frdm-kw40z component couldn't detect

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frdm-kw40z component couldn't detect

464 次查看
shinezen
Contributor III


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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293 次查看
vicentegomez
NXP TechSupport
NXP TechSupport

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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293 次查看
shinezen
Contributor III

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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293 次查看
vicentegomez
NXP TechSupport
NXP TechSupport

Sorry I did not understand

You create you own design based on the freedom?

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293 次查看
shinezen
Contributor III

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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293 次查看
vicentegomez
NXP TechSupport
NXP TechSupport

Hi

To program  the K20 you need a j-link or o SDA

Please check the KQRUG

Regards

Vicente Gomez

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