size_t HardwareSerial::write(uint8_t c)
{
int i = (_tx_buffer->head + 1) % SERIAL_BUFFER_SIZE;
// If the output buffer is full, there's nothing for it other than to
// wait for the interrupt handler to empty it a bit
// ???: return 0 here instead?
while (i == _tx_buffer->tail)
;
_tx_buffer->buffer[_tx_buffer->head] = c;
_tx_buffer->head = i;
sbi(*_ucsrb, _udrie);
return 1;
}
size_t HardwareSerial::write9(uint16_t c, bool cmd)
{
int i = (_tx_buffer->head + 1) % SERIAL_BUFFER_SIZE;
// If the output buffer is full, there's nothing for it other than to
// wait for the interrupt handler to empty it a bit
// ???: return 0 here instead?
while (i == _tx_buffer->tail)
;
//we add the leading 1 to be sure
_tx_buffer->buffer[_tx_buffer->head] = (cmd ? c|0x100 : c);
_tx_buffer->head = i;
sbi(*_ucsrb, _udrie);
return 1;
}
size_t BiscuitSerial::write(uint8_t c)
{
int i = (tx_buffer.head + 1) % SERIAL_BUFFER_SIZE;
// If the output buffer is full, there's nothing for it other than to
// wait for the interrupt handler to empty it a bit
// ???: return 0 here instead?
while (i == tx_buffer.tail)
;
tx_buffer.buffer[tx_buffer.head] = c;
tx_buffer.head = i;
sbi(UCSR0B, UDRIE0);
return 1;
}
/* ADC_INIT: initialize the A/D to access the photo sensor */
char TOS_COMMAND(ADC_INIT)(){
#ifndef FULLPC
sbi(DDRB, 4);
sbi(PORTB, 4);
sbi(DDRB, 3);
sbi(PORTB, 3);
sbi(DDRD, 5);
sbi(PORTD, 5);
outp(0x07, ADCSR);
cbi(ADCSR, ADSC);
sbi(ADCSR, ADIE);
sbi(ADCSR, ADEN);
#else
printf("ADC initialized.\n");
#endif
return 0;
}
uint8_t i2cMasterSendNI(uint8_t deviceAddr, uint8_t length, uint8_t const *data)
{
uint8_t retval = I2C_OK;
// disable TWI interrupt
cbi(TWCR, TWIE);
// send start condition
i2cSendStart();
i2cWaitForComplete();
// send device address with write
i2cSendByte(deviceAddr & 0xFE);
i2cWaitForComplete();
// check if device is present and live
if (inb(TWSR) == TW_MT_SLA_ACK)
{
// send data
while (length)
{
i2cSendByte(*data++);
i2cWaitForComplete();
length--;
}
}
else
{
// device did not ACK it's address,
// data will not be transferred
// return error
retval = I2C_ERROR_NODEV;
}
// transmit stop condition
// leave with TWEA on for slave receiving
i2cSendStop();
while (!(inb(TWCR) & BV(TWSTO)))
;
// enable TWI interrupt
sbi(TWCR, TWIE);
return retval;
}
int analogRead(uint8_t pin)
{
uint8_t low, high;
// set the analog reference (high two bits of ADMUX) and select the
// channel (low 4 bits). this also sets ADLAR (left-adjust result)
// to 0 (the default).
// ADMUX = (analog_reference << 6) | (pin & 0x3f); // more MUX
// sapo per tiny45
//ADMUX = pin & 0x3f;
// from tod
// map arduino "pin" to ADC MUX value
// from Table 20-3 in ATtiny45 datasheet
if( pin == PB5 ) {
ADMUX = 0x00;
} else if( pin == PB2 ) {
ADMUX = 0x01;
} else if( pin == PB4 ) {
ADMUX = 0x02;
} else if( pin == PB3 ) {
ADMUX = 0x03;
} else {
ADMUX = pin; // in case people want to select temp sensor or whatever
}
// without a delay, we seem to read from the wrong channel
//delay(1);
// start the conversion
sbi(ADCSRA, ADSC);
// ADSC is cleared when the conversion finishes
while (bit_is_set(ADCSRA, ADSC));
// we have to read ADCL first; doing so locks both ADCL
// and ADCH until ADCH is read. reading ADCL second would
// cause the results of each conversion to be discarded,
// as ADCL and ADCH would be locked when it completed.
low = ADCL;
high = ADCH;
// combine the two bytes
return (high << 8) | low;
}
void net_receive()
{
if (!com_check())
return;
com_connect();
com_set_command(CMD_MA_REQ);
com_config(BUS_INPUT);
uint8_t uiLen =0;
com_receive_chunk(&uiLen);
com_disconnect();
cDataReq = 0;
sbi(GICR,INT0);
uiLen = parser_parse();
net_send(uiLen);
}
// read a single byte from address and return it as a byte
uint8_t i2cReadRegister(uint8_t i2c_7bit_address, uint8_t address)
{
uint8_t data;
i2cSendStart();
i2cSendWriteAddress(i2c_7bit_address);
i2cSendData(address); // write register address
i2cSendRepeatedStart(); // repeated start
i2cSendReadAddress(i2c_7bit_address);
i2cReceiveByte(0);
data = i2cGetReceivedByte(); // Get result
i2cSendStop();
cbi(TWCR, TWEN); // Disable TWI
sbi(TWCR, TWEN); // Enable TWI
return data;
}
void SlaveRtu::init() {
_de.set(LOW);
_re.set(LOW);
#if defined(TCCR2A) && defined(TCCR2B)
TIMER_CS(TCCR2B, 2, TIMER_WITHOUT_EXT_CLK_CS_128);
TIMER_3BIT_WAVEFORM(2, TIMER_3BIT_WAVEFORM_CTC);
// (11/19200) * 3.5 / (1/(16000000/128))
OCR2A = 250;
sbi(TIMSK2, OCIE2A);
#else
#error Timer 2 reg not found
#endif
_usart.begin(19200, SERIAL_8E1);
}
// Right now, PWM output only works on the pins with
// hardware support. These are defined in the appropriate
// pins_*.c file. For the rest of the pins, we default
// to digital output.
void analogWrite(uint8_t pin, int val)
{
// We need to make sure the PWM output is enabled for those pins
// that support it, as we turn it off when digitally reading or
// writing with them. Also, make sure the pin is in output mode
// for consistenty with Wiring, which doesn't require a pinMode
// call for the analog output pins.
pinMode(pin, OUTPUT);
if (digitalPinToTimer(pin) == TIMER1A) {
// connect pwm to pin on timer 1, channel A
sbi(TCCR1A, COM1A1);
// set pwm duty
OCR1A = val;
} else if (digitalPinToTimer(pin) == TIMER1B) {
// connect pwm to pin on timer 1, channel B
sbi(TCCR1A, COM1B1);
// set pwm duty
OCR1B = val;
} else if (digitalPinToTimer(pin) == TIMER0A) {
if (val == 0) {
digitalWrite(pin, LOW);
} else {
// connect pwm to pin on timer 0, channel A
sbi(TCCR0A, COM0A1);
// set pwm duty
OCR0A = val;
}
} else if (digitalPinToTimer(pin) == TIMER0B) {
if (val == 0) {
digitalWrite(pin, LOW);
} else {
// connect pwm to pin on timer 0, channel B
sbi(TCCR0A, COM0B1);
// set pwm duty
OCR0B = val;
}
} else if (digitalPinToTimer(pin) == TIMER2A) {
// connect pwm to pin on timer 2, channel A
sbi(TCCR2A, COM2A1);
// set pwm duty
OCR2A = val;
} else if (digitalPinToTimer(pin) == TIMER2B) {
// connect pwm to pin on timer 2, channel B
sbi(TCCR2A, COM2B1);
// set pwm duty
OCR2B = val;
} else if (val < 128)
digitalWrite(pin, LOW);
else
digitalWrite(pin, HIGH);
}
// functions
void i2cInit(void) {
#ifdef I2C_USE_INT_PULLUP_RESISTORS
// set pull-up resistors on I2C bus pins
#if (defined (__AVR_ATmega64C1__) || defined (__AVR_ATmega64M1__) ||\
defined (__AVR_ATmega128__) || defined (__AVR_ATmega1280__) ||\
defined (__AVR_ATmega1281__) || defined (__AVR_ATmega1284P__) ||\
defined (__AVR_ATmega128RFA1__) || defined(__AVR_ATmega2560__))
sbi(PORTD, 0); // i2c SCL on ATmega128,64
sbi(PORTD, 1); // i2c SDA on ATmega128,64
#elif (defined (__AVR_ATmega8__) || defined (__AVR_ATmega8A__))
sbi(PORTC, 5); // i2c SCL on ATmega8
sbi(PORTC, 4); // i2c SDA on ATmega8
#else
sbi(PORTC, 0); // i2c SCL on ATmega163,323,16,32,etc
sbi(PORTC, 1); // i2c SDA on ATmega163,323,16,32,etc
#endif
#endif
// clear SlaveReceive and SlaveTransmit handler to null
i2cSlaveReceive = 0;
i2cSlaveTransmit = 0;
i2cStopHandler = 0;
// set i2c bit rate to 100KHz
i2cSetBitrate(100);
// enable TWI (two-wire interface)
sbi(TWCR, TWEN);
// set state
I2cState = I2C_IDLE;
// enable TWI interrupt and slave address ACK
sbi(TWCR, TWIE);
sbi(TWCR, TWEA);
//outb(TWCR, (inb(TWCR)&TWCR_CMD_MASK)|BV(TWINT)|BV(TWEA));
// enable interrupts
sei();
}
int main() {
/* reset the ports, and set the directions */
SET_PIN_DIRECTIONS();
TOS_CALL_COMMAND(MAIN_SUB_POT_INIT)(0);
TOS_sched_init();
TOS_CALL_COMMAND(MAIN_SUB_INIT)();
TOS_CALL_COMMAND(MAIN_SUB_START)();
dbg(DBG_BOOT,("mote initialized.\n"));
while(1){
while(!TOS_schedule_task()) { };
sbi(MCUCR, SE);
asm volatile ("sleep" ::);
asm volatile ("nop" ::);
asm volatile ("nop" ::);
}
}
void timer2A_enable(uint16_t interrupts_per_sec) {
unsigned char sreg;
sreg = SREG;
cli();
cbi(TIMSK2, OCIE2A);
TCNT2=0;
TCCR2A=(1<<WGM21);
TCCR2B=(1<<CS21); // fclock/8, CTC mode
TCNT2=0;
OCR2A=(uint16_t)((uint32_t)(F_CPU/8)/(uint32_t)interrupts_per_sec);
sbi(TIMSK2, OCIE2A);
SREG = sreg;
}
//This init routine actually begins operation (as soon as interrupts get enabled)
//LED_ENCODE is OC2B
void init_irtx()
{
//TIMER 2: 40kHz 50% Square Wave Generator
cbi(PORTD, 3); //so that disabled OCR2B = 0 on output
cbi(ASSR, 5); //clock from MCU mainline clock (16MHz)
enable_output_irclock();
TCCR2B = B8(00000001); //enable timer with no prescaler = 16MHz
OCR2A = 200; //toggle after 12.5mS -> 25mS period = 40kHz freq (16MHz clock)
TIMSK2 = B8(00000000); //no interrupts from this timer
TIFR2; //Timer interrupt flag register
sbi(DDRD, 3); //OCR2B as output
//TIMER 1: Data encoding clock - pulse width determination
TCCR1A = B8(00000000); //Normal counter
TCCR1B = B8(00000100); //Divide by 256 (16MHz/256 = 62.5kHz)
TCCR1C = B8(00000000); //No force compare matches
}
void uartswSendByte(u08 data)
{
// wait until uart is ready
while(UartswTxBusy);
// set busy flag
UartswTxBusy = TRUE;
// save data
UartswTxData = data;
// set number of bits (+1 for stop bit)
UartswTxBitNum = 9;
// set the start bit
cbi(UARTSW_TX_PORT, UARTSW_TX_PIN);//changed to cbi -JGM
// schedule the next bit
outb(OCR2, inb(TCNT2) + UartswBaudRateDiv);
// enable OC2 interrupt
sbi(TIMSK, OCIE2);
}
// enable and initialize the software uart
void uartswInit(void)
{
// initialize the buffers
uartswInitBuffers();
// initialize the ports
sbi(UARTSW_TX_DDR, UARTSW_TX_PIN);
#ifdef UARTSW_INVERT
cbi(UARTSW_TX_PORT, UARTSW_TX_PIN);
#else
sbi(UARTSW_TX_PORT, UARTSW_TX_PIN);
#endif
cbi(UARTSW_RX_DDR, UARTSW_RX_PIN);
#ifdef UARTSW_INVERT
cbi(UARTSW_RX_PORT, UARTSW_RX_PIN);
#else
sbi(UARTSW_RX_PORT, UARTSW_RX_PIN);
#endif
// initialize baud rate
uartswSetBaudRate(9600);
// setup the transmitter
UartswTxBusy = FALSE;
// disable OC0A interrupt
cbi(TIMSK0, OCIE0A);
// attach TxBit service routine to OC0A
timerAttach(TIMER0OUTCOMPAREA_INT, uartswTxBitService);
// setup the receiver
UartswRxBusy = FALSE;
// disable 0C0B interrupt
cbi(TIMSK0, OCIE0B);
// attach RxBit service routine to OC0B
timerAttach(TIMER0OUTCOMPAREB_INT, uartswRxBitService);
// INT1 trigger on rising/falling edge
#ifdef UARTSW_INVERT
sbi(EICRA, ISC11);
sbi(EICRA, ISC10);
#else
sbi(EICRA, ISC11);
cbi(EICRA, ISC10);
#endif
// enable INT1 interrupt
sbi(EIMSK, INT1);
// turn on interrupts
sei();
}
U08 TxPacket(U08 ID, U08 Instruction, U08 ParameterLength)
{
U08 Count,CheckSum,PacketLength;
TxBuffer[0] = 0xff;
TxBuffer[1] = 0xff;
TxBuffer[2] = ID;
TxBuffer[3] = ParameterLength+2;
TxBuffer[4] = Instruction;
for( Count = 0; Count < ParameterLength ; Count++ )
{
TxBuffer[Count+5] = Parameter[Count];
}
CheckSum = 0;
PacketLength = ParameterLength +4+2;
for( Count = 2; Count < PacketLength-1; Count++ ) //except 0xff,checksum
{
CheckSum += TxBuffer[Count];
}
TxBuffer[Count] = ~CheckSum;
RS485_TXD;
for(Count = 0; Count < PacketLength; Count++)
{
sbi(UCSR0A,6); //SET_TXD0_FINISH;
Uart_Putch(UART0,(TxBuffer[Count]));
}
while(!CHECK_TXD0_FINISH); //Wait until TXD Shift register empty
RS485_RXD;
return(PacketLength);
}
//Plays the loser sounds
void play_loser(void)
{
//printf("You failed!\n", 0);
sbi(LED_RED_PORT, LED_RED);
sbi(LED_GREEN_PORT, LED_GREEN);
toner('0', 255);
sbi(LED_BLUE_PORT, LED_BLUE);
sbi(LED_YELLOW_PORT, LED_YELLOW);
toner('0', 255);
sbi(LED_RED_PORT, LED_RED);
sbi(LED_GREEN_PORT, LED_GREEN);
toner('0', 255);
sbi(LED_BLUE_PORT, LED_BLUE);
sbi(LED_YELLOW_PORT, LED_YELLOW);
toner('0', 255);
}
void init(void)
{
//Make outputs low
cbi(PWM_PORT, PWM_BIT);
cbi(SD_PORT, PWM_BIT);
//Make outputs outputs
sbi(PWM_DDR, PWM_BIT);
//Pull-up swithces
sbi(ESTOP_PORT, ESTOP_BIT);
sbi(BRAKE_PORT, BRAKE_BIT);
//RGB Outputs
sbi(RGB_DDR, RED);
sbi(RGB_DDR, GREEN);
sbi(RGB_DDR, BLUE);
//RGB Off
sbi(RGB_PORT, RED);
sbi(RGB_PORT, GREEN);
sbi(RGB_PORT, BLUE);
//Initialise the ADC
a2dInit();
//Initialise timer 1
timer1Init();
timer1SetPrescaler(TIMER_CLK_DIV1);
timer1PWMInitICR(TOP_COUNT); //Enable PWM with top count
timer1PWMAOn(); //Turn PWM on
rgb(green);
sei(); //Enable interupts
}
u08 ax88796Read(u08 address)
{
u08 data;
// assert the address
AX88796_ADDRESS_PORT = address | (AX88796_ADDRESS_PORT&~AX88796_ADDRESS_MASK);
// assert read
cbi(AX88796_CONTROL_PORT, AX88796_CONTROL_READPIN);
nop();
nop();
// read in the data
data = AX88796_DATA_PIN;
// negate read
sbi(AX88796_CONTROL_PORT, AX88796_CONTROL_READPIN);
return data;
}
/*--------------------------------------------------------------------------------------------------*/
int CheckVoltage(void){
uint8_t low, high;
InitADC12(); // make ADC12 input, disable pull up
ADCSRB = 0x08; // make ADC on PK4, ADC12
ADMUX = 0x44;
// start the conversion
sbi(ADCSRA, ADSC);
// ADSC is cleared when the conversion finishes
while (bit_is_set(ADCSRA, ADSC));
// we have to read ADCL first; doing so locks both ADCL
// and ADCH until ADCH is read. reading ADCL second would
// cause the results of each conversion to be discarded,
// as ADCL and ADCH would be locked when it completed.
low = ADCL;
high = ADCH;
//combine the two bytes
return (high << 8) | low;
}
//Due to a bug the two control lines are shorted together. This precludes any power setting except HIGH from functioning.
extern void iris_tx(uint8_t cmd){
switch(cmd){
case LOW:
//for future use
break;
case MED:
//for future use
break;
case HIGH:
sbi(PORTC, 2);
break;
case OFF:
//fall through to default
default:
//OFF
cbi(PORTC, 2);
cbi(PORTC, 1);
} //switch
}
void cs8900Write(unsigned char address, unsigned char data)
{
// assert the address
outb(CS8900_ADDRESS_PORT, address | (inb(CS8900_ADDRESS_PORT)&~CS8900_ADDRESS_MASK));
// set data bus as output
outb(CS8900_DATA_DDR, 0xFF);
// place data on bus
outb(CS8900_DATA_PORT, data);
// clock write pin
cbi(CS8900_CONTROL_PORT, CS8900_CONTROL_WRITEPIN);
nop();
nop();
nop();
nop();
sbi(CS8900_CONTROL_PORT, CS8900_CONTROL_WRITEPIN);
// set data bus back to input with pullups enabled
outb(CS8900_DATA_DDR, 0x00);
outb(CS8900_DATA_PORT, 0xFF);
}
void HardwareSerial::_tx_udr_empty_irq(void)
{
// If interrupts are enabled, there must be more data in the output
// buffer. Send the next byte
unsigned char c = _tx_buffer[_tx_buffer_tail];
_tx_buffer_tail = (_tx_buffer_tail + 1) % SERIAL_TX_BUFFER_SIZE;
*_udr = c;
// clear the TXC bit -- "can be cleared by writing a one to its bit
// location". This makes sure flush() won't return until the bytes
// actually got written
sbi(*_ucsra, TXC0);
if (_tx_buffer_head == _tx_buffer_tail) {
// Buffer empty, so disable interrupts
cbi(*_ucsrb, UDRIE0);
}
}
//------------------------------------------------------------------------------
void PIN_Setup()
{
outb(GIMSK, 0); // disable external interupts
outb(MCUCR, 0);
sbi(TIMSK, TOIE1); // Enable timer1 interrupt
// Timer 1
outb(TCCR1A, 0);
outb(TCCR1B, (_BV(CS12)) | (_BV(CS10))); // Prescaler /1024
outb(TCNT1H, TI1_H); // Load counter value hi
outb(TCNT1L, TI1_L); // Load counter value lo
IO_Init();
RS232_Init();
Event = EV_NOTHING;
sei();
//MCUCR = (0<<ISC11)|(1<<ISC10)|(0<<ISC01)|(1<<ISC00);
}
void detect_address(void)
{
int pulseCount=4;
while(pulseCount>=0)
{
TCNT0=0;
while(TCNT0<30);
if(bit_is_clear(PIND,2))
{
sbi(PORTC,pulseCount);
pulseCount--;
}
else
{
cbi(PORTC,pulseCount);
pulseCount--;
}
}
}
/** @brief Write a Command to the RFM01 over SPI
A command is clocked out to the RFM01 one bit at a time.
All RF01 commands are 16 bit but the second parameter is kept for code
compatibility with the other RF chips.
At the same time a result is clocked back in one bit at a time. The result
is returned as a 16 bit word.
Each bit of output status is available before the clock pulse. After
the last clock pulse the first FIFO data is presented.
For the RFM01 receiver module the returned result is meaningless except
for the status read command which is 16 bits.
Parameter: 16 or 8 bit command
Parameter: length of command (8 or 16)
Return: Value returned from the SPI interface
*/
uint16_t writeCMD(uint16_t command, uint8_t n)
{
if (n < 16) /* For 8 bit commands */
command <<= (16-n); /* Shift command byte to upper byte */
uint16_t result = 0; /* Holds the received SDI */
cbi(CS_PORT,nSEL); /* Set CS LOW */
while(n--) /* Send All Bits MSB First */
{
result <<= 1; /* Shift left for next bit to receive */
result |= ((inb(SPI_PIN) >> SDO) & 1); /* add received bit to result */
if (command & 0x8000)
writeSPI(1); /* Write 1 via SDI */
else
writeSPI(0); /* Write 0 via SDI */
command <<= 1; /* Shift left for next bit to send */
}
sbi(CS_PORT,nSEL); /* CS HIGH - Finished Sending Command */
return result;
}
void usInit(void)
{
// Initialize ultrasonics
sbi(DDRD, 3); // 40kHz freq. generator output
// Set up 40khz freq. generator on Timer/Counter2
// (8-bit resolution will suffice up to 20MHz system clock)
OCR2A = F_CPU/(2*SOUND_FREQ); // Toggle twice to make a 40kHz pulse
TIMSK2 = _BV(OCIE2A); // Enable interrupt
TCCR2A = _BV(COM2B0) // Toggle OC2B/PD3 on compare match
| _BV(WGM21); // CTC mode, count to OCR2A and start over
TCCR2B = _BV(CS20); // No clock divider
// Set up interrupt for echo frequency counter
EICRA = _BV(ISC01); // Falling edge on INT0 pin generates interrupt
// Don't enable interrupt here: it's done in
// the burst loop interrupt routine.
}
//Writes a byte of data to the LCD.
void writeLcd(u08 data)
{
//Reverse the bit order of the data, due to LCD connections to data bus being backwards.
//The variable has local scope, so this can be done before the interrupts are disabled.
REVERSE(data);
//Disable interrupts to prevent the servo ISR (which shares the same data bus)
//from interrupting in the middle of the sequence and messing with the bus.
cli();
//set the LCD's E (Enable) line high, so it can fall later
sbi(PORTD, 6);
//write the data to the bus
PORTC = data;
//delay to allow the data to fully propagate to the LCD
delayUs(1);
//set the LCD's E (Enable) line low to latch in the data
cbi(PORTD, 6);
//re-enable interrupts
sei();
}
void ax88796Write(u08 address, u08 data)
{
// assert the address
AX88796_ADDRESS_PORT = address | (AX88796_ADDRESS_PORT&~AX88796_ADDRESS_MASK);
// set data bus as output and place data on bus
AX88796_DATA_DDR = 0xFF;
AX88796_DATA_PORT = data;
// clock write pin
cbi(AX88796_CONTROL_PORT, AX88796_CONTROL_WRITEPIN);
nop();
nop();
sbi(AX88796_CONTROL_PORT, AX88796_CONTROL_WRITEPIN);
// set data bus back to input with pullups enabled
AX88796_DATA_DDR = 0x00;
AX88796_DATA_PORT = 0xFF;
}
