Alter lora frequency without reset

[robert-hh]

@momo232030 Are you sure that your code is complete? Besides the odd ubinascii.unhexlify('*'), which I expect that your code has the real values, I do not see where you try to set the frequency, besides in setRegion(). If you want to change the frequencies in the region, you may configure the channels. But a successful lora.join() may change that setting again.

[momo232030]

@robert-hh
Code crashes if i change the frequency and rerun the joinfrequency method. So the first time does work.

def setRegion(region):
    lora = LoRa(mode=LoRa.LORAWAN, region=region)
    return lora




def joinFreqency(freq, lora):
   dev_eui, app_eui, app_key = "","",""
   if freq == 433:
        dev_eui = ubinascii.unhexlify('*')
        app_eui = ubinascii.unhexlify('*')
        app_key = ubinascii.unhexlify('*')
   elif freq == 868:
              dev_eui = ubinascii.unhexlify('*')
              app_eui = ubinascii.unhexlify('*')
              app_key = ubinascii.unhexlify('*')
   elif freq == 915:
        dev_eui = ubinascii.unhexlify('*')        
        app_eui = ubinascii.unhexlify('*')
        app_key = ubinascii.unhexlify('*')   
   else:
        return

 #lopy does not respond anymore after next line
    lora.join(activation=LoRa.OTAA, auth=(dev_eui, app_eui, app_key), timeout=0)

...

[robert-hh]

@momo232030 can you post to he code that causes the crash?