esp-nimble-cpp/src/NimBLEUtils.cpp
h2zero efa48c0d57 Release 1.4.0
* Fix typos

* Update docs
2022-07-31 11:34:56 -06:00

518 lines
23 KiB
C++
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/*
* NimBLEUtils.cpp
*
* Created: on Jan 25 2020
* Author H2zero
*
*/
#include "nimconfig.h"
#if defined(CONFIG_BT_ENABLED)
#include "NimBLEUtils.h"
#include "NimBLELog.h"
#include <stdlib.h>
static const char* LOG_TAG = "NimBLEUtils";
/**
* @brief A function for checking validity of connection parameters.
* @param [in] params A pointer to the structure containing the parameters to check.
* @return valid == 0 or error code.
*/
int NimBLEUtils::checkConnParams(ble_gap_conn_params* params) {
/* Check connection interval min */
if ((params->itvl_min < BLE_HCI_CONN_ITVL_MIN) ||
(params->itvl_min > BLE_HCI_CONN_ITVL_MAX)) {
return BLE_ERR_INV_HCI_CMD_PARMS;
}
/* Check connection interval max */
if ((params->itvl_max < BLE_HCI_CONN_ITVL_MIN) ||
(params->itvl_max > BLE_HCI_CONN_ITVL_MAX) ||
(params->itvl_max < params->itvl_min)) {
return BLE_ERR_INV_HCI_CMD_PARMS;
}
/* Check connection latency */
if (params->latency > BLE_HCI_CONN_LATENCY_MAX) {
return BLE_ERR_INV_HCI_CMD_PARMS;
}
/* Check supervision timeout */
if ((params->supervision_timeout < BLE_HCI_CONN_SPVN_TIMEOUT_MIN) ||
(params->supervision_timeout > BLE_HCI_CONN_SPVN_TIMEOUT_MAX)) {
return BLE_ERR_INV_HCI_CMD_PARMS;
}
/* Check connection event length */
if (params->min_ce_len > params->max_ce_len) {
return BLE_ERR_INV_HCI_CMD_PARMS;
}
return 0;
}
/**
* @brief Converts a return code from the NimBLE stack to a text string.
* @param [in] rc The return code to convert.
* @return A string representation of the return code.
*/
const char* NimBLEUtils::returnCodeToString(int rc) {
#if defined(CONFIG_NIMBLE_CPP_ENABLE_RETURN_CODE_TEXT)
switch(rc) {
case 0:
return "SUCCESS";
case BLE_HS_EAGAIN:
return "Temporary failure; try again.";
case BLE_HS_EALREADY:
return "Operation already in progress or completed.";
case BLE_HS_EINVAL:
return "One or more arguments are invalid.";
case BLE_HS_EMSGSIZE:
return "The provided buffer is too small.";
case BLE_HS_ENOENT:
return "No entry matching the specified criteria.";
case BLE_HS_ENOMEM:
return "Operation failed due to resource exhaustion.";
case BLE_HS_ENOTCONN:
return "No open connection with the specified handle.";
case BLE_HS_ENOTSUP:
return "Operation disabled at compile time.";
case BLE_HS_EAPP:
return "Application callback behaved unexpectedly.";
case BLE_HS_EBADDATA:
return "Command from peer is invalid.";
case BLE_HS_EOS:
return "Mynewt OS error.";
case BLE_HS_ECONTROLLER:
return "Event from controller is invalid.";
case BLE_HS_ETIMEOUT:
return "Operation timed out.";
case BLE_HS_EDONE:
return "Operation completed successfully.";
case BLE_HS_EBUSY:
return "Operation cannot be performed until procedure completes.";
case BLE_HS_EREJECT:
return "Peer rejected a connection parameter update request.";
case BLE_HS_EUNKNOWN:
return "Unexpected failure; catch all.";
case BLE_HS_EROLE:
return "Operation requires different role (e.g., central vs. peripheral).";
case BLE_HS_ETIMEOUT_HCI:
return "HCI request timed out; controller unresponsive.";
case BLE_HS_ENOMEM_EVT:
return "Controller failed to send event due to memory exhaustion (combined host-controller only).";
case BLE_HS_ENOADDR:
return "Operation requires an identity address but none configured.";
case BLE_HS_ENOTSYNCED:
return "Attempt to use the host before it is synced with controller.";
case BLE_HS_EAUTHEN:
return "Insufficient authentication.";
case BLE_HS_EAUTHOR:
return "Insufficient authorization.";
case BLE_HS_EENCRYPT:
return "Insufficient encryption level.";
case BLE_HS_EENCRYPT_KEY_SZ:
return "Insufficient key size.";
case BLE_HS_ESTORE_CAP:
return "Storage at capacity.";
case BLE_HS_ESTORE_FAIL:
return "Storage IO error.";
case (0x0100+BLE_ATT_ERR_INVALID_HANDLE ):
return "The attribute handle given was not valid on this server.";
case (0x0100+BLE_ATT_ERR_READ_NOT_PERMITTED ):
return "The attribute cannot be read.";
case (0x0100+BLE_ATT_ERR_WRITE_NOT_PERMITTED ):
return "The attribute cannot be written.";
case (0x0100+BLE_ATT_ERR_INVALID_PDU ):
return "The attribute PDU was invalid.";
case (0x0100+BLE_ATT_ERR_INSUFFICIENT_AUTHEN ):
return "The attribute requires authentication before it can be read or written.";
case (0x0100+BLE_ATT_ERR_REQ_NOT_SUPPORTED ):
return "Attribute server does not support the request received from the client.";
case (0x0100+BLE_ATT_ERR_INVALID_OFFSET ):
return "Offset specified was past the end of the attribute.";
case (0x0100+BLE_ATT_ERR_INSUFFICIENT_AUTHOR ):
return "The attribute requires authorization before it can be read or written.";
case (0x0100+BLE_ATT_ERR_PREPARE_QUEUE_FULL ):
return "Too many prepare writes have been queued.";
case (0x0100+BLE_ATT_ERR_ATTR_NOT_FOUND ):
return "No attribute found within the given attribute handle range.";
case (0x0100+BLE_ATT_ERR_ATTR_NOT_LONG ):
return "The attribute cannot be read or written using the Read Blob Request.";
case (0x0100+BLE_ATT_ERR_INSUFFICIENT_KEY_SZ ):
return "The Encryption Key Size used for encrypting this link is insufficient.";
case (0x0100+BLE_ATT_ERR_INVALID_ATTR_VALUE_LEN ):
return "The attribute value length is invalid for the operation.";
case (0x0100+BLE_ATT_ERR_UNLIKELY ):
return "The attribute request has encountered an error that was unlikely, could not be completed as requested.";
case (0x0100+BLE_ATT_ERR_INSUFFICIENT_ENC ):
return "The attribute requires encryption before it can be read or written.";
case (0x0100+BLE_ATT_ERR_UNSUPPORTED_GROUP ):
return "The attribute type is not a supported grouping attribute as defined by a higher layer specification.";
case (0x0100+BLE_ATT_ERR_INSUFFICIENT_RES ):
return "Insufficient Resources to complete the request.";
case (0x0200+BLE_ERR_UNKNOWN_HCI_CMD ):
return "Unknown HCI Command";
case (0x0200+BLE_ERR_UNK_CONN_ID ):
return "Unknown Connection Identifier";
case (0x0200+BLE_ERR_HW_FAIL ):
return "Hardware Failure";
case (0x0200+BLE_ERR_PAGE_TMO ):
return "Page Timeout";
case (0x0200+BLE_ERR_AUTH_FAIL ):
return "Authentication Failure";
case (0x0200+BLE_ERR_PINKEY_MISSING ):
return "PIN or Key Missing";
case (0x0200+BLE_ERR_MEM_CAPACITY ):
return "Memory Capacity Exceeded";
case (0x0200+BLE_ERR_CONN_SPVN_TMO ):
return "Connection Timeout";
case (0x0200+BLE_ERR_CONN_LIMIT ):
return "Connection Limit Exceeded";
case (0x0200+BLE_ERR_SYNCH_CONN_LIMIT ):
return "Synchronous Connection Limit To A Device Exceeded";
case (0x0200+BLE_ERR_ACL_CONN_EXISTS ):
return "ACL Connection Already Exists";
case (0x0200+BLE_ERR_CMD_DISALLOWED ):
return "Command Disallowed";
case (0x0200+BLE_ERR_CONN_REJ_RESOURCES ):
return "Connection Rejected due to Limited Resources";
case (0x0200+BLE_ERR_CONN_REJ_SECURITY ):
return "Connection Rejected Due To Security Reasons";
case (0x0200+BLE_ERR_CONN_REJ_BD_ADDR ):
return "Connection Rejected due to Unacceptable BD_ADDR";
case (0x0200+BLE_ERR_CONN_ACCEPT_TMO ):
return "Connection Accept Timeout Exceeded";
case (0x0200+BLE_ERR_UNSUPPORTED ):
return "Unsupported Feature or Parameter Value";
case (0x0200+BLE_ERR_INV_HCI_CMD_PARMS ):
return "Invalid HCI Command Parameters";
case (0x0200+BLE_ERR_REM_USER_CONN_TERM ):
return "Remote User Terminated Connection";
case (0x0200+BLE_ERR_RD_CONN_TERM_RESRCS ):
return "Remote Device Terminated Connection due to Low Resources";
case (0x0200+BLE_ERR_RD_CONN_TERM_PWROFF ):
return "Remote Device Terminated Connection due to Power Off";
case (0x0200+BLE_ERR_CONN_TERM_LOCAL ):
return "Connection Terminated By Local Host";
case (0x0200+BLE_ERR_REPEATED_ATTEMPTS ):
return "Repeated Attempts";
case (0x0200+BLE_ERR_NO_PAIRING ):
return "Pairing Not Allowed";
case (0x0200+BLE_ERR_UNK_LMP ):
return "Unknown LMP PDU";
case (0x0200+BLE_ERR_UNSUPP_REM_FEATURE ):
return "Unsupported Remote Feature / Unsupported LMP Feature";
case (0x0200+BLE_ERR_SCO_OFFSET ):
return "SCO Offset Rejected";
case (0x0200+BLE_ERR_SCO_ITVL ):
return "SCO Interval Rejected";
case (0x0200+BLE_ERR_SCO_AIR_MODE ):
return "SCO Air Mode Rejected";
case (0x0200+BLE_ERR_INV_LMP_LL_PARM ):
return "Invalid LMP Parameters / Invalid LL Parameters";
case (0x0200+BLE_ERR_UNSPECIFIED ):
return "Unspecified Error";
case (0x0200+BLE_ERR_UNSUPP_LMP_LL_PARM ):
return "Unsupported LMP Parameter Value / Unsupported LL Parameter Value";
case (0x0200+BLE_ERR_NO_ROLE_CHANGE ):
return "Role Change Not Allowed";
case (0x0200+BLE_ERR_LMP_LL_RSP_TMO ):
return "LMP Response Timeout / LL Response Timeout";
case (0x0200+BLE_ERR_LMP_COLLISION ):
return "LMP Error Transaction Collision";
case (0x0200+BLE_ERR_LMP_PDU ):
return "LMP PDU Not Allowed";
case (0x0200+BLE_ERR_ENCRYPTION_MODE ):
return "Encryption Mode Not Acceptable";
case (0x0200+BLE_ERR_LINK_KEY_CHANGE ):
return "Link Key cannot be Changed";
case (0x0200+BLE_ERR_UNSUPP_QOS ):
return "Requested QoS Not Supported";
case (0x0200+BLE_ERR_INSTANT_PASSED ):
return "Instant Passed";
case (0x0200+BLE_ERR_UNIT_KEY_PAIRING ):
return "Pairing With Unit Key Not Supported";
case (0x0200+BLE_ERR_DIFF_TRANS_COLL ):
return "Different Transaction Collision";
case (0x0200+BLE_ERR_QOS_PARM ):
return "QoS Unacceptable Parameter";
case (0x0200+BLE_ERR_QOS_REJECTED ):
return "QoS Rejected";
case (0x0200+BLE_ERR_CHAN_CLASS ):
return "Channel Classification Not Supported";
case (0x0200+BLE_ERR_INSUFFICIENT_SEC ):
return "Insufficient Security";
case (0x0200+BLE_ERR_PARM_OUT_OF_RANGE ):
return "Parameter Out Of Mandatory Range";
case (0x0200+BLE_ERR_PENDING_ROLE_SW ):
return "Role Switch Pending";
case (0x0200+BLE_ERR_RESERVED_SLOT ):
return "Reserved Slot Violation";
case (0x0200+BLE_ERR_ROLE_SW_FAIL ):
return "Role Switch Failed";
case (0x0200+BLE_ERR_INQ_RSP_TOO_BIG ):
return "Extended Inquiry Response Too Large";
case (0x0200+BLE_ERR_SEC_SIMPLE_PAIR ):
return "Secure Simple Pairing Not Supported By Host";
case (0x0200+BLE_ERR_HOST_BUSY_PAIR ):
return "Host Busy - Pairing";
case (0x0200+BLE_ERR_CONN_REJ_CHANNEL ):
return "Connection Rejected, No Suitable Channel Found";
case (0x0200+BLE_ERR_CTLR_BUSY ):
return "Controller Busy";
case (0x0200+BLE_ERR_CONN_PARMS ):
return "Unacceptable Connection Parameters";
case (0x0200+BLE_ERR_DIR_ADV_TMO ):
return "Directed Advertising Timeout";
case (0x0200+BLE_ERR_CONN_TERM_MIC ):
return "Connection Terminated due to MIC Failure";
case (0x0200+BLE_ERR_CONN_ESTABLISHMENT ):
return "Connection Failed to be Established";
case (0x0200+BLE_ERR_MAC_CONN_FAIL ):
return "MAC Connection Failed";
case (0x0200+BLE_ERR_COARSE_CLK_ADJ ):
return "Coarse Clock Adjustment Rejected";
case (0x0300+BLE_L2CAP_SIG_ERR_CMD_NOT_UNDERSTOOD ):
return "Invalid or unsupported incoming L2CAP sig command.";
case (0x0300+BLE_L2CAP_SIG_ERR_MTU_EXCEEDED ):
return "Incoming packet too large.";
case (0x0300+BLE_L2CAP_SIG_ERR_INVALID_CID ):
return "No channel with specified ID.";
case (0x0400+BLE_SM_ERR_PASSKEY ):
return "The user input of passkey failed, for example, the user cancelled the operation.";
case (0x0400+BLE_SM_ERR_OOB ):
return "The OOB data is not available.";
case (0x0400+BLE_SM_ERR_AUTHREQ ):
return "The pairing procedure cannot be performed as authentication requirements cannot be met due to IO capabilities of one or both devices.";
case (0x0400+BLE_SM_ERR_CONFIRM_MISMATCH ):
return "The confirm value does not match the calculated compare value.";
case (0x0400+BLE_SM_ERR_PAIR_NOT_SUPP ):
return "Pairing is not supported by the device.";
case (0x0400+BLE_SM_ERR_ENC_KEY_SZ ):
return "The resultant encryption key size is insufficient for the security requirements of this device.";
case (0x0400+BLE_SM_ERR_CMD_NOT_SUPP ):
return "The SMP command received is not supported on this device.";
case (0x0400+BLE_SM_ERR_UNSPECIFIED ):
return "Pairing failed due to an unspecified reason.";
case (0x0400+BLE_SM_ERR_REPEATED ):
return "Pairing or authentication procedure disallowed, too little time has elapsed since last pairing request or security request.";
case (0x0400+BLE_SM_ERR_INVAL ):
return "Command length is invalid or that a parameter is outside of the specified range.";
case (0x0400+BLE_SM_ERR_DHKEY ):
return "DHKey Check value received doesn't match the one calculated by the local device.";
case (0x0400+BLE_SM_ERR_NUMCMP ):
return "Confirm values in the numeric comparison protocol do not match.";
case (0x0400+BLE_SM_ERR_ALREADY ):
return "Pairing over the LE transport failed - Pairing Request sent over the BR/EDR transport in process.";
case (0x0400+BLE_SM_ERR_CROSS_TRANS ):
return "BR/EDR Link Key generated on the BR/EDR transport cannot be used to derive and distribute keys for the LE transport.";
case (0x0500+BLE_SM_ERR_PASSKEY ):
return "The user input of passkey failed or the user cancelled the operation.";
case (0x0500+BLE_SM_ERR_OOB ):
return "The OOB data is not available.";
case (0x0500+BLE_SM_ERR_AUTHREQ ):
return "The pairing procedure cannot be performed as authentication requirements cannot be met due to IO capabilities of one or both devices.";
case (0x0500+BLE_SM_ERR_CONFIRM_MISMATCH ):
return "The confirm value does not match the calculated compare value.";
case (0x0500+BLE_SM_ERR_PAIR_NOT_SUPP ):
return "Pairing is not supported by the device.";
case (0x0500+BLE_SM_ERR_ENC_KEY_SZ ):
return "The resultant encryption key size is insufficient for the security requirements of this device.";
case (0x0500+BLE_SM_ERR_CMD_NOT_SUPP ):
return "The SMP command received is not supported on this device.";
case (0x0500+BLE_SM_ERR_UNSPECIFIED ):
return "Pairing failed due to an unspecified reason.";
case (0x0500+BLE_SM_ERR_REPEATED ):
return "Pairing or authentication procedure is disallowed because too little time has elapsed since last pairing request or security request.";
case (0x0500+BLE_SM_ERR_INVAL ):
return "Command length is invalid or a parameter is outside of the specified range.";
case (0x0500+BLE_SM_ERR_DHKEY ):
return "Indicates to the remote device that the DHKey Check value received doesnt match the one calculated by the local device.";
case (0x0500+BLE_SM_ERR_NUMCMP ):
return "Confirm values in the numeric comparison protocol do not match.";
case (0x0500+BLE_SM_ERR_ALREADY ):
return "Pairing over the LE transport failed - Pairing Request sent over the BR/EDR transport in process.";
case (0x0500+BLE_SM_ERR_CROSS_TRANS ):
return "BR/EDR Link Key generated on the BR/EDR transport cannot be used to derive and distribute keys for the LE transport.";
default:
return "Unknown";
}
#else // #if defined(CONFIG_NIMBLE_CPP_ENABLE_RETURN_CODE_TEXT)
(void)rc;
return "";
#endif // #if defined(CONFIG_NIMBLE_CPP_ENABLE_RETURN_CODE_TEXT)
}
/**
* @brief Convert the advertising type flag to a string.
* @param advType The type to convert.
* @return A string representation of the advertising flags.
*/
const char* NimBLEUtils::advTypeToString(uint8_t advType) {
#if defined(CONFIG_NIMBLE_CPP_ENABLE_ADVERTISEMENT_TYPE_TEXT)
switch(advType) {
case BLE_HCI_ADV_TYPE_ADV_IND : //0
return "Undirected - Connectable / Scannable";
case BLE_HCI_ADV_TYPE_ADV_DIRECT_IND_HD: //1
return "Directed High Duty - Connectable";
case BLE_HCI_ADV_TYPE_ADV_SCAN_IND: //2
return "Non-Connectable - Scan Response Available";
case BLE_HCI_ADV_TYPE_ADV_NONCONN_IND: //3
return "Non-Connectable - No Scan Response";
case BLE_HCI_ADV_TYPE_ADV_DIRECT_IND_LD: //4
return "Directed Low Duty - Connectable";
default:
return "Unknown flag";
}
#else // #if defined(CONFIG_NIMBLE_CPP_ENABLE_ADVERTISEMENT_TYPE_TEXT)
(void)advType;
return "";
#endif // #if defined(CONFIG_NIMBLE_CPP_ENABLE_ADVERTISEMENT_TYPE_TEXT)
} // adFlagsToString
/**
* @brief Create a hex representation of data.
*
* @param [in] target Where to write the hex string. If this is null, we malloc storage.
* @param [in] source The start of the binary data.
* @param [in] length The length of the data to convert.
* @return A pointer to the formatted buffer.
*/
char* NimBLEUtils::buildHexData(uint8_t* target, const uint8_t* source, uint8_t length) {
// Guard against too much data.
if (length > 100) length = 100;
if (target == nullptr) {
target = (uint8_t*) malloc(length * 2 + 1);
if (target == nullptr) {
NIMBLE_LOGE(LOG_TAG, "buildHexData: malloc failed");
return nullptr;
}
}
char* startOfData = (char*) target;
for (int i = 0; i < length; i++) {
sprintf((char*) target, "%.2x", (char) *source);
source++;
target += 2;
}
// Handle the special case where there was no data.
if (length == 0) {
*startOfData = 0;
}
return startOfData;
} // buildHexData
/**
* @brief Utility function to log the gap event info.
* @param [in] event A pointer to the gap event structure.
* @param [in] arg Unused.
*/
void NimBLEUtils::dumpGapEvent(ble_gap_event *event, void *arg){
(void)arg;
#if defined(CONFIG_NIMBLE_CPP_ENABLE_GAP_EVENT_CODE_TEXT)
NIMBLE_LOGD(LOG_TAG, "Received a GAP event: %s", gapEventToString(event->type));
#else
(void)event;
#endif
}
/**
* @brief Convert a GAP event type to a string representation.
* @param [in] eventType The type of event.
* @return A string representation of the event type.
*/
const char* NimBLEUtils::gapEventToString(uint8_t eventType) {
#if defined(CONFIG_NIMBLE_CPP_ENABLE_GAP_EVENT_CODE_TEXT)
switch (eventType) {
case BLE_GAP_EVENT_CONNECT : //0
return "BLE_GAP_EVENT_CONNECT ";
case BLE_GAP_EVENT_DISCONNECT: //1
return "BLE_GAP_EVENT_DISCONNECT";
case BLE_GAP_EVENT_CONN_UPDATE: //3
return "BLE_GAP_EVENT_CONN_UPDATE";
case BLE_GAP_EVENT_CONN_UPDATE_REQ: //4
return "BLE_GAP_EVENT_CONN_UPDATE_REQ";
case BLE_GAP_EVENT_L2CAP_UPDATE_REQ: //5
return "BLE_GAP_EVENT_L2CAP_UPDATE_REQ";
case BLE_GAP_EVENT_TERM_FAILURE: //6
return "BLE_GAP_EVENT_TERM_FAILURE";
case BLE_GAP_EVENT_DISC: //7
return "BLE_GAP_EVENT_DISC";
case BLE_GAP_EVENT_DISC_COMPLETE: //8
return "BLE_GAP_EVENT_DISC_COMPLETE";
case BLE_GAP_EVENT_ADV_COMPLETE: //9
return "BLE_GAP_EVENT_ADV_COMPLETE";
case BLE_GAP_EVENT_ENC_CHANGE: //10
return "BLE_GAP_EVENT_ENC_CHANGE";
case BLE_GAP_EVENT_PASSKEY_ACTION : //11
return "BLE_GAP_EVENT_PASSKEY_ACTION";
case BLE_GAP_EVENT_NOTIFY_RX: //12
return "BLE_GAP_EVENT_NOTIFY_RX";
case BLE_GAP_EVENT_NOTIFY_TX : //13
return "BLE_GAP_EVENT_NOTIFY_TX";
case BLE_GAP_EVENT_SUBSCRIBE : //14
return "BLE_GAP_EVENT_SUBSCRIBE";
case BLE_GAP_EVENT_MTU: //15
return "BLE_GAP_EVENT_MTU";
case BLE_GAP_EVENT_IDENTITY_RESOLVED: //16
return "BLE_GAP_EVENT_IDENTITY_RESOLVED";
case BLE_GAP_EVENT_REPEAT_PAIRING: //17
return "BLE_GAP_EVENT_REPEAT_PAIRING";
case BLE_GAP_EVENT_PHY_UPDATE_COMPLETE: //18
return "BLE_GAP_EVENT_PHY_UPDATE_COMPLETE";
case BLE_GAP_EVENT_EXT_DISC: //19
return "BLE_GAP_EVENT_EXT_DISC";
#ifdef BLE_GAP_EVENT_PERIODIC_SYNC // IDF 4.0 does not support these
case BLE_GAP_EVENT_PERIODIC_SYNC: //20
return "BLE_GAP_EVENT_PERIODIC_SYNC";
case BLE_GAP_EVENT_PERIODIC_REPORT: //21
return "BLE_GAP_EVENT_PERIODIC_REPORT";
case BLE_GAP_EVENT_PERIODIC_SYNC_LOST: //22
return "BLE_GAP_EVENT_PERIODIC_SYNC_LOST";
case BLE_GAP_EVENT_SCAN_REQ_RCVD: //23
return "BLE_GAP_EVENT_SCAN_REQ_RCVD";
#endif
default:
NIMBLE_LOGD(LOG_TAG, "gapEventToString: Unknown event type %d 0x%.2x", eventType, eventType);
return "Unknown event type";
}
#else // #if defined(CONFIG_NIMBLE_CPP_ENABLE_GAP_EVENT_CODE_TEXT)
(void)eventType;
return "";
#endif // #if defined(CONFIG_NIMBLE_CPP_ENABLE_GAP_EVENT_CODE_TEXT)
} // gapEventToString
#endif //CONFIG_BT_ENABLED