Time-Project

I’m working on a project that needs both camera capture (V4L2) and network upload over PPP (LWIP + esp_http_client) on ESP32-S3.

Individually, both parts work perfectly:

Camera module (based on ESP-Video + V4L2): Captures a JPEG → saves to SD card

PPPOS client: Reads images from SD → uploads to HTTPS server

But when I try to merge them into the same main.c, I get this during compilation:

warning: "_IO" redefined warning: "_IOR" redefined warning: "_IOW" redefined

As soon as they appear in the same .c file, V4L2 ioctl codes get corrupted → Camera fails to initialize → SD card initialization freezes → entire pipeline breaks.

Has anyone faced rhe same issue before?

I have no idea how d

I’m working on a project that needs both camera capture (V4L2) and network upload over PPP (LWIP + esp_http_client) on ESP32-S3.

Individually, both parts work perfectly:

Camera module (based on ESP-Video + V4L2): Captures a JPEG → saves to SD card

PPPOS client: Reads images from SD → uploads to HTTPS server

But when I try to merge them into the same main.c, I get this during compilation:

warning: "_IO" redefined warning: "_IOR" redefined warning: "_IOW" redefined

As soon as they appear in the same .c file, V4L2 ioctl codes get corrupted → Camera fails to initialize → SD card initialization freezes → entire pipeline breaks.

Has anyone faced rhe same issue before?

I have no idea how d

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