| ??? 07/07/06 23:29 Read: times |
#119838 - ADuC845: Changing ADC Channel slows down |
I'm trying to sample on multiple channels with the 24-bit ADC on the ADuC845, and I've noticed that the sampling rate will be considerably slower compared to the actual sampling rate I've set. Right now, I have the channel switching occur in the ADC ISR, and LabView receives the outgoing packets (which are sent immediately after the ADC ISR). What could be causing such a significant decrease in sampling rate? I'm talking about 3-4x slower than expected. The datasheet mentions that writing to ADC0CON will reset the ADCs, but I can't seem to find how long it takes to recover from the reset. In any case, it shouldn't be enough to slow down a 5 Hz sampling rate to 1 Hz. Any help is appreciated! |
| Topic | Author | Date |
| ADuC845: Changing ADC Channel slows down | 01/01/70 00:00 | |
| Delta sigma adcs | 01/01/70 00:00 | |
| Somewhat related question | 01/01/70 00:00 | |
| AD parts | 01/01/70 00:00 | |
| DMA can affect precision? | 01/01/70 00:00 | |
| Even _code_ can affect precision ... | 01/01/70 00:00 | |
Exactly! | 01/01/70 00:00 | |
| Gotcha | 01/01/70 00:00 | |
| The answer you seek ... | 01/01/70 00:00 | |
| Thanks! | 01/01/70 00:00 |