PN532 I2C and Seeed Xiao nrf52840

Products & Technology XIAO
3

Hi
Yes, I have selected the right board which is Seeed XAIO BLE -nrf52840
The Arduino example sketches and a few others run fine. I am also having trouble getting a I2C 128x128 OLED (SSD1327) to work as well.
I am running version 2.6.1 under board manager. I did try version 1.0.0 but its not making any difference.
If I run the I2C scanner code below it finds the address for the PN532 or OLED so the connection seems fine

#include <Wire.h> //include Wire.h library

void setup()
{
Wire.begin(); // Wire communication begin
Serial.begin(9600); // The baudrate of Serial monitor is set in 9600
while (!Serial); // Waiting for Serial Monitor
Serial.println("\nI2C Scanner");
}

void loop()
{
byte error, address; //variable for error and I2C address
int nDevices;

Serial.println(“Scanning…”);

nDevices = 0;
for (address = 1; address < 127; address++ )
{
// The i2c_scanner uses the return value of
// the Write.endTransmisstion to see if
// a device did acknowledge to the address.
Wire.beginTransmission(address);
error = Wire.endTransmission();

if (error == 0)
{
  Serial.print("I2C device found at address 0x");
  if (address < 16)
    Serial.print("0");
  Serial.print(address, HEX);
  Serial.println("  !");
  nDevices++;
}
else if (error == 4)
{
  Serial.print("Unknown error at address 0x");
  if (address < 16)
    Serial.print("0");
  Serial.println(address, HEX);
}

}
if (nDevices == 0)
Serial.println(“No I2C devices found\n”);
else
Serial.println(“done\n”);

delay(5000); // wait 5 seconds for the next I2C scan
}