ESP8266 Community Forum

- Sun Sep 06, 2015 9:40 am #27940 So, analogWrite(1,0) should turn off the LED completely and other values should dim the LED, right? Or is it a known bug?

- Sun Sep 06, 2015 9:50 am #27943 Although I've never tried the anaologWrite() function, but I presume it assume that the pins is already in GPIO mode, which is not the case for TX pin. You probably need to switch it to alternate GPIO function before analogWrite() using something like :

Code: Select allPIN_FUNC_SELECT(PERIPHS_IO_MUX_U0TXD_U, FUNC_GPIO1); // Switch TX pin to GPIO mode


Details can be found here : wiki/doku.php?id=esp8266_gpio_pin_allocations