uint8_t CC110x::detectBurst(void) { // wake up CC1101 from power down state
// 10 7/10 5 in front of the received string; 33 after received string
// 10 - 00001010 - sync word found
// 7 - 00000111 - GDO0 = 1, GDO2 = 1
// 5 - 00000101 - GDO0 = 1, GDO2 = 1
// 33 - 00100001 - GDO0 = 1, preamble quality reached
// 96 - 01100000 - burst sent
// 48 - 00110000 - in receive mode
//
// Status byte table:
// 0 current GDO0 value
// 1 reserved
// 2 GDO2
// 3 sync word found
// 4 channel is clear
// 5 preamble quality reached
// 6 carrier sense
// 7 CRC ok
//
// possible solution for finding a burst is to check for bit 6, carrier sense
// set RXTX module in receive mode
cc1101_Select(); // select CC1101
wait_Miso(); // wait until MISO goes low
cc1101_Deselect(); // deselect CC1101
cmdStrobe(CC1101_SRX); // set RX mode again
_delay_ms(3); // wait a short time to set RX mode
// todo: check carrier sense for 5ms to avoid wakeup due to normal transmition
//Serial << F("rx\n");
// return bitRead(hm.cc.monitorStatus(),6); // return the detected signal
return bitRead(monitorStatus(),6); // return the detected signal
}
// Reset CC1101 (requires implementation here since microsecond delay can't be done reliably via serial)
void resetRf()
{
cc1101_Deselect();
delayMicroseconds(5);
cc1101_Select();
delayMicroseconds(10);
cc1101_Deselect();
delayMicroseconds(41);
cc1101_Select();
wait_Miso();
SPI.transfer(0x30); // SRES
wait_Miso();
cc1101_Deselect();
}
/**
* readReg
*
* Read CC1101 register via SPI
*
* 'regAddr' Register address
* 'regType' Type of register: CC1101_CONFIG_REGISTER or CC1101_STATUS_REGISTER
*
* Return:
* Data byte returned by the CC1101 IC
*/
byte CC1101_readReg(byte regAddr, byte regType)
{
byte addr, val;
addr = regAddr | regType;
cc1101_Select(); // Select CC1101
wait_Miso(); // Wait until MISO goes low
// // have to do it twice for some reason, first read fails
// spi_send(addr); // Send register address
// //val = spi_send(addr);
// DSK6713_waitusec(5);
// //DSK6713_waitusec(25);
// val = spi_send(0x00); // Read result
// DSK6713_waitusec(20);
//
// spi_send(addr); // Send register address
// DSK6713_waitusec(5);
// val = spi_send(0x00); // Read result
// DSK6713_waitusec(20);
val = spiReadReg(addr);
cc1101_Deselect(); // Deselect CC1101
return val;
}
void CC110x::writeBurst(uint8_t regAddr, uint8_t *buf, uint8_t len) { // write multiple registers into the CC1101 IC via SPI
cc1101_Select(); // select CC1101
wait_Miso(); // wait until MISO goes low
sendSPI(regAddr | WRITE_BURST); // send register address
for(uint8_t i=0 ; i<len ; i++) sendSPI(buf[i]); // send value
cc1101_Deselect(); // deselect CC1101
}
void CC110x::readBurst(uint8_t *buf, uint8_t regAddr, uint8_t len) { // read burst data from CC1101 via SPI
cc1101_Select(); // select CC1101
wait_Miso(); // wait until MISO goes low
sendSPI(regAddr | READ_BURST); // send register address
for(uint8_t i=0 ; i<len ; i++) buf[i] = sendSPI(0x00); // read result byte by byte
cc1101_Deselect(); // deselect CC1101
}
/**
* cmdStrobe
*
* Send command strobe to the CC1101 IC via SPI
*
* 'cmd' Command strobe
*/
void CC1101::cmdStrobe(byte cmd)
{
cc1101_Select(); // Select CC1101
wait_Miso(); // Wait until MISO goes low
spi.send(cmd); // Send strobe command
cc1101_Deselect(); // Deselect CC1101
}
void CC110x::writeReg(uint8_t regAddr, uint8_t val) { // write single register into the CC1101 IC via SPI
cc1101_Select(); // select CC1101
wait_Miso(); // wait until MISO goes low
sendSPI(regAddr); // send register address
sendSPI(val); // send value
cc1101_Deselect(); // deselect CC1101
}
/**
* writeReg
*
* Write single register into the CC1101 IC via SPI
*
* 'regAddr' Register address
* 'value' Value to be writen
*/
void CC1101::writeReg(byte regAddr, byte value)
{
cc1101_Select(); // Select CC1101
wait_Miso(); // Wait until MISO goes low
spi.send(regAddr); // Send register address
spi.send(value); // Send value
cc1101_Deselect(); // Deselect CC1101
}
uint8_t CC110x::readReg(uint8_t regAddr, uint8_t regType) { // read CC1101 register via SPI
cc1101_Select(); // select CC1101
wait_Miso(); // wait until MISO goes low
sendSPI(regAddr | regType); // send register address
uint8_t val = sendSPI(0x00); // read result
cc1101_Deselect(); // deselect CC1101
return val;
}
/*
* initialize CC1101
*/
void cc1101Init(uint8_t mode100k) {
cli();
bitSet(DDR_SPI, PIN_SPI_SS); // set B2(SS) as Output
bitSet(DDR_SPI, PIN_SPI_MOSI); // set B3(MOSI) as Output
bitClear(DDR_SPI, PIN_SPI_MISO); // set B4(MISO) as Input
bitSet(DDR_SPI, PIN_SPI_SCK); // set B5(SCK) as Output
bitClear(DDR_GDO0, PIN_GDO0); // set B2(SS) as Input
bitSet(PORT_SPI, PIN_SPI_SS); // set SS high
bitSet(PORT_SPI, PIN_SPI_SCK); // set SCK high
bitClear(PORT_SPI, PIN_SPI_MOSI); // set MOSI high
SPCR = _BV(SPE) | _BV(MSTR); // SPI speed = CLK/4
cc1101_Deselect(); // some deselect and selects to initialize the TRX868modul
_delay_us(30);
cc1101_Select();
_delay_us(30);
cc1101_Deselect();
_delay_us(45);
cmdStrobe(CC1101_SRES); // send reset
_delay_us(100);
for (uint8_t i=0; i<sizeof(initVal); i += 2) { // write initialize value to cc1101
writeReg(pgm_read_byte(&initVal[i]), pgm_read_byte(&initVal[i+1]));
}
if (mode100k) { // switch to 100k mode
for (uint8_t i=0; i<sizeof(initValUpdate); i += 2) { // write initialize value to cc1101
writeReg(
pgm_read_byte(&initValUpdate[i]),
pgm_read_byte(&initValUpdate[i+1])
);
}
}
cmdStrobe(CC1101_SCAL); // calibrate frequency synthesizer and turn it off
_delay_ms(4);
do {
cmdStrobe(CC1101_SRX);
} while (readReg(CC1101_MARCSTATE, CC1101_STATUS) != 0x0D);
writeReg(CC1101_PATABLE, PA_MaxPower); // configure PATABLE
cmdStrobe(CC1101_SRX); // flush the RX buffer
cmdStrobe(CC1101_SWORRST); // reset real time clock
_delay_ms(3);
sei();
}
/**
* reset
*
* Reset CC1101
*/
void CC1101::reset(void)
{
cc1101_Deselect(); // Deselect CC1101
delayMicroseconds(5);
cc1101_Select(); // Select CC1101
delayMicroseconds(10);
cc1101_Deselect(); // Deselect CC1101
delayMicroseconds(41);
cc1101_Select(); // Select CC1101
wait_Miso(); // Wait until MISO goes low
spi.send(CC1101_SRES); // Send reset command strobe
wait_Miso(); // Wait until MISO goes low
cc1101_Deselect(); // Deselect CC1101
setDefaultRegs(); // Reconfigure CC1101
setRegsFromEeprom(); // Take user settings from EEPROM
}
/**
* reset
*
* Reset CC1101
*/
void CC1101_reset(void)
{
cc1101_Deselect(); // Deselect CC1101
DSK6713_waitusec(5);
cc1101_Select(); // Select CC1101
DSK6713_waitusec(10);
cc1101_Deselect(); // Deselect CC1101
DSK6713_waitusec(41);
cc1101_Select(); // Select CC1101
wait_Miso(); // Wait until MISO goes low
//spi_send(CC1101_SRES); // Send reset command strobe
spiWriteReg(CC1101_SRES,0x00);
wait_Miso(); // Wait until MISO goes low
cc1101_Deselect(); // Deselect CC1101
CC1101_setDefaultRegs(); // Reconfigure CC1101
//setRegsFromEeprom(); // Take user settings from EEPROM
}
/**
* readBurstReg
*
* Read burst data from CC1101 via SPI
*
* 'buffer' Buffer where to copy the result to
* 'regAddr' Register address
* 'len' Data length
*/
void CC1101::readBurstReg(byte * buffer, byte regAddr, byte len)
{
byte addr, i;
addr = regAddr | READ_BURST;
cc1101_Select(); // Select CC1101
wait_Miso(); // Wait until MISO goes low
spi.send(addr); // Send register address
for(i=0 ; i<len ; i++)
buffer[i] = spi.send(0x00); // Read result byte by byte
cc1101_Deselect(); // Deselect CC1101
}
/**
* readReg
*
* Read CC1101 register via SPI
*
* 'regAddr' Register address
* 'regType' Type of register: CC1101_CONFIG_REGISTER or CC1101_STATUS_REGISTER
*
* Return:
* Data byte returned by the CC1101 IC
*/
byte CC1101::readReg(byte regAddr, byte regType)
{
byte addr, val;
addr = regAddr | regType;
cc1101_Select(); // Select CC1101
wait_Miso(); // Wait until MISO goes low
spi.send(addr); // Send register address
val = spi.send(0x00); // Read result
cc1101_Deselect(); // Deselect CC1101
return val;
}
/**
* writeBurstReg
*
* Write multiple registers into the CC1101 IC via SPI
*
* 'regAddr' Register address
* 'buffer' Data to be writen
* 'len' Data length
*/
void CC1101::writeBurstReg(byte regAddr, byte* buffer, byte len)
{
byte addr, i;
addr = regAddr | WRITE_BURST; // Enable burst transfer
cc1101_Select(); // Select CC1101
wait_Miso(); // Wait until MISO goes low
spi.send(addr); // Send register address
for(i=0 ; i<len ; i++)
spi.send(buffer[i]); // Send value
cc1101_Deselect(); // Deselect CC1101
}
/**
* CC1101_writeReg
*
* Write single register into the CC1101 IC via SPI
*
* 'regAddr' Register address
* 'value' Value to be writen
*/
void CC1101_writeReg(byte regAddr, byte value)
{
cc1101_Select(); // Select CC1101
wait_Miso(); // Wait until MISO goes low
// // waits are needed since CSn is triggered by GPIO which is not in accordance with SPI peripheral which takes few cycles to shift out after you order it
// spi_send(regAddr); // Send register address
// DSK6713_waitusec(5);
// spi_send(value); // Send value
// DSK6713_waitusec(20);
spiWriteReg(regAddr, value);
cc1101_Deselect(); // Deselect CC1101
}
/**
* cmdStrobe
*
* Send command strobe to the CC1101 IC via SPI
*
* 'cmd' Command strobe
*/
void CC1101_cmdStrobe(byte cmd)
{
cc1101_Select(); // Select CC1101
wait_Miso(); // Wait until MISO goes low
// spi_send(cmd); // Send strobe command
//
// // send again, for some reason first send does not work
// DSK6713_waitusec(10);
// spi_send(cmd); // Send strobe command
//
// DSK6713_waitusec(20);
spiWriteReg(cmd,0x00); // basically we only need to send 1 byte
cc1101_Deselect(); // Deselect CC1101
}
/**
* writeBurstReg
*
* Write multiple registers into the CC1101 IC via SPI
*
* 'regAddr' Register address
* 'buffer' Data to be writen
* 'len' Data length
*/
void CC1101_writeBurstReg(byte regAddr, byte* buffer, byte len)
{
byte addr, i;
addr = regAddr | WRITE_BURST; // Enable burst transfer
cc1101_Select(); // Select CC1101
wait_Miso(); // Wait until MISO goes low
//spi_send(addr); // Send register address
spiWriteAddr(addr);
//DSK6713_waitusec(5);
for(i=0 ; i<len ; i++)
{
//spi_send(buffer[i]); // Send value
spiWriteData(buffer[i]);
//DSK6713_waitusec(10);
}
//DSK6713_waitusec(20);
cc1101_Deselect(); // Deselect CC1101
}
/**
* readBurstReg
*
* Read burst data from CC1101 via SPI
*
* 'buffer' Buffer where to copy the result to
* 'regAddr' Register address
* 'len' Data length
*/
void CC1101_readBurstReg(byte * buffer, byte regAddr, byte len)
{
byte addr, i;
addr = regAddr | READ_BURST;
cc1101_Select(); // Select CC1101
wait_Miso(); // Wait until MISO goes low
//spi_send(addr); // Send register address
spiWriteAddr(addr);
//DSK6713_waitusec(5);
for(i=0 ; i<len ; i++)
{
//buffer[i] = spi_send(0x00); // Read result byte by byte
buffer[i] = spiReadData(); // Read result byte by byte
//DSK6713_waitusec(15);
}
//DSK6713_waitusec(20);
cc1101_Deselect(); // Deselect CC1101
}
void CC110x::cmdStrobe(uint8_t cmd) { // send command strobe to the CC1101 IC via SPI
cc1101_Select(); // select CC1101
wait_Miso(); // wait until MISO goes low
sendSPI(cmd); // send strobe command
cc1101_Deselect(); // deselect CC1101
}
void CC110x::init(void) { // initialize CC1101
#if defined(CC_DBG)
Serial << F("CC1101_init: ");
#endif
pinMode(csPin, OUTPUT); // set pins for SPI communication
pinMode(mosiPin, OUTPUT);
pinMode(misoPin, INPUT);
pinMode(sckPin, OUTPUT);
pinMode(gdo0Pin, INPUT); // config GDO0 as input
digitalWrite(csPin, HIGH); // SPI init
digitalWrite(sckPin, HIGH);
digitalWrite(mosiPin, LOW);
SPCR = _BV(SPE) | _BV(MSTR); // SPI speed = CLK/4
cc1101_Deselect(); // some deselect and selects to init the TRX868modul
_delay_us(5);
cc1101_Select();
_delay_us(10);
cc1101_Deselect();
_delay_us(41);
cmdStrobe(CC1101_SRES); // send reset
_delay_ms(10);
#if defined(CC_DBG)
Serial << F("1");
#endif
// define init settings for TRX868
static const uint8_t initVal[] PROGMEM = {
CC1101_IOCFG2, 0x2E, // non inverted GDO2, high impedance tri state
//CC1101_IOCFG1, 0x2E, (default) // low output drive strength, non inverted GD=1, high impedance tri state
CC1101_IOCFG0, 0x06, // packet CRC ok // disable temperature sensor, non inverted GDO0,
CC1101_FIFOTHR, 0x0D, // 0 ADC retention, 0 close in RX, TX FIFO = 9 / RX FIFO = 56 byte
CC1101_SYNC1, 0xE9,
CC1101_SYNC0, 0xCA,
CC1101_PKTLEN, 0x3D, // packet length 61
CC1101_PKTCTRL1, 0x0C, // PQT = 0, CRC auto flush = 1, append status = 1, no address check
CC1101_FSCTRL1, 0x06,
// 868.299866 MHz
//CC1101_FREQ2, 0x21,
//CC1101_FREQ1, 0x65,
//CC1101_FREQ0, 0x6A,
// 868.2895508
CC1101_FREQ2, 0x21,
CC1101_FREQ1, 0x65,
CC1101_FREQ0, 0x50,
CC1101_MDMCFG4, 0xC8,
CC1101_MDMCFG3, 0x93,
CC1101_MDMCFG2, 0x03,
CC1101_DEVIATN, 0x34, // 19.042969 kHz
CC1101_MCSM2, 0x01,
//CC1101_MCSM1, 0x30, (default) // always go into IDLE
CC1101_MCSM0, 0x18,
CC1101_FOCCFG, 0x16,
CC1101_AGCCTRL2, 0x43,
//CC1101_WOREVT1, 0x28, // tEVENT0 = 50 ms, RX timeout = 390 us
//7CC1101_WOREVT0, 0xA0,
//CC1101_WORCTRL, 0xFB, //EVENT1 = 3, WOR_RES = 0
CC1101_FREND1, 0x56, //
CC1101_FSCAL1, 0x00,
CC1101_FSCAL0, 0x11,
CC1101_TEST1, 0x35,
CC1101_PATABLE, 0xC3,
};
for (uint8_t i=0; i<sizeof(initVal); i+=2) { // write init value to TRX868
writeReg(pgm_read_byte(&initVal[i]), pgm_read_byte(&initVal[i+1]));
}
#if defined(CC_DBG)
Serial << F("2");
#endif
cmdStrobe(CC1101_SCAL); // calibrate frequency synthesizer and turn it off
while (readReg(CC1101_MARCSTATE, CC1101_STATUS) != 1) { // waits until module gets ready
_delay_us(1);
#if defined(CC_DBG)
Serial << F(".");
#endif
}
#if defined(CC_DBG)
Serial << F("3");
#endif
writeReg(CC1101_PATABLE, PA_MaxPower); // configure PATABLE
cmdStrobe(CC1101_SRX); // flush the RX buffer
cmdStrobe(CC1101_SWORRST); // reset real time clock
#if defined(CC_DBG)
Serial << F(" - ready\n");
#endif
}
void loop()
{
if (Serial.available() > 0)
{
char inChar = Serial.read();
// Filter all requests by having first char start with '{' and last char with '}'
// Prevents serial garbage from affecting the parser (e.g. other app probing all serial ports)
if (!isReading)
{
if (inChar == '{')
{
isReading = true;
}
else
{
return;
}
}
// read incoming serial data:
inputBuffer[bufferIndex] = inChar;
bufferIndex++;
if (bufferIndex == 5)
{
bufferIndex = 0;
}
if (inChar == '}')
{
isReading = false;
bufferIndex = 0;
if (inputBuffer[4] != '}')
{
// command is not terminated correctly
Serial.print("z0");
}
else
{
byte command = inputBuffer[1];
byte firstParameter = (convertCharToByte(inputBuffer[2]) << 4) | convertCharToByte(inputBuffer[3]);
if (command == 'a')
{
resetRf();
Serial.println("a1");
}
else if (command == 'b')
{
delay(firstParameter);
Serial.println("b1");
}
else if (command == 'c')
{
cc1101_Select();
Serial.println("c1");
}
else if (command == 'd')
{
cc1101_Deselect();
Serial.println("d1");
}
else if (command == 'e')
{
wait_Miso();
Serial.println("e1");
}
else if (command == 'f')
{
SPI.transfer(firstParameter);
Serial.println("f1");
}
else if (command == 'g')
{
Serial.println("ATMEGA328P PRO MINI 0.1");
}
}
}
}
}
void CC110x::init(void) { // initialize CC1101
#if defined(CC_DBG)
Serial << F("CC1101_init: ");
#endif
pinMode(csPin, OUTPUT); // set pins for SPI communication
pinMode(mosiPin, OUTPUT);
pinMode(misoPin, INPUT);
pinMode(sckPin, OUTPUT);
pinMode(gdo0Pin, INPUT); // config GDO0 as input
digitalWrite(csPin, HIGH); // SPI init
digitalWrite(sckPin, HIGH);
digitalWrite(mosiPin, LOW);
SPCR = _BV(SPE) | _BV(MSTR); // SPI speed = CLK/4
cc1101_Deselect(); // some deselect and selects to init the TRX868modul
_delay_us(5);
cc1101_Select();
_delay_us(10);
cc1101_Deselect();
_delay_us(41);
cmdStrobe(CC1101_SRES); // send reset
_delay_ms(10);
#if defined(CC_DBG)
Serial << '1';
#endif
static prog_uint8_t initVal[] PROGMEM = { // define init settings for TRX868
0x00, 0x2E, // IOCFG2: tristate // non inverted GDO2, high impedance tri state
0x01, 0x2E, // IOCFG1: tristate // low output drive strength, non inverted GD=1, high impedance tri state
0x02, 0x06, // IOCFG0: packet CRC ok // disable temperature sensor, non inverted GDO0, asserts when a sync word has been sent/received, and de-asserts at the end of the packet. in RX, the pin will also de-assert when a package is discarded due to address or maximum length filtering
0x03, 0x0D, // FIFOTHR: TX:9 / RX:56 // 0 ADC retention, 0 close in RX, TX FIFO = 9 / RX FIFO = 56 byte
0x04, 0xE9, // SYNC1 // Sync word
0x05, 0xCA, // SYNC0
0x06, 0x3D, // PKTLEN(x): 61 // packet length 61
0x07, 0x0C, // PKTCTRL1: // PQT = 0, CRC auto flush = 1, append status = 1, no address check
0x0B, 0x06, // FSCTRL1: // frequency synthesizer control
0x0D, 0x21, // FREQ2
0x0E, 0x65, // FREQ1
0x0F, 0x6A, // FREQ0
0x10, 0xC8, // MDMCFG4
0x11, 0x93, // MDMCFG3
0x12, 0x03, // MDMCFG2
0x15, 0x34, // DEVIATN
0x16, 0x01, // MCSM2
0x17, 0x30, // MCSM1: always go into IDLE
0x18, 0x18, // MCSM0
0x19, 0x16, // FOCCFG
0x1B, 0x43, // AGCTRL2
//0x1E, 0x28, // ..WOREVT1: tEVENT0 = 50 ms, RX timeout = 390 us
//0x1F, 0xA0, // ..WOREVT0:
//0x20, 0xFB, // ..WORCTRL: EVENT1 = 3, WOR_RES = 0
0x21, 0x56, // FREND1
0x25, 0x00,
0x26, 0x11, // FSCAL0
0x2D, 0x35, // TEST1
0x3E, 0xC3, // ?
};
for (uint8_t i=0; i<sizeof(initVal); i++) { // write init value to TRX868
writeReg(pgm_read_byte(&initVal[i++]), pgm_read_byte(&initVal[i]));
}
#if defined(CC_DBG)
Serial << '2';
#endif
cmdStrobe(CC1101_SCAL); // calibrate frequency synthesizer and turn it off
while (readReg(CC1101_MARCSTATE, CC1101_STATUS) != 1) { // waits until module gets ready
_delay_us(1);
#if defined(CC_DBG)
Serial << '.';
#endif
}
#if defined(CC_DBG)
Serial << '3';
#endif
writeReg(CC1101_PATABLE, PA_MaxPower); // configure PATABLE
cmdStrobe(CC1101_SRX); // flush the RX buffer
cmdStrobe(CC1101_SWORRST); // reset real time clock
#if defined(CC_DBG)
Serial << F(" - ready\r\n");
#endif
}
/**
* wakeUp
*
* Wake up CC1101 from Power Down state
*/
void CC1101::wakeUp(void)
{
cc1101_Select(); // Select CC1101
wait_Miso(); // Wait until MISO goes low
cc1101_Deselect(); // Deselect CC1101
}