I want to send larger UDP packets from nRF9160 (Thingy:91) using Serial LTE modem app.
I am not able to send more than 288 bytes of binary data.
How to send larger binary data by UDP in Serial LTE modem please ?
- Thingy:91 v1.0.0
- LTE modem app from ncs v1.4.0
- Modem firmware AT+CGMR mfw_nrf9160_1.2.2
- NB IoT Vodafone CZ, +CEREG: 5,"AE38","000AC51F",9,,,"00000000","00000111"
- +CGCONTRDP: 0,,"hardwario.com","","",,,,,,,1430
According https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.4.0/nrf/applications/serial_lte_modem/doc/TCPIP_AT_commands.html#udp-send-data-xsendto there is maximum size for NET_IPV4_MTU 576 bytes.
Where is this restriction from please ?
How it can be changed in Serial LTE modem app please ?
I am getting ERROR while using
AT#XSENDTO=<url>,<port>,0,"<HEX>..."
with more than 576 hex characters (288 binary data bytes payload in UDP packet).
How to fix that please ?
BTW there is error in documentation https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.4.0/nrf/applications/serial_lte_modem/doc/TCPIP_AT_commands.html#udp-send-data-xsendto either <datatype> optional or missing in example.
Thank you.
