| ??? 10/31/11 22:51 Read: times |
#184495 - SPI at 100Kbps Responding to: ???'s previous message |
it is only attainable if EVERYTHING ELSE (ISRs, main, ...) is stopped. for a while !
Let's say that using burst mode for 1ms every 50ms. Then the slave system is stopped for 1ms and free for operations the other 49ms, that yields to 98% free for normal (not SPI) activities. The master system gives the rate of the slave should be used to accept/respond to commands. |
| Topic | Author | Date |
| SPI Slave in 89S52 | 01/01/70 00:00 | |
| Get real processor | 01/01/70 00:00 | |
| Topic Author Date | 01/01/70 00:00 | |
| Big problem | 01/01/70 00:00 | |
| Look for a different model | 01/01/70 00:00 | |
| Try 8051 BASCOM | 01/01/70 00:00 | |
| at what speed | 01/01/70 00:00 | |
| Interpreters have an easier life. | 01/01/70 00:00 | |
| Soft SPI speed | 01/01/70 00:00 | |
| But how to combine that loop with a real program? | 01/01/70 00:00 | |
| and more | 01/01/70 00:00 | |
| Software master trivial - slave is not | 01/01/70 00:00 | |
| SPI analysis is made, results? | 01/01/70 00:00 | |
| There _may_ be a solution - but maybe not acceptable | 01/01/70 00:00 | |
| sure, and so what? | 01/01/70 00:00 | |
| SPI at 100Kbps | 01/01/70 00:00 | |
| Still gives puny transfer rate with significant limitations | 01/01/70 00:00 | |
| the answer is | 01/01/70 00:00 | |
| Fully Interlocked Handshaking. | 01/01/70 00:00 | |
Quite common | 01/01/70 00:00 |