Please help me modify this serial routine to resolve the problem of unstable data sending and receiving.

[peter.min]

Use this routine to send and receive data from 4 different serials, receive and send data loss, please help me modify this sample bug.

sdk ncs v1.3
Path:D:\ncs\v1.3.0\nrf\samples\nrf9160\spm\prj.conf
Filename:prj.conf
Modify:CONFIG_SERIAL=n

Path:D:\ncs\v1.3.0\zephyr\boards\arm\nrf9160dk_nrf9160\nrf9160dk_nrf9160_common.dts
Filename:nrf9160dk_nrf9160_common.dts
Modify:Replace this dts file with the provided sample dtc file.    nrf9160dk_nrf9160_common.dts

Path:D:\ncs\v1.3.0\nrf\applications\21_uart_x4
Storage example:21_uart_x4

0160.4uart_example.rar

[Hakon]

Hello,

can you describe the problem you're experiencing? What do you mean by unstable data sending and receiving?