[PSOC™] 【CY8CKIT-062S2-AI 测评】--WIFI扫描

void scan_task(void *arg)

{

    cy_wcm_scan_filter_t scan_filter;

    cy_rslt_t result = CY_RSLT_SUCCESS;

    cy_wcm_config_t wcm_config = { .interface = CY_WCM_INTERFACE_TYPE_STA };

    cy_wcm_mac_t scan_for_mac_value = {SCAN_FOR_MAC_ADDRESS};



    memset(&scan_filter, 0, sizeof(cy_wcm_scan_filter_t));

    result = cy_wcm_init(&wcm_config);

    error_handler(result, "Failed to initialize Wi-Fi Connection Manager.\n");



    while (true)

    {

        /* Select the type of filter to use.*/

        switch (scan_filter_mode_select)

        {

            case SCAN_FILTER_NONE:

                APP_INFO(("Scanning without any filter\n"));

                break;



            case SCAN_FILTER_SSID:

                APP_INFO(("Scanning for %s.\n", SCAN_FOR_SSID_VALUE));



                /* Configure the scan filter for SSID specified by

                 * SCAN_FOR_SSID_VALUE.

                 */

                scan_filter.mode = CY_WCM_SCAN_FILTER_TYPE_SSID;

                memcpy(scan_filter.param.SSID, SCAN_FOR_SSID_VALUE, sizeof(SCAN_FOR_SSID_VALUE));

                break;



            case SCAN_FILTER_RSSI:

                APP_INFO(("Scanning for RSSI > %d dBm.\n", SCAN_FOR_RSSI_VALUE));



                /* Configure the scan filter for RSSI range specified by

                 * SCAN_FOR_RSSI_VALUE.

                 */

                scan_filter.mode = CY_WCM_SCAN_FILTER_TYPE_RSSI;

                scan_filter.param.rssi_range = SCAN_FOR_RSSI_VALUE;

                break;



            case SCAN_FILTER_MAC:

                APP_INFO(("Scanning for %02X:%02X:%02X:%02X:%02X:%02X.\n", scan_for_mac_value[0], scan_for_mac_value[1], scan_for_mac_value[2], scan_for_mac_value[3], scan_for_mac_value[4], scan_for_mac_value[5]));



                /* Configure the scan filter for MAC specified by scan_for_mac_value

                 */

                scan_filter.mode = CY_WCM_SCAN_FILTER_TYPE_MAC;

                memcpy(scan_filter.param.BSSID, &scan_for_mac_value, sizeof(scan_for_mac_value));

                break;



            case SCAN_FILTER_BAND:

                APP_INFO(("Scanning in %s band.\n", band_string[SCAN_FOR_BAND_VALUE]));



                /* Configure the scan filter for band specified by

                 * SCAN_FOR_BAND_VALUE.

                 */

                scan_filter.mode = CY_WCM_SCAN_FILTER_TYPE_BAND;

                scan_filter.param.band = SCAN_FOR_BAND_VALUE;

                break;



            default:

                break;

        }



        PRINT_SCAN_TEMPLATE();



        if(SCAN_FILTER_NONE == scan_filter_mode_select)

        {

            result = cy_wcm_start_scan(scan_callback, NULL, NULL);

        }

        else

        {

            result = cy_wcm_start_scan(scan_callback, NULL, &scan_filter);

        }



        /* Wait for scan completion if scan was started successfully. The API

         * cy_wcm_start_scan doesn't wait for scan completion. If it is called

         * again when the scan hasn't completed, the API returns

         * CY_WCM_RESULT_SCAN_IN_PROGRESS.

         */

        if (CY_RSLT_SUCCESS == result)

        {

            xTaskNotifyWait(0, 0, NULL, portMAX_DELAY);

        }



        /* Define PRINT_HEAP_USAGE using DEFINES variable in the Makefile. */

        print_heap_usage("After scan results are printed to UART");



        vTaskDelay(pdMS_TO_TICKS(SCAN_DELAY_MS));

    }

}

static void scan_callback(cy_wcm_scan_result_t *result_ptr, void *user_data, cy_wcm_scan_status_t status)

{

    if ((strlen((const char *)result_ptr->SSID) != 0) && (status == CY_WCM_SCAN_INCOMPLETE))

    {

        num_scan_result++;

        print_scan_result(result_ptr);

    }



    if ( (CY_WCM_SCAN_COMPLETE == status) )

    {

        /* Reset the number of scan results to 0 for the next scan.*/

        num_scan_result = 0;



        /* Notify that scan has completed.*/

        xTaskNotify(scan_task_handle, 0, eNoAction);

    }

}