NHS31XX NFC programming

[martinbeisteine]

Hi!

I'm trying to flash an NHS3100 via NFC. When I use the "NHS31xx Downloader" app it works fine.

Now I would like to do the same with an NFC reader. For this purpose I have adapted the python script, otherwise it won't work with the current python version. The script is already running now, I can connect to the NHS and download the file. But I have the problem that there is something wrong with the CRC, the bootloader always returns an error code here.

I would need the data of the CRC algorithm which should be used, and if possible a bin-file with the CRC for checking my calculation. The file does not need to be a running firmware for the NHS, any file with dummy data would be sufficient.

Many thanks!

[mario_castaneda]

Hi Martin,

Is it possible that you could post your question in English for a better understanding of your issue? Also, could you please provide more details about the process that you are following.

Regards,

Mario 

[martinbeisteine]

Hi, here is my Question in English.

I'm trying to flash an NHS3100 via NFC. When I use the "NHS31xx Downloader" app it works fine.

Now I would like to do the same with an NFC reader. For this purpose I have adapted the python script, otherwise it won't work with the current python version. The script is already running now, I can connect to the NHS and download the file. But I have the problem that there is something wrong with the CRC, the bootloader always returns an error code here.

I would need the data of the CRC algorithm which should be used, and if possible a bin-file with the CRC for checking my calculation. The file does not need to be a running firmware for the NHS, any file with dummy data would be sufficient.

Many thanks!

[mario_castaneda]

Hi Martin,

What is the error code that you are getting?

However, please look at the python scripts that we provide, as part of the SDK.

"\release_mra2_12_3_nhs3100\tools\nfcLoader\pythonWindows\NFCprogramLoader.py"

This example could help you to how implement the CRC, It is using in case for a PC.

Please look at Chapter 2 One-time NFC program downloader Document UM11136

"NHS31xx\release_mra2_12_3_nhs3100\docs\UM11153.pdf"

Regards,

Mario