| gateway_id | [string](#string) | | The sending gateway. Can we use this to authenticate/prevent fake nodeid impersonation for senders? - i.e. use gateway/mesh id (which is authenticated) + local node id as the globally trusted nodenum |
This message is never sent over the wire, but it is used for serializing DB
state to flash in the device code
FIXME, since we write this each time we enter deep sleep (and have infinite
flash) it would be better to use some sort of append only data structure for
the receive queue and use the preferences store for the other stuff
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| radio | [RadioConfig](#RadioConfig) | | |
| my_node | [MyNodeInfo](#MyNodeInfo) | | Read only settings/info about this node |
| owner | [User](#User) | | My owner info |
| node_db | [NodeInfo](#NodeInfo) | repeated | |
| receive_queue | [MeshPacket](#MeshPacket) | repeated | Received packets saved for delivery to the phone |
| version | [uint32](#uint32) | | A version integer used to invalidate old save files when we make incompatible changes This integer is set at build time and is private to NodeDB.cpp in the device code. |
| rx_text_message | [MeshPacket](#MeshPacket) | | We keep the last received text message (only) stored in the device flash, so we can show it on the screen. Might be null |
| no_save | [bool](#bool) | | Used only during development. Indicates developer is testing and changes should never be saved to flash. |
| secondary_channels | [ChannelSettings](#ChannelSettings) | repeated | Secondary channels are only used for encryption/decryption/authentication purposes. Their radio settings (freq etc) are ignored, only psk is used. Note: this is not kept inside of RadioConfig because that would make ToRadio/FromRadio worse case > 512 bytes (to big for BLE) |
| tx_power | [int32](#int32) | | If zero then, use default max legal continuous power (ie. something that won't burn out the radio hardware) In most cases you should use zero here. |
| modem_config | [ChannelSettings.ModemConfig](#ChannelSettings.ModemConfig) | | Note: This is the 'old' mechanism for specifying channel parameters. Either modem_config or bandwidth/spreading/coding will be specified - NOT BOTH. As a heuristic: If bandwidth is specified, do not use modem_config. Because protobufs take ZERO space when the value is zero this works out nicely. This value is replaced by bandwidth/spread_factor/coding_rate. If you'd like to experiment with other options add them to MeshRadio.cpp in the device code. |
| bandwidth | [uint32](#uint32) | | Bandwidth in MHz Certain bandwidth numbers are 'special' and will be converted to the appropriate floating point value: 31 -> 31.25MHz |
| spread_factor | [uint32](#uint32) | | A number from 7 to 12. Indicates number of chirps per symbol as 1<<spread_factor. |
| coding_rate | [uint32](#uint32) | | The denominator of the coding rate. ie for 4/8, the value is 8. 5/8 the value is 5. |
| channel_num | [uint32](#uint32) | | A channel number between 1 and 13 (or whatever the max is in the current region). If ZERO then the rule is "use the old channel name hash based algoritm to derive the channel number") If using the hash algorithm the channel number will be: hash(channel_name) % NUM_CHANNELS (Where num channels depends on the regulatory region). NUM_CHANNELS_US is 13, for other values see MeshRadio.h in the device code. hash a string into an integer - djb2 by Dan Bernstein. - http://www.cse.yorku.ca/~oz/hash.html unsigned long hash(char *str) { unsigned long hash = 5381; int c; while ((c = *str++) != 0) hash = ((hash << 5) + hash) + (unsigned char) c; return hash; } |
| psk | [bytes](#bytes) | | A simple preshared key for now for crypto. Must be either 0 bytes (no crypto), 16 bytes (AES128), or 32 bytes (AES256) A special shorthand is used for 1 byte long psks. These psks should be treated as only minimally secure, because they are listed in this source code. Those bytes are mapped using the following scheme: 0 = No crypto 1 = The special default channel key: {0xd4, 0xf1, 0xbb, 0x3a, 0x20, 0x29, 0x07, 0x59, 0xf0, 0xbc, 0xff, 0xab, 0xcf, 0x4e, 0x69, 0xbf} 2 through 10 = The default channel key, except with 1 through 9 added to the last byte |
| name | [string](#string) | | A SHORT name that will be packed into the URL. Less than 12 bytes. Something for end users to call the channel If this is the empty string it is assumed that this channel is the special (minimially secure) "Default" channel. In user interfaces it should be rendered as a local language translation of "X". For channel_num hashing empty string will be treated as "X". Where "X" is selected based on the english words listed above for ModemConfig |
| id | [fixed32](#fixed32) | | Used to construct a globally unique channel ID. The full globally unique ID will be: "name.id" where ID is shown as base36. Assuming that the number of meshtastic users is below 20K (true for a long time) the chance of this 64 bit random number colliding with anyone else is super low. And the penalty for collision is low as well, it just means that anyone trying to decrypt channel messages might need to try multiple candidate channels. Any time a non wire compatible change is made to a channel, this field should be regenerated. There are a small number of 'special' globally known (and fairly) insecure standard channels. Those channels do not have a numeric id included in the settings, but instead it is pulled from a table of well known IDs. (see Well Known Channels FIXME) |
| uplink_enabled | [bool](#bool) | | If true, messages on the mesh will be sent to the *public* internet by any gateway ndoe |
| downlink_enabled | [bool](#bool) | | If true, messages seen on the internet will be forwarded to the local mesh. |
| config_complete_id | [uint32](#uint32) | | sent as true once the device has finished sending all of the responses to want_config recipient should check if this ID matches our original request nonce, if not, it means your config responses haven't started yet. |
| rebooted | [bool](#bool) | | Sent to tell clients the radio has just rebooted. Set to true if present. Not used on all transports, currently just used for the serial console. |
| channel | [ChannelSettings](#ChannelSettings) | | One of the channels, they are all sent during config download The first channel is the "primary" channel all other channels are secondary channels The primary channel is also sent as part of RadioConfig (which is deprecated, but to support older clients) |
| from | [uint32](#uint32) | | The sending node number. Note: Our crypto implementation uses this field as well. See docs/software/crypto.md for details. FIXME - really should be fixed32 instead, this encoding only hurts the ble link though. |
| to | [uint32](#uint32) | | The (immediate) destination for this packet. If we are using routing, the final destination will be in payload.dest FIXME - really should be fixed32 instead, this encoding only hurts the ble link though. |
| channel_index | [uint32](#uint32) | | If set, this indicates the index in the secondary_channels table that this packet was sent/received on. If unset, packet was on the primary channel. A particular node might know only a subset of channels in use on the mesh. Therefore channel_index is inherently a local concept and meaningless to send between nodes. |
| id | [uint32](#uint32) | | A unique ID for this packet. Always 0 for no-ack packets or non broadcast packets (and therefore take zero bytes of space). Otherwise a unique ID for this packet, useful for flooding algorithms. ID only needs to be unique on a _per sender_ basis, and it only needs to be unique for a few minutes (long enough to last for the length of any ACK or the completion of a mesh broadcast flood). Note: Our crypto implementation uses this id as well. See docs/software/crypto.md for details. FIXME - really should be fixed32 instead, this encoding only hurts the ble link though. |
| rx_time | [fixed32](#fixed32) | | The time this message was received by the esp32 (secs since 1970). Note: this field is _never_ sent on the radio link itself (to save space) Times are typically not sent over the mesh, but they will be added to any Packet (chain of SubPacket) sent to the phone (so the phone can know exact time of reception) |
| rx_snr | [float](#float) | | Never* sent over the radio links. Set during reception to indicate the SNR of this packet. Used to collect statistics on current link waulity. |
| hop_limit | [uint32](#uint32) | | If unset treated as zero (no fowarding, send to adjacent nodes only) if 1, allow hopping through one node, etc... For our usecase real world topologies probably have a max of about 3. This field is normally placed into a few of bits in the header. |
| want_ack | [bool](#bool) | | This packet is being sent as a reliable message, we would prefer it to arrive at the destination. We would like to receive a ack packet in response. Broadcasts messages treat this flag specially: Since acks for broadcasts would rapidly flood the channel, the normal ack behavior is suppressed. Instead, the original sender listens to see if at least one node is rebroadcasting this packet (because naive flooding algoritm). If it hears that the odds (given typical LoRa topologies) the odds are very high that every node should eventually receive the message. So FloodingRouter.cpp generates an implicit ack which is delivered to the original sender. If after some time we don't hear anyone rebroadcast our packet, we will timeout and retransmit, using the regular resend logic. Note: This flag is normally sent in a flag bit in the header when sent over the wire |
<aname=".MyNodeInfo"></a>
### MyNodeInfo
Unique local debugging info for this node
Note: we don't include position or the user info, because that will come in the
| my_node_num | [uint32](#uint32) | | Tells the phone what our node number is, default starting value is lowbyte of macaddr, but it will be fixed if that is already in use |
| has_gps | [bool](#bool) | | Note: this bool no longer means "we have our own GPS". Because gps_operation is more advanced, but we'd like old phone apps to keep working. So for legacy reasons we set this flag as follows: if false it would be great if the phone can help provide gps coordinates. If true we don't need location assistance from the phone. |
| num_channels | [int32](#int32) | | # of legal channels (set at build time in the device flash image) |
| region | [string](#string) | | The region code for my radio (US, CN, etc...) Note: This string is deprecated. The 1.0 builds populate it based on the flashed firmware name. But for newer builds this string will be unpopulated (missing/null). For those builds you should instead look at the new read/write region enum in UserSettings The format of this string was 1.0-US or 1.0-CN etc.. Or empty string if unset. |
| error_code | [CriticalErrorCode](#CriticalErrorCode) | | An error message we'd like to report back to the mothership through analytics. It indicates a serious bug occurred on the device, the device coped with it, but we still want to tell the devs about the bug. This field will be cleared after the phone reads MyNodeInfo (i.e. it will onlybe reported once) a numeric error code to go with error message, zero means no error |
| error_count | [uint32](#uint32) | | The total number of errors this node has ever encountered (well - since the last time we discarded preferences) |
| packet_id_bits | [uint32](#uint32) | | How many bits are used for the packetid. If zero it is assumed we use eight bit packetids Old device loads (older that 0.6.5 do not populate this field, but all newer loads do). |
| current_packet_id | [uint32](#uint32) | | **Deprecated.** This field was a bad idea - because the odds are so low of a collision API clients should instead pick a randrom 32 bit number as their initial packetid and just keep incrementing that. Otherwise if a client connects two times in a row and used this value (and the device had not sent a packet on its own between those two times) current_packet_id would not have changed. Then the client would be sending duplicate values.
The current ID this node is using for sending new packets (exposed so that the phone can self assign packet IDs if it wishes by picking packet IDs from the opposite side of the pacekt ID space). Old device loads (older that 0.6.5 do not populate this field, but all newer loads do). FIXME: that we need to expose this is a bit of a mistake. Really the phones should be modeled/treated as 1st class nodes like any other, and the radio connected to the phone just routes like any other. This would allow all sorts of clean/clever routing topologies in the future. |
| node_num_bits | [uint32](#uint32) | | How many bits are used for the nodenum. If zero it is assumed we use eight bit nodenums New device loads will user 32 bit nodenum. Old device loads (older that 0.6.5 do not populate this field, but all newer loads do). |
| message_timeout_msec | [uint32](#uint32) | | How long before we consider a message abandoned and we can clear our caches of any messages in flight Normally quite large to handle the worst case message delivery time, 5 minutes. Formerly called FLOOD_EXPIRE_TIME in the device code |
| min_app_version | [uint32](#uint32) | | The minimum app version that can talk to this device. Phone/PC apps should compare this to their build number and if too low tell the user they must update their app |
| snr | [float](#float) | | Returns the Signal-to-noise ratio (SNR) of the last received message, as measured by the receiver. Return SNR of the last received message in dB |
| next_hop | [uint32](#uint32) | | Returns the last measured frequency error. The LoRa receiver estimates the frequency offset between the receiver centre frequency and that of the received LoRa signal. This function returns the estimates offset (in Hz) of the last received message. Caution: this measurement is not absolute, but is measured relative to the local receiver's oscillator. Apparent errors may be due to the transmitter, the receiver or both. \return The estimated centre frequency offset in Hz of the last received message. int32 frequency_error = 6;
| time | [fixed32](#fixed32) | | This is usually not sent over the mesh (to save space), but it is sent from the phone so that the local device can set its RTC If it is sent over the mesh (because there are devices on the mesh without GPS), it will only be sent by devices which has a hardware GPS clock. seconds since 1970 |
| position_broadcast_secs | [uint32](#uint32) | | We should send our position this often (but only if it has changed significantly) Defaults to 15 minutes |
| wait_bluetooth_secs | [uint32](#uint32) | | Power management state machine option. See https://github.com/meshtastic/Meshtastic-device/blob/master/docs/software/power.md for details. 0 for default of 1 minute |
| screen_on_secs | [uint32](#uint32) | | Power management state machine option. See https://github.com/meshtastic/Meshtastic-device/blob/master/docs/software/power.md for details. 0 for default of one minute |
| phone_timeout_secs | [uint32](#uint32) | | Power management state machine option. See https://github.com/meshtastic/Meshtastic-device/blob/master/docs/software/power.md for details. 0 for default of 15 minutes |
| phone_sds_timeout_sec | [uint32](#uint32) | | Power management state machine option. See https://github.com/meshtastic/Meshtastic-device/blob/master/docs/software/power.md for details. 0 for default of two hours, MAXUINT for disabled |
| mesh_sds_timeout_secs | [uint32](#uint32) | | Power management state machine option. See https://github.com/meshtastic/Meshtastic-device/blob/master/docs/software/power.md for details. 0 for default of two hours, MAXUINT for disabled |
| sds_secs | [uint32](#uint32) | | Power management state machine option. See https://github.com/meshtastic/Meshtastic-device/blob/master/docs/software/power.md for details. 0 for default of one year |
| ls_secs | [uint32](#uint32) | | Power management state machine option. See https://github.com/meshtastic/Meshtastic-device/blob/master/docs/software/power.md for details. 0 for default of 3600 |
| min_wake_secs | [uint32](#uint32) | | Power management state machine option. See https://github.com/meshtastic/Meshtastic-device/blob/master/docs/software/power.md for details. 0 for default of 10 seconds |
| is_router | [bool](#bool) | | Are we operating as a router. Changes behavior in the following ways: The device will only sleep for critically low battery level (i.e. always tries to stay alive for the mesh) In the future routing decisions will preferentially route packets through nodes with this attribute (because assumed good line of sight) |
| is_low_power | [bool](#bool) | | If set, we are powered from a low-current source (i.e. solar), so even if it looks like we have power flowing in we should try to minimize power consumption as much as possible. YOU DO NOT NEED TO SET THIS IF YOU'VE set is_router (it is implied in that case). |
| fixed_position | [bool](#bool) | | If set, this node is at a fixed position. We will generate GPS position updates at the regular interval, but use whatever the last lat/lon/alt we have for the node. The lat/lon/alt can be set by an internal GPS or with the help of the app. |
| factory_reset | [bool](#bool) | | This setting is never saved to disk, but if set, all device settings will be returned to factory defaults. (Region, serial number etc... will be preserved) |
| debug_log_enabled | [bool](#bool) | | By default we turn off logging as soon as an API client connects (to keep shared serial link quiet). Set this to true to leave the debug log outputting even when API is active. |
| location_share | [LocationSharing](#LocationSharing) | | How our location is shared with other nodes (or the local phone) |
| gps_operation | [GpsOperation](#GpsOperation) | | How the GPS hardware in this unit is operated. Note: This is independent of how our location is shared with other devices. For that see LocationSharing |
| gps_update_interval | [uint32](#uint32) | | How often should we try to get GPS position (in seconds) when we are in GpsOpMobile mode? or zero for the default of once every 30 seconds or a very large value (maxint) to update only once at boot. |
| gps_attempt_time | [uint32](#uint32) | | How long should we try to get our position during each gps_update_interval attempt? (in seconds) Or if zero, use the default of 30 seconds. If we don't get a new gps fix in that time, the gps will be put into sleep until the next gps_update_rate window. |
| ignore_incoming | [uint32](#uint32) | repeated | If true, radio should not try to be smart about what packets to queue to the phone bool keep_all_packets = 101;
If true, we will try to capture all the packets sent on the mesh, not just the ones destined to our node. bool promiscuous_mode = 102;
For testing it is useful sometimes to force a node to never listen to particular other nodes (simulating radio out of range). All nodenums listed in ignore_incoming will have packets they send droped on receive (by router.cpp) |
| serialplugin_enabled | [bool](#bool) | | Preferences for the SerialPlugin
FIXME - Move this out of UserPreferences and into a section for plugin configuration. |
| serialplugin_echo | [bool](#bool) | | |
| serialplugin_rxd | [uint32](#uint32) | | |
| serialplugin_txd | [uint32](#uint32) | | |
| serialplugin_timeout | [uint32](#uint32) | | |
| serialplugin_mode | [uint32](#uint32) | | |
| ext_notification_plugin_enabled | [bool](#bool) | | Preferences for the ExternalNotificationPlugin
FIXME - Move this out of UserPreferences and into a section for plugin configuration. |
| route_request | [RouteDiscovery](#RouteDiscovery) | | A route request going from the requester FIXME - these route messages should be moved into regular data packets and use the regular on device plugin mechanism. |
| error_reason | [ErrorReason](#ErrorReason) | | A failure in delivering a message (usually used for routing control messages, but might be provided in addition to ack.fail_id to provide details on the type of failure). |
| position | [Position](#Position) | | **Deprecated.** Prior to 1.20 positions were communicated as a special payload type, now they are GPS_POSITION_APP Data |
| user | [User](#User) | | **Deprecated.** Prior to 1.20 positions were communicated as a special payload type, now they are MESH_USERINFO_APP |
| want_response | [bool](#bool) | | Not normally used, but for testing a sender can request that recipient responds in kind (i.e. if it received a position, it should unicast back it's position). Note: that if you set this on a broadcast you will receive many replies. |
| success_id | [uint32](#uint32) | | This packet is a requested acknoledgement indicating that we have received the specified message ID. This packet type can be used both for immediate (0 hops) messages or can be routed through multiple hops if dest is set. Note: As an optimization, recipients can _also_ populate a field in payload if they think the recipient would appreciate that extra state. |
| dest | [uint32](#uint32) | | The address of the destination node. This field is is filled in by the mesh radio device software, applicaiton layer software should never need it. RouteDiscovery messages _must_ populate this. Other message types might need to if they are doing multihop routing. |
| source | [uint32](#uint32) | | The address of the original sender for this message. This field should _only_ be populated for reliable multihop packets (to keep packets small). |
| original_id | [uint32](#uint32) | | Only used in route_error messages. Indicates the original message ID that this message is reporting failure on. |
| packet | [MeshPacket](#MeshPacket) | | send this packet on the mesh |
| want_config_id | [uint32](#uint32) | | phone wants radio to send full node db to the phone, This is typically the first packet sent to the radio when the phone gets a bluetooth connection. The radio will respond by sending back a MyNodeInfo, a owner, a radio config and a series of FromRadio.node_infos, and config_complete the integer you write into this field will be reported back in the config_complete_id response this allows clients to never be confused by a stale old partially sent config. |
| set_radio | [RadioConfig](#RadioConfig) | | set the radio provisioning for this node |
| set_owner | [User](#User) | | Set the owner for this node |
| set_channel | [ChannelSettings](#ChannelSettings) | | Set channels (using the new API). The first sent channel is assumed to be channel index 0 the "primary channel". Following records are secondary channels. |
| id | [string](#string) | | A globally unique ID string for this user. In the case of Signal that would mean +16504442323, for the default macaddr derived id it would be !<8 hexidecimal bytes> |
| DATA_PAYLOAD_LEN | 240 | From mesh.options note: this payload length is ONLY the bytes that are sent inside of the radiohead packet Data.payload max_size:240 |
| GpsOpStationary | 1 | Note: This mode was removed, because it is identical go GpsOpMobile with a gps_update_rate of once per day
This node is mostly stationary, we should try to get location only once per day, Once we have that position we should turn the GPS to sleep mode This is the recommendated configuration for stationary 'router' nodes |
| GpsOpMobile | 2 | This node is mobile and we should get GPS position at a rate governed by gps_update_rate |
| GpsOpTimeOnly | 3 | We should only use the GPS to get time (no location data should be acquired/stored) Once we have the time we treat gps_update_interval as MAXINT (i.e. sleep forever) |
| GpsOpDisabled | 4 | GPS is always turned off - this mode is not recommended - use GpsOpTimeOnly instead |
<aname=".LocationSharing"></a>
### LocationSharing
How our location is shared with other nodes (or the local phone)
| Name | Number | Description |
| ---- | ------ | ----------- |
| LocUnset | 0 | This is the default and treated as LocEnabled) |
| LocEnabled | 1 | We are sharing our location |
| LocDisabled | 2 | We are not sharing our location (if the unit has a GPS it will default to only get time - i.e. GpsOpTimeOnly) |
256-511 Use one of these portnums for your private applications that you don't want to register publically
All other values are reserved.
Note: This was formerly a Type enum named 'typ' with the same id #
We have change to this 'portnum' based scheme for specifying app handlers for particular payloads.
This change is backwards compatible by treating the legacy OPAQUE/CLEAR_TEXT values identically.
| Name | Number | Description |
| ---- | ------ | ----------- |
| UNKNOWN_APP | 0 | Deprecated: do not use in new code (formerly called OPAQUE) A message sent from a device outside of the mesh, in a form the mesh does not understand NOTE: This must be 0, because it is documented in IMeshService.aidl to be so |
| TEXT_MESSAGE_APP | 1 | A simple UTF-8 text message, which even the little micros in the mesh can understand and show on their screen eventually in some circumstances even signal might send messages in this form (see below) Formerly called CLEAR_TEXT |
| REMOTE_HARDWARE_APP | 2 | A message receive acknowledgement, sent in cleartext - allows radio to show user that a message has been read by the recipient, optional
Note: this concept has been removed for now. Once READACK is implemented, use the new packet type/port number stuff?
@exclude
CLEAR_READACK = 2;
Reserved for built-in GPIO/example app. See remote_hardware.proto/HardwareMessage for details on the message sent/received to this port number |
| SERIAL_APP | 64 | Provides a hardware serial interface to send and receive from the Meshtastic network. Connect to the RX/TX pins of a device with 38400 8N1. Packets received from the Meshtastic network is forwarded to the RX pin while sending a packet to TX will go out to the Mesh network. Maximum packet size of 240 bytes.
Maintained by Jm Casler (MC Hamster) : jm@casler.org |
| PRIVATE_APP | 256 | Private applications should use portnums >= 256. To simplify initial development and testing you can use "PRIVATE_APP" in your code without needing to rebuild protobuf files (via bin/regin_protos.sh) |
| gpio_mask | [uint64](#uint64) | | What gpios are we changing. Not used for all MessageTypes, see MessageType for details |
| gpio_value | [uint64](#uint64) | | For gpios that were listed in gpio_mask as valid, what are the signal levels for those gpios. Not used for all MessageTypes, see MessageType for details |
| <aname="int32"/> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int | int32 | int | integer | Bignum or Fixnum (as required) |
| <aname="int64"/> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long | int64 | long | integer/string | Bignum |
| <aname="sint32"/> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int | int32 | int | integer | Bignum or Fixnum (as required) |
| <aname="sint64"/> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long | int64 | long | integer/string | Bignum |
| <aname="fixed32"/> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int | uint32 | uint | integer | Bignum or Fixnum (as required) |
| <aname="fixed64"/> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long | uint64 | ulong | integer/string | Bignum |
| <aname="sfixed32"/> sfixed32 | Always four bytes. | int32 | int | int | int32 | int | integer | Bignum or Fixnum (as required) |
