frdm-kw40z component couldn't detect
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I change component MK20DX128VFM5 and kw40z from frdm-kw40z. and then my computer couldn't detect frdm-kw40z.
how can i do to solution this problem?
thanks
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Hi
First, why did you change the two MCUs? Was damaged? is there any other device damage?
The K20 has the Open SDA, did you load the firmware on it?
You need it to program the KW40
regards
Vicente Gomez
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i base on frdm-kw40z to design the board. i found out k20 no Oscillator and no usb_dp usb_dn when i connect computer by usb port.
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Sorry I did not understand
You create you own design based on the freedom?
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No, i would like to make board , just like frdm-kw40z + Charging circuit.
and then MK20DX128VFM5 can not work. so i check power is ok but Oscillator pin no work .
1.i would like to know how to programming MK20DX128VFM5 ?
2. New component (MK20DX128VFM5) could programming by usb port?
thanks for your help
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