[riot-notifications] [RIOT-OS/RIOT] ESP32: `write(STDIO_FILENO, ...)` not working (#11354)
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Thu Apr 11 16:58:23 CEST 2019
@maribu Thanks for figuring out this problem. It seems that ESP32's newlibc `_write_r` function does't write to the UART interface for `stdout`. The reason isn't really clear to me at the moment. Maybe, it requires that `stdout` is opened explicitly at startup.
Since I'm quite busy at the moment, I have no time to investigate it in more deep. Therefore, I will provide a PR which uses `newlib_syscalls_default` module by default as many other architectures do. That will fix the problem for now.
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