int main (void)
{
uint16_t heading;
int16_t pitch, roll;
uint16_t headingIntegerPart, headingFractionPart;
int16_t pitchIntegerPart, pitchFractionPart;
int16_t rollIntegerPart, rollFractionPart;
// initialize the hardware stuff we use
InitTimer ();
InitUART ();
i2c_init ();
fdevopen (UART0_PutCharStdio, UART0_GetCharStdio);
// set the LED port for output
LED_DDR |= LED_MASK;
printf ("\nHoneywell HMC6343 I2C Compass Test\n\n");
// Flash the LED for 1/2 a second...
turnOnLED ();
ms_spin (500);
turnOffLED ();
while (1) // outer loop is once every 250 ms (more or less)
{
// send the HEADING command to the compass
i2c_start_wait (COMPASS_ADDRESS_WRITE);
i2c_write (COMPASS_HEADING_COMMAND);
// now read the response
i2c_rep_start (COMPASS_ADDRESS_READ);
heading = (i2c_readAck () * 256) + i2c_readAck ();
pitch = (i2c_readAck () * 256) + i2c_readAck ();
roll = (i2c_readAck () * 256) + i2c_readNak ();
i2c_stop ();
headingIntegerPart = heading / 10;
headingFractionPart = heading - (headingIntegerPart * 10);
pitchIntegerPart = pitch / 10;
pitchFractionPart = pitch - (pitchIntegerPart * 10);
if (pitchFractionPart < 0)
pitchFractionPart *= -1;
rollIntegerPart = roll / 10;
rollFractionPart = roll - (rollIntegerPart * 10);
if (rollFractionPart < 0)
rollFractionPart *= -1;
printf ("Heading: %3d.%1d Pitch: %3d.%1d Roll: %3d.%1d\n", headingIntegerPart, headingFractionPart, pitchIntegerPart, pitchFractionPart, rollIntegerPart, rollFractionPart);
turnOnLED ();
ms_spin (100);
turnOffLED ();
ms_spin (150);
}
// we'll never get here...
return 0;
}
void _rtc_get_date_dev(Date* tm, uint8_t year_offset, uint8_t addr)
{
uint8_t c;
i2c_start_wait(addr+RTC_DEV_WRITE_ADDRESS); // set device address and write mode
i2c_write(0x02); // write memory address = 0x02
i2c_rep_start(addr+RTC_DEV_READ_ADDRESS); // set device address and read mode
c = i2c_readAck(); // 0x02
tm->seconds = rtc_bcd_to_binary(c);
c = i2c_readAck(); // 0x03
tm->minutes = rtc_bcd_to_binary(c);
// Throw away AMPM information
i2c_readAck(); // 0x04
c = i2c_readAck(); // 0x05
tm->day = rtc_bcd_to_binary(c & 0x3F);
tm->year = ((rtc_bcd_to_binary(c) >> 6) & 0x3) + 1970 + year_offset;
c = i2c_readNak(); // 0x06: don't acknowledge the last byte
// Throw away day of week information
//tm->dayOfWeek = ((c >> 5) & 0x7);
tm->month = (c & 0x1F);
i2c_stop(); // stop i2c bus
}
void IR_MESSUNG(void)
{
uint8_t Anzahl=0;
uint16_t Durchschnitt=0;
INTERRUPTS_OFF
i2c_start(0x10 + I2C_WRITE);
i2c_write(0x49);
i2c_stop();
i2c_start(0x10 + I2C_READ);
IR_DIRECTION = i2c_readAck();
IR_S1 = i2c_readAck();
IR_S2 = i2c_readAck();
IR_S3 = i2c_readAck();
IR_S4 = i2c_readAck();
IR_S5 = i2c_readNak();
i2c_stop();
INTERRUPTS_ON
if(IR_S1>10)
{
Anzahl++;
Durchschnitt=Durchschnitt+IR_S1;
}
if(IR_S2>10)
{
Anzahl++;
Durchschnitt=Durchschnitt+IR_S2;
}
if(IR_S3>10)
{
Anzahl++;
Durchschnitt=Durchschnitt+IR_S3;
}
if(IR_S4>10)
{
Anzahl++;
Durchschnitt=Durchschnitt+IR_S4;
}
if(IR_S5>10)
{
Anzahl++;
Durchschnitt=Durchschnitt+IR_S5;
}
BALL_ENTFERNUNG=Durchschnitt/Anzahl;
}
//Read the compensation pixel 16 bit data
int readCPIX_MLX90620()
{
i2c_start_wait(MLX90620_WRITE);
i2c_write(CMD_READ_REGISTER); //Command = read register
i2c_write(0x91);
i2c_write(0x00);
i2c_write(0x01);
i2c_rep_start(MLX90620_READ);
byte cpixLow = i2c_readAck(); //Grab the two bytes
byte cpixHigh = i2c_readAck();
i2c_stop();
return ( (int)(cpixHigh << 8) | cpixLow);
}
void MLX90614::read() {
int data_low = 0;
int data_high = 0;
i2c_start_wait(_device+I2C_WRITE); //send start condition and write bit
i2c_write(0x07); //send command for device to action
i2c_rep_start(_device+I2C_READ); //send repeated start condition, device will ack
data_low = i2c_readAck(); //Read 1 byte and then send ack
data_high = i2c_readAck(); //Read 1 byte and then send ack
i2c_readNak(); //Read error check byte and send Nack to tell device no more data to send
i2c_stop(); //Release bus, end transaction
// This masks off the error bit of the high byte, then moves it left 8 bits and adds the low byte.
_tempData = ((double)(((data_high & 0x007F) << 8) + data_low) * _tempFactor)-0.01;
}
/*
get temperature (16 bit) from thermometer and stores in array
input: none
output: none
*/
void therm_getTemp16bit(void)
{
// send read temperature command
if(i2c_start(THERM_ADDR+I2C_WRITE))
{
// start condition failed
i2c_stop();
error(1);
}
else
{
// start condition ok, device accessible
i2c_write(THERM_READ_TEMP);
}
//send repeated start to begin reading temperature
if(i2c_rep_start(THERM_ADDR+I2C_READ))
{
// start condition failed
i2c_stop();
error(1);
}
else
{
// start condition ok, device accessible
// read MSB
temp_reading[TEMP_MSB] = i2c_readAck();
// read LSB
temp_reading[TEMP_LSB] = i2c_readNak();
i2c_stop();
}
}
void readBlock(uint8_t reg, int16_t *data){
i2c_start(MPUI2CADD+I2C_WRITE);
i2c_write(reg); // register to read
i2c_rep_start(MPUI2CADD+I2C_READ); // read a byte
*data = (i2c_readAck()<<8);
*data |= (i2c_readAck());
data++;
*data = (i2c_readAck()<<8);
*data |= i2c_readAck();
data++;
*data = (i2c_readAck()<<8);
*data |= i2c_readNak();
i2c_stop();
}
// Lese MD49 Daten (Encodervalues, Mode, Acceleration, etc..)
// von Slave_Drivecontrol und speichere sie in Array MD49data
void readMD49data(void){
uint8_t i;
// Daten von I2C- Slave lesen im Master-Receiver-Mode
if(!(i2c_start(SLAVE_ADRESSE+I2C_WRITE))) // Slave bereit zum lesen?
{
i2c_write(15); // Buffer Startadresse zum Auslesen
i2c_rep_start(SLAVE_ADRESSE+I2C_READ); // Lesen beginnen
for (i=0;i<18;i++) // Empfangene Daten in Array schreiben
{
if ((i) < 17)
{
MD49data[i]=i2c_readAck(); // Bytes lesen...
}
else
{
MD49data[i]=i2c_readNak(); // letztes Byte lesen...
}
}
i2c_stop(); // Zugriff beenden
}
else
{
// /* Fehlerbehandlung... */
}
}
uint8_t getIR(void)
{
uint16_t tempdata = 0;
uint8_t returnvar = 0;
for(uint8_t i = 0; i < NUMBER_OF_MLX; i++)
{
if((i2c_start(pgm_read_byte(&mlx90614_i2c_addresses[i])) == 0) &&
(i2c_write(I2C_REG_MLX90614) == 0) &&
(i2c_rep_start(pgm_read_byte(&mlx90614_i2c_addresses[i]) + I2C_READ) == 0))
{
for(uint8_t i = 0; i<2; i++)
i2cbuf[i] = i2c_readAck();
i2cbuf[2] = i2c_readNak();
if(i2c_stop() != 0)
returnvar |= (1<<i);
else
returnvar &= ~(1<<i);
// This masks off the error bit of the high byte, then moves it left 8 bits and adds the low byte.
tempdata = (((i2cbuf[1] & 0x007F) << 8) + i2cbuf[0]);
tempdata = ((tempdata * 2)-1);
mlx90614[i].is = (tempdata - 27315);
}
else returnvar |= (1<<i);
}
return returnvar;
}
// Free returned memory!
uint8_t *memGetBytes(uint32_t address, uint8_t length) {
// We could use the High-Speed Mode of the FM24V10 here, but we don't, right now...
uint8_t addA, addB, memAddress = MEMTWIADDRESS, i, *ret;
if (address >= 65536) {
// Address needs more than 16 bits, we have to set the PAGE bit in i2c address
memAddress |= 2;
}
addA = (address & 0xFF00) >> 8;
addB = address & 0xFF;
ret = (uint8_t *)malloc(length); // Allocate memory for values read
if (ret == NULL) {
serialWriteString(getString(24));
return NULL;
}
if (i2c_start(memAddress | I2C_WRITE) == 0) {
i2c_write(addA);
i2c_write(addB);
i2c_rep_start(memAddress | I2C_READ);
for (i = 0; i < (length - 1); i++) {
ret[i] = i2c_readAck();
}
ret[length - 1] = i2c_readNak();
i2c_stop();
return ret;
} else {
return NULL;
}
}
//Reads the PTAT data from the MLX
//Returns an unsigned int containing the PTAT
unsigned int readPTAT_MLX90620()
{
i2c_start_wait(MLX90620_WRITE);
i2c_write(CMD_READ_REGISTER); //Command = read PTAT
i2c_write(0x90); //Start address is 0x90
i2c_write(0x00); //Address step is 0
i2c_write(0x01); //Number of reads is 1
i2c_rep_start(MLX90620_READ);
byte ptatLow = i2c_readAck(); //Grab the lower and higher PTAT bytes
byte ptatHigh = i2c_readAck();
i2c_stop();
return( (unsigned int)(ptatHigh << 8) | ptatLow); //Combine bytes and return
}
void classic_maj_data(CLASSIC * classic) {
u8 i;
u8 data[6];
//reset le pointeur de lecture
i2c_start(0xa4);//adresse classic en écriture
i2c_write(0);
i2c_stop();
_delay_us(200);//minimum observé fonctionnel : _delay_us(150);
i2c_start_wait(0xa5);//adresse en lecture
for(i=0; i<5; i++) {
data[i]=i2c_readAck();
}
data[5]=i2c_readNak();//le dernier caractère lu ne doit pas avoir d'acknowledge
i2c_stop();
/*for(i=0;i<6;i++){
phex(data[i]);
print(" ");
}*/
classic->bouton1=~data[4];
classic->bouton2=~data[5];
classic->rx=(data[2]>>7)+(data[1]>>(6-1))+(data[0]>>(6-3));
classic->ry=data[2]&0x1f;
classic->lx=data[0]&0x3f;
classic->ly=data[1]&0x3f;
classic->lt=(data[3]>>5)+((data[2]&0x60)>>(5-3));
classic->rt=data[1]&0x3f;
}
//Reads the current configuration register (2 bytes) from the MLX
//Returns two bytes
unsigned int readConfig_MLX90620()
{
i2c_start_wait(MLX90620_WRITE); //The MLX configuration is in the MLX, not EEPROM
i2c_write(CMD_READ_REGISTER); //Command = read configuration register
i2c_write(0x92); //Start address
i2c_write(0x00); //Address step of zero
i2c_write(0x01); //Number of reads is 1
i2c_rep_start(MLX90620_READ);
byte configLow = i2c_readAck(); //Grab the two bytes
byte configHigh = i2c_readAck();
i2c_stop();
return( (unsigned int)(configHigh << 8) | configLow); //Combine the configuration bytes and return as one unsigned int
}
//Read raw data to rawX, rawY and rawZ
void Gyroscope::cmr_read_rates() {
// Read order Z_MSB, Z_LSB, Y_MSB, Y_LSB, X_MSB and X_LSB
i2c_start_wait( (ADDR << 1) | I2C_WRITE ); // Start write
i2c_write(0x11); // Z_MSB register address
i2c_rep_start( (ADDR << 1) | I2C_READ ); // Start reading
//Read and combine Z_MSB and Z_LSB
rawZ = (unsigned short) ((i2c_readAck() << 8) & 0xFF00);
rawZ |= (unsigned short)(i2c_readAck() & 0x00FF);
//Read and combine Y_MSB and Y_LSB
rawY = (unsigned short) ((i2c_readAck() << 8) & 0xFF00);
rawY |= (unsigned short)(i2c_readAck() & 0x00FF);
//Read and combine X_MSB and X_LSB
rawX = (unsigned short) ((i2c_readAck() << 8) & 0xFF00);
rawX |= (unsigned short)(i2c_readNak() & 0x00FF);
i2c_stop(); //End condition
}
//Reads 64 bytes of pixel data from the MLX
//Loads the data into the irData array
void readIR_MLX90620()
{
i2c_start_wait(MLX90620_WRITE);
i2c_write(CMD_READ_REGISTER); //Command = read a register
i2c_write(0x00); //Start address = 0x00
i2c_write(0x01); //Address step = 1
i2c_write(0x40); //Number of reads is 64
i2c_rep_start(MLX90620_READ);
for(int i = 0 ; i < 64 ; i++)
{
byte pixelDataLow = i2c_readAck();
byte pixelDataHigh = i2c_readAck();
irData[i] = (int)(pixelDataHigh << 8) | pixelDataLow;
}
i2c_stop();
}
void Magnetometer::hmc_read_rates() {
// Read order Z_MSB, Z_LSB, Y_MSB, Y_LSB, X_MSB and X_LSB
i2c_start_wait( (ADDR << 1) | I2C_WRITE ); // Start write
i2c_write(REG_DATA_X_MSB); // X_MSB register address
i2c_rep_start( (ADDR << 1) | I2C_READ ); // Start reading
//Read and combine X_MSB and X_LSB
magX = (unsigned short) ((i2c_readAck() << 8) & 0xFF00) ;
magX |= (unsigned short) (i2c_readAck() & 0x00FF);
//Read and combine Y_MSB and Y_LSB
magY = (unsigned short) ((i2c_readAck() << 8) & 0xFF00) ;
magY |= (unsigned short) (i2c_readAck() & 0x00FF);
//Read and combine Z_MSB and Z_LSB
magZ = (unsigned short) ((i2c_readAck() << 8) & 0xFF00) ;
magZ |= (unsigned short) (i2c_readNak() & 0x00FF);
i2c_stop();
}
int16_t MPU6050_signed_readreg(uint8_t accel, uint8_t reg)//read signed 16 bits
{
i2c_start_wait(accel+I2C_WRITE); // set device address and write mode
i2c_write(reg); // ACCEL_OUT
i2c_rep_start(accel+I2C_READ); // set device address and read mode
char raw1 = i2c_readAck(); // read one intermediate byte
int16_t raw2 = (raw1<<8) | i2c_readNak(); // read last byte
i2c_stop();
return raw2;
}
/*=================================================================================
Reads the GY-26 digital compass and returns the degrees value in integer format.
Example:
unsigned int degrees;
degrees = pthRead();
The value in 'degrees' variable could be from 0 to 3650.
If the 'degrees' variable has the value 2568 that means 256.8 degrees.
=================================================================================*/
int pthRead (void)
{
unsigned int data;
i2c_start(I2C_GY26 + I2C_READ); // Set device address and read mode
data = (i2c_readAck() << 8); // Read the Most Significant Byte (MSB) from the GY-26 compass.
data += i2c_readNak(); // Read the Low Significant Byte (LSB) from the GY-26 compass.
i2c_stop();
return (data); //Return the degrees value (16-bit integer from 0-3650).
}
uint8_t lm75_Temp(uint8_t lm75_address)
{
uint8_t returnCode, temp;
returnCode=i2c_start(lm75_address+I2C_READ);
if(returnCode==0) {
temp = i2c_readAck();
// temp_05 =i2c_readNak(); //get 0.5 degree value, not needed
i2c_stop();
return(temp);
}
else return(255);
}
uint8_t ds3231_get_time(struct DS3231_Time *p)
{
uint8_t ack = 0;
ack |= i2c_start(DS3231_ADDRESS | I2C_WRITE);
ack |= i2c_write(DS3231_SECONDS);
ack |= i2c_rep_start(DS3231_ADDRESS | I2C_READ);
if (ack != 0)
{
i2c_stop();
return ack;
}
p->seconds_bcd = i2c_readAck();
p->minutes_bcd = i2c_readAck();
p->hours_bcd = i2c_readAck();
p->day_of_week = i2c_readAck();
p->day_of_month_bcd = i2c_readAck();
p->month_bcd = i2c_readAck();
p->year_bcd = i2c_readNak() + DS3231_YEAR_ZERO;
i2c_stop();
if ((p->month_bcd & DS3231_CENTURY) != 0)
{
p->year_bcd |= 0x0100;
p->month_bcd &= ~DS3231_CENTURY;
}
p->ampm = 0;
if ((p->hours_bcd & DS3231_12_24) != 0)
{
p->ampm = ((p->hours_bcd & DS3231_AM_PM) >> 5) + 1;
p->hours_bcd &= 0x1F;
}
//store current number of clicks at p. Return 0 on success
//if unsuccessful, return 1, no not change p
static uint8_t readClicks(uint32_t *p) {
uint32_t value = 0;
uint8_t ret;
ret = i2c_start((clicker_address<<1) + I2C_WRITE);
if (ret == 1) {
i2c_stop();
return ret;
}
ret = i2c_write(0x41); //the get clicks command
ret = i2c_rep_start((clicker_address<<1) + I2C_READ);
if (ret == 1) {
i2c_stop();
return ret;
}
ret = i2c_readAck();
value = ret;
value <<= 8;
ret = i2c_readAck();
value += ret;
value <<= 8;
ret = i2c_readAck();
value += ret;
value <<= 8;
ret = i2c_readNak();
value += ret;
i2c_stop();
*p = value;
return 0;
}
int AccelAddDataToBuffer()
{
if (i2c_start(ACCEL_ADDR+I2C_WRITE) == 0) // Try to start a read from the accelerometer
{
i2c_write((0x29)|(0b10000000));
i2c_rep_start(ACCEL_ADDR+I2C_READ);
AccelRingBuffer[0][AccelBufferPosition] = i2c_readAck();
i2c_readAck();
AccelRingBuffer[1][AccelBufferPosition] = i2c_readAck();
i2c_readAck();
AccelRingBuffer[2][AccelBufferPosition] = i2c_readNak();
i2c_stop();
if (AccelBufferPosition<9)
AccelBufferPosition++;
else
AccelBufferPosition = 0;
return 1;
}
return 0;
}
void ADXL345_updateVector(int16_t *vec)
{
uint8_t xH, xL, yH, yL, zH, zL;
// Read the acceleration registers sequentially
//i2c_start(ADXL345+I2C_WRITE); // Set device address and write mode
i2c_start_wait(ADXL345+I2C_WRITE); // Set device address and write mode
i2c_write(DATAX0); // Start reading at xH, auto increments to zL
i2c_rep_start(ADXL345+I2C_READ); // Set device address and read mode
xL = i2c_readAck();
xH = i2c_readAck();
yL = i2c_readAck();
yH = i2c_readAck();
zL = i2c_readAck();
zH = i2c_readNak();
i2c_stop();
//Data is Right justified
vec[0] = (((xH << 8) | xL)) ;
vec[1] = (((yH << 8) | yL)) ;
vec[2] = (((zH << 8) | zL)) ;
}
// i2c read
void VZ89::readmem(uint8_t reg, uint8_t buff[], uint8_t bytes) {
uint8_t i =0;
i2c_start_wait(VZ89_ADDR | I2C_WRITE);
i2c_write(reg);
i2c_rep_start(VZ89_ADDR | I2C_READ);
for(i=0; i<bytes; i++) {
if(i==bytes-1)
buff[i] = i2c_readNak();
else
buff[i] = i2c_readAck();
}
i2c_stop();
}
accel_vect
lis302dl_read_accel(void)
{
accel_vect return_value;
/*
return_value.accel_x = lis302_read_register(LIS302_REGISTER_OUT_X);
return_value.accel_y = lis302_read_register(LIS302_REGISTER_OUT_Y);
return_value.accel_z = lis302_read_register(LIS302_REGISTER_OUT_Z);
*/
i2c_start_wait(I2C_7BIT_WRITE(LIS302_I2C_ADDRESS));
i2c_write(_BV(7) | LIS302_REGISTER_OUT_X);
i2c_rep_start(I2C_7BIT_READ(LIS302_I2C_ADDRESS));
return_value.accel_x = i2c_readAck();
i2c_readAck();
return_value.accel_y = i2c_readAck();
i2c_readAck();
return_value.accel_z = i2c_readNak();
i2c_stop();
return return_value;
}
int16_t lm75_gettemp(uint8_t device){
device = LM75_BASE + (device << 1);
if(i2c_start(device + 1)){
return 100;
}else{
int16_t a = i2c_readAck() << 1;
uint8_t b = i2c_readNak() >> 7;
i2c_stop();
if(a & 256)
a |= 0xfe00;
return a+b;
//return 50*2+1;
}
}
/*******************************************************************************
* Function: nunchuck_get_data()
* Description: Fills the nunchuck_buf array with data from the nunchuck's
* registers. The data from this array may be accessed using the get functions
******************************************************************************/
void nunchuck_get_data(void)
{
i2c_start_wait(NUNCHUCK_ADDR+I2C_WRITE);
i2c_write(0x00);
i2c_stop();
_delay_ms(10);
i2c_start_wait(NUNCHUCK_ADDR+I2C_READ);
for (uint8_t i = 0 ; i < 5 ; i++)
{
nunchuck_buf[i] = nunchuck_decode_byte(i2c_readAck());
}
nunchuck_buf[5] = nunchuck_decode_byte(i2c_readNak());
i2c_stop();
}
void twi_transfer(struct twi_transfer *xfer)
{
#ifdef TWI_SYNC
twi_size_t i;
uint8_t *buffer = xfer->buffer;
if (xfer->write_size) {
i2c_start(xfer->address << 1);
for (i = 0; i < xfer->write_size; i++)
i2c_write(buffer[i]);
if (!xfer->read_size)
i2c_stop();
}
if (xfer->read_size) {
i2c_start((xfer->address << 1) | 1);
for (i = 0; i < xfer->read_size; i++) {
if (i + 1 == xfer->read_size)
buffer[i] = i2c_readNak();
else
buffer[i] = i2c_readAck();
}
i2c_stop();
}
if (xfer->callback)
xfer->callback(xfer, TWI_STAT_FINISHED);
#else /* TWI_SYNC */
uint8_t sreg;
xfer->offset = 0;
xfer->next = NULL;
xfer->status = 0;
if (!xfer->write_size)
xfer->status |= TWI_XFER_READ;
transfer_set_status(xfer, TWI_STAT_INPROGRESS);
sreg = irq_disable_save();
if (twi.last_xfer)
twi.last_xfer->next = xfer;
twi.last_xfer = xfer;
if (!twi.first_xfer) {
twi.first_xfer = xfer;
send_start_condition();
}
irq_restore(sreg);
#endif
}
// don't free returned memory! It's static mem
uint8_t *getAudioData(void) {
// We read 7 bytes from our Audio µC
uint8_t i;
if (i2c_start(TWIADDRESSAUDIO | I2C_READ) == 0) {
for (i = 0; i < 6; i++) {
ret[i] = i2c_readAck();
}
ret[6] = i2c_readNak();
i2c_stop();
return ret;
} else {
return NULL;
}
}
//Read the 256 bytes from the MLX EEPROM and setup the various constants (*lots* of math)
//Note: The EEPROM on the MLX has a different I2C address from the MLX. I've never seen this before.
void read_EEPROM_MLX90620()
{
i2c_start_wait(MLX90620_EEPROM_WRITE);
i2c_write(0x00); //EEPROM info starts at location 0x00
i2c_rep_start(MLX90620_EEPROM_READ);
//Read all 256 bytes from the sensor's EEPROM
for(int i = 0 ; i <= 255 ; i++)
eepromData[i] = i2c_readAck();
i2c_stop(); //We're done talking
varInitialization(eepromData); //Calculate a bunch of constants from the EEPROM data
writeTrimmingValue(eepromData[OSC_TRIM_VALUE]);
}