CC2540 SPI help required

Hello,

I have been working on a custom board with a CC2540 that interfaces with a NXP via SPI. I am using a modified version of SimpleBLEPeripheral. The first custom board was working correctly and I can read NFC tags and pass them through BLE. I have since had a new custom board made with some minor alterations and it is no longer interfacing correctly. I have found the line of code that it seems to have trouble passing:

PCD_ReadRegister(ComIrqReg); 
// ComIrqReg[7..0] bits are: Set1 TxIRq RxIRq IdleIRq HiAlertIRq LoAlertIRq ErrIRq TimerIRq
// From MFRC522 data sheet: http://www.nxp.com/documents/data_sheet/MFRC522.pdf

ComIrqReg = 0x04 << 1
// interrupt request bits

This is the PCD_ReadRegister code:

uint8 PCD_ReadRegister( uint8 reg ) 
// The register to read from. One of the PCD_Register enums. 

{
uint8 value;

HalSPISelectSlave(); 
// Select slave

(void)HalSPIWriteRead(0x80 | (reg & 0x7E)); 
// MSB == 1 is for reading. LSB is not used in address. Datasheet section 8.1.2.3.

value = HalSPIWriteRead(0); 
// Read the value back. Send 0 to stop reading.

HalSPIDeselectSlave(); 
// Release slave again

return value;
}

HalSPIWriteRead, HalSPIDeselectSlave and HalSPISelectSlave are the default code from hal_spi.c in the software stack:

uint8 HalSPIWriteRead(uint8 byteTx)
{
  uint8 byteRx = 0;
  // Write byte to USART0 buffer (transmit data).

  U0DBUF = byteTx;
  // Check if byte is transmitted.

  while(!(U0CSR & U0CSR_TX_BYTE));
  // Clear transmit byte status.

  U0CSR &= ~U0CSR_TX_BYTE;
  byteRx = U0DBUF;
  
  return byteRx;
}

void HalSPISelectSlave(void)
{
  SSPin = 0;
}

void HalSPIDeselectSlave(void)
{
  SSPin = 1;
}

Attached are some schematics of the new and old setup.

I've been staring at this for a couple of days and can't see where I'm going wrong? Thank you for in advance for any assistance with this.