printf() doesnt produce any output

[pastcompute]

Using a very simple program Serial.begin(); Serial.println("Hello World"); works, but Serial.begin(); printf("Hello, world\n"); produces no output.

I had a look at the code, printf() ends up calling ets_vprintf so I assume that that call is not working either.

I haven't done anything unusual yet, just an ESP201 module.

Is there some (undocumented) call to enable mixing of ets_printf with Serial? I know when using the SDK there is some trickery involved in making a workable printf function on the uart in various cases...

[igrr]

Serial.setDebugOutput(true); should enable ets_printf output through Serial.

[igrr]

extern "C" void system_set_os_print(int);

void setup() {
  system_set_os_print(...);
}

[pastcompute]

No worries. thanks that worked. I add a pull request to mention setDebugOutput in the readme