| ??? 07/19/07 14:18 Read: times |
#142031 - echoes of Mr. Ludd Responding to: ???'s previous message |
I have the freedom to use any I/O
if that is an issue, you need to learn how to plan your design before you start. I never used the HW SPI and I really see no reason why I should use it. I come to think of Mr Ludd it is nonsens to use the SPI interface it is nonsense NOT to use the SPI interface. Most of the time you have to create your own timing. Sure, but HW SPI has timing SFR(s), again not a reson for the luddite attitude. Show me how to use the HW SPI in case of the ENC, you have DIN, DOUT, CLK ;-)) is there any way to have 3 PINs at the SPI interface? WHY do you not use the SPI standard signal names?. You may have found some screwy thingy, but I know of no SPI interface (a real HW SPI, not UART mode 0) that do not have MISO, MOSI and SCK. The more advanced ones will have NSS as well. Erik PS be happy that there are no hangings for luddism any more :) |
| Topic | Author | Date |
| AT89S52 and ENC28J60 | 01/01/70 00:00 | |
| Principles - again | 01/01/70 00:00 | |
| Yes, I'm using the ENC28J60 | 01/01/70 00:00 | |
| AT89S52 and ENC28J60 schematic first | 01/01/70 00:00 | |
| what kind of schematic | 01/01/70 00:00 | |
| So there is no need to drive a car | 01/01/70 00:00 | |
| you should do what you want to do | 01/01/70 00:00 | |
| echoes of Mr. Ludd | 01/01/70 00:00 | |
| who is Mr. Ludd ? | 01/01/70 00:00 | |
| your ancestor | 01/01/70 00:00 | |
| yes, thats why Ben is still using an AT89S52 | 01/01/70 00:00 | |
| HUH | 01/01/70 00:00 | |
| Is that true?? | 01/01/70 00:00 | |
| Speed? | 01/01/70 00:00 | |
| for a while | 01/01/70 00:00 | |
| Why would you not use it?? | 01/01/70 00:00 | |
| This shows you how to use the HW SPI | 01/01/70 00:00 | |
| have a look here | 01/01/70 00:00 | |
| Both of which do use the HW SPI! | 01/01/70 00:00 | |
| get it | 01/01/70 00:00 | |
| SPI port at AT89S52 with ENC28J60 | 01/01/70 00:00 | |
| HW SPI in AT89Sxxx? | 01/01/70 00:00 | |
| HW SPI in AT89SXX | 01/01/70 00:00 | |
| Ethernet connector with filters | 01/01/70 00:00 | |
The answer is in the link | 01/01/70 00:00 |