| ??? 01/09/12 20:55 Read: times |
#185398 - Your maths look fine Responding to: ???'s previous message |
As you have already noticed, the RCAP2 method will produce 31250 baud from 1MHz upwards for whole MHz values. It happens that 11.059 is pretty near 11 MHz.
The only reason for using 'baud-friendly' crystals is when you want all the friendly bauds: 9600, 19200, ... 230400. You can get 9600 baud with many crystals. 230400 is less easy. The Chinese STC12C5Axxx single-clockers can clock their UARTs at faster speeds. They even have two UARTs. So can several other 8051 variants. If you are only using Midi and not RS232, use whole MHz. e.g. 8, 12, 16, 20, 24MHz Otherwise choose 11.059 or 22.118 MHz David. |
| Topic | Author | Date |
| 31.25K Baud Rate w/Crystals Other Than 6, 12 or 24MHz | 01/01/70 00:00 | |
| Use Timer2 since a S52 has a timer2 | 01/01/70 00:00 | |
| Timer2 Baud Rate | 01/01/70 00:00 | |
| Your maths look fine | 01/01/70 00:00 | |
| I just got the calculator out | 01/01/70 00:00 | |
It Works!!! | 01/01/70 00:00 |