Synchronous Comms

Hi,
Just a quick question.

If i wish to send 16 bits of data can i extract 1 bit like this?

datapin = temp[loop]

where temp is the word to send, and loop is a for next loop from 0 to 15

and receive in a similar way

temp[loop] = datapin

Bits, Bytes Words and Arrays (melanie)
http://www.picbasic.co.uk/forum/showthread.php?t=544
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Thanks for the info Darrel, some very interesting stuff there. Still cant get it to work but I'll keep on trying.

You may also want to look at the SHIFTIN and SHIFTOUT commands.
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Oops, I see in your other thread you've already tried SHIFTIN/OUT.

Something like this might be a start...

Code:

---

; -- Master Transmit --
For loop = 0 to 15
  datapin = temp.0[loop]
  clkpin = 1
  PauseUS  100
  clkpin = 0
Next loop

; -- Master Receive --
For loop = 0 to 15
  clkpin = 1
  PauseUS  100
  datapin = temp.0[loop]
  clkpin = 0
Next loop
;________________________

; -- Slave Transmit --
For loop = 0 to 15
  while clkpin = 0 : wend
  datapin = temp.0[loop]
  while clkpin = 1 : wend
Next loop

; -- Slave Receive --
For loop = 0 to 15
  while clkpin = 0 : wend
  temp.0[loop] = datapin
  while clkpin = 1 : wend
Next loop

---

This way is "Driven" on both ends. Be sure to have a resistor (1K is good) in the Data line between the 2 PICs.
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