ESP8266 Community Forum

- Mon Oct 20, 2014 3:37 am #1784 I was wondering, does anyone know where does function os_printf output to?

In user_mail.c of the AT there is:

Code: Select allos_printf("\r\nready!!!\r\n");

and os_printf is actually the ets_sprintf as found in osapi.h

Code: Select all#define os_sprintf  ets_sprintf

Thanks

- Mon Oct 20, 2014 5:50 am #1786 Maybe GPIO02, mapped as Tx out?

- Mon Oct 20, 2014 6:04 am #1787 os_printf will output to the "system" out, that's normally on GPIO2.
You can change that with

Code: Select allos_install_putc1((void *)uart0_write_char);

(You'd need to define uart0_write_char if I'm not mistaken)

- Mon Oct 20, 2014 6:07 am #1788 Ok thanks to both!

What OS is this btw? - I am asking because I hope there is a better documentation then the one in SDK_v0.9.pdf file.