Wire ACK FAULT

[sandeepc]

Hi,

when our team working project we faced Wire ACK fault.

While dumping code we are facing the Wire ACK fault. Some how we found the scenario to make to avoid the Wire ack Fault.

Working scenario:

1) power UP the board

2) Then connect the USB for Programming.

Fault Scenario:

A)

1) power UP the board

2) Then connect the USB for Programming.

in this scenario if i remove the USB cable first and then removing power supply, it leads to Wire ack fault after this when even i follow the working condition procedure. 

B) 

1) connect the USB for Programming.

2) power UP the board.

        above this also leads to wire ack fault.

There is only way to overcome is by using MCUxpresso secure provisioning tool to write new image. 

Any comments or suggestion please let mw know. 

@RT1170 @kerryzhou @nxp 

Regards,

Sandeep C

[sandeepc · Accepted solution]

As per the MCU link user manual we need to remove R16 if we are facing  wire ack issue.

Regards,

Sandeep C

[Pavel_Hernandez]

Hello, my name is Pavel, and I will be supporting your case, the scenario that you describe looks like a good behavior because the communication was lost through USB.

Is this scenario working in the past? 

Best regards,
Pavel

[sandeepc]

Hi

Thanks for the reply

Even now also it's working with the first scenario(working scenario).

We need eliminate the fault scenarios.

Our requirements which ever we connect first it should work, either we connect USB or power up the board.

@Pavel_Hernandez 

Regards,

Sandeep C

[Pavel_Hernandez]

Hello, in other words, are you using a custom board?

Best regards,
Pavel

[sandeepc]

Yes,.

We are using custom board

Regards 

Sandeep