asset tracker v2 custom event

RE: asset tracker v2 custom event

justin — Tue, 29 Aug 2023 20:34:19 GMT

as you have noticed asset tracker v2 uses the bulk send option for nrf cloud data. this can be more efficient than sending the data in multiple messages.
if you want to implement sending a single message, you just need to implement cloud_wrap_data_send in nrf_cloud_integration.c.

int cloud_wrap_data_send(char *buf, size_t len, bool ack, uint32_t id,
			 const struct lwm2m_obj_path path_list[])
{
	ARG_UNUSED(path_list);

	int err;
	struct nrf_cloud_tx_data msg = {
		.data.ptr = buf,
		.data.len = len,
		.topic_type = NRF_CLOUD_TOPIC_MESSAGE,
		.id = id,
		.qos = ack ? MQTT_QOS_1_AT_LEAST_ONCE : MQTT_QOS_0_AT_MOST_ONCE,
	};

	err = nrf_cloud_send(&msg);
	if (err) {
		LOG_ERR("nrf_cloud_send failed, error: %d", err);
	}

	return err;
}

NOTE: nrf cloud expects the data to be in JSON format. so when calling cloud_wrap_data_send, the buf parameter should be a valid JSON string.
example:

#define HELLO_WORLD "{\"hello\" : \"world\"}"
int ret = cloud_wrap_data_send(HELLO_WORLD, strlen(HELLO_WORLD), true, 0, NULL);

RE: asset tracker v2 custom event

Hakon — Thu, 17 Aug 2023 11:11:15 GMT

Maybe cloud_wrap_batch_send() will work better.

RE: asset tracker v2 custom event

Muhammad Usman — Thu, 17 Aug 2023 10:56:06 GMT

means, the issue is at nrf cloud end? is there any alternate solution for this

[quote userid="101087" url="~/f/nordic-q-a/102890/asset-tracker-v2-custom-event/441822"]to send a "hello world" message to nrf cloud via asset tracker v2.[/quote]

Thanks

RE: asset tracker v2 custom event

Hakon — Thu, 17 Aug 2023 10:54:02 GMT

[quote user="Muhammad Usman"]but not able to see any data on nrf cloud .[/quote]

Yes, I said in most cases, but not if you are using nrf cloud unfortunately.

RE: asset tracker v2 custom event

Muhammad Usman — Thu, 17 Aug 2023 10:48:14 GMT

Hi Hakon

Thank you so much for the response!

I tried this one

cloud_wrap_data_send(char *buf, size_t len, bool ack, uint32_t id,const struct lwm2m_obj_path path_list[]);

as I am using ncs 2.4.0

but not able to see any data on nrf cloud .

Can you please help me to guide, me to send a "hello world" message to nrf cloud via asset tracker v2.

Thanks & regards,

Muhammad Usman

RE: asset tracker v2 custom event

Hakon — Thu, 17 Aug 2023 10:37:06 GMT

Hello,

have you tried sending the data using cloud_wrap_data_send()? That will work in most cases I believe.