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???
05/11/09 11:49
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 		 #165232 - Dear Stefan
Responding to: ???'s previous message
As you have told me, to keep the SCLK low when "void convert_and_send(unsigned char hex_data1)" finishes.
But the problem is that during the program, the functions run as the below sequence :

1)void convert_and_send(unsigned char hex_data1)
2)unsigned char receive_convert(void)

Now when the function 1 ends, the SCLK stays HIGH, then just after that the function 2 runs. Now the 2 function starts off with SCLK as HIGH.We cannot transform the SCLK form LOW to HIGH or vice versa in between the two functions or the data bit will be lost.

Also, we read the bits from the 1380 on the HIGH to LOW edge and write to the 1380 on the LOW to HIGH edge according to the datasheet.

Also, the SCLK is LOW when the system is IDLE, i.e. after the function 2.

What else could be wrong . . ! ! !

List of 39 messages in thread
TopicAuthorDate
Interfacing HT1380 with 89C51 in C            01/01/70 00:00      
   It looks like you should read when clock is high            01/01/70 00:00      
      Dear David            01/01/70 00:00      
         Yes. You read after the -ve edge.            01/01/70 00:00      
            Should shift before assign            01/01/70 00:00      
               Dear Per            01/01/70 00:00      
                  Dear Ackhil,            01/01/70 00:00      
                     Amazing . . . ! ! !            01/01/70 00:00      
                        Are you a young man ?            01/01/70 00:00      
            David            01/01/70 00:00      
   keep SCLK low when idle            01/01/70 00:00      
      Dear Stefan            01/01/70 00:00      
         re            01/01/70 00:00      
            Dear Stefan            01/01/70 00:00      
   Still no luck ! !            01/01/70 00:00      
      Code?            01/01/70 00:00      
         Sorry for the incorrect post            01/01/70 00:00      
            Please format your code            01/01/70 00:00      
      keep SCLK low and...pen&paper and...            01/01/70 00:00      
   Dear stefan and david            01/01/70 00:00      
      Do you expect people to format and correct code every t            01/01/70 00:00      
         true 99% of the time            01/01/70 00:00      
            a neat program makes a happy programmer            01/01/70 00:00      
         I tried a pen and paper            01/01/70 00:00      
            'arranging' is good, but how about comments?            01/01/70 00:00      
               I'll improve on that front as well ! !            01/01/70 00:00      
      Hi Akhil , check this            01/01/70 00:00      
         Dear Stefan            01/01/70 00:00      
            Dear Stefan            01/01/70 00:00      
               Congratulations. a good write() and read()            01/01/70 00:00      
                  no luck            01/01/70 00:00      
                     You can always send a clock from 8051.            01/01/70 00:00      
                        i'll do that ! !            01/01/70 00:00      
                        Dear David            01/01/70 00:00      
                           at least X2 must be free, not grounded            01/01/70 00:00      
                           32Mhz ?!            01/01/70 00:00      
                           Do it carefully            01/01/70 00:00      
                              Dear David            01/01/70 00:00      
                                 I am sure it is something simple.            01/01/70 00:00      

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