The J-PORT can issue error messages on malformed packets or if an internal error occurs. This is a
simple error reporting system to allow users to act as soon as possible. These messages are
automatically issued as a reply to an instruction received.
Response
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|
| 255 | 10 | S | ERR | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Response Structure
| Byte | Value | Size | Type | Description |
|---|
| 0 | 255 | 1 | BIN | Error message header |
| 1 | 10 | 1 | BIN | J-PORT address |
| 2 | S | 1 | BIN | Peripheral ID (or intended target recipient ID) |
| 3 | Err | 1 | BIN | Error code |
Error Codes
| Error Code | Description |
|---|
| 50 | Malformed or invalid instruction code |
| 10 | Message not delivered |
| 30 | Peripheral not reachable |