/**
* init
*
* Initialize panStamp board
*
* 'freq' New carrier frequency
*/
void PANSTAMP::init(byte freq)
{
int i;
// Calibrate internal RC oscillator
rtcCrystal = false; //rcOscCalibrate();
// Intialize registers
for(i=0 ; i<regTableSize ; i++)
regTable[i]->init();
// Setup CC1101
cc1101.init(freq);
// Security disabled by default
security = 0;
delayMicroseconds(50);
// Enter RX state
cc1101.setRxState();
// Attach callback function for GDO0 (INT0)
enableIRQ_GDO0();
// Default values
nonce = 0;
systemState = SYSTATE_RXON;
}
/**
* radioISR
*
* Radio interrupt routine
*/
void radioISR(void)
{
// Disable interrupt
disableIRQ_GDO0();
if (panstamp.radio.rfState == RFSTATE_RX)
{
static CCPACKET ccPacket;
bool eval = true;
// Any packet waiting to be read?
if (panstamp.radio.receiveData(&ccPacket) > 0)
{
// Is CRC OK?
if (ccPacket.crc_ok)
{
if (panstamp.ccPacketReceived != NULL)
panstamp.ccPacketReceived(&ccPacket);
}
}
}
// Enable interrupt
enableIRQ_GDO0();
}
/**
* init
*
* Initialize panStamp board
*/
void PANSTAMP::init()
{
int i;
// Calibrate internal RC oscillator
//rtcCrystal = rcOscCalibrate();
// Intialize registers
for(i=0 ; i<regTableSize ; i++)
regTable[i]->init();
// Setup CC1101
cc1101.init();
// Security disabled by default
security = 0;
#ifdef SWAP_EXTENDED_ADDRESS
/*
// Read extended device address from EEPROM
swapAddress = EEPROM.read(EEPROM_DEVICE_ADDR);
swapAddress <<= 8;
swapAddress = EEPROM.read(EEPROM_DEVICE_ADDR + 1);
*/
#endif
/*
// Read periodic Tx interval from EEPROM
txInterval[0] = EEPROM.read(EEPROM_TX_INTERVAL);
txInterval[1] = EEPROM.read(EEPROM_TX_INTERVAL + 1);
*/
delayMicroseconds(50);
// Enter RX state
cc1101.setRxState();
// Attach callback function for GDO0 (INT0)
enableIRQ_GDO0();
// Default values
nonce = 0;
systemState = SYSTATE_RXON;
}
/**
* init
*
* Initialize panStamp board
*
* @param freq Carrier frequency
* @param mode Working mode (speed, ...)
*/
void PANSTAMP::init(uint8_t freq, uint8_t mode)
{
// Calibrate internal RC oscillator
rcOscCalibrate();
// Setup CC1101
radio.init(freq, mode);
delayMicroseconds(50);
// Enter RX state
radio.setRxState();
// Attach callback function for GDO0 (INT0)
enableIRQ_GDO0();
// Default values
state = RXON;
}
/**
* isrGDO0event
*
* Event on GDO0 pin (INT0)
*/
void isrGDO0event(void)
{
// Disable interrupt
disableIRQ_GDO0();
if (panstamp.cc1101.rfState == RFSTATE_RX)
{
static CCPACKET ccPacket;
static SWPACKET swPacket;
REGISTER *reg;
bool eval = true;
if (panstamp.cc1101.receiveData(&ccPacket) > 0)
{
if (ccPacket.crc_ok)
{
swPacket = SWPACKET(ccPacket);
#ifdef SWAP_EXTENDED_ADDRESS
if (swPacket.addrType == SWAPADDR_EXTENDED)
#else
if (swPacket.addrType == SWAPADDR_SIMPLE)
#endif
{
// Repeater enabled?
if (panstamp.repeater != NULL)
panstamp.repeater->packetHandler(&swPacket);
// Smart encryption locally enabled?
if (panstamp.security & 0x02)
{
// OK, then incoming packets must be encrypted too
if (!(swPacket.security & 0x02))
eval = false;
}
}
else
eval = false;
if (eval)
{
// Function
switch(swPacket.function)
{
case SWAPFUNCT_CMD:
// Command not addressed to us?
if (swPacket.destAddr != panstamp.swapAddress)
break;
// Current version does not support data recording mode
// so destination address and register address must be the same
if (swPacket.destAddr != swPacket.regAddr)
break;
// Valid register?
if ((reg = getRegister(swPacket.regId)) == NULL)
break;
// Anti-playback security enabled?
if (panstamp.security & 0x01)
{
// Check received nonce
if (panstamp.nonce != swPacket.nonce)
{
// Nonce missmatch. Transmit correct nonce.
reg = getRegister(REGI_SECUNONCE);
reg->sendSwapStatus();
break;
}
}
// Filter incorrect data lengths
if (swPacket.value.length == reg->length)
reg->setData(swPacket.value.data);
else
reg->sendSwapStatus();
break;
case SWAPFUNCT_QRY:
// Only Product Code can be broadcasted
if (swPacket.destAddr == SWAP_BCAST_ADDR)
{
if (swPacket.regId != REGI_PRODUCTCODE)
break;
}
// Query not addressed to us?
else if (swPacket.destAddr != panstamp.swapAddress)
break;
// Current version does not support data recording mode
// so destination address and register address must be the same
if (swPacket.destAddr != swPacket.regAddr)
break;
// Valid register?
if ((reg = getRegister(swPacket.regId)) == NULL)
break;
reg->getData();
break;
case SWAPFUNCT_STA:
// User callback function declared?
if (panstamp.statusReceived != NULL)
panstamp.statusReceived(&swPacket);
break;
default:
break;
}
}
}
}
}
// Enable interrupt
enableIRQ_GDO0();
}
