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???
06/22/06 21:45
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 		 #118909 - yes, we ARE mixing, both threads touch s
Responding to: ???'s previous message
Doesn't SPI have a bunch of "features?"
Hardware uC SPI as seen by a master is: Load 8 bits, set a start bit, on each interrupt do the same till you are done. If you are reading, just read the 8 bits on the interrupt.

The only "feature" I can think of is that SPI peripherals have a deselect pin that will "short" them (output = input, no data loaded into the device).

As mentioned before, it's not the current topic, though.
yes, we ARE mixing, both threads touch serial I/O so, no wonder.

Erik




List of 34 messages in thread
TopicAuthorDate
74hc595/597 connection with c51            01/01/70 00:00      
   Any available port pin            01/01/70 00:00      
   I'd suggest you read the datasheet            01/01/70 00:00      
      little more info as u require richard            01/01/70 00:00      
         start it simple and stupd            01/01/70 00:00      
   bit-bang            01/01/70 00:00      
      problem is ...            01/01/70 00:00      
         talking about standard '51...            01/01/70 00:00      
            That's why I want to "fix" it ...            01/01/70 00:00      
         there is'nt so why do you proselytize f            01/01/70 00:00      
            PC's are async, Mode-0 is not            01/01/70 00:00      
               I know that, but 99.17% of all '51 UART            01/01/70 00:00      
                  Do you know what UART means?            01/01/70 00:00      
                     A resounding NO. I use synchrono            01/01/70 00:00      
                        SPI??? Is that in the "bible"            01/01/70 00:00      
                           no, it is not - but it is a very well de            01/01/70 00:00      
                              You're well into nonsense, now, Erik            01/01/70 00:00      
                              you just ignore the real reason            01/01/70 00:00      
                                 This may be a valid topic, but not here.            01/01/70 00:00      
                                    Whenever you use shift registers for I/O            01/01/70 00:00      
                                       Doesn't SPI have a bunch of "features?"            01/01/70 00:00      
                                          yes, we ARE mixing, both threads touch s            01/01/70 00:00      
                                             I don't want to confuse the O/P ...            01/01/70 00:00      
                                                that would be wrong            01/01/70 00:00      
                                                   I think we've lost the O/P            01/01/70 00:00      
                           this may be the answer to your 'prayers'            01/01/70 00:00      
                              Thanks, but which prayers are those?            01/01/70 00:00      
                                 those for a fast synchronous communicati            01/01/70 00:00      
                                    I don't want to use a commercial chip            01/01/70 00:00      
                                       why not            01/01/70 00:00      
                                          If I want to use SPI, I'll build it in            01/01/70 00:00      
                  Do you know what UART means?            01/01/70 00:00      
                     ^%$#@! I didi it again!            01/01/70 00:00      
   Depends on your needs...            01/01/70 00:00      

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