Facing an issue while interfacing st nucleo expansion board NFC08A1 with another microcontroller

[YUE_NV]

你好

我正在使用 NFC08A1 Nucleo 扩展板。我正在尝试通过 SPI 将此板与另一个 renesas 微控制器连接。我已经通过 SPI 线、IRQ 和 GND、VCC 上的跳线连接了扩展板。

我正在将 RFAL 堆栈用于 3916B IC。

此时，程序初始化 （demoIni（）） 已经完成，进入 demoCycle（）;我发现 rfalSetAnalogConfig（（RFAL_ANALOG_CONFIG_POLL |

RFAL_ANALOG_CONFIG_TECH_NFCV |

RFAL_ANALOG_CONFIG_BITRATE_COMMON |

RFAL_ANALOG_CONFIG_RX） ）;gNfcDev_tate 应该从 RFAL_NFC_STATE_POLL_TECHDETECT 变为 RFAL_NFC_STATE_LISTEN_TECHDETECT，但它却变成了 RFAL_NFC_STATE_NOTINIT。您能否建议如何解决这个问题。

[Brian TIDAL]

Hi

welcome to this community. The language of this community is English (see Terms and conditions).

Would you please confirm that the above translation of your post is correct?

"

Hi

I am using NFC08A1 Nucleo expansion board. I am trying to connect this board with another renesas microcontroller via SPI. I have connected the expansion board via jumpers on SPI lines, IRQ and GND, VCC.

I am using RFAL stack for 3916B IC.

At this point, the program initialization (demoIni()) has been completed and entered demoCycle(); I found that rfalSetAnalogConfig((RFAL_ANALOG_CONFIG_POLL |

RFAL_ANALOG_CONFIG_TECH_NFCV |

RFAL_ANALOG_CONFIG_BITRATE_COMMON |

RFAL_ANALOG_CONFIG_RX));

gNfcDev.state should change from RFAL_NFC_STATE_POLL_TECHDETECT to RFAL_NFC_STATE_LISTEN_TECHDETECT, but it becomes RFAL_NFC_STATE_NOTINIT. Could you please suggest how to solve this problem.

"

Thanks in advance

Rgds

BT

[YUE_NV]

YUP

[Brian TIDAL · Accepted solution]

Hi,

gNfcDev.state is not supposed to return to RFAL_NFC_STATE_NOTINIT except during rfalNfcInitialize which is only called once inside demoIni.

I suspect that gNfcDev.state is getting corrupted. If you microcontroller supports watchpoint feature, I would suggest to set a write watchpoint on gNfcDev.state to try to find what is causing this.

Rgds

BT