How to pass MAC ID to sd_ble_gap_conect

[Rekha]

Hi I have central device which has array of MAC address to connect.

when i see the structure of sd_ble_gap_connect() i cannot pass a uint8_t addr[5] as input.

so i tried as follows:

//declared a local variable of type GAP ADDRESS

ble_gap_addr_t const * paddr;

//copy address from local array "data[]" to "paddr->addr[]"

for (uint8_t i = 0;i< BLE_GAP_ADDR_LEN ;i++)
{
      memcpy((uint8_t *)&paddr->addr[i], &data[data_len+i], sizeof(data[i]));
}

but i am getting wrong values when i print paddr->addr.

// Establish connection.
err_code = sd_ble_gap_connect(p_addr,
&m_scan_param,
&m_connection_param,
APP_BLE_CONN_CFG_TAG);

only some bytes are correct remaining are wrong.

how to pass input parameter properly.???

Thanks

Rekha

[Andy]

Rekha said:

for (uint8_t i = 0;i< BLE_GAP_ADDR_LEN ;i++)
{
      memcpy((uint8_t *)&paddr->addr[i], &data[data_len+i], sizeof(data[i]));
}

This code is wrong. It should be

for (uint8_t i = 0; i < BLE_GAP_ADDR_LEN; i++) {
    paddr->addr[i] = data[i];
}

[Rekha]

HI  i tried as per your suggestion but i am getting error:

Error[Pe137]: expression must be a modifiable lvalue

thanks

[Andy]

That's because you're trying to modify a const.

Try this:

static ble_gap_addr_t address;
for (uint8_t i = 0; i < BLE_GAP_ADDR_LEN; i++) {
    address.addr[i] = data[i];
}

err_code = sd_ble_gap_connect(&address,
                              &m_scan_param,
                              &m_connection_param,
                              APP_BLE_CONN_CFG_TAG);

[Rekha]

Hi i resolved this before your reply...and thank you soo much even i modified it as below:

ble_gap_addr_t paddr; // previously it was a pointer i changed it.

thanks for your reply i crosschecked it with your answer.

Now it is working.

Thanks

Rekha