[NFC] How to connect TRF7970A NFC device to any of the OMAP development platforms (like Beagleboard, OMAP3XX EVM, OMAP4 Panda board etc)?

Sreenath -

yes - if you have a look at the attached schematic, on the TRF7970A EVM, just like the TRF7960EVM, you can use header 5 to wire in your microprocessor for SPI or Parallel. Header 1 and Header 3 have the data clock and IRQ pins you also need to access and you would also need to wire in to the top of R24 for the EN line. Boards have been shipped to the eStore and should show up in stock in a few days at the latest. so you can go ahead and order.

https://estore.ti.com/TRF7970AEVM-TRF7970A-Evaluation-Module-P2586.aspx

1803.TRF797x_EVM_Rev A1_Schematic.pdf

Sreenath -

the voltage level on the I/O can be from 1.8 to 5V. Common use case for example is 3.3VDC and can be taken care of by connecting VDD_X (output) to VDD_I/O (input), and the output of VDD_X is programmable via Register 0x0B, and as VDD_I/O can be connected to external voltage level between 1.8 to 5VDC, this is also another way to handle the I/O voltage level setting. (this is identical to the way the TRF7960 and -60A are)

We have a team internal to TI who has developed the Linux driver using SPI interface. As they have just completed it, it is not quite ready for distribution, but we will make that available when it is ready.     

Josh,

Is there any way I can get a preliminary version of the driver for Linux.  I am trying to finish up hardware configuration requirements  using 7960 in Android Froyo.

Hello  Josh,

Do you have some news from this driver ?

I am interested to use this chip with an OMAP based board. This board will of course run Linux and I will be really happy to have your driver.

Thanks in advance

Patrick

Hi Josh,

Do we have a rough date that the driver will be ready? Besides Linux, will TI be releasing drivers that support WinCE6/7 and Android?

Regards,
Poh Leong

Poh -

The code should be available shortly for the new AM3715 flashboard. it is being finished right now and they are very close to being done. i will try to come back to you on this shortly with a link to that.

Josh Wyatt said:

Poh -

The code should be available shortly for the new AM3715 flashboard. it is being finished right now and they are very close to being done. i will try to come back to you on this shortly with a link to that.

Hi Josh:

Does the code work for TRF7960 as well? 

Thanks

Kevin

Any news on the TRF7970A Linux kernel driver? Looking in the mainline there is a driver for the NXP PN533 & PN544 under the NFC subsystem.

thanks,

Paul

I would also be very interested in getting access to such a driver. We are currently evaluating whether to use the TI or the NXP Chip and the only reason keeping us from going with TI at the moment is the lack of such a driver. 

I looked at the flashboard website but the currently release still says it does not support NFC yet. 

Even if the driver is not finished, I would be willing to use anything that is available as a starting point and provide improvements that we might make.

I would very much appreciate a response with more information on the availability of such a driver.

Thanks!

Robert:

Attached is a Linux driver for a TRF7070A device that used SPI to communicate with the ARM on the AM335x EVM.  This was used for a previous demo and is not productized code, but you can use for reference wrt using SPI for a different EVM with an ARM on-board.

Tim

5775.nfc_demo_am335x.tar.gz

Hi Tim,

sounds awesome. Unfortunately when I download the file it is corrupt. I tried downloading on different machines with different unpacking tools. None could read it. 

Can you upload it again or send it to me via email? Thank you!

Best regards,

Robert