[INSTRM-609] Make SPI bit-banging take less time. Created: 13/Feb/19 Updated: 13/Feb/19 Resolved: 13/Feb/19 |
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| Status: | Done |
| Project: | Instrument control development |
| Component/s: | ics_xcu_smb |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Task | Priority: | Normal |
| Reporter: | cloomis | Assignee: | cloomis |
| Resolution: | Done | Votes: | 0 |
| Labels: | SM1 | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Story Points: | 1 |
| Description |
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The spi_bus.py loop puts 0 and 1 bits on the SPI bus by flipping, separated by time.sleep(1e-6). Which of course take ~75us. This particular loop should probably be in cython/c, but for now use a null method, which takes about 1 us on a Pi3. |
| Comments |
| Comment by cloomis [ 13/Feb/19 ] |
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Merged at 4084e64, tagged 1.1.0 |