| Erik Malund 01/17/10 15:27 Read: 313 times Mt Airy, Nc USA |
#172523 - executing code takes time Responding to: Yash Chitalia's previous message |
However, I noticed that the above code works seamlessly only for 3 servo motors. If I try to interface even a single motor more to the above code, the other servos start behaving erratically.
What could be the problem? executing code takes time and, for apps like this, you may eventually run out of time. servo d can only wait a finite time before being serviced and at some times the confluence of handling servos a, b and c will just take enough time to make the handling of servo d happen too late. get a faster processor (e.g. a SILabs f12x/f13x) or farm it out to multiple processors. Erik |
| Topic | Author | Date |
| Controlling multiple servo motors | Yash Chitalia | 01/17/10 14:47 |
| executing code takes time | Erik Malund | 01/17/10 15:27 |
| PWM code | Steve M. Taylor | 01/17/10 15:35 |
| Thanks...now, about the PCA timer.. | Yash Chitalia | 01/17/10 16:06 |
| If SDCC Then Keil | Michael Karas | 01/17/10 16:15 |
| PWM IRQ code in C, bitops, 45 byte | Frieder Ferlemann | 01/18/10 05:19 |
| Optimization having no effect. | Yash Chitalia | 01/18/10 11:36 |
| PWM IRQ code in C, lookup table, 32 byte | Frieder Ferlemann | 01/18/10 05:29 |
| I haven't understood the table lookup concept very well... | Yash Chitalia | 01/19/10 00:55 |
| table lookup | Frieder Ferlemann | 01/19/10 02:39 |
| PWM IRQ code in C, lookup table, 30 byte | Frieder Ferlemann | 01/19/10 03:07 |
| Compiler specifics | Andy Neil | 01/19/10 04:35 |
| absolutely-locating xdata at 256 byte boundary | Frieder Ferlemann | 01/19/10 05:00 |
| I see. | Andy Neil | 01/19/10 06:34 |
| An example code.. | Yash Chitalia | 01/20/10 02:20 |
| Keil: Specifics and non-specifics | Andy Neil | 01/20/10 02:50 |
| Not really working... | Yash Chitalia | 01/20/10 03:55 |
| Enough power? | Per Westermark | 01/20/10 09:45 |
| RE: running 32 servo motors | Andy Neil | 01/20/10 10:34 |
| The chip sounds perfect... | Yash Chitalia | 01/18/10 11:47 |
| not worth it | Erik Malund | 01/18/10 12:10 |
| Servo control will become difficult then... | Yash Chitalia | 01/18/10 12:42 |
| output | Andy Peters | 01/18/10 12:52 |
| HCT chips have ... | Erik Malund | 01/18/10 14:12 |
| Eval a concept with a single PCA and 3:8 HCT multiplexer? | Frieder Ferlemann | 01/18/10 14:36 |
| Check their website | Andy Neil | 01/18/10 14:44 |
| Here is the code... | Yash Chitalia | 01/18/10 15:28 |
| "sbit MTRS=P2^0;" is not OK here | Frieder Ferlemann | 01/18/10 16:11 |
| Keil syntax? | Andy Neil | 01/18/10 17:36 |
| "#define" not working.."sbit" works | Yash Chitalia | 01/18/10 23:32 |
| Yes, you were correct originally! | Andy Neil | 01/19/10 01:22 |
| Seconded | Andy Neil | 01/18/10 12:45 |
| Servo_0.1.zip | Murray R. Van Luyn | 01/18/10 15:02 |
links | James Hinnant | 02/18/10 21:10 |
| Eventually feed the guys at http://servomaster.sf.net ? | Frieder Ferlemann | 01/18/10 15:12 |
| servomaster.sf.net FLOSS | James Hinnant | 02/04/10 11:48 |
| Maybe of some use... | James Bowmaster | 02/10/10 14:40 |
| Whoops... found a bug | James Bowmaster | 02/10/10 16:35 |
| What bug? | Andy Neil | 02/10/10 16:41 |
| Bug | James Bowmaster | 02/10/10 18:47 |
| Improved version uploaded | James Bowmaster | 02/12/10 21:26 |