How to wire a digital pot on mbhp J19 ?

[mindjuice]

Can anyone explain me how to wire the digipots on J19 (core32stm)?

Regards... :sorcerer:

[philetaylor]

Hi.

Hopefully Jonathan Farmer who did all of the work on the Digipot interface will respond but I would guess that something like this should work:

You will need to "#define DPOT_SPI 2" to use J19

SO of J19 connects to SI of the first MCP42XXX

SI of J19 connects to SO of the second MCP42XXX

SC of J19 connects to SCK of both MCP42XXX

RC1 or RC2 of J19 connects to CS of both MCP42XXX (#define DPOT_SPI_RC_PIN 0 or 1 )

You may find more information about this by reading the source code in %MIOS32_PATH%/trunk/modules/dpot and %MIOS32_PATH%/trunk/apps/tutorials/026_dpot directories.

Cheers

Phil

[mindjuice]

Thank you very much philetaylor

Your wire description works perfectly

test_pcb

:D