second join always ends in rx 2 timeout about lorawan-library-for-pico HOT 5 OPEN

Thinking through the topic I guess I have found the right approach and understanding:
Joining the network has to be executed only once, like in step 2. After that the node has joined and does not need to join again.
With lorawan_is_joined() I can check if the node has joined.
With a slight modification of the example like the below, I can check if the node joined already and only if that is not the case execute the procedures to join.

    if (!lorawan_is_joined()) {

        // Start the join process and wait
        printf("Joining LoRaWAN network ...");
        lorawan_join();

        while (!lorawan_is_joined()) {
            lorawan_process_timeout_ms(1000);
            printf(".");
        }
        printf(" joined successfully!\n");
    }

from lorawan-library-for-pico.

Looks like that was not it. After batteries drained the behaviour returned.

from lorawan-library-for-pico.

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

from lorawan-library-for-pico.

Your problem seems to have to do with the duty cycle. I see you are using EU868 where duty cycle is restricted to 1% of total airtime. Try edit the folowing line in "src/lorawan.c" file by changing true to false then try again. :

`/*!
 * LoRaWAN ETSI duty cycle control enable/disable
 *
 * \remark Please note that ETSI mandates duty cycled transmissions. Use only for test purposes
 */
#define LORAWAN_DUTYCYCLE_ON                        true`

I encountered the same problem while testing my node and I wasn't patient enaugh between joins.

from lorawan-library-for-pico.