Logging¶
The Driver Station saves 2 types of log files to disk (in C:\Users\Public\Documents\FRC\Log Files)
for later viewing. A .dslog and a .dsevents.
The log populates the list with any file ending with .dslog, but the Driver Station helpfully names
them with the current date and time. (e.g. 2018_04_22 23_39_25 Sun.dslog)
.dslog¶
Stored in Big Endian
| Field | Length | Type | Comments |
|---|---|---|---|
| Header | 20 | Header | |
| Entries | n | Entry | Array of n entries |
Header¶
| Field | Length | Type | Comments |
|---|---|---|---|
| Version | 4 | uint32 | |
| Unknown | 4 | ||
| Timestamp | 4 | uint32 | Seconds since 1904/1/1 |
| Fractional Seconds? | 1 | uint8 | Divide by 256 to get decimal part of timestamp? |
| Unknown | 7 |
Entry¶
| Field | Length | Type | Comments |
|---|---|---|---|
| Trip Time | 1 | uint8 | x / 15 = ms |
| Packet Loss % | 1 | uint8 | x * 4 |
| Battery | 2 | Battery | xx + yy/256 |
| RoboRIO CPU % | 1 | uint8 | x / 2 |
| Trace | 1 | Trace | |
| CAN Percent | 1 | uint8 | x / 2 |
| Wifi dB | 1 | uint8 | x / 2 |
| Wifi Mb | 1 | uint8 | |
| Unknown | 2 | ||
| PDP Stats | 21 | PDP | |
| Unknown | 3 |
Trace¶
| Field | Mask | Comment |
|---|---|---|
| Brownout | x....... |
|
| Watchdog | .x...... |
|
| DS Teleop | ..x..... |
|
| Unused | ...x.... |
|
| DS Disabled | ....x... |
|
| Robot Teleop | .....x.. |
|
| Robot Auton | ......x. |
|
| Robot Disabled | .......x |
PDP¶
Current for each PDP port is stored as 10 bits, (mostly) packed together. 0-5 are packed and padded into the first 64 bits, 6-11 are packed and padded into the next 64 bits, 12-15 are packed into the next 40 bits. Each of the 10 bit numbers is the current of the port * 8.
| Ports | Bits | Total Bytes |
|---|---|---|
| 0, 1, 2, 3, 4, 5 | 60 bits + 4 padding | 8 bytes |
| 6, 7, 8, 9, 10, 11 | 60 bits + 4 bits padding | 8 bytes |
| 12, 13, 14, 15 | 40 bits | 5 bytes |
.dsevent¶
TODO