connect ground and reset pins mega2560

Using Arduino IDE 1.x
1

hi everybody.

Can i connect the ground and reset pins of the 2560 , in order to bypass the processor ?

i need to use the arduino as usb interface for the xbee explorer regulated that does not come with usb socket ,(for setting of the xbee).
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i know and seen this done withw the uno.

2

Yes, you can connect Reset to Gnd and make all the IO pins become inputs to allow the 16U2 to talk to another device without the 2560 interfering.

3

thanks! :smiley:

4

hi.

i have connected ground to reset on arduino (hacked the mega 2560)

5v to 5v on xbee
gnd to gnd om xbee
Din xbee > rx0 on arduino
Dout xbee>tx0 on arduino

when i scan for the xbee on the xctu , it does not find the xbee.

arduino is found on com3 according to the xctu.

(the rx led on arduino blinks form time to time the tx is dead)

L is on all the time.

any idea what have i done wrong to try and program the xbee.

i am new to the whole matter.

thanks

Oded.

5

i have tried now talking to the xbee through setup(){begin serial 9600} , and tried sendin +++ through serial console , but appart from arduino rx led blinking , the xbee s2 is mute and unresponsive.

i have 2 items which i checked to verify its not a faulty unit,

as described i feed the xbee through regulated explorer , over mega 2560 gnd , 5V dout din ,

what can be wrong here ?

thanks

xctu on hacked mode does not find the xbee , tried swapping tx rx ports just for case also

6