Hi,all
I need to connect BLE via NFC,but I do not know which example should i use to start。and i am a new field of NFC ,is there some document about NFC?thank you a lot !!
nRF5_SDK_17.1.0_ddde560
Hi,all
I need to connect BLE via NFC,but I do not know which example should i use to start。and i am a new field of NFC ,is there some document about NFC?thank you a lot !!
nRF5_SDK_17.1.0_ddde560
Hi!
thank you for you nice answer, i used this sample: nRF5_SDK_17.1.0_ddde560\examples\ble_peripheral\experimental\ble_app_hrs_nfc_pairing\pca10040.
Q1: it seems can bond between nrf52832 and smart phone ,but if i turn off the board,and turn on the board again ,it can not atuo conneted to the smart phone,is some config should i do? or the APP on smart phone should config something?
Q2:is there any function to test the antenna performance,output some value ,like RSSI? Aim to optimize the antenna for a better sensing distance
thank you a lot!!
thank you for you nice answer, i used this sample: nRF5_SDK_17.1.0_ddde560\examples\ble_peripheral\experimental\ble_app_hrs_nfc_pairing\pca10040.
Q1: it seems can bond between nrf52832 and smart phone ,but if i turn off the board,and turn on the board again ,it can not atuo conneted to the smart phone,is some config should i do? or the APP on smart phone should config something?
Q2:is there any function to test the antenna performance,output some value ,like RSSI? Aim to optimize the antenna for a better sensing distance
thank you a lot!!
ycp said:Q1: it seems can bond between nrf52832 and smart phone ,but if i turn off the board,and turn on the board again ,it can not atuo conneted to the smart phone,is some config should i do? or the APP on smart phone should config something?
If you have your own android app, then you have the autoConnect parameter in connectGatt() you can set to true
ycp said:Q2:is there any function to test the antenna performance,output some value ,like RSSI? Aim to optimize the antenna for a better sensing distance
It's already tuned on the DK. For custom nRF52 boards, see this white paper for NFC antenna tuning. https://infocenter.nordicsemi.com/topic/nwp_026/WP/nwp_026/nWP_026_intro.html
Thank you,it is vary useful !,
I have Q3:if the board boned with a phone ,next time this phone put on the board again ,will it pair again? i wish it can just connect ,do not pair ,what i should do?
i read the code below,it seems will generate new Authentication OOB Key again.thank you a lot!
/** * @brief Function for handling NFC events. * * @details Starts advertising and generates new OOB keys on the NFC_T2T_EVENT_FIELD_ON event. * * @param[in] p_context Context for callback execution, not used in this callback implementation. * @param[in] event Event generated by hal NFC lib. * @param[in] p_data Received/transmitted data or NULL, not used in this callback implementation. * @param[in] data_length Size of the received/transmitted packet, not used in this callback implementation. */ static void nfc_callback(void * p_context, nfc_t2t_event_t event, uint8_t const * p_data, size_t data_length) { UNUSED_PARAMETER(p_context); UNUSED_PARAMETER(p_data); UNUSED_PARAMETER(data_length); ret_code_t err_code = NRF_SUCCESS; nfc_pairing_mode_t pairing_mode; switch (event) { case NFC_T2T_EVENT_FIELD_ON: NRF_LOG_DEBUG("NFC_EVENT_FIELD_ON"); pairing_mode = nfc_ble_pair_mode_get(); if ((pairing_mode == NFC_PAIRING_MODE_OOB) || (pairing_mode == NFC_PAIRING_MODE_GENERIC_OOB)) { // Generate Authentication OOB Key and update NDEF message content. uint8_t length = random_vector_generate(m_oob_auth_key.tk, BLE_GAP_SEC_KEY_LEN); random_vector_log(length); err_code = nfc_tk_group_modifier_update(&m_oob_auth_key); APP_ERROR_CHECK(err_code); } // Start advertising when NFC field is sensed and there is a place for another connection. if (m_connections < NRF_SDH_BLE_PERIPHERAL_LINK_COUNT) { err_code = ble_advertising_start(m_p_advertising, BLE_ADV_MODE_FAST); if (err_code != NRF_ERROR_INVALID_STATE) { APP_ERROR_CHECK(err_code); } } break; case NFC_T2T_EVENT_FIELD_OFF: NRF_LOG_DEBUG("NFC_EVENT_FIELD_OFF"); break; default: break; } }
Q4:can I use S332 softdevice to run NFC ? Because the project need ANT+ feature too!
Hi!
ycp said:I have Q3:if the board boned with a phone ,next time this phone put on the board again ,will it pair again? i wish it can just connect ,do not pair ,what i should do?
You only need to bond once. If you turn off the board, and on again, and connect with the phone, you don't need to pair/bond again.
ycp said:can I use S332 softdevice to run NFC ?
Yes, that should work.
thank you very much! i got it!