Thanks solved the problem

Thanks, my college which have the problem just left, but I'll check with him.
But how can there be an environent variable set in a compleately clean msys32?
Does it pick up variables from Windows somewhere?

Environment - IDF version: Current master and release/v3.2 - Build System: [Make] - Compiler version: (crosstool-NG crosstool-ng-1.22.0-80-g6c4433a5) 5.2.0 - Operating System: [Windows] Problem Description Suddenly building stopped working. We have tried checking out a compleately clean esp-idf and ...

Try it out, they have pathched it https://github.com/espressif/esp-idf/issues/1004.
Haven't tried it myself yet.

Hi, Please include following solution into UART driver specific to uart_set_pin function to solve issue of extra byte 0xFF while configuring UART. if(tx_io_num >= 0) { PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[tx_io_num], PIN_FUNC_GPIO); PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[tx_io_num], PIN_FUNC_GPIO); gpio_set_...

Ritesh, you can look into HardwareSerial.cpp as well and see what happens when you start arduino Serial :) it's pretty straight forward. hi Me-no-dev, ok - UART runs in IDF environment :) btw: void checkForData() can we trigger this? or do we must create a task for lookup? txs! best wishes rudi ;-)...

I'm having the same problem, did you find a fix?