AVR-Chat

Amir Hosseini wrote:

>--- In AVR-Chat@yahoogroups.com, BobGardner@... wrote:
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>>how to connect 2 AVR with out serial 
>>for Example :
>>PORTD of AVR1 ==  Sending data
>>PORTD of AVR2 == Resiving data   XXXXXX
>>===============================
>>8 bit parallel: Need to send on one port and receive on another,
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>also need  
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>>handshake lines
>>Or use SPI if distance is not too great
>>Or use 1 output and 1 input and 'bitbanging'... can be either full
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>duplex  or 
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>>half duplex
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>if for Max 4 cm distance i need a hardware for this ?
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yep.