Using an Arduino Wifi Shield with the Arduino micro

hello,

i rather new arduino have played around bit. first project using arduino uno rev3 arduino wifi shield stacked on it. program sending digital inputs bits on wifi pc had program translate visible actions. arduino had i2c lcd screen connected see button pressed. worked rather well.

but wanted work out same project arduino micro. because of small size , want use make own programmable wifi control.
at first glance arduino micro seems have neccesary connections , bits.
- boards powered usb, can powered 9v or 12v adapter on vin pin.
- wifi shield communicates through spi icsp connector, micro has same icsp connector , can communicate in spi. thought safe there.
- wifi shield requires +5v comes icsp connector.
- pin 7 on micro has been connected pin 7 on wifi shield. handshake.
- ss pin on micro has been connected pin 10 on wifi shield.
- i2c screen has been connected sda , scl pins, , works properly.

i loaded micro same program used on uno. changing board arduino micro. upload goes , lcd screen displays should do. @ point wifi shields connects wifi hangs , won't continue. after have tried example program check if wifi shield present can't find it. after searching have found solutions none work far. following have tried:
- updating wifi library latest version found on github
- connecting pin 3 , 7 on wifi shield
- wifi shield powered, if measure voltage between +5v , gnd measure +5v. 3.3v doesn't. not sure if needed board powered 5v.
- pressing reset button on wifi shield reset micro, connections valid
- have checked connections between micro , wifi shield, , connections seem good.

i attempting update firmware on wifi shield. hope fix problem having fear won't. i'll update once done.
if here has tried similar or had same issues happy hear of suggestions or solutions.

my own thoughts can try further are:
- connecting 3.3v micro wifi shield. according the board design cannot see connected won't know if work.
- connecting icsp connector pins 11(mosi), 12(miso), 13(sck) on wifi shield on uno
- connecting uno again see if wifi shield isn't broken

thank you,
mark

edit: updated firmware now, makes no difference sadly. linked 3.3v micro wifi shield didnt make difference.
edit 2: connected 3.3v micro 3.3v , ioref on wifi shield without success
edit 3: after more attempts figured after updated firmware forgot disconnect jumper , tried again 3.3v on ioref. @ first error led on wifi shield lit because wireless router wasn't accessible. once done got working  . still bit unstable detecting wifi shield after reset of board works.

this doesn't address question , may no @ all, there (quite small) arduino clones integral wifi adapters. reduce size (and cost) of installation , enable avoid sort of integration problem.

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