i.MX RT Crossover MCUsのトピックRe: Troubleshooting MCUboot Utility Connection Failures

Troubleshooting MCUboot Utility Connection Failures

LHLL — Mon, 09 Mar 2026 07:51:44 GMT

mcubootutility connection failed. I connected the spi1_2second pins to the NOR flash (W25Q256). BT_CFG[7:0] = 4'b0000; BOOT0 = 1, BOOT1 = 0. mcupbootutility indicates it can connect to the flashloader but cannot connect to the external memory. Hardware and software configurations are as follows:

Re: Troubleshooting MCUboot Utility Connection Failures

mayliu1 — Mon, 09 Mar 2026 08:54:59 GMT

Hi @LHLL ,

Thank you so much for your interest in our products and for using our community.

please clarify the following information:

1: Which RT-series MCU are you using?
2: Are you working on your own custom board, or using an NXP evaluation board?
If it is a custom board, any basic hardware details would also be helpful.

Best Regards

MayLiu

Re: Troubleshooting MCUboot Utility Connection Failures

LHLL — Mon, 09 Mar 2026 09:38:23 GMT

It is a custom circuit board, with the MCU using the IMXRT1166XVM5A.

Re: Troubleshooting MCUboot Utility Connection Failures

mayliu1 — Tue, 10 Mar 2026 03:24:27 GMT

Hi @LHLL ,

In the figure from your previous post, I wasn’t able to locate the DQS pin. Could you point out its configuration or where it is mapped?

Best Regards

MayLiu

Re: Troubleshooting MCUboot Utility Connection Failures

LHLL — Thu, 12 Mar 2026 09:40:59 GMT

Hi MayLiu ,

I did not use the DQS pin because NOR flash does not require it. I Multiplex the DQS pin as an ETH_MDIO pin.Looking forward to your reply.

Best Regards

Re: Troubleshooting MCUboot Utility Connection Failures

mayliu1 — Tue, 17 Mar 2026 04:04:55 GMT

Hi @LHLL ,

Could you please try to set the DQS pin as floating and then test again?

Best Regards

MayLiu