本教程基于nRF51_SDK_10.0.0_dc26b5e\examples\ble_peripheral\ble_app_uart工程

本教程主要是演示

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現在演示通過nus來修改ADV中maufacturer data,在disconnect后我們可以看到廣播中maufacturer data更新為我們在nus中配置的

在工程增加新代碼

#define APP_COMPANY_IDENTIFIER 0x0059 /**< Company identifier for Nordic Semiconductor ASA. as per www.bluetooth.org. */#define DEFAULT_ADVDATA "libra" #define ADVDATA_BUFFER_SIZE 24// advertisement data string static uint8_t advert_str[ADVDATA_BUFFER_SIZE] = DEFAULT_ADVDATA; static uint16_t adv_str_len = 5;static volatile bool update_request = false;// configure advertisements void adverts_init(void) {uint32_t err_code;ble_advdata_t advdata;ble_advdata_t scanrsp;ble_advdata_manuf_data_t manuf_data;memset(&advdata, 0, sizeof(advdata));memset(&scanrsp, 0, sizeof(scanrsp));manuf_data.company_identifier = APP_COMPANY_IDENTIFIER;manuf_data.data.p_data = advert_str;manuf_data.data.size = adv_str_len;advdata.name_type = BLE_ADVDATA_FULL_NAME;advdata.include_appearance = false;advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE;advdata.p_manuf_specific_data = &manuf_data;err_code = ble_advdata_set(&advdata,NULL);APP_ERROR_CHECK(err_code); }// start advertising void adverts_start(void) {uint32_t err_code;ble_gap_adv_params_t adv_params;memset(&adv_params, 0, sizeof(adv_params)); //設置廣播信道是否開啟adv_params.channel_mask.ch_37_off = 0;adv_params.channel_mask.ch_38_off = 0;adv_params.channel_mask.ch_39_off = 0;adv_params.type = BLE_GAP_ADV_TYPE_ADV_IND;adv_params.p_peer_addr = NULL;adv_params.fp = BLE_GAP_ADV_FP_ANY;adv_params.interval = APP_ADV_INTERVAL;adv_params.timeout = APP_ADV_TIMEOUT_IN_SECONDS;adv_params.p_whitelist = NULL;err_code = sd_ble_gap_adv_start(&adv_params);APP_ERROR_CHECK(err_code); }// check connection state bool is_connected(void) {return (m_conn_handle != BLE_CONN_HANDLE_INVALID); }// update advertised data void adverts_update(uint8_t * adv_str, uint16_t len) {if (len > ADVDATA_BUFFER_SIZE) len = ADVDATA_BUFFER_SIZE;memcpy(advert_str, adv_str, len);adv_str_len = len;update_request = true; }void adverts_update_check(void) {if((update_request)&&(!is_connected())){update_request = false;sd_ble_gap_adv_stop();adverts_init(); adverts_start();} }

修改工程原來的代碼

static void nus_data_handler(ble_nus_t * p_nus, uint8_t * p_data, uint16_t length) {for (uint32_t i = 0; i < length; i++){while(app_uart_put(p_data[i]) != NRF_SUCCESS);}while(app_uart_put('\n') != NRF_SUCCESS);adverts_update(p_data,length);}

static void on_ble_evt(ble_evt_t * p_ble_evt) { ...case BLE_GAP_EVT_DISCONNECTED:err_code = bsp_indication_set(BSP_INDICATE_IDLE);APP_ERROR_CHECK(err_code);m_conn_handle = BLE_CONN_HANDLE_INVALID;//adverts_update_check();/break; ... }

/**@brief Application main function.*/ int main(void) {uint32_t err_code;bool erase_bonds;uint8_t start_string[] = START_STRING;// Initialize.APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_MAX_TIMERS, APP_TIMER_OP_QUEUE_SIZE, false);uart_init();buttons_leds_init(&erase_bonds);ble_stack_init();gap_params_init();services_init();// advertising_init();adverts_init();conn_params_init();printf("%s",start_string);// err_code = ble_advertising_start(BLE_ADV_MODE_FAST);// APP_ERROR_CHECK(err_code);adverts_start();// Enter main loop.for (;;){power_manage();} }

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