Image Transfer Demo Gatt Client Data Readin

RE: Image Transfer Demo Gatt Client Data Readin

bsarica — Wed, 22 Feb 2023 06:54:59 GMT

I was writing log messages. I find another forum question about it and it says that it was given this error because of the bad pointer. I will try different technique and let you know,

Thank you in advance,

RE: Image Transfer Demo Gatt Client Data Readin

Edvin — Tue, 21 Feb 2023 14:17:09 GMT

Hello,

[quote user="bsarica"]For an additional information, I tried this kind of stuff without creating a client but I am getting the error I put below.[/quote]

How far does it get before it throws that error?

It looks like the application is trying to change the value of something it is not allowed to change.

What does the log say directly before it says "MPU FAULT"?

BR,

Edvin

RE: Image Transfer Demo Gatt Client Data Readin

bsarica — Tue, 21 Feb 2023 06:46:50 GMT

For an additional information, I tried this kind of stuff without creating a client but I am getting the error I put below.

static void discovery_complete(struct bt_gatt_dm *dm,
			       void *context)
{

	const struct bt_gatt_dm_attr *gatt_service_attr =
			bt_gatt_dm_service_get(dm);
	const struct bt_gatt_service_val *gatt_service =
			bt_gatt_dm_attr_service_val(gatt_service_attr);


	if(bt_uuid_cmp(gatt_service->uuid,APP_UUID))
		return;

	const struct bt_gatt_dm_attr *gatt_chrc;
	const struct bt_gatt_dm_attr *gatt_desc;

	int err;
	gatt_chrc = bt_gatt_dm_char_by_uuid(dm,CHAR_UUID);

	if(err){
		printk("Cannot Find\n");
	}	

	gatt_desc = bt_gatt_dm_desc_by_uuid(dm,gatt_chrc,APP_UUID);

	uuid_handle = gatt_desc->handle;

	gatt_desc = bt_gatt_dm_desc_by_uuid(dm, gatt_chrc, BT_UUID_GATT_CCC);

	ccc_handle = gatt_desc->handle;

	conn = bt_gatt_dm_conn_get(dm);

	printk("Connection");
	
	struct bt_gatt_subscribe_params *params = local_params;
	params->ccc_handle = ccc_handle;
	params->value = BT_GATT_CCC_NOTIFY;
	params->value_handle = uuid_handle;
	params->notify = char_read_cb;

	atomic_set_bit(params->flags, BT_GATT_SUBSCRIBE_FLAG_VOLATILE);

	bt_gatt_subscribe(conn,params);
}