The Draw Machine Project 'Loader' can load drawinstruction files and feed them line by line to the painter/plotter/motioncontroller via usb-serial port.
| start | length | description | data/type |
|---|---|---|---|
| 0 | 20 | header | "DRI::DrawInstruction" |
| 20 | 4 | .dri version | int32 |
| 24 | 8 | number of instructions | int64 |
| 32 | 8 | start byte index of payload | int64 |
| 40 | 1 | size per instruction | uint8 |
| ----- | ----- | ----- | ----- |
| start + index*size | size | drawinstruction | |
| ... | ... | ... |
The payload is interleaved with a 0x00 byte spacer.
| start | length | description | data/type |
|---|---|---|---|
| 0 | 10 | header | 10 x 0xFF |
| 10 | 1 | size of payload | uint8 |
| 11 | 8 | index | int64 |
| 20 | 1 | linetype | uint8 |
| 22 | 1 | x direction | int8 |
| 24 | 1 | y direction | int8 |
| 26 | 8 | start X | int64 |
| 35 | 8 | start Y | int64 |
| 44 | 8 | end X | int64 |
| 53 | 8 | end Y | int64 |
| 62 | 8 | delta X | int64 |
| 71 | 8 | delta Y | int64 |
| 80 | 8 | delta XX | int64 |
| 89 | 8 | delta YY | int64 |
| 98 | 8 | delta XY | int64 |
| 107 | 8 | error | int64 |
| 116 | 8 | steps | int64 |
| 124 | 4 | checksum | int32 |