Warning
This document is not updated for ESP32C61 yet, so some of the content may not be correct.
This warning was automatically inserted due to the source file being in the add_warnings_pages list.
Error Codes Reference
This section lists various error code constants defined in ESP-IDF.
For general information about error codes in ESP-IDF, see Error Handling.
ESP_FAIL (-1): Generic esp_err_t code indicating failure
ESP_OK (0): esp_err_t value indicating success (no error)
ESP_ERR_NO_MEM (0x101): Out of memory
ESP_ERR_INVALID_ARG (0x102): Invalid argument
ESP_ERR_INVALID_STATE (0x103): Invalid state
ESP_ERR_INVALID_SIZE (0x104): Invalid size
ESP_ERR_NOT_FOUND (0x105): Requested resource not found
ESP_ERR_NOT_SUPPORTED (0x106): Operation or feature not supported
ESP_ERR_TIMEOUT (0x107): Operation timed out
ESP_ERR_INVALID_RESPONSE (0x108): Received response was invalid
ESP_ERR_INVALID_CRC (0x109): CRC or checksum was invalid
ESP_ERR_INVALID_VERSION (0x10a): Version was invalid
ESP_ERR_INVALID_MAC (0x10b): MAC address was invalid
ESP_ERR_NOT_FINISHED (0x10c): Operation has not fully completed
ESP_ERR_NOT_ALLOWED (0x10d): Operation is not allowed
ESP_ERR_NVS_BASE (0x1100): Starting number of error codes
ESP_ERR_NVS_NOT_INITIALIZED (0x1101): The storage driver is not initialized
ESP_ERR_NVS_NOT_FOUND (0x1102): A requested entry couldn't be found or namespace doesn’t exist yet and mode is NVS_READONLY
ESP_ERR_NVS_TYPE_MISMATCH (0x1103): The type of set or get operation doesn't match the type of value stored in NVS
ESP_ERR_NVS_READ_ONLY (0x1104): Storage handle was opened as read only
ESP_ERR_NVS_NOT_ENOUGH_SPACE (0x1105): There is not enough space in the underlying storage to save the value
ESP_ERR_NVS_INVALID_NAME (0x1106): Namespace name doesn’t satisfy constraints
ESP_ERR_NVS_INVALID_HANDLE (0x1107): Handle has been closed or is NULL
ESP_ERR_NVS_REMOVE_FAILED (0x1108): The value wasn’t updated because flash write operation has failed. The value was written however, and update will be finished after re-initialization of nvs, provided that flash operation doesn’t fail again.
ESP_ERR_NVS_KEY_TOO_LONG (0x1109): Key name is too long
ESP_ERR_NVS_PAGE_FULL (0x110a): Internal error; never returned by nvs API functions
ESP_ERR_NVS_INVALID_STATE (0x110b): NVS is in an inconsistent state due to a previous error. Call nvs_flash_init and nvs_open again, then retry.
ESP_ERR_NVS_INVALID_LENGTH (0x110c): String or blob length is not sufficient to store data
ESP_ERR_NVS_NO_FREE_PAGES (0x110d): NVS partition doesn't contain any empty pages. This may happen if NVS partition was truncated. Erase the whole partition and call nvs_flash_init again.
ESP_ERR_NVS_VALUE_TOO_LONG (0x110e): Value doesn't fit into the entry or string or blob length is longer than supported by the implementation
ESP_ERR_NVS_PART_NOT_FOUND (0x110f): Partition with specified name is not found in the partition table
ESP_ERR_NVS_NEW_VERSION_FOUND (0x1110): NVS partition contains data in new format and cannot be recognized by this version of code
ESP_ERR_NVS_XTS_ENCR_FAILED (0x1111): XTS encryption failed while writing NVS entry
ESP_ERR_NVS_XTS_DECR_FAILED (0x1112): XTS decryption failed while reading NVS entry
ESP_ERR_NVS_XTS_CFG_FAILED (0x1113): XTS configuration setting failed
ESP_ERR_NVS_XTS_CFG_NOT_FOUND (0x1114): XTS configuration not found
ESP_ERR_NVS_ENCR_NOT_SUPPORTED (0x1115): NVS encryption is not supported in this version
ESP_ERR_NVS_KEYS_NOT_INITIALIZED (0x1116): NVS key partition is uninitialized
ESP_ERR_NVS_CORRUPT_KEY_PART (0x1117): NVS key partition is corrupt
ESP_ERR_NVS_CONTENT_DIFFERS (0x1118): Internal error; never returned by nvs API functions. NVS key is different in comparison
ESP_ERR_NVS_WRONG_ENCRYPTION (0x1119): NVS partition is marked as encrypted with generic flash encryption. This is forbidden since the NVS encryption works differently.
ESP_ERR_ULP_BASE (0x1200): Offset for ULP-related error codes
ESP_ERR_ULP_SIZE_TOO_BIG (0x1201): Program doesn't fit into RTC memory reserved for the ULP
ESP_ERR_ULP_INVALID_LOAD_ADDR (0x1202): Load address is outside of RTC memory reserved for the ULP
ESP_ERR_ULP_DUPLICATE_LABEL (0x1203): More than one label with the same number was defined
ESP_ERR_ULP_UNDEFINED_LABEL (0x1204): Branch instructions references an undefined label
ESP_ERR_ULP_BRANCH_OUT_OF_RANGE (0x1205): Branch target is out of range of B instruction (try replacing with BX)
ESP_ERR_OTA_BASE (0x1500): Base error code for ota_ops api
ESP_ERR_OTA_PARTITION_CONFLICT (0x1501): Error if request was to write or erase the current running partition
ESP_ERR_OTA_SELECT_INFO_INVALID (0x1502): Error if OTA data partition contains invalid content
ESP_ERR_OTA_VALIDATE_FAILED (0x1503): Error if OTA app image is invalid
ESP_ERR_OTA_SMALL_SEC_VER (0x1504): Error if the firmware has a secure version less than the running firmware.
ESP_ERR_OTA_ROLLBACK_FAILED (0x1505): Error if flash does not have valid firmware in passive partition and hence rollback is not possible
ESP_ERR_OTA_ROLLBACK_INVALID_STATE (0x1506): Error if current active firmware is still marked in pending validation state (ESP_OTA_IMG_PENDING_VERIFY), essentially first boot of firmware image post upgrade and hence firmware upgrade is not possible
ESP_ERR_EFUSE (0x1600): Base error code for efuse api.
ESP_OK_EFUSE_CNT (0x1601): OK the required number of bits is set.
ESP_ERR_EFUSE_CNT_IS_FULL (0x1602): Error field is full.
ESP_ERR_EFUSE_REPEATED_PROG (0x1603): Error repeated programming of programmed bits is strictly forbidden.
ESP_ERR_CODING (0x1604): Error while a encoding operation.
ESP_ERR_NOT_ENOUGH_UNUSED_KEY_BLOCKS (0x1605): Error not enough unused key blocks available
ESP_ERR_DAMAGED_READING (0x1606): Error. Burn or reset was done during a reading operation leads to damage read data. This error is internal to the efuse component and not returned by any public API.
ESP_ERR_IMAGE_BASE (0x2000)
ESP_ERR_IMAGE_FLASH_FAIL (0x2001)
ESP_ERR_IMAGE_INVALID (0x2002)
ESP_ERR_WIFI_BASE (0x3000): Starting number of WiFi error codes
ESP_ERR_WIFI_NOT_INIT (0x3001): WiFi driver was not installed by esp_wifi_init
ESP_ERR_WIFI_NOT_STARTED (0x3002): WiFi driver was not started by esp_wifi_start
ESP_ERR_WIFI_NOT_STOPPED (0x3003): WiFi driver was not stopped by esp_wifi_stop
ESP_ERR_WIFI_IF (0x3004): WiFi interface error
ESP_ERR_WIFI_MODE (0x3005): WiFi mode error
ESP_ERR_WIFI_STATE (0x3006): WiFi internal state error
ESP_ERR_WIFI_CONN (0x3007): WiFi internal control block of station or soft-AP error
ESP_ERR_WIFI_NVS (0x3008): WiFi internal NVS module error
ESP_ERR_WIFI_MAC (0x3009): MAC address is invalid
ESP_ERR_WIFI_SSID (0x300a): SSID is invalid
ESP_ERR_WIFI_PASSWORD (0x300b): Password is invalid
ESP_ERR_WIFI_TIMEOUT (0x300c): Timeout error
ESP_ERR_WIFI_WAKE_FAIL (0x300d): WiFi is in sleep state(RF closed) and wakeup fail
ESP_ERR_WIFI_WOULD_BLOCK (0x300e): The caller would block
ESP_ERR_WIFI_NOT_CONNECT (0x300f): Station still in disconnect status
ESP_ERR_WIFI_POST (0x3012): Failed to post the event to WiFi task
ESP_ERR_WIFI_INIT_STATE (0x3013): Invalid WiFi state when init/deinit is called
ESP_ERR_WIFI_STOP_STATE (0x3014): Returned when WiFi is stopping
ESP_ERR_WIFI_NOT_ASSOC (0x3015): The WiFi connection is not associated
ESP_ERR_WIFI_TX_DISALLOW (0x3016): The WiFi TX is disallowed
ESP_ERR_WIFI_TWT_FULL (0x3017): no available flow id
ESP_ERR_WIFI_TWT_SETUP_TIMEOUT (0x3018): Timeout of receiving twt setup response frame, timeout times can be set during twt setup
ESP_ERR_WIFI_TWT_SETUP_TXFAIL (0x3019): TWT setup frame tx failed
ESP_ERR_WIFI_TWT_SETUP_REJECT (0x301a): The twt setup request was rejected by the AP
ESP_ERR_WIFI_DISCARD (0x301b): Discard frame
ESP_ERR_WIFI_ROC_IN_PROGRESS (0x301c): ROC op is in progress
ESP_ERR_WIFI_REGISTRAR (0x3033): WPS registrar is not supported
ESP_ERR_WIFI_WPS_TYPE (0x3034): WPS type error
ESP_ERR_WIFI_WPS_SM (0x3035): WPS state machine is not initialized
ESP_ERR_ESPNOW_BASE (0x3064): ESPNOW error number base.
ESP_ERR_ESPNOW_NOT_INIT (0x3065): ESPNOW is not initialized.
ESP_ERR_ESPNOW_ARG (0x3066): Invalid argument
ESP_ERR_ESPNOW_NO_MEM (0x3067): Out of memory
ESP_ERR_ESPNOW_FULL (0x3068): ESPNOW peer list is full
ESP_ERR_ESPNOW_NOT_FOUND (0x3069): ESPNOW peer is not found
ESP_ERR_ESPNOW_INTERNAL (0x306a): Internal error
ESP_ERR_ESPNOW_EXIST (0x306b): ESPNOW peer has existed
ESP_ERR_ESPNOW_IF (0x306c): Interface error
ESP_ERR_ESPNOW_CHAN (0x306d): Channel error
ESP_ERR_DPP_FAILURE (0x3097): Generic failure during DPP Operation
ESP_ERR_DPP_TX_FAILURE (0x3098): DPP Frame Tx failed OR not Acked
ESP_ERR_DPP_INVALID_ATTR (0x3099): Encountered invalid DPP Attribute
ESP_ERR_DPP_AUTH_TIMEOUT (0x309a): DPP Auth response was not received in time
ESP_ERR_DPP_INVALID_LIST (0x309b): Channel list given in esp_supp_dpp_bootstrap_gen() is not valid or too big
ESP_ERR_MESH_BASE (0x4000): Starting number of MESH error codes
ESP_ERR_MESH_WIFI_NOT_START (0x4001)
ESP_ERR_MESH_NOT_INIT (0x4002)
ESP_ERR_MESH_NOT_CONFIG (0x4003)
ESP_ERR_MESH_NOT_START (0x4004)
ESP_ERR_MESH_NOT_SUPPORT (0x4005)
ESP_ERR_MESH_NOT_ALLOWED (0x4006)
ESP_ERR_MESH_NO_MEMORY (0x4007)
ESP_ERR_MESH_ARGUMENT (0x4008)
ESP_ERR_MESH_EXCEED_MTU (0x4009)
ESP_ERR_MESH_TIMEOUT (0x400a)
ESP_ERR_MESH_DISCONNECTED (0x400b)
ESP_ERR_MESH_QUEUE_FAIL (0x400c)
ESP_ERR_MESH_QUEUE_FULL (0x400d)
ESP_ERR_MESH_NO_PARENT_FOUND (0x400e)
ESP_ERR_MESH_NO_ROUTE_FOUND (0x400f)
ESP_ERR_MESH_OPTION_NULL (0x4010)
ESP_ERR_MESH_OPTION_UNKNOWN (0x4011)
ESP_ERR_MESH_XON_NO_WINDOW (0x4012)
ESP_ERR_MESH_INTERFACE (0x4013)
ESP_ERR_MESH_DISCARD_DUPLICATE (0x4014)
ESP_ERR_MESH_DISCARD (0x4015)
ESP_ERR_MESH_VOTING (0x4016)
ESP_ERR_MESH_XMIT (0x4017)
ESP_ERR_MESH_QUEUE_READ (0x4018)
ESP_ERR_MESH_PS (0x4019)
ESP_ERR_MESH_RECV_RELEASE (0x401a)
ESP_ERR_ESP_NETIF_BASE (0x5000)
ESP_ERR_ESP_NETIF_INVALID_PARAMS (0x5001)
ESP_ERR_ESP_NETIF_IF_NOT_READY (0x5002)
ESP_ERR_ESP_NETIF_DHCPC_START_FAILED (0x5003)
ESP_ERR_ESP_NETIF_DHCP_ALREADY_STARTED (0x5004)
ESP_ERR_ESP_NETIF_DHCP_ALREADY_STOPPED (0x5005)
ESP_ERR_ESP_NETIF_NO_MEM (0x5006)
ESP_ERR_ESP_NETIF_DHCP_NOT_STOPPED (0x5007)
ESP_ERR_ESP_NETIF_DRIVER_ATTACH_FAILED (0x5008)
ESP_ERR_ESP_NETIF_INIT_FAILED (0x5009)
ESP_ERR_ESP_NETIF_DNS_NOT_CONFIGURED (0x500a)
ESP_ERR_ESP_NETIF_MLD6_FAILED (0x500b)
ESP_ERR_ESP_NETIF_IP6_ADDR_FAILED (0x500c)
ESP_ERR_ESP_NETIF_DHCPS_START_FAILED (0x500d)
ESP_ERR_ESP_NETIF_TX_FAILED (0x500e)
ESP_ERR_FLASH_BASE (0x6000): Starting number of flash error codes
ESP_ERR_FLASH_OP_FAIL (0x6001)
ESP_ERR_FLASH_OP_TIMEOUT (0x6002)
ESP_ERR_FLASH_NOT_INITIALISED (0x6003)
ESP_ERR_FLASH_UNSUPPORTED_HOST (0x6004)
ESP_ERR_FLASH_UNSUPPORTED_CHIP (0x6005)
ESP_ERR_FLASH_PROTECTED (0x6006)
ESP_ERR_HTTP_BASE (0x7000): Starting number of HTTP error codes
ESP_ERR_HTTP_MAX_REDIRECT (0x7001): The error exceeds the number of HTTP redirects
ESP_ERR_HTTP_CONNECT (0x7002): Error open the HTTP connection
ESP_ERR_HTTP_WRITE_DATA (0x7003): Error write HTTP data
ESP_ERR_HTTP_FETCH_HEADER (0x7004): Error read HTTP header from server
ESP_ERR_HTTP_INVALID_TRANSPORT (0x7005): There are no transport support for the input scheme
ESP_ERR_HTTP_CONNECTING (0x7006): HTTP connection hasn't been established yet
ESP_ERR_HTTP_EAGAIN (0x7007): Mapping of errno EAGAIN to esp_err_t
ESP_ERR_HTTP_CONNECTION_CLOSED (0x7008): Read FIN from peer and the connection closed
ESP_ERR_ESP_TLS_BASE (0x8000): Starting number of ESP-TLS error codes
ESP_ERR_ESP_TLS_CANNOT_RESOLVE_HOSTNAME (0x8001): Error if hostname couldn't be resolved upon tls connection
ESP_ERR_ESP_TLS_CANNOT_CREATE_SOCKET (0x8002): Failed to create socket
ESP_ERR_ESP_TLS_UNSUPPORTED_PROTOCOL_FAMILY (0x8003): Unsupported protocol family
ESP_ERR_ESP_TLS_FAILED_CONNECT_TO_HOST (0x8004): Failed to connect to host
ESP_ERR_ESP_TLS_SOCKET_SETOPT_FAILED (0x8005): failed to set/get socket option
ESP_ERR_ESP_TLS_CONNECTION_TIMEOUT (0x8006): new connection in esp_tls_low_level_conn connection timeouted
ESP_ERR_ESP_TLS_SE_FAILED (0x8007)
ESP_ERR_ESP_TLS_TCP_CLOSED_FIN (0x8008)
ESP_ERR_MBEDTLS_CERT_PARTLY_OK (0x8010): mbedtls parse certificates was partly successful
ESP_ERR_MBEDTLS_CTR_DRBG_SEED_FAILED (0x8011): mbedtls api returned error
ESP_ERR_MBEDTLS_SSL_SET_HOSTNAME_FAILED (0x8012): mbedtls api returned error
ESP_ERR_MBEDTLS_SSL_CONFIG_DEFAULTS_FAILED (0x8013): mbedtls api returned error
ESP_ERR_MBEDTLS_SSL_CONF_ALPN_PROTOCOLS_FAILED (0x8014): mbedtls api returned error
ESP_ERR_MBEDTLS_X509_CRT_PARSE_FAILED (0x8015): mbedtls api returned error
ESP_ERR_MBEDTLS_SSL_CONF_OWN_CERT_FAILED (0x8016): mbedtls api returned error
ESP_ERR_MBEDTLS_SSL_SETUP_FAILED (0x8017): mbedtls api returned error
ESP_ERR_MBEDTLS_SSL_WRITE_FAILED (0x8018): mbedtls api returned error
ESP_ERR_MBEDTLS_PK_PARSE_KEY_FAILED (0x8019): mbedtls api returned failed
ESP_ERR_MBEDTLS_SSL_HANDSHAKE_FAILED (0x801a): mbedtls api returned failed
ESP_ERR_MBEDTLS_SSL_CONF_PSK_FAILED (0x801b): mbedtls api returned failed
ESP_ERR_MBEDTLS_SSL_TICKET_SETUP_FAILED (0x801c): mbedtls api returned failed
ESP_ERR_WOLFSSL_SSL_SET_HOSTNAME_FAILED (0x8031): wolfSSL api returned error
ESP_ERR_WOLFSSL_SSL_CONF_ALPN_PROTOCOLS_FAILED (0x8032): wolfSSL api returned error
ESP_ERR_WOLFSSL_CERT_VERIFY_SETUP_FAILED (0x8033): wolfSSL api returned error
ESP_ERR_WOLFSSL_KEY_VERIFY_SETUP_FAILED (0x8034): wolfSSL api returned error
ESP_ERR_WOLFSSL_SSL_HANDSHAKE_FAILED (0x8035): wolfSSL api returned failed
ESP_ERR_WOLFSSL_CTX_SETUP_FAILED (0x8036): wolfSSL api returned failed
ESP_ERR_WOLFSSL_SSL_SETUP_FAILED (0x8037): wolfSSL api returned failed
ESP_ERR_WOLFSSL_SSL_WRITE_FAILED (0x8038): wolfSSL api returned failed
ESP_ERR_HTTPS_OTA_BASE (0x9000)
ESP_ERR_HTTPS_OTA_IN_PROGRESS (0x9001)
ESP_ERR_PING_BASE (0xa000)
ESP_ERR_PING_INVALID_PARAMS (0xa001)
ESP_ERR_PING_NO_MEM (0xa002)
ESP_ERR_HTTPD_BASE (0xb000): Starting number of HTTPD error codes
ESP_ERR_HTTPD_HANDLERS_FULL (0xb001): All slots for registering URI handlers have been consumed
ESP_ERR_HTTPD_HANDLER_EXISTS (0xb002): URI handler with same method and target URI already registered
ESP_ERR_HTTPD_INVALID_REQ (0xb003): Invalid request pointer
ESP_ERR_HTTPD_RESULT_TRUNC (0xb004): Result string truncated
ESP_ERR_HTTPD_RESP_HDR (0xb005): Response header field larger than supported
ESP_ERR_HTTPD_RESP_SEND (0xb006): Error occurred while sending response packet
ESP_ERR_HTTPD_ALLOC_MEM (0xb007): Failed to dynamically allocate memory for resource
ESP_ERR_HTTPD_TASK (0xb008): Failed to launch server task/thread
ESP_ERR_HW_CRYPTO_BASE (0xc000): Starting number of HW cryptography module error codes
ESP_ERR_HW_CRYPTO_DS_HMAC_FAIL (0xc001): HMAC peripheral problem
ESP_ERR_HW_CRYPTO_DS_INVALID_KEY (0xc002)
ESP_ERR_HW_CRYPTO_DS_INVALID_DIGEST (0xc004)
ESP_ERR_HW_CRYPTO_DS_INVALID_PADDING (0xc005)
ESP_ERR_MEMPROT_BASE (0xd000): Starting number of Memory Protection API error codes
ESP_ERR_MEMPROT_MEMORY_TYPE_INVALID (0xd001)
ESP_ERR_MEMPROT_SPLIT_ADDR_INVALID (0xd002)
ESP_ERR_MEMPROT_SPLIT_ADDR_OUT_OF_RANGE (0xd003)
ESP_ERR_MEMPROT_SPLIT_ADDR_UNALIGNED (0xd004)
ESP_ERR_MEMPROT_UNIMGMT_BLOCK_INVALID (0xd005)
ESP_ERR_MEMPROT_WORLD_INVALID (0xd006)
ESP_ERR_MEMPROT_AREA_INVALID (0xd007)
ESP_ERR_MEMPROT_CPUID_INVALID (0xd008)
ESP_ERR_TCP_TRANSPORT_BASE (0xe000): Starting number of TCP Transport error codes
ESP_ERR_TCP_TRANSPORT_CONNECTION_TIMEOUT (0xe001): Connection has timed out
ESP_ERR_TCP_TRANSPORT_CONNECTION_CLOSED_BY_FIN (0xe002): Read FIN from peer and the connection has closed (in a clean way)
ESP_ERR_TCP_TRANSPORT_CONNECTION_FAILED (0xe003): Failed to connect to the peer
ESP_ERR_TCP_TRANSPORT_NO_MEM (0xe004): Memory allocation failed
ESP_ERR_NVS_SEC_BASE (0xf000): Starting number of error codes
ESP_ERR_NVS_SEC_HMAC_KEY_NOT_FOUND (0xf001): HMAC Key required to generate the NVS encryption keys not found
ESP_ERR_NVS_SEC_HMAC_KEY_BLK_ALREADY_USED (0xf002): Provided eFuse block for HMAC key generation is already in use
ESP_ERR_NVS_SEC_HMAC_KEY_GENERATION_FAILED (0xf003): Failed to generate/write the HMAC key to eFuse
ESP_ERR_NVS_SEC_HMAC_XTS_KEYS_DERIV_FAILED (0xf004): Failed to derive the NVS encryption keys based on the HMAC-based scheme