Open qq0901001 opened 3 years ago
It happens if the USB PPP interface try to input data to LWIP stack, but run out of RAM (network may works as normal, because the process will try until succeed). You can try to enable PSRAM to alleviate the problem.
Is adding external RAM chip for esp the only option?
@AD-Codex This is an equilibrium problem between consumers and producers. if data is generated faster than it is consumed, If it is a short period of large traffic impact, a larger storage area is needed to temporarily store the data.
Slow down the producers is another solution (eg. slow down the USB request), but the logic is more complicated
Problem Description
usb_cdc_4g_module Error log: pppos_input_tcpip failed with -1
Detailed log
1. When the code starts to run, the initialization is correct, and the wifi hot spot can be established normally
2. Open the browser or use bilibili to use the network, it will report the following error
3. Although the operation will report an error, the transparent transmission of the 'wifi' network of 'esp32s2' is still normal