MicroPython Forum (Archive)

I'm writing my own module, which requires file operations. But when I write file * FP = fopen (file, "R") in the C code, the returned result is null, that is, the file does not exist. Is it because I don't have mount spiffs? But why can micropython itself read it? I use Python to execute OS Listdir ...

After recompiling microprython on esp32-s3, I can download it normally and run it normally. But there was an error when starting ESP-ROM:esp32s3-20210327 Build:Mar 27 2021 rst:0x1 (POWERON),boot:0x18 (SPI_FAST_FLASH_BOOT) SPIWP:0xee Octal Flash Mode Enabled For OPI Flash, Use Default Flash Boot Mode...