Using GPIO10 ( S3 ) on Nodemcu board
Posted: Fri Jan 06, 2017 4:53 amAnyone know how to make this pin usable as an output ?
Ran out of pins
Thanks
Ran out of pins
Thanks
Or disable Serial1 on D4 and use that pin?
Any ideas?
Thanks
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Using GPIO10 ( S3 ) on Nodemcu board
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Posted: Fri Jan 06, 2017 4:53 amRe: Using GPIO10 ( S3 ) on Nodemcu board
Posted: Fri Jan 06, 2017 5:49 amRe: Using GPIO10 ( S3 ) on Nodemcu board
Posted: Fri Jan 06, 2017 9:34 amGPIO10 is used by the Flash in QIO mode, but it can be freed if you use it only in DIO and if you have some soldering skill : http://smarpl.com/content/esp8266-esp-2 ... and-gpio10
For freeing Serial1-TX, use alternate function described here wiki/doku.php?id=esp8266_gpio_pin_allocations
Quickly it would be :
But why bother with all this when you can simply add a GPIO expander on I2C bus ?
For freeing Serial1-TX, use alternate function described here wiki/doku.php?id=esp8266_gpio_pin_allocations
Quickly it would be :
Code: Select all
PIN_FUNC_SELECT(PERIPHS_IO_MUX_U0TXD_U, PERIPHS_IO_MUX_U0TXD_U);But why bother with all this when you can simply add a GPIO expander on I2C bus ?
Re: Using GPIO10 ( S3 ) on Nodemcu board
Posted: Fri Jan 06, 2017 3:15 pmYou can use GPIO-10 if you use Flash Mode DIO. It doesn't need any de-soldering of the flash chip pin. Some info here: https://github.com/esp8266/Arduino/issues/2124
Using the Arduino IDE you need to use "Generic ESP8266 Module" to show the Flash mode setting in the Tools menu.
Using the Arduino IDE you need to use "Generic ESP8266 Module" to show the Flash mode setting in the Tools menu.