Check notification status / toggle notification status Mutilink Central Example

RE: Check notification status / toggle notification status Mutilink Central Example

muhkuhns — Tue, 19 May 2015 06:57:38 GMT

It basically works fine as far as I have just tried with one peripheral. But I would like to add a "Notif. enabled/disabled" printf command.. The problem is, that after the printf(Notf disabled) always one more measurement comes in. So I guess I would need to send that message after the notification disabled ack came in.

RE: Check notification status / toggle notification status Mutilink Central Example

Chaiwat Sungkhobol — Mon, 18 May 2015 18:32:25 GMT

Looks good. I am not sure about the message that has to be sent out. check if the data in the buffer to send out is correct.

RE: Check notification status / toggle notification status Mutilink Central Example

muhkuhns — Sat, 16 May 2015 10:06:22 GMT

Thank you very much! This was way more than needed but it will help me a lot! I don't have my DK at home at the moment so testing will take till Monday. But I am 100% sure that it won't be a big problem any longer!

Something like this should do I guess:

void toggle_notif(bool toggle_bool)
{
		client_t *p_client;
		ble_gattc_write_params_t write_params;
    uint8_t                  buf[2];

	for(int i=0; i<m_client_count; i++)
	{
		p_client = &m_client[i];
    p_client->state = STATE_NOTIF_ENABLE;

    buf[0] = toggle_bool;
    buf[1] = 0;

    write_params.write_op = BLE_GATT_OP_WRITE_REQ;
    write_params.handle   = p_client->srv_db.services[0].charateristics[p_client->char_index].cccd_handle;
    write_params.offset   = 0;
    write_params.len      = sizeof(buf);
    write_params.p_value  = buf;

    sd_ble_gattc_write(p_client->srv_db.conn_handle, &write_params);
	}
}

I am only wondering about what to do with the clients state..

RE: Check notification status / toggle notification status Mutilink Central Example

Chaiwat Sungkhobol — Sat, 16 May 2015 09:06:45 GMT

What u need to do is create the function that you need to call to disable the notification in the c file and then put the function prototype into the h file. The main.c should already have the h file included already. In your function u would just call it with a void argument since u are going to go through all the connected device. U might want to have it return the status. Your function will be in the client_handle.c and it should use m_client variable. Since the p_client you are trying to use is not in the scope of your new function you would have to declare it in the new function. It would be something like.

uint32_t client_handle_set_all_notification(bool arg)
{
Uint32_t err_code = NRF _SUCCESS;
  client_t *p_client;
  for(int i =0; i<m_client_count; i++)
  {
If(arg = 0) 
{ 
err_code = notif_disabled(p_client);
}
else
{
err_code = notif_enable(p_client);
}
If(err_code != NRF_Success) break;
}
return err_code;
}

You will have to do your own disabling function. Should be the same as notif_enable but different parameter. You would be the function prototype in the h file and call the function with argument 0 to turn off notification and other to enable all notification. I am not at a computer and typing this from my phone. So might not be correct. But it should be something along this line. Hope it help.

RE: Check notification status / toggle notification status Mutilink Central Example

muhkuhns — Sat, 16 May 2015 08:24:35 GMT

Thank you very much for your answer! But my main problem is much more basic.

I can't figure out how do declare a function in client_handling.c so that I can call it from main.c

I somewhat need to declare it in client_handling.h too? But inside this file I get the error client_t unkown type

the other way I would need to get p_client known in main.c

RE: Check notification status / toggle notification status Mutilink Central Example

Chaiwat Sungkhobol — Fri, 15 May 2015 19:29:26 GMT

It seem you are on the right path. I have not implement the code but I have briefly looked at it. This is how i would do it.

Create a function in client_handling.c to start disabling notification.(client_handling_disable_all_notification()) in that you would run a loop on m_client with max value of m_client_count. And set disable notification function.

Then you would call the new function when a button is press.

Hope that help.