Hi all!
I am working in a BLE scanner but I have enabled the filter by MAC ADDRESS. I can filter beacons that are produced based in NRF52 and NRF51. But when i try set a MAC ADDRESS of a SOC produced by other company the filter no match.
wich could be the problem?
I store the MAC ADDRESS in array of char, I put them in reverse (LSB --> MSB) attach an example:
char target_device[][6] = {
{0x96, 0xEA, 0x57, 0x6E, 0x91, 0xDF},
{0x13, 0x48, 0x35, 0x79, 0xBE, 0xEB},
{0x68, 0xDA, 0xFC, 0x71, 0x77, 0x60},
{0xBF, 0x92, 0xD9, 0x70, 0xAF, 0xFD},
{0x8C, 0x4B, 0x7A, 0xD6, 0xAB, 0xFE},
{0x0E, 0x2B, 0xE6, 0x5A, 0xA8, 0xE7},
{0xC3, 0x6B, 0xD2, 0x56, 0x79, 0xEB}
};
I have try put the MAC ADDRESS in the normal form (MSB--->LSB), but it does not work.
For set the filter I use the following code:
//Setting filters for scanning.
int rows = sizeof (target_device) / 6;
for (int t=0 ; t<rows; t++)
{
char td[] = { target_device[t][0],target_device[t][1] ,target_device[t][2] ,target_device[t][3] ,target_device[t][4] ,target_device[t][5]};
err_code = nrf_ble_scan_filter_set(&m_scan, SCAN_ADDR_FILTER, td);
APP_ERROR_CHECK(err_code);
}
err_code = nrf_ble_scan_filters_enable(&m_scan, NRF_BLE_SCAN_ADDR_FILTER, false);
APP_ERROR_CHECK(err_code);
I attach the devices that I want to scan:
I have done, I modified the scan_init and scan_evt_handler and scan the beacon 2 and beacon 3:
scan_init:
static void scan_init(void)
{
ret_code_t err_code;
nrf_ble_scan_init_t init_scan;
memset(&init_scan, 0, sizeof(init_scan));
init_scan.connect_if_match = false;
init_scan.conn_cfg_tag = APP_BLE_CONN_CFG_TAG;
init_scan.p_scan_param = &m_scan_param;
err_code = nrf_ble_scan_init(&m_scan, &init_scan, scan_evt_handler);
APP_ERROR_CHECK(err_code);
}
scan_evt_handler:
static void scan_evt_handler(scan_evt_t const * p_scan_evt)
{
ret_code_t err_code;
char data_hex[10];
char len[10];
switch(p_scan_evt->scan_evt_id)
{
case NRF_BLE_SCAN_EVT_NOT_FOUND: //FOB filter, it is filtered by the company ID
unsigned char* addr = p_scan_evt->params.p_not_found->peer_addr.addr;
uart_putstring("ADDR:");
for (int a=5; a>=0; a--)
{
sprintf(data_hex,"%02x", addr[a] );
uart_putstring(data_hex);
}
uart_putstring("\r\n");
break;
case NRF_BLE_SCAN_EVT_FILTER_MATCH:
break;
default:
break;
}
}
and the result is the next:
The NRF52 is able to see both beacons, but the problem is in NRF_BLE_SCAN_EVT_FILTER_MATCH, for some reason the Beacon 3 does not trigger the scan event. 