digital potentiometer using mcp4131 and wemos D1 mini

[mohamed Abdulmajid]

hello everyone , 

i'm trying to make a digital potentiometer to control the luminance of an LED using mcp4131 and wemos D1 mini. the mcp4131 digipot uses SPI communication. i have used a simple arduino code for testing, it worked with my arduino uno, but when i tried it with wemos D1 it doesn't work! 

- could anyone tell me where is the problem ??

- does tasmota support the mcp4131 digital potentiometer ? 

.

.

here is the simple arduino code :

#include <SPI.h>

byte address = 0x00;

int CS= 15;                // pin numper is 15 for wemos , 10 for arduino 

void setup()

{

pinMode (CS, OUTPUT);

SPI.begin();

}

void loop()

{

for (int i = 0; i <= 128; i++)

{

digitalPotWrite(i);

delay(10);

}

delay(500);

for (int i = 128; i >= 0; i--)

{

digitalPotWrite(i);

delay(10);

}

}

int digitalPotWrite(int value)

{

digitalWrite(CS, LOW);

SPI.transfer(address);

SPI.transfer(value);

digitalWrite(CS, HIGH);

}