   Wire.write(0x01);
   Wire.write(0x00);
   Wire.endTransmission();
-//  Wire.beginTransmission(0x20);
-//  //Write '1' to GPB0-GPB3
-//  Wire.write(0x13);
-//  Wire.write(0x0f);
-//  Wire.endTransmission();
 
   //select SDA0 / SCL0
   selectI2cChannels(I2C_CHANNEL_SDSC0);

#define I2C_CHANNEL_SDSC6 0x40
#define I2C_CHANNEL_SDSC7 0x80

int ledState = 0;
int result = 0;


void setup() {
  // put your setup code here, to run once:
  delay(2000);
  
  Wire.begin();


#include <Wire.h>


#define PCA9548ADDR 0x70

