nrf9160 MQTT sample problem

RE: nrf9160 MQTT sample problem

MiroslavP — Tue, 04 Jun 2019 12:34:36 GMT

It looks like an code optimization error. I must to add a print NAME and PASS to the console, and then it works. Thank you. Please close ticket.

static void client_init(struct mqtt_client *client)
{
	mqtt_client_init(client);

	broker_init();

	/* MQTT client configuration */
	client->broker = &broker;
	client->evt_cb = mqtt_evt_handler;
	client->client_id.utf8 = (u8_t *)CONFIG_MQTT_CLIENT_ID;
	client->client_id.size = strlen(CONFIG_MQTT_CLIENT_ID);
	//client->password = NULL;
	//client->user_name = NULL;

        struct mqtt_utf8 pass,name;
        pass.size = (u32_t) strlen("PASS");
        pass.utf8 =(u8_t*)"PASS";
        printk("pass: %d,%s\n",pass.size,pass.utf8);
        name.size = (u32_t) strlen("NAME");
        name.utf8 = (u8_t*)"NAME";
        printk("name: %d,%s\n",name.size,name.utf8);

        client->password = &pass;
        client->user_name = &name;
	client->protocol_version = MQTT_VERSION_3_1_1;

	/* MQTT buffers configuration */
	client->rx_buf = rx_buffer;
	client->rx_buf_size = sizeof(rx_buffer);
	client->tx_buf = tx_buffer;
	client->tx_buf_size = sizeof(tx_buffer);

	/* MQTT transport configuration */
	client->transport.type = MQTT_TRANSPORT_NON_SECURE;
}

RE: nrf9160 MQTT sample problem

MiroslavP — Mon, 03 Jun 2019 11:39:08 GMT

Bug is maybe on the line with HOSTNAME.

If I use hostname

#define CONFIG_MQTT_BROKER_HOSTNAME "iot.eclipse.org"

Then on the console is output

ERROR: getaddrinfo failed 22
ERROR: mqtt_connect -47

And error 22 is for Invaid argument ?

But if I use IP address on the this format

#define CONFIG_MQTT_BROKER_HOSTNAME "198.41.30.241"

Then I have on the console this

***** Booting Zephyr OS v1.14.99-ncs1 *****
The MQTT simple sample started
LTE Link Connecting ...
LTE Link Connected!
IPv4 Address found 0xf11e29c6
Exception occurred in Secure State
***** HARD FAULT *****
  Fault escalation (see below)
***** BUS FAULT *****
  Precise data bus error
  BFAR Address: 0x50008120
***** Hardware exception *****
Current thread ID = 0x20020284
Faulting instruction address = 0x1b8c0
Fatal fault in ISR! Spinning...

But why ? What I'm doing wrong ?

RE: nrf9160 MQTT sample problem

MiroslavP — Mon, 03 Jun 2019 11:23:37 GMT

Yes, I have question. He stopped working for me mqtt_siple example. I do not know why, but I've tried everything.

I only changed

#define CONFIG_MQTT_BROKER_HOSTNAME "18.194.228.78"
#define CONFIG_MQTT_BROKER_PORT 1883
//#define CONFIG_LTE_NETWORK_MODE_LTE_M 1
#define CONFIG_LTE_NETWORK_MODE_NBIOT 1

And after rebuild and flashing, I have this output on the console

I do not know why. I reverted from git all source code, and change only this 4 line on the file autoconf.h. AT_client example is working. But mqtt_simple have this output.

Please what is bad ?

RE: nrf9160 MQTT sample problem

Håkon Alseth — Mon, 03 Jun 2019 07:29:42 GMT

Great to hear that you found the solution 🙂

Let me know if any other issues/questions should pop up.

Cheers,

Håkon

RE: nrf9160 MQTT sample problem

MiroslavP — Mon, 03 Jun 2019 07:24:09 GMT

Yes this morning I found out. Well thank you.

But password, and user_name is pointer to struct. I used this solution

struct mqtt_utf8 pass,name;

pass.size = strlen("PASS");
pass.utf8 = (u8_t*)"PASS"
name.size = strlen("NAME");
name.utf8 = (u8_t *)"NAME";

client->password = &pass;
client->user_name = &name;

Thank you.

RE: nrf9160 MQTT sample problem

Håkon Alseth — Mon, 03 Jun 2019 06:45:19 GMT

Hi,

[quote user=""]Error 61 is for Connection refused, right ?[/quote]

For the inbuilt minimal libc in zephyr, that is correct (if you choose to use newlib-nano, errno.h will be different). Here from errno.h:

#define ECONNREFUSED 61 /* Connection refused */

For the .password and .user_name, these are both of struct mqtt_utf8, so you'll have to populate both the string and the size of the string:

client->password.utf8 = (u8_t*)MY_PWD;
client->password.size = strlen(MY_PWD);
client->user_name.utf8 = (u8_t*)USER;
client->user_name.size = strlen(USER);

Could you check if this helps?

Kind regards,

Håkon

RE: nrf9160 MQTT sample problem

MiroslavP — Fri, 31 May 2019 13:45:39 GMT

Sorry, here's the complete log