GET PERIPHERAL DEVICES' MAC ADDRESS AND SEND THROUGH UART

RE: GET PERIPHERAL DEVICES' MAC ADDRESS AND SEND THROUGH UART

Vidar Berg — Fri, 29 Mar 2019 12:35:19 GMT

Hi,

Please try the attached example below. I made some small changes so that only devices with the NUS service are added to the device list. I hope this helps.

devzone.nordicsemi.com/.../ble_5F00_app_5F00_interactive.zip

RE: GET PERIPHERAL DEVICES' MAC ADDRESS AND SEND THROUGH UART

AnthonyThet — Mon, 25 Mar 2019 09:50:31 GMT

What I need is
1. scan the NUS peripherals and store all the scanned peripheral addresses.
2. when UART received "devices", it transmit all the scanned peripheral addresses.

3. when UART received "connect AA:BB:CC:DD:EE:FF", the central will connect to that particular peripheral.

But still I couldn't make it yet.

RE: GET PERIPHERAL DEVICES' MAC ADDRESS AND SEND THROUGH UART

AnthonyThet — Mon, 25 Mar 2019 08:55:23 GMT

Thanks Vidar, but I still stuck at this. I created a ble_m.c file as in the "ble_app_interactive" and I created a case in ble_evt_handler but I don't know how to get the data from ble_adv_report (I just checked if the uuid check is matched or not.).

static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
{
    ret_code_t            err_code;
    ble_gap_evt_t const * p_gap_evt = &p_ble_evt->evt.gap_evt;
		scan_evt_t						scan_evt;
		// I need to get data from ble adv report 
    switch (p_ble_evt->header.evt_id)
    {
				case BLE_GAP_EVT_ADV_REPORT:
						if(/*UUID_check match*//*scan_evt.params.filter_match.filter_match.uuid_filter_match == true*/)
						{
						    /* do the device to add list */
							NRF_LOG_DEBUG("BLE_GAP_EVT_ADV_REPORT\n");
							device_to_list_add(&p_gap_evt->params.adv_report);
							
						}
						
						break;
			
                case BLE_GAP_EVT_CONNECTED:
                        break;
    }
}

And to be honest, I also quite don't know how to proceed like where do I need to get scan NUS devices address (in ble_app_interactive, it uses m_device to display the scan devices list when you type in "Devices" , but I don't know how can I do?)

Sorry, I am just a newbie in BLE world especially Nordic, please help me and really thanks again and appreciate your help.

RE: GET PERIPHERAL DEVICES' MAC ADDRESS AND SEND THROUGH UART

Vidar Berg — Mon, 25 Mar 2019 07:44:37 GMT

Hi,

You typically parse the advertisement packet to determine if the advertisement packet belongs to a peripheral you want to connect to. Like in this case, you want to connect to peripherals including the NUS service UUID in the advertisement packet.

"use ble_adv_uuid_find() function to check the UUID of the NUS and then connected if it's match" Correct.

[quote user="AnthonyThet"]and do I still need to check for the service match check if the UUID is matched?[/quote]

It's optional to include service UUIDs in the advertisement packet (unless you're using a BT SIG defined service/profile that requires it). Normally you include a subset of the service UUIDs, enough to uniquely identify the type of peripheral. You will still have to do a service discovery after connection.

RE: GET PERIPHERAL DEVICES' MAC ADDRESS AND SEND THROUGH UART

AnthonyThet — Sun, 24 Mar 2019 02:42:36 GMT

Hi Vidar Berg, thanks so much for your answer. Please let me correct if I am wrong. In the central mode tutorial

use ble_adv_uuid_find() function to check the UUID of the NUS and then connected if it's match. Is that right? and do I still need to check for the service match check if the UUID is matched?

RE: GET PERIPHERAL DEVICES' MAC ADDRESS AND SEND THROUGH UART

Vidar Berg — Fri, 22 Mar 2019 08:44:18 GMT

Hi,

I think you can start by modifying the event handling for BLE_GAP_EVT_ADV_REPORT in ble_m.c so that only NUS peripherals are added to the device list (i.e., only call to device_to_list_add and address_to_cmd_add when a NUS peripheral is found). You can ble_app_uart_c as a reference on how you can filter NUS peripherals based on the NUS UUID. First, you need to add the base NUS UUID with sd_ble_uuid_vs_add() in your central code, then you can check for BLE_UUID_NUS_SERVICE match in the advertisement report.