NFC中的主题 PN7462 updating EEPROM on linux

PN7462 updating EEPROM on linux

roque — Wed, 01 Nov 2017 19:07:16 GMT

Hi everyone,

I'm trying to update the PN7462 EEPROM by USB Mass Storage Mode on linux, but it is not working.

I'm using mount command to mount it as flash driver, erasing DRP_<nn>.dat file, loading my user_ee.bin file into it, umounting the partition and pressing RST_N button. After that I upload my application (on linux as well) and it's not working.

If I update the EEPROM using Windows it works, even loading my application on linux.

Re: PN7462 updating EEPROM on linux

jimmychan — Wed, 15 Nov 2017 04:14:12 GMT

Share the feedback from a customer who met the same issue on linux.

===============================================

The solution was change some configs in the computer, and use the “dd” cmd in the sector programmed instead of “cp” and “unmount” to copy files.

Following those steps:

1 – unload the module usb-storage, and cmd “modprobe usb-storage quirks=1fc9:0117:r,n,m”

2 – “dd if=pn/user_ee.bin of=/dev/sdc seek=03 (to copy the EEPROM)

There are several programmers with the same issue in the community, please, share with them

Re: PN7462 updating EEPROM on linux

thiago_machado — Thu, 25 Mar 2021 13:52:56 GMT

Hi Jimmy. In order to update the flash memory with a new firmware, what would be the steps to make so? I'm devoloping a SAM Card interface, that will be connected to a iMX8M Nano thru USB bus. It's firmware must be updated remotly, so in order to avoid devoloping a secondary bootloader, I'm trying to make it work using the primary. Is it possible? If so, I believe that the seek option must be different that the one you posted before. To develop the firmware, I'm using the MCUXpresso.

Re: PN7462 updating EEPROM on linux

thiago_machado — Mon, 29 Mar 2021 18:59:28 GMT

I was able to see the PN7412 as a mass storage device in UBUNTU 20. We are using a i.MX 8M Nano in our project, and the main goal is to update the PN7412 thru the i.MX USB bus. I couldn't manage to make it work on i.MX with the same steps listed here. I'm sending the dmesg output in the attachments. You guys have any idea what might be missing?

Re: PN7462 updating EEPROM on linux

CarlosFdez — Mon, 23 May 2022 09:40:37 GMT

Great!,

This solution worked for me. I'm using a LCP11U37F on Linux, my solution was change the seek==3 to seek==4.

– “dd if=pn/user_ee.bin of=/dev/sdc seek=04

Re: PN7462 updating EEPROM on linux

CharlieTech — Wed, 25 May 2022 14:59:39 GMT

Great!

This solution worked for me. I'm using a LPC11U37F on Linux, my solution was change the seek=3 to seek=4.

– “dd if=pn/user_ee.bin of=/dev/sdc seek=04