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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@user94070
Yes, serial and WEB TCP/IP both are working fine to upload code.
And one more thing I'm using NodeMCU, which runs on the ESP8266.
I uploaded firmware in it and everything works fine except RX.
My Thinking about this issue:
I'm not sure but may be, RX in standalone ESP8266 is accessible but RX in NodeMCU is not accessible, by some hardware reason or RX is busy for some other task.
or may be bug in v1.99
Please provide me your exact firmware. (if possible) becaue I'm using 4mb version that may be differ from yours.