Support for multiple Chips missing? about mcp23s17 HOT 13 CLOSED

//
//    FILE: MCP23S17_two.ino
//  AUTHOR: Rob Tillaart
// PUPROSE: demo two MCP23017 devices
//
// see issue #19 library

#include "MCP23S17.h"
#include "SPI.h"

MCP23S17 MCP_A(10, 12, 11, 13);  //  SW SPI
MCP23S17 MCP_B(9 , 12, 11, 13);  //  SW SPI, different select pin!

//  MCP23S17 MCP_A(10);  //  HW SPI
//  MCP23S17 MCP_B(9);   //  HW SPI, different select pin!

void setup()
{
  Serial.begin(115200);
  Serial.println();
  Serial.print("MCP23S17_LIB_VERSION: ");
  Serial.println(MCP23S17_LIB_VERSION);
  Serial.println();
  delay(100);

  SPI.begin();
  MCP_A.begin();
  MCP_B.begin();

  //  test connected
  int c = testConnection(MCP_A);
  Serial.print("Connect A: ");
  Serial.println(c);
  c = testConnection(MCP_B);
  Serial.print("Connect B: ");
  Serial.println(c);

  //  all pins OUTPUT  LOW
  MCP_A.pinMode16(0);
  MCP_A.write16(0x0000);
  MCP_B.pinMode16(0);
  MCP_B.write16(0x0000);
}

void loop()
{
  int x = random(32);
  if (x < 16)
  {
    MCP_A.digitalWrite(x, HIGH);
    delay(100);
    MCP_A.digitalWrite(x, LOW);
  }
  else
  {
    x -= 16;
    MCP_B.digitalWrite(x, HIGH);
    delay(100);
    MCP_B.digitalWrite(x, LOW);
  }
}

//
//  the connection test tries to write a magic number to a register
//  and read it back. If it is the same it is assumed to be connected
//
int testConnection(MCP23S17 & mcp)
{
  uint16_t magic_test_number = 0xABCD;

  //  Read the current polarity config to restore later
  uint16_t old_value;
  if (! mcp.getPolarity16(old_value)) return -1;

  //  Write the magic number to polarity register
  if (! mcp.setPolarity16(magic_test_number)) return -2;

  //  Read back the magic number from polarity register
  uint16_t temp;
  if (! mcp.getPolarity16(temp)) return -3;

  //  Write old config to polarity register
  if (! mcp.setPolarity16(old_value)) return -4;

  //  Check the magic connection test
  if (temp != magic_test_number) return -5;

  return 0;  //  OK
}

//  -- END OF FILE --

MCP.enableControlRegister(0x08);

//
//  AUTHOR: Rob Tillaart / Felix Lindemann
// PUPROSE: demo two MCP23017 devices
//
// see issue #19 library

#include "MCP23S17.h"
#include "SPI.h"

const int wCS = 9;
const int wCLK = 13;
const int wSI = 11;
const int wSO = 12;


MCP23S17 MCP_A(wCS,wSI, wSO, wCLK, 0x00 );  
MCP23S17 MCP_B(wCS,wSI, wSO, wCLK, 0x01 );  
 

void setup()
{
  Serial.begin(115200);
  Serial.println();
  Serial.print("MCP23S17_LIB_VERSION: ");
  Serial.println(MCP23S17_LIB_VERSION);
  Serial.println();
  delay(500);

  SPI.begin();
  MCP_A.begin();
  MCP_B.begin();
  MCP_A.enableHardwareAddress(); 
  MCP_B.enableHardwareAddress(); 
 
  //  all pins OUTPUT  LOW
  MCP_A.pinMode16(0);
  MCP_A.write16(0x0000);
  MCP_B.pinMode16(0);
  MCP_B.write16(0x0000);
}

void loop()
{ 
  int x= 1;
  int y= 8;
    Serial.println("8/1");
    MCP_A.digitalWrite(x, LOW);
    MCP_A.digitalWrite(y, HIGH);
    MCP_B.digitalWrite(x, HIGH);
    MCP_B.digitalWrite(y, LOW);
    delay(1000);
    Serial.println("1/8");
    MCP_A.digitalWrite(x, HIGH);
    MCP_A.digitalWrite(y, LOW);
    MCP_B.digitalWrite(x, LOW);
    MCP_B.digitalWrite(y, HIGH);
    delay(1000);
}
 

//  -- END OF FILE --

void loop()
{ 
  int x= 0;
  int y= 7;
    Serial.println("8/1");
    MCP_A.digitalWrite(x, LOW);
    MCP_A.digitalWrite(y, HIGH);
    MCP_B.digitalWrite(x, HIGH);
    MCP_B.digitalWrite(y, LOW);
    delay(1000);
    Serial.println("1/8");
    MCP_A.digitalWrite(x, HIGH);
    MCP_A.digitalWrite(y, LOW);
    MCP_B.digitalWrite(x, LOW);
    MCP_B.digitalWrite(y, HIGH);
    delay(1000);
}