LPC54606 is not able to connect using J-Link

[emb02]

Hi, 

I'm using LPC54606J512 with SWD interface but I'm not able to connect MCU using J-Flash. I'm getting error message as -

ERROR: Failed to connect.
Could not establish a connection to target.

I'm able to erase MCU and then download code using Flash magic through ISP mode. The MCU runs correctly, but not able to connect using J-Link.

Please help me with this.

[namht]

Hi,

Are you solved your issue?

[emb02]

Hi,

I am using MCUXPresso tool but still not able to debug.

[xiangjun_rong]

Hi,

Is it the first time you download application code after design? are you sure that the power supply pins are connected correctly? I suspect that the LPC54606 can not start-up because of hardware connection.

BR

Xiangjun Rong

[emb02]

Hi,

Is it the first time you download application code after design? 

-> I have tested this board multiple times before this problem arrived.

are you sure that the power supply pins are connected correctly? I suspect that the LPC54606 can not start-up because of hardware connection.

-> I have downloaded code using Flash magic and it is working fine.

-> I am able to send and receive data on UART terminal.

-> I am able to send and receive data on CAN channels.

That means my hardware setup is ok and it's working. I just can't debug my hardware with JTAG.

[xiangjun_rong]

Hi,

The LPC546xx supports only SDW instead of JTAG, pls confirm if you use SWD or JTAG port on your target board.

BR

XiangJun Rong

[emb02]

Hi,
Sorry I wanted to say J-Link.
I'm using SWD port only.

[emb02]

Hi,

I have checked with J-link commander but getting same result.

J-Link>connect
Device "LPC54606J512" selected.

Connecting to target via SWD
Cannot connect to target.

Can you tell me how to reset the device with J-link commander?

[xiangjun_rong]

Hi,

I suppose that you can reset the chip with J-Link command:

J-Link>reset

This is the J-Link command set, pls refer to it.

https://wiki.segger.com/J-Link_Commander

Hope it can help you

BR

XiangJun Rong

[emb02]

Hi,
J-Link>reset
->Connecting to target via SWD
->Cannot connect to target.
Still getting same error. What to do next?

[xiangjun_rong]

Hi,

Can you use J-LINK command to communicate with LPC54606? for example, specify the device, SWD port and reset the chip.

BR

XiangJun Rong

[xiangjun_rong]

Hi,

As a test, pls try to use MCUXPresso tools to build and debug the project, and check if the tools can identify the J-Link device and download code.

BR

XiangJun Rong