missing avrdude upload protocol for Generic AT89S52

[OliverRhyme]

When trying to build it says "Warning! Unknown upload protocol avrdude"

[preetamsad]

I am getting this warning too ... also no luck with other upload protocol like avrisp and usbasp. :(

[mathklk]

any update to this?

[zerog2k]

assuming that platform.json needs to depend on tool-avrdude
https://registry.platformio.org/tools/platformio/tool-avrdude

can you try installing this in your platformio session locally to see if it helps?