Sending I2C data over MQTT on nRF9160DK

RE: Sending I2C data over MQTT on nRF9160DK

Håkon Alseth — Tue, 16 Jun 2020 06:47:37 GMT

Glad to hear that you found a solution.

Kind regards,

Håkon

RE: Sending I2C data over MQTT on nRF9160DK

Jagruti — Mon, 15 Jun 2020 09:43:53 GMT

Hello,

I solved the issue.

I used mqtt_live() after the data_publish function. Now the loop does not stop after the interrupt.

RE: Sending I2C data over MQTT on nRF9160DK

Jagruti — Fri, 12 Jun 2020 14:17:21 GMT

Hi,

Yes, I am using one function out of the two ("pub_icm_mqtt" or "data_publish(&client, MQTT_QOS_1_AT_LEAST_ONCE, ICM, strlen(ICM));") at a time. I did it for testing.

Yes the array is zero terminated. I checked the return code from data_publish(), it is working properly. It does not return error.

But I tried few things and observed this:

1. I disabled UART and sent the I2C data to the cloud and sending the SMS on button press. This program worked properly. Even after the button press, the I2C data was on the cloud. The while(connected) loop did not stop.

2. Now in the above program I enabled UART and sent both the data (UART and I2C) to the cloud. This program worked properly until the button press like the original problem. On button press, while(connected) loop stopped, but the UART data was still on the cloud. I am using one LED inside while(connected) loop to check. It also stops.

It means that the problem occurs when I use both the peripherals with button. One peripheral with button works without any problem.

How can I solve this problem, I am not understanding.

RE: Sending I2C data over MQTT on nRF9160DK

Håkon Alseth — Fri, 12 Jun 2020 12:37:48 GMT

Hi,

[quote user=""]But If I don't publish the I2C data, the while(connected) loop continues to work on the button press also.[/quote]

Are you pushing data both to the work queue function "pub_icm_mqtt" and "data_publish(&client, MQTT_QOS_1_AT_LEAST_ONCE, ICM, strlen(ICM));", or is this an experiment to choose one of these? If both are called, one will overwrite the other.

strlen() assumes that "\0" is found in the input array. Is the array zero-terminated? Could you also check the return code from data_publish() to see if there's anything that goes wrong?

Kind regards,

Håkon