code for st25r200

[noamyuzukMSH]

Hi everyone,

I am working with the STEVAL-25R200SA evaluation board using the ST25R200 GUI software, and everything is functioning correctly.

However, I would like to develop my own software instead.

1. Using X-CUBE-NFC10 Middleware:

   • Can I use the X-CUBE-NFC10 middleware to read and write NFC tags with this board?
   • I attempted to generate the necessary files, but the generator is not working properly. Specifically, the file "nfc_conf.h" is not being generated as expected, causing errors.

2. Understanding the Existing Firmware:

   • I have access to the firmware code for the STEVAL-25R200SA, but it is quite complex.
   • I am unsure which parts of the code are essential and which can be ignored.
   • Could someone guide me on how to approach this or point me to relevant documentation?
   • i don't need to use uart for example.

Any help would be greatly appreciated!

Thanks!

[Ulysses HERNIOSUS]

Hi,

the easiest demos available are the ones in ST25 Embedded NFC lib. They include NDEF read/write, and many other demo applications. They are also  meant to be easily portable to non-STM32 MCUs.

Also X-CUBE-NFC10 should work. Not sure why that file would not be created. If you detail all the steps you are performing then maybe @Rene Lenerve could comment.

BR, Ulysses

[noamyuzukMSH]

hi,

I tried using the X-CUBE-NFC10 package ,

but the package doesn’t build the project well,

This is my steps:

1-Configuration hardware I took from steval-25r200sa :

2- Configure the x-cube-nfc10

3- Enable the nfc 10 :

4- Generate code :

5- Build :

6- Adding nfc_conf.h , I copy into nfc_conf.txt:

this is my steps, what did i do wrong ?

best regards, 

noam.

[Brian TIDAL]

Hi,

make sure to follow the various steps described in STMicroelectronics.X-CUBE-NFC10_GettingStarted.pdf (available in <yourHomeDir>\STM32Cube\Repository\Packs\STMicroelectronics\X-CUBE-NFC10\1.0.0\Documentation)

In particular:

and

Rgds

BT

[noamyuzukMSH]

Hi

Thanks BT for your reply,

so i created a new project .

i took the .ioc file from steval -25R200SA evaluation board FW.

i created the project from the nfc10 :

i defined all missing HW (button EXTI and LED)

generate the project:

download the project to the stm32 .

with debugging , i can see ,the stm32 cant identify the chip id of the st25r200.

on this function :

bool st25r200CheckChipID( uint8_t *rev )

{

uint8_t ID;

ID = 0;

st25r200ReadRegister( ST25R200_REG_IC_ID, &ID );

/* Check if IC Identity Register contains ST25R200's IC type code */

if( (ID & ST25R200_REG_IC_ID_ic_type_mask) != ST25R200_REG_IC_ID_ic_type_st25r200 )

{

return false;

}

if(rev != NULL)

{

*rev = (ID & ST25R200_REG_IC_ID_ic_rev_mask);

}

return true;

}

after st25r200ReadRegister( ST25R200_REG_IC_ID, &ID ); function the ID remain 0.

so i cant read the st25r200 id. why is that ?

after that ,the software got stuck  on  error handler on while(1)

void Error_Handler(void)

{

/* USER CODE BEGIN Error_Handler_Debug */

/* User can add his own implementation to report the HAL error return state */

__disable_irq();

while (1)

{

}

/* USER CODE END Error_Handler_Debug */

}

what the reason for that , the main issue is to understand why the st25r200 chip not recognize the id number.

again, this hardware is working fine, when use the STEVAL-25R200-STM32G0B1 FW.

best regards ,

noam.

[Brian TIDAL]

Hi,

check your SPI configuration and make sure the Reset pin of the ST25R200 is low. The st25r200CheckChipID fails due to no reply on the SPI (i.e. no reply ==> 0x00 is read on the MISO), so either the Reset pin is floating or the SPI configuration is incorrect.

BT

Rgds

[noamyuzukMSH]

Hi,

It’s working for me now.

I would like to know how to write data to a tag. Can you guide me on how to do that?

Is it possible to write to the tag using this library? I am using rewritable "A" type tags.

Best regards,

maybe one of the check box? 

Noam

[Ulysses HERNIOSUS]

Hi Noam,

our demos provide an application reading/writing NDEF in case the tag is properly formatted.

Otherwise you need to inspect the DS of the tag about the commands which need to be used.

Regards, Ulysses

[noamyuzukMSH]

hi,

Great, can you show me an example, how can I use the NDEF for writing?

br,

NOAM.

[Ulysses HERNIOSUS]

Hi Noam,

the aforementioned ST25 NFC lib (stsw-st25r-lib) contains an ndef_rw example.

BR, Ulysses