From 53f1b365052890f7ea8eb769053329009a3afbb5 Mon Sep 17 00:00:00 2001 From: Raine Date: Sun, 5 Nov 2023 20:52:11 +0100 Subject: [PATCH] feat: new protocol updates --- doc/proto.md | 92 +++++++++++++++++++++++++++++++++++----------------- 1 file changed, 63 insertions(+), 29 deletions(-) diff --git a/doc/proto.md b/doc/proto.md index 0839af3..be7950b 100644 --- a/doc/proto.md +++ b/doc/proto.md @@ -12,7 +12,7 @@ This can be changed with something like TLS but that's up to the implementer. Packets are sent in big endian. | offset | size | name | description | example | -|----------------------------------|---------------------------|---------------|------------------------------------------------------------------------------------|--------------| +| -------------------------------- | ------------------------- | ------------- | ---------------------------------------------------------------------------------- | ------------ | | `0x00` | 1 byte | `version` | This describes the version of the packet | `0x01` | | `0x01` | 4 bytes | `dest` | This describes who the packet is for a.k.a. destination device id | `0xAABBCCDD` | | `0x05` | 4 bytes | `src` | This describes who sent the packet a.k.a. source device id | `0xAABBCCDD` | @@ -52,21 +52,25 @@ The master will not track the broken packet's `packet_id`, so the slave can send Domo has a data framework reliant on data types. These define what kind of data the property holds. -| `data_type` | physical type (rust types) | size | virtual type | description | -|-------------|----------------------------|-----------|---------------------|-----------------------------------------------------------------------------| -| `0x0*` | | | | **Meta** | -| `0x00` | `None` | 0 bytes | Nothing | Nothing, mostly used internally or as example. | -| `0x01` | `Vec` | 2+ bytes | Array | An array of DataTypes. first two bytes is the u16 length | -| `0x1*` | | | | **Simple** | -| `0x10` | `bool` | 1 byte | Switch | A simple switch with two states. `0x00` = off, `0x01` = on, `0x02` = toggle | -| `0x11` | `u8` | 1 byte | Slider | A simple slider with u8 precision. | -| `0x12` | `[u8; 256]` | 256 bytes | Text | A simple bit of text. | -| `0x2*` | | | | **Cosmetic** | -| `0x20` | `[u8; 3]` | 3 bytes | Color | An RGB value. | -| `0x9*` | | | | **Time & Space** | -| `0x90` | `u64` | 8 bytes | Seconds | A simple value that is in seconds. | -| `0xF*` | | | | **Domo types** | -| `0xF0` | `[u8; 4]` | 4 bytes | Domo node reference | A reference to a node. | +| `data_type` | size | type | description | +| ----------- | --------- | ---------- | ---------------------------------------------------------------------- | +| `0x0*` | | | **Meta** | +| `0x00` | 0 bytes | Nothing | Nothing | +| `0x01` | 2+ bytes | Array | An array of DataTypes. first two bytes is the length in u16 BE | +| `0x1*` | | | **Basic** | +| `0x10` | 1 byte | Boolean | `0x00` = false, `0x01` = true, `0x02` = toggle item (reserved for set) | +| `0x11` | 8 bytes | Number | A number. | +| `0x12` | 256 bytes | Text | A simple bit of text. | +| `0x13` | 4 bytes | Identifier | An identifier. | +| `0x2*` | | | **Color** | +| `0x20` | 3 bytes | RGB | An RGB value. | + + ## Dynamic data (`dynamic_data`) @@ -75,7 +79,7 @@ Dynamic data is a data snippet with a `prop_data_type` byte and the data next to > **Note**: this section uses relative offset | offset | size | name | description | example | -|--------|-------------------------------|------------------|-------------------------|---------| +| ------ | ----------------------------- | ---------------- | ----------------------- | ------- | | `0x00` | 1 byte | `prop_data_type` | Describes the data type | `0x00` | | `0x01` | depending on `prop_data_type` | `data` | The data | | @@ -107,7 +111,7 @@ Leave `0` to get a random id. #### Command data | offset | size | name | description | reserved | example | -|--------|---------|-------------|------------------------------------------------------------|----------|--------------| +| ------ | ------- | ----------- | ---------------------------------------------------------- | -------- | ------------ | | `0x14` | 4 bytes | `device_id` | the device identifier. leave `0x00000000` to get random id | no | `0x00000000` | ### `0x02` - Remove node @@ -123,7 +127,7 @@ there is no extra data required. #### Command data | offset | size | name | description | reserved | example | -|--------|----------|-----------------|--------------------------------------------------------------------|----------|---------| +| ------ | -------- | --------------- | ------------------------------------------------------------------ | -------- | ------- | | `0x14` | 32 bytes | `property_name` | The name of the property as a UTF-8 string. | no | "Power" | | `0x34` | 1 byte | `data_type` | The type of data; see "Data types". | no | `0x01` | | `0x35` | 1 byte | `read_only` | Whether the property is readonly.
(`0x00` = no, `0x01` = yes) | no | `0x00` | @@ -133,7 +137,7 @@ there is no extra data required. #### Command data | offset | size | name | description | reserved | example | -|--------|----------|-----------------|---------------------------------------------|----------|---------| +| ------ | -------- | --------------- | ------------------------------------------- | -------- | ------- | | `0x14` | 32 bytes | `property_name` | The name of the property as a UTF-8 string. | no | "Power" | ### `0x0E` - Error @@ -143,7 +147,7 @@ Send a packet to state an error occurred. #### Command data | offset | size | name | description | example | -|--------|-------------------------------|-------------------|---------------------------------|----------| +| ------ | ----------------------------- | ----------------- | ------------------------------- | -------- | | `0x14` | 1 byte | `error_code` | error code; check 'Error codes' | `0x00` | | `0x15` | 2 bytes | `metadata_length` | metadata length | `0x0000` | | `0x17` | `<0x14-0x15:metadata_length>` | `metadata` | metadata | | @@ -151,7 +155,7 @@ Send a packet to state an error occurred. #### Error codes | `status_code` | name | description | recoverable | -|---------------|------------------------|----------------------------------------------------------------------------------------------|-----------------------------------| +| ------------- | ---------------------- | -------------------------------------------------------------------------------------------- | --------------------------------- | | `0x1*` | `net_*` | **Network errors** | | | `0x00` | `net_duplicate_packet` | `reply_to` packet is invalid because another packet was sent recently with same `packet_id`. | resend with different `packet_id` | | `0x01` | `net_broken_packet` | recent packet was broken. | resend packet | @@ -172,37 +176,67 @@ Get a properties value #### Command data | offset | size | name | description | reserved | example | -|--------|----------|-----------------|---------------------------------------------|----------|----------| +| ------ | -------- | --------------- | ------------------------------------------- | -------- | -------- | | `0x14` | 32 bytes | `property_name` | The name of the property as a UTF-8 string. | no | "Power" | -| `0x34` | dynamic | `dynamic_data` | Dynamic data snippet | response | `0x0100` | +| `0x34` | dynamic | `dynamic_data` | Dynamic data snippet | response | `0x0100` | ### `0x11` - Set property #### Command data | offset | size | name | description | reserved | example | -|--------|----------|-----------------|---------------------------------------------|----------|----------| +| ------ | -------- | --------------- | ------------------------------------------- | -------- | -------- | | `0x14` | 32 bytes | `property_name` | The name of the property as a UTF-8 string. | no | "Power" | -| `0x34` | dynamic | `dynamic_data` | Dynamic data snippet | no | `0x0100` | +| `0x34` | dynamic | `dynamic_data` | Dynamic data snippet | no | `0x0100` | ### `0x12` - Reset property #### Command data | offset | size | name | description | reserved | example | -|--------|----------|-----------------|---------------------------------------------|----------|---------| +| ------ | -------- | --------------- | ------------------------------------------- | -------- | ------- | | `0x14` | 32 bytes | `property_name` | The name of the property as a UTF-8 string. | no | "Power" | ### `0x1A` - Subscribe to property | offset | size | name | description | reserved | example | -|--------|----------|-----------------|---------------------------------------------|----------|--------------| +| ------ | -------- | --------------- | ------------------------------------------- | -------- | ------------ | | `0x14` | 4 bytes | `device_id` | Who's property? | no | `0x00000000` | | `0x18` | 32 bytes | `property_name` | The name of the property as a UTF-8 string. | no | "Power" | ### `0x1A` - Unsubscribe to property | offset | size | name | description | reserved | example | -|--------|----------|-----------------|---------------------------------------------|----------|--------------| +| ------ | -------- | --------------- | ------------------------------------------- | -------- | ------------ | | `0x14` | 4 bytes | `device_id` | Who's property? | no | `0x00000000` | | `0x18` | 32 bytes | `property_name` | The name of the property as a UTF-8 string. | no | "Power" | + +## `0xF*` - Raw data transmission + +This is useful for things like OTA updates. + +### `0xF0` - Setup transfer + +Since this procedure is quite expensive (network wise), the sides must shake hands. + +#### Command data + +| offset | size | name | description | reserved | example | +| ------ | --------- | ------ | -------------------- | -------- | ------- | +| `0x14` | 8 bytes | `size` | u64 size of the data | request | `0x00` | +| `0x1c` | 128 bytes | `mime` | media type of data | request | `0x00` | + +### `0xF1` - Data + +This is raw data. +This may be sent without the initial transfer setup for custom implementations. + +#### Command data + +The `sequence_number` is added for redundancy, all data sent will always reply to it's previous data segment. + +| offset | size | name | description | example | +| ------ | -------- | ----------------- | ------------------------------- | ------------ | +| `0x14` | 4 bytes | `sequence_number` | the sequence number of the data | `0x00000000` | +| `0x18` | 4 bytes | `size` | size of this slice of data | `0x00000000` | +| `0x1c` | `` | `data` | the data | | \ No newline at end of file