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At 01:20 PM 30/06/2002 -0700, you wrote:
>Hi all,
>I am writing a software for ds1307 Real Time Processor
>connected to PIC16F877 and have some questions:
>The address of the ds1307 is 0xD0 for write to it and
>0xD1 for read from it. For writing, user has to send,
>after sending 0xD0 to the device, another byte called
>register pointer. This byte is the address of the
>register which is going to be changed. But for
>reading, the document about the ds1307 tells that
>after the user has sent the read-command, the device
>sends an ACK and then begins immediately to send the
>contain of the memory pointed to by the last value in
>the register pointer. Is there any possibility to
>adjust this register pointer to the info which i want
>to read from the device?

IIRC, you do a dummy write just before the read to set the
pointer to whatever address you want to start reading from.
Regards...
___________________________________________
David Duffy        Audio Visual Devices P/L
U8, 9-11 Trade St, Cleveland 4163 Australia
Ph: +61 7 38210362   Fax: +61 7 38210281
New Web: www.audiovisualdevices.com.au
___________________________________________

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