Not work on nodemcu v3 PCF8575ST

[masteriii]

I try to test on nodemcu v3 but not working.. /* Blink led on PIN0 by Mischianti Renzo http://www.mischianti.org

https://www.mischianti.org/2019/01/02/pcf8574-i2c-digital-i-o-expander-fast-easy-usage/ */

include "Arduino.h"

include "PCF8574.h"

// Set i2c address PCF8574 pcf8574(0x20);

void setup() { Serial.begin(115200);

// Set pinMode to OUTPUT
pcf8574.pinMode(P0, OUTPUT);

pcf8574.pinMode(P1, OUTPUT); pcf8574.pinMode(P2, OUTPUT); pcf8574.pinMode(P3, OUTPUT); pcf8574.pinMode(P4, OUTPUT); pcf8574.pinMode(P5, OUTPUT); pcf8574.pinMode(P6, OUTPUT); pcf8574.pinMode(P7, OUTPUT); pcf8574.begin(); }

void loop() { int i;

pcf8574.digitalWrite(P0, HIGH);

pcf8574.digitalWrite(P1, HIGH); pcf8574.digitalWrite(P2, HIGH); pcf8574.digitalWrite(P3, HIGH); pcf8574.digitalWrite(P4, HIGH); pcf8574.digitalWrite(P5, HIGH); pcf8574.digitalWrite(P6, HIGH); pcf8574.digitalWrite(P7, HIGH);

delay(1000);

pcf8574.digitalWrite(P0, LOW); pcf8574.digitalWrite(P1, LOW); pcf8574.digitalWrite(P2, LOW); pcf8574.digitalWrite(P3, LOW); pcf8574.digitalWrite(P4, LOW); pcf8574.digitalWrite(P5, LOW); pcf8574.digitalWrite(P6, LOW); pcf8574.digitalWrite(P7, LOW);

delay(1000);

}

[xreef]

Hi masteriii, I need more information to help you. I work without problem on nodemcu. Bye Renzo

[masteriii]

Thank you Xreef, I use xreef/PCF8574_library to control PCF8575 (IO Expander Module I2C To 16IO) to make 8 LEDs turn on/off but anything happen with code above. It can complie and upload to nodemcu v3 (ESP8266). I try to research all day but cannot solve the problem.

PCF8575TS https://www.aliexpress.com/item/PCF8575-IO-Expander-Module-I2C-To-16IO-Integrated-Circuits-New-2018/32862386560.html?spm=a2g13.10010108.1000001.11.4bec51f8WRTOGu

ESP8266 CH340G NodeMcu V3 https://bit.ly/2JLrZTt

[xreef]

Hi, this library is for pcf8574 not 8575. Bye

[xreef]

https://github.com/xreef/PCF8575_library

I write a first release of a library for PCF8575, if you want try use the link upper. Bye