| Louis S 01/15/10 08:06 Read: 291 times |
#172489 - SPI Phase/Polarity Responding to: Erik Malund's previous message |
Hi Erik,
Since I don't have an emulator, I've done some pretty extensive probing via scope. The SPI is configured for mode 0 (cpol = 0, cpha = 0) and the simulator and scope output agree (matches the datasheet expected waveforms). The SPI port is responding as I would expect except for the actual data value coming out of it. I'm seeing instances where address instead of value passing might explain some other glitches, but I've been focusing on the SPI currently since it's the simplest. Louis |
| Topic | Author | Date |
| Simulation vs. Embedded Discrepancy | Louis S | 01/15/10 07:14 |
| Hardware fault? | Andy Neil | 01/15/10 07:39 |
| Responding to: Andy Neil's previous message | Louis S | 01/15/10 07:51 |
| illustration of edge difference? | Erik Malund | 01/15/10 08:00 |
| SPI Phase/Polarity | Louis S | 01/15/10 08:06 |
| address instead of value | Andy Neil | 01/15/10 08:17 |
| Doesn't seem coincidental | Louis S | 01/20/10 13:19 |
| MOVX command fails | Louis S | 01/21/10 09:28 |
| Definitely sounds like a hardware fault! | Andy Neil | 01/21/10 12:01 |
| Have you tried doing this in ASM? | Richard Erlacher | 01/21/10 12:32 |
| The loop in ASM | Louis S | 01/21/10 14:27 |
| I think... | Jez Smith | 01/21/10 15:11 |
| Sounds like hardware again | Andy Neil | 01/21/10 17:34 |
| If this were reduced to the essentials ... | Richard Erlacher | 01/21/10 18:36 |
| Oh Richard | Jez Smith | 01/22/10 01:32 |
| What I was after ... | Richard Erlacher | 01/21/10 18:30 |
| Reducing to Essentials | Louis S | 01/22/10 10:56 |
| RE: Magic Switch On The Compiler | Andy Neil | 01/22/10 12:21 |
| Emulator trace | Louis S | 01/22/10 12:59 |
| Yes | Neil Kurzman | 01/23/10 02:39 |
| SOLVED | Louis S | 01/25/10 11:10 |
| A bit ocnfused | Andy Neil | 01/25/10 11:24 |
| Emulator and AUXR | Louis S | 01/25/10 14:15 |
Things do tend to work best... | Andy Neil | 01/25/10 14:54 |
| one guess with a question | Erik Malund | 01/21/10 13:46 |
| Memory has plenty of gaps | Louis S | 01/21/10 14:29 |
| That doesn't make sense! | Andy Neil | 01/23/10 03:25 |
| Sloppy language on my part | Louis S | 01/23/10 23:00 |
| Am I missing something | Neil Kurzman | 01/21/10 19:06 |
| questions/request | Erik Malund | 01/22/10 06:52 |