case DM_SEC_ENCRYPT_FAIL_IND:
      LOG_INFO("ble", "Encrypted handshake failed");
      break;

    case DM_SEC_AUTH_REQ_IND:
      AppHandlePasskey(&pMsg->dm.authReq);
      break;

    case DM_SEC_ECC_KEY_IND:
      DmSecSetEccKey(&pMsg->dm.eccMsg.data.key);
      break;

    case DM_SEC_COMPARE_IND:
      bleHandleNumericComparison(&pMsg->dm.cnfInd);
      break;

    case DM_SCAN_REPORT_IND:
      scannerScanReport((dmEvt_t *)pMsg);
      break;

    case DM_HW_ERROR_IND:
      LOG_ERR("ble", "HW Error");
      break;

    default:
      break;
  }
}

/*************************************************************************************************/
/*!
 *  \brief  Application handler init function called during system initialization.
 *
 *  \param  handlerID  WSF handler ID.
 *
 *  \return None.
 */
/*************************************************************************************************/
static void BleHandlerInit(void)
{
  APP_TRACE_INFO0("BleHandlerInit");

  /* store handler ID */
  bleHandlerId =WsfOsSetNextHandler(BleHandler);

  /* Set configuration pointers */
  pAppAdvCfg = (appAdvCfg_t *) &bleAdvCfg;
  pAppSlaveCfg = (appSlaveCfg_t *) &bleSlaveCfg;
  pAppSecCfg = (appSecCfg_t *) &bleSecCfg;
  pAppUpdateCfg = (appUpdateCfg_t *) &bleUpdateCfg;
  pAppDiscCfg = (appDiscCfg_t *) &bleDiscCfg;
  pAppMasterCfg = (appMasterCfg_t *) &scannerMasterCfg;

  /* Initialize application framework */
  AppSlaveInit();
  AppDiscInit();

  /* Set stack configuration pointers */
  pSmpCfg = (smpCfg_t *) &bleSmpCfg;
  pAttCfg = (attCfg_t *) &bleAttCfg;
}

/*************************************************************************************************/
/*!
 *  \brief  WSF event handler for application.
 *
 *  \param  event   WSF event mask.
 *  \param  pMsg    WSF message.
 *
 *  \return None.
 */
/*************************************************************************************************/
static void BleHandler(wsfEventMask_t event, wsfMsgHdr_t *pMsg)
{
  if (pMsg != NULL)
  {
    APP_TRACE_INFO1("Ble got evt %d", pMsg->event);

    if (pMsg->event >= DM_CBACK_START && pMsg->event <= DM_CBACK_END)
    {
      if(pMsg->event != DM_SCAN_REPORT_IND) LOG_INFO("ble", "Ble got evt %d: %s", pMsg->event, dm_events[pMsg->event - DM_CBACK_START]);
      /* process advertising and connection-related messages */
      AppSlaveProcDmMsg((dmEvt_t *) pMsg);

      /* process security-related messages */
      AppSlaveSecProcDmMsg((dmEvt_t *) pMsg);

      /* process discovery-related messages */
      AppDiscProcDmMsg((dmEvt_t *) pMsg);

      ble_epic_dm_api_event((dmEvt_t *)pMsg);
    }
    else if (pMsg->event >= ATT_CBACK_START && pMsg->event <= ATT_CBACK_END)
    {
      /* Don't spam the console with successful notfication/indications */
      if (!(pMsg->event == ATTS_HANDLE_VALUE_CNF && pMsg->status == ATT_SUCCESS)) {
        LOG_INFO("ble", "Ble got evt %d (%s): %d %d", pMsg->event, att_events[pMsg->event - ATT_CBACK_START], ((bleMsg_t *)pMsg)->att.handle, pMsg->status);
      }
      /* process discovery-related ATT messages */
      AppDiscProcAttMsg((attEvt_t *) pMsg);
      ble_epic_att_api_event((attEvt_t *)pMsg);
    }
    else if (pMsg->event >= L2C_COC_CBACK_START && pMsg->event <= L2C_COC_CBACK_CBACK_END)
    {
      LOG_INFO("ble", "Ble got evt %d: %s", pMsg->event, l2c_coc_events[pMsg->event - L2C_COC_CBACK_START]);
    }
    else
    {
      LOG_INFO("ble", "Ble got evt %d", pMsg->event);
    }

    /* perform profile and user interface-related operations */
    bleProcMsg((bleMsg_t *) pMsg);
  }
}

/*************************************************************************************************/
/*!
 *  \brief  Start the application.
 *
 *  \return None.
 */
/*************************************************************************************************/
void BleStart(void)
{
  BleHandlerInit();

  /* Register for stack callbacks */
  DmRegister(bleDmCback);
  DmConnRegister(DM_CLIENT_ID_APP, bleDmCback);
  AttRegister(bleAttCback);
  AttConnRegister(AppServerConnCback);
  AttsCccRegister(BLE_NUM_CCC_IDX, (attsCccSet_t *) bleCccSet, bleCccCback);

  /* Register for app framework discovery callbacks */
  AppDiscRegister(bleDiscCback);

  /* Initialize attribute server database */
  SvcCoreAddGroup();
  SvcDisAddGroup(); // Device Information Service

  if(config_get_boolean_with_default("ble_hid_enable", false)) {
    hid_init();
  }

  ble_epic_ble_api_init();

  /* Set Service Changed CCCD index. */
  GattSetSvcChangedIdx(BLE_GATT_SC_CCC_IDX);

  /* Reset the device */
  DmDevReset();
}

/* clang-format on */