Device address fro public device address format

[Jeffery]

Hi In current Desktop 2 project, We know that software device stack takes 48-bit random device address from FICR registers (DEVICEADDR[1: 0]) for BTLE. Each nRF51 has unigue address. We are planning to apply public device address (compny_assigned + company_id) from IEEE. How can we replace FICR device address by it in nRF51? Then, no side effect at all.

[Jeffery]

Hi, I have no idea how to attach the sorce file. The original project is Desktop 2 v1.0.4 mouse with sofware device v5.1.0. I only modified the below function for verifying. The hardware is nRFgo developement kit (nRF6310). JTAG lite programmer was connected to nRF51822 daughter board and then entered debug mode. Set breakpoint at _NOP.

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static void m_coms_btle_enable_post(void * p_event_data, uint16_t event_size) { uint32_t err_code; ble_gap_addr_t ble_addr;

*(uint32_t *)0x40000504 = 0xC007FFDF;
*(uint32_t *)0x40006C18 = 0x00008000;

err_code = ble_stack_init();
ASSERT(err_code == NRF_SUCCESS);   

// err_code = nrf_power_perpower_set(0x00000040);

err_code = gap_params_init();
ASSERT(err_code == NRF_SUCCESS);

err_code = advertising_init(BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE);
ASSERT(err_code == NRF_SUCCESS);

err_code = services_init();
ASSERT(err_code == NRF_SUCCESS);

err_code = conn_params_init();
ASSERT(err_code == NRF_SUCCESS);

sec_params_init();

err_code = advertising_start();
ASSERT(err_code == NRF_SUCCESS);

//@@@ ble_gap_addr_t same_addr; same_addr.addr[0] = 0x00; same_addr.addr[1] = 0x01; same_addr.addr[2] = 0x02; same_addr.addr[3] = 0x03; same_addr.addr[4] = 0x04; same_addr.addr[5] = 0x05;

	sd_ble_gap_address_set(&same_addr);  
err_code = sd_ble_gap_address_get(&ble_addr);   
ASSERT(err_code == NRF_SUCCESS);
	

//@@@ if((ble_addr.addr[0] ==0)&&(ble_addr.addr[1] ==1)&&(ble_addr.addr[2] ==2)&&(ble_addr.addr[3] ==3)&&(ble_addr.addr[4] ==4)&&(ble_addr.addr[5] ==5)){ __NOP(); }

// if (m_coms_btle_is_bond_stored() == false) // { // err_code = m_nfc_init(ble_addr.addr, // s_oob_key, // DEVICE_NAME, // sizeof(DEVICE_NAME), // BLE_APPEARANCE); // ASSERT(err_code == NRF_SUCCESS);
//
// m_nfc_enable(); // } }

[Ole Morten]

It also seems you don't check the error code on your address set. You should always check error codes when calling softdevice functions.

In your case, you most likely get an INVALID_PARAMS error back, both because you, as Carles says, haven't set the type, and also since you have a 0-byte in your address. This is as far as I remember not allowed.