/**
* @brief this function reads the configuration registers according to AFE_SET_ANALOG_CONFIG command
* @param *pDataRead : Pointer to the PCD response
* @retval ISO14443B_SUCCESSCODE : the function is successful.
* @retval ISO14443B_ERRORCODE_DEFAULT : an error occured
*/
static int8_t ISO14443BReadARConfigB (uint8_t *pDataRead )
{
int8_t status;
uc8 data = 0x01;
/* Select the register */
errchk(PCD_WriteRegister (0x03,AFE_ANALOG_CONF_REG_SELECTION,0x00,&data,pDataRead));
/* Read the ARConfigA and B register */
errchk(PCD_ReadRegister ( 0x03,AFE_ANALOG_CONF_REG_SELECTION,0x02,0x01,pDataRead));
return ISO14443B_SUCCESSCODE;
Error:
return ISO14443B_ERRORCODE_DEFAULT;
}
/**
* @brief this command initializes the PCD device for the IS014443A protocol
* @param none
* @return ISO14443A_SUCCESSCODE the function is succesful
* @return ISO14443A_ERRORCODE_DEFAULT : an error occured
*/
int8_t ISO14443A_Init ( void )
{
u8 ProtocolSelectParameters [] = {0x00, 0x01, 0xA0},
WriteRegisterParameters [] = {0x5A, 0x04},
DemoGainParameters [] = {0x01, 0xDF};
uint8_t *pDataRead = u95HFBuffer;
int8_t status;
ISO14443A_InitStructure( );
/* sends a protocol Select command to the pcd to configure it */
errchk(PCD_ProtocolSelect(0x04,PCD_PROTOCOL_ISO14443A,ProtocolSelectParameters,pDataRead));
errchk(PCD_WriteRegister ( 0x04,0x3A,0x00,WriteRegisterParameters,pDataRead));
/* in order to adjust the demoduation gain of the PCD*/
errchk(PCD_WriteRegister (0x04,0x68,0x01,DemoGainParameters,u95HFBuffer));
#if 0
errchk(PCD_WriteRegister ( 0x03,0x68,0x00,&StartIndex,pDataRead));
for(i=0; i<=1; i++)
{
errchk(PCD_WriteRegister ( 0x03,0x69,0x00,&DemoGainParameters[i],pDataRead));
}
errchk(PCD_WriteRegister ( 0x03,0x68,0x00,&StartIndex,pDataRead));
for(i=0; i<=5; i++)
{
errchk(PCD_ReadRegister ( 0x03,0x69,0x01,0x00,pDataRead));
DemoGainParameters[i] = pDataRead[2];
}
#endif
return ISO14443A_SUCCESSCODE;
Error:
return ISO14443A_ERRORCODE_DEFAULT;
}
