#include "mfrcproxy.h"

MfrcProxy::MfrcProxy(SpiMaster* spi, ShiftReg<NFC_PORTS>*  csReg, uint8_t csPin, void (detectCb)(MfrcProxy* proxy, Uid uid, void* data), void* userData):
_csReg(csReg), _spi(spi), _detectCb(detectCb), _userData(userData), _csPin(csPin)
{
	
}

uint8_t MfrcProxy::read(uint8_t addr)
{
	_csReg->setBit(_csPin, false);
	_delay_us(5);
	_spi->readWrite(addr);
	_delay_us(5);
	uint8_t res = _spi->readWrite();
	_csReg->setBit(_csPin, true);
	return res;
}

void MfrcProxy::irq()
{
	if(read(REG_IRQ_BITS))
	{
		uint8_t len = read(REG_UID_LEN);
		if(len > 0 && len < 11)
		{
			Uid uid;
			for(uint8_t i = 0; i < len; ++i)
			{
				uid.uidByte[i] = read(REG_UID_START_REG+i);
			}
			uid.size = len;
			_detectCb(this, uid, _userData);
		}
	}
}

bool MfrcProxy::probe(SpiMaster* spi, ShiftReg<NFC_PORTS>*  csReg, uint8_t csPin)
{
	csReg->setBit(csPin, false);
	_delay_us(5);
	spi->readWrite(REG_CHIP_ID);
	_delay_us(5);
	uint8_t version = spi->readWrite();
	csReg->setBit(csPin, true);
	return version == 0x87;
}

uint8_t MfrcProxy::getId()
{
	return read(REG_ID);
}