Stamp code for TPIC6595N?

Archiver

Hello all,
I'm working on controlling some very large (5") seven segment
displays with a stamp and the TI TPIC6595N 8 bit shift register. If anyone
has interfaced to this chip it will save me from reinventing the wheel...

Kind regards to all, Duncan

Archiver

At 12:59 AM 8/21/00 -0400, you wrote:
>
>Hello all,
> I'm working on controlling some very large (5") seven segment
>displays with a stamp and the TI TPIC6595N 8 bit shift register. If anyone
>has interfaced to this chip it will save me from reinventing the wheel...
>
>Kind regards to all, Duncan

Duncan:

I'm using eight of these chips in a 2 x 4 array to latch relays on/off in
a X10 system thanks to help from others on this list a year ago.

Low 8 'BS2-13 serial data to TPIC6595-3 SER IN
Low 9 ' -14 shift reg clock " -13 SRCK
High 10 ' -15 Clear " -8 SRCLR
Low 11 ' -16 register clock " -12 RCK
High 12 ' -17 ON strobe " -9 G
High 13 ' -18 OFF strobe " -9 G

ShiftReg:
'Shift the house code LSB and sum with key code to make a 5 bit address
OutNmbr = (16*(hCode & 1))+nCode
debug "Output# ", dec (OutNmbr+1)

PulsOut 10, 7 'SRCLR=Lo (shift reg clear)
Out8=1 'Inject the lone bit
PulsOut 9,7 'SRCK clock it in
Out8=0
for i=0 to 31 'step it on thru
if (i=OutNmbr) then ShiftReg1
PulsOut 9,7 'SRCK
next
ShiftReg1: 'lone bit is in position-output it
PulsOut 11,7 '14 usec clock the output register
return

OutputON:
Out12=0 'enable the ON transistor
pause RlyPulsTim
Out12=1
debug " ON",cr
return

OutputOFF:
Out13=0 'enable the OFF transistor
pause RlyPulsTim
Out13=1
debug " OFF",cr
return



Wayne Roderick P.E. (EE, ret)
CEO, Teton Short Line, (NMRA life-1721)
e-mail tetonsl@i... Pocatello Idaho, USA
http://www.ida.net/users/tetonsl/railroad
Note new URL- /biz/ becomes /users/

Archiver

At 08:07 AM 8/21/00 -0600, Wayne wrote:

>
>I'm using eight of these chips in a 2 x 4 array to latch relays on/off in
>a X10 system thanks to help from others on this list a year ago.

[noparse][[/noparse]code snipped for brevity]

Thanks for the response Wayne, I had actually got it working on my own last
night but it's *always* great to see another approach. I did it a bit
differently - instead of bit banging it I used Shiftout and just tied SRCK
and RCK together. Also, I'm not bothering to clear the shift register each
time, new data seems to clock in just fine with CLR held high.

Thanks again, Duncan

Archiver

At 11:34 PM 8/21/00 -0400, Duncan wrote:
>Thanks for the response Wayne, I had actually got it working on my own last
>night but it's *always* great to see another approach. I did it a bit
>differently - instead of bit banging it I used Shiftout and just tied SRCK
>and RCK together. Also, I'm not bothering to clear the shift register each
>time, new data seems to clock in just fine with CLR held high.

Duncan:

A couple hours before I read your response, I was addressing a BS2 with
the SHIFTOUT- Yes- it is the better way to go. I'm spitting out 28 commands
to LEDs and switch motors for model railroading use via 3 ports using a
quad string of ancient 74164 that were lounging in the junk box. Works great.
Will be using the SHIFTIN to read 20 push buttons via 74165s- Yeh- junk
box:-)
Beats the heck out of a big handfull of logic on my new staging yard.




Wayne Roderick P.E. (EE, ret)
CEO, Teton Short Line, (NMRA life-1721)
e-mail tetonsl@i... Pocatello Idaho, USA
http://www.ida.net/users/tetonsl/railroad
Note new URL- /biz/ becomes /users/