| ??? 04/13/07 07:06 Read: times |
#137118 - Circular or Ring Buffer Responding to: ???'s previous message |
Craig Steiner said:
Just use a pointer to the next position in memory. When the pointer gets to the maximum buffer size, just wrap around. Thus you never clear memory but rather just keep wrapping around within the memory you've allocated as your buffer. This technique is know as a "Circular Buffer" or "Ring Buffer" because of the way the pointer (or index) keeps wrapping around - in a circle (or ring). This is an extremely powerful technique, and very commonly used in serial comms - especially interrupt-driven. You would do well to get to know it! Keil has an excellent example on their site - I have used it many times: http://www.keil.com/download/docs/200.asp |
| Topic | Author | Date |
| refreshing serial data | 01/01/70 00:00 | |
| Other approach | 01/01/70 00:00 | |
| Circular or Ring Buffer | 01/01/70 00:00 | |
| A Yet More Clever Approach | 01/01/70 00:00 | |
| the data isn't always consistent | 01/01/70 00:00 | |
| PPP has maximum packet size | 01/01/70 00:00 | |
| I know | 01/01/70 00:00 | |
| here is why | 01/01/70 00:00 | |
not serious I hope | 01/01/70 00:00 | |
| Doesn't PPP have a defined packet format? | 01/01/70 00:00 | |
| mtu sizes | 01/01/70 00:00 | |
| what do you mean???? | 01/01/70 00:00 |