Class B example- NucleoL073

[jariy]

Where could I find a Class B example? According to this link, there was a example, but I cannot find it.

[mluis1]

In recent versions of this project we decided to have a single example supporting all LoRaWAN classes.

The periodic-uplink-lpp example supports all 3 classes.

By default the provided example is setup to use ClassA.
In order to use ClassB one must modify the below line on main.c file.

LoRaMac-node/src/apps/LoRaMac/periodic-uplink-lpp/NucleoL073/main.c

Lines 48 to 51 in 9a6c7dc

	/*!
	* LoRaWAN default end-device class
	*/
	#define LORAWAN_DEFAULT_CLASS CLASS_A

Please change CLASS_A into CLASS_B

Something you also need to change is the uplink transmission periodicity in order to have the chance to open a few ping-slots in between uplinks.

LoRaMac-node/src/apps/LoRaMac/periodic-uplink-lpp/NucleoL073/main.c

Lines 53 to 62 in 9a6c7dc

	/*!
	* Defines the application data transmission duty cycle. 5s, value in [ms].
	*/
	#define APP_TX_DUTYCYCLE 5000
	/*!
	* Defines a random delay for application data transmission duty cycle. 1s,
	* value in [ms].
	*/
	#define APP_TX_DUTYCYCLE_RND 1000

As first test I would change the values to from 5000 and 1000 to 50000 and 10000 respectively.

The expected end-device behavior is as follows:

• Start as ClassA device
• Start acquiring the ClassB beacon
• Once beacon is acquired inform the network server about the wanted ping-slot periodicity.
• Once the network server answers to ping-slot periodicity MAC command the end-device is able to switch to ClassB
• From now on the network server will be able to schedule downlinks on ping-slots reception window.

[jariy]

Thanks, I changed it to 120000 and 10000 to test the beacon window expansions

[mluis1]

Nice. if you don't mind I mark this topic as answered.