When testing PNEV5190 with firmware in MCUXpresso IDE, flash download does not work.

[hangyoKim]

Hello, 

After completing the settings for external connection of PNEV5190, I was testing the PNEV5190 board connected to the MCXN947 board. During testing, at some point, an issue occurred where erase would not work during Flash download. So, I checked the hardware and the voltage is normal, but the clock is not coming out from the crystal in the PN5190 or K82F CPU. 

Also, when connecting the USB, it says "Connecting to boot loader" and then in the device manager, it keeps acting as if the CPU is being reset. For J-Link, it is properly caught in the device manager. Below is a picture of the LED status when connected to the USB of PNEV5190.

Could the above-mentioned situation be considered a failure of PNEV5190? Or should I consider it a K82F CPU failure?

Additionally, if there is a way to fix this, please let me know. 

Best regards,

[Daniel_Gutierrez]

Hello @hangyoKim, Good Day!

Thank you for your interest in our products.

I would like to ask if you could please provide more details about the process followed up to this point. Could you please specify what are the settings or modifications that you have made for connecting the PNEV5190 to an external host?

I would like to ask as well, what are you trying to achieve with your setup and how are you testing it?

Please confirm, what is the firmware you are trying to flash? On which IC are you trying to flash it? And what are the steps you have taken in order to do so? Are you using the MCUXpresso IDE?

When you say the clock is not coming out from the crystal, do you mean the SPI clock? If not, how are you testing this? Note that the SPI clock must be generated by the host MCU and not by the PN5190.

Please consider that connecting the PNEV5190 via USB using the j20 port is only necessary when using the OpenSDA interface to flash the onboard k82.

Consider as well that in order to connect an external host via the SPI interface some hardware modifications have to be made to the board, please refer to section 2 of the PN5190 EMV L1 SW porting to IMX1170 app note in which you will find related details that you can use as a starting point when using the MCXN947 host MCU.

My best regards,
Daniel