ST25R3911B SPI and ST25R3911B Discovery GUI has no commincatin

[DAbba]

Hi everybody 

I am using st25r3911 in my own pcb and I still have a problem in the first step :

rfalInitialize() does not return ERR_NONE

in fact I see the MOSI and CLK and CS signal but there is not anything in MISO !!

pin28 in st25r3911b (mcu_clk) is ok so i think the chip is working .

[DAbba]

I think I have a problem in Setting up yet .

I use ST25R3911B_DISCO_FW_v1_2_00 frimware as a sample code but my ST mcu is STM32F215 64PIN .

i am not sure even my spi setting is ok or not :

 hspi2.Instance = SPI2;

 hspi2.Init.Mode = SPI_MODE_MASTER;

 hspi2.Init.Direction = SPI_DIRECTION_2LINES;

 hspi2.Init.DataSize = SPI_DATASIZE_8BIT;

 hspi2.Init.CLKPolarity = SPI_POLARITY_LOW;

 hspi2.Init.CLKPhase = SPI_PHASE_2EDGE;

 hspi2.Init.NSS = SPI_NSS_SOFT;

 hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_128;

 hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB;

 hspi2.Init.TIMode = SPI_TIMODE_DISABLE;

 hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;

 hspi2.Init.CRCPolynomial = 7;

by the above spi setting i have signlas in mosi and sck pins .

but I am not sure they are ok .

is there anyone to help me in my step now?

[DAbba]

now I find out that /cs pin is connected to Gnd in my pcb and I can not find its point .

by the way be gnd for spi_cs is donot care and it has to work. am I right?

or I have to fixed it at first ?

[Travis Palmer]

Dear Dariush,

The !CS line is crucial for the SPI interface to work.

Please crosscheck the schematic shown in UM2042 page 11, 12 (Usermanual of the ST25R3911B-DISCO available on www.st.com) with your schematic.

The !CS line should be driven by the MCU and not tied to one potential.

BR Travis

[DAbba]

My problem solved and now I have a SPI communication by st25r3911b .

my new problems are :

1- External interrupt pin does not changed at all , I think when i close a mifare card in its antenna is should change , am I right ?

2- The ST25R3911B Discovery GUI program has no communication to it, I make a usb device for it and I am not sure in windows Device Manager what driver should add when ever I connect it to PC.

any help would be welcome

[Travis Palmer]

​Dear Dariush,

1.)

When enabeling the en and tx_en bit, do you see a signal on the RFO pins?

When sending a direct command D3 (measure amplitude) to the ST25R3911B, an interrupt will be generated by the ST25R3911B afterwards. If you do not see any interrupt, i would recommend to check the following items:

A.) Check resistance of IRQ line against VDD, VDD_IO, GND. (board disconnected, should be higher than 100k)

B.) Probe with a scope the IRQ line during sending a D3 command.

C.) Check voltage level of VDD_IO supply

D.) Probe with a scope, if the OSC is working propperly when bit "en" is set.

2.) When the ST25R3911B-DISCO board is connected you should be able to find a HID Device with HID\VID_0483&PID_3721&REV_0200&MI_00 .

The driver is delivered by Microsoft / Windows. No additional installation needed.

BR Travis

[DAbba]

Dear Travis,

thanks for your reply

during sending a direct command D3 I see an interrupt and it is OK , but is it possible to have an interrupt when ever I close a Mifare Tag to its antenna that now it dose not have an interrupt .

[Ulysses HERNIOSUS]

Hi Dariush,

not sure I understand what you actually do to get an interrupt from ST25R3911B. Without communicating to ST25R3911B it will not do anything autonomously. You do have here two options:

1. Normal operation mode: You enable oscillator, enable the field, and call proper methods (e.g. from our RFAL layer to send frames and receive response frames from the card - or
2. you configure the ST25R3911B in wake-up mode where it autonomously runs a low power cycle in which it sends out short field pulses and senses detuning of the antenna. Please refer to AN4985.

Regards, Ulysses

[DAbba]

Thank you

about ST25R3911B Discovery GUI program , now I have hid device in my control panel and I am sure that driver is OK .

but still I have no communication in usb :

 */
int main(void)
{
 /* USER CODE BEGIN 1 */
 
 /* USER CODE END 1 */
 
 /* MCU Configuration----------------------------------------------------------*/
 
 /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
 HAL_Init();
 
 /* USER CODE BEGIN Init */
 
 /* USER CODE END Init */
 
 /* Configure the system clock */
 SystemClock_Config();
 
 /* USER CODE BEGIN SysInit */
 
 /* USER CODE END SysInit */
 
 /* Initialize all configured peripherals */
 MX_GPIO_Init();
 MX_USART2_UART_Init();
 MX_USB_DEVICE_Init();
 MX_SPI2_Init();
 
 spiInit(&hspi2);
 /* USER CODE BEGIN 2 */
 logUsartInit(&huart2);
 logUsart("Welcome to DISCO-STM32L4x6\r\n");
 
 rfalAnalogConfigInitialize();
 logUsart("DARIUSH\r\n");
 if( rfalInitialize() == ERR_NONE )logUsart("rfalInitialize ok\r\n");
 
 else 	logUsart(" rfalInitialize error\r\n");
 /* USER CODE END 2 */
 StreamDispatcherInit();
 /* Infinite loop */
 /* USER CODE BEGIN WHILE */
 while (1)
 {
	 rfalWorker();
	 dispatcherInterruptHandler();
	 ProcessIO();
//aa++;
 
 /* USER CODE END WHILE */
 
 /* USER CODE BEGIN 3 */
 
 }
 /* USER CODE END 3 */
 
}
 
/**
 * @brief System Clock Configuration
 * @retval None
 */

[DAbba]

could you please simply help me about it ?

I am using stm32f4 discovery board and I made my own board in SPI connection to this board.

can I send commands to it directly and select an is1443a card (for example)?

I have also the same problem in ST25PC-NFC program

[Ulysses HERNIOSUS]

Hi Dariush,

The GUI uses USB VID and PID to identify the boards. Please carefully review the USB descriptors.

Ulysses

[DAbba]

Dear Ulysses

Thank you for your reply

Would you please tell me more about that ?

What I have to do in my own project ?