本文整理汇总了C++中TwoWire类的典型用法代码示例。如果您正苦于以下问题：C++ TwoWire类的具体用法？C++ TwoWire怎么用？C++ TwoWire使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了TwoWire类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: NunchuckInitialize
static bool NunchuckInitialize(TwoWire& interface)
{
interface.begin(); // join i2c bus as master
interface.beginTransmission(0x52);// transmit to device 0x52
interface.write((uint8_t)0xF0);// sends a zero.
interface.write((uint8_t)0x55);// sends a zero.
interface.write((uint8_t)0xFB);// sends a zero.
interface.write((uint8_t)0x00);// sends a zero.
interface.endTransmission();// stop transmitting
return 1;
}示例2: Init_Dev
// Initialise the device
void Init_Dev(TwoWire *I2C_Ptr) {
I2C = I2C_Ptr; // Pointer to the "Wire" I2C object
// Setup the ITG3200 Gyroscope
Serial.print("Setting up ITG3200 Gyroscope...");
//Set the sample rate to 100 hz
I2C->beginTransmission(GyroAddress);
I2C->write(0x15); // point to Sample Rate Divider register address
// I2C->write(0x09); // (internal sample rate of 8 kHz) / (*9* + 1) = 800 per second (800Hz)
I2C->write(0b01001111); // (internal sample rate of 8 kHz) / (*79* + 1) = 100 per second (100Hz)
I2C->endTransmission();
//Set the gyroscope scale for +/-2000 degrees per second
I2C->beginTransmission(GyroAddress);
I2C->write(0x16); // point to DLPF and FS register address (0x16)
I2C->write(0b00011000); // set Full Scale range (+/-2000deg/sec) and DLPF (LPF=256Hz and Internal Sample Rate = 8kHz)
I2C->endTransmission();
Serial.println("Done");
delay(100);
}示例3:
int PCF8574::i2cRead(uint8_t value){
Wire1.requestFrom((uint8_t )PCFaddress, (uint8_t )1);
if (Wire1.available()) PCFPORTA = (int) Wire1.read();
else PCFPORTA = (int)value; //error condition
//return value;
return PCFPORTA;
}示例4: millis
/** Read multiple bytes from an 8-bit device register.
* @param useSPI true : use SPI
* @param devAddr I2C slave device address
* @param regAddr First register regAddr to read from
* @param length Number of bytes to read
* @param data Buffer to store read data in
* @param timeout Optional read timeout in milliseconds (0 to disable, leave off to use default class value in I2Cdev::readTimeout)
* @return Number of bytes read (0 indicates failure)
*/
int8_t I2Cdev::readBytes(bool useSPI, uint8_t devAddr, uint8_t regAddr, uint8_t length, uint8_t *data, uint16_t timeout) {
#ifdef I2CDEV_SERIAL_DEBUG
Serial.print(useSPI ? "SPI (0x" : "I2C 0x");
Serial.print(devAddr, HEX);
Serial.print(") reading ");
Serial.print(length, DEC);
Serial.print(" bytes from 0x");
Serial.print(regAddr, HEX);
Serial.print("...");
#endif
int8_t count = 0;
// I2C
if (!useSPI) {
Wire.beginTransmission(devAddr);
#if ((I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE && ARDUINO < 100) || I2CDEV_IMPLEMENTATION == I2CDEV_BUILTIN_NBWIRE)
Wire.send(regAddr);
#elif (I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE && ARDUINO >= 100)
Wire.write(regAddr);
#endif
Wire.endTransmission();
Wire.beginTransmission(devAddr);
Wire.requestFrom(devAddr, length);
uint32_t t1 = millis();
for (; Wire.available() && (timeout == 0 || millis() - t1 < timeout); count++) {
#if ((I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE && ARDUINO < 100) || I2CDEV_IMPLEMENTATION == I2CDEV_BUILTIN_NBWIRE)
data[count] = Wire.receive();
#elif (I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE && ARDUINO >= 100)
data[count] = Wire.read();
#endif
#ifdef I2CDEV_SERIAL_DEBUG
Serial.print(data[count], HEX);
if (count + 1 < length) Serial.print(" ");
#endif
}
if (timeout > 0 && millis() - t1 >= timeout && count < length) count = -1; // timeout
Wire.endTransmission();
} else {
digitalWrite(devAddr, LOW);
byte Addr = regAddr | 0x80;
SPI.transfer(Addr);
for (uint8_t cnt=0; cnt < length; cnt++) {
data[cnt] = SPI.transfer(0);
count++;
}
digitalWrite(devAddr, HIGH);
}
#ifdef I2CDEV_SERIAL_DEBUG
Serial.print(". Done (");
Serial.print(count, DEC);
Serial.println(" read).");
#endif
return count;
}示例5: delay
unsigned int MCP342X::readADC()
{
delay(80);
unsigned int t;
Wire1.requestFrom(I2C_ADDRESS, (byte) 3);
byte h = Wire1.read();
byte l = Wire1.read();
byte r = Wire1.read();
t = (h << 8) | l;
return t;
}示例6: MCP23018_WRITE
void MCP23018_WRITE(uint8_t device, uint8_t reg, uint8_t data)
{
uint8_t addr;
if(DEV_MISC == device){ addr = MISC_ADDR; }
else{ addr = VEH_IO_ADDR; }
i2c.beginTransmission(addr);
i2c.write(reg);
i2c.write(data);
i2c.endTransmission();
}示例7:
void MCP342X::selectChannel(byte channel, byte gain)
{
//configuration register, assuming 16 bit resolution
// Initiate one shot conversion
// 16 bits, 66.6 ms later the data should be available.
byte reg = 1 << BIT_RDY |
channel << BIT_C0 |
0 << BIT_OC |
1 << BIT_S1 |
gain;
Wire1.beginTransmission(I2C_ADDRESS);
Wire1.write(reg);
Wire1.endTransmission();
}示例8: millis
/** Read multiple bytes from an 8-bit device register.
* @param devAddr I2C slave device address
* @param regAddr First register regAddr to read from
* @param length Number of bytes to read
* @param data Buffer to store read data in
* @param timeout Optional read timeout in milliseconds (0 to disable, leave off to use default class value in I2Cdev::readTimeout)
* @return Number of bytes read (0 indicates failure)
*/
int8_t I2Cdev::readBytes(uint8_t devAddr, uint8_t regAddr, uint8_t length, uint8_t *data, uint16_t timeout) {
#ifdef I2CDEV_SERIAL_DEBUG
Serial.print("I2C (0x");
Serial.print(devAddr, HEX);
Serial.print(") reading ");
Serial.print(length, DEC);
Serial.print(" bytes from 0x");
Serial.print(regAddr, HEX);
Serial.print("...");
#endif
int8_t count = 0;
Wire.beginTransmission(devAddr);
#if ((I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE && ARDUINO < 100) || I2CDEV_IMPLEMENTATION == I2CDEV_BUILTIN_NBWIRE)
Wire.send(regAddr);
#elif (I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE && ARDUINO >= 100)
Wire.write(regAddr);
#endif
Wire.endTransmission();
Wire.beginTransmission(devAddr);
Wire.requestFrom(devAddr, length);
uint32_t t1 = millis();
for (; Wire.available() && (timeout == 0 || millis() - t1 < timeout); count++) {
#if ((I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE && ARDUINO < 100) || I2CDEV_IMPLEMENTATION == I2CDEV_BUILTIN_NBWIRE)
data[count] = Wire.receive();
#elif (I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE && ARDUINO >= 100)
data[count] = Wire.read();
#endif
#ifdef I2CDEV_SERIAL_DEBUG
Serial.print(data[count], HEX);
if (count + 1 < length) Serial.print(" ");
#endif
}
if (timeout > 0 && millis() - t1 >= timeout && count < length) count = -1; // timeout
Wire.endTransmission();
#ifdef I2CDEV_SERIAL_DEBUG
Serial.print(". Done (");
Serial.print(count, DEC);
Serial.println(" read).");
#endif
return count;
}示例9:
static void read16(byte reg, uint16_t *value)
{
Wire1.beginTransmission((uint8_t)BMP085_ADDRESS);
#if ARDUINO >= 100
Wire1.write((uint8_t)reg);
#else
Wire1.send(reg);
#endif
Wire1.endTransmission();
Wire1.requestFrom((uint8_t)BMP085_ADDRESS, (byte)2);
#if ARDUINO >= 100
*value = (Wire1.read() << 8) | Wire1.read();
#else
*value = (Wire1.receive() << 8) | Wire1.receive();
#endif
Wire1.endTransmission();
}示例10: setupTone
void setupTone(int pin) {
if (!globalToneSetupDone) {
Wire.begin();
globalToneSetupDone = 1;
}
if (!toneSetupDone[pin]) {
pinMode(pin, OUTPUT);
analogWrite(pin, 1);
toneSetupDone[pin] = 1;
}
}示例11: MCP23018_Init_IOCON
void MCP23018_Init_IOCON(void)
{
delayMicroseconds(1000u);
i2c.beginTransmission((uint8_t)MISC_ADDR);
i2c.write(0x0Au); // select IOCON
i2c.write(0xA0u); // BANK=1, ADDR pointer NOT incremented
i2c.endTransmission();
delayMicroseconds(1000u);
i2c.beginTransmission((uint8_t)VEH_IO_ADDR);
i2c.write(0x0Au); // select IOCON
i2c.write(0xA0u); // BANK=1, ADDR pointer NOT incremented
i2c.endTransmission();
}示例12: MCP23018_Init
void MCP23018_Init(void)
{
pinMode(MISC_INT_PIN, INPUT); // MISC_INT configured as INPUT
pinMode(MISC_RST_PIN, INPUT); // MISC_RST configured as INPUT (OUTPUT LOW to RESET)
pinMode(VEH_IO_INT_PIN, INPUT);
pinMode(VEH_IO_RST_PIN, INPUT);
MCP23018_Reset(DEV_MISC);
MCP23018_Reset(DEV_VEH_IO);
i2c.begin();
MCP23018_Init_IOCON();
// VEH IO INPUT pins (MISC_IN1:MISC_IN8) always inputs
MCP23018_WRITE(DEV_VEH_IO, (uint8_t)IODIRA, (uint8_t)0xFFu);
}示例13: writeCommand
static void writeCommand(byte reg, byte value)
{
Wire1.beginTransmission((uint8_t)BMP085_ADDRESS);
#if ARDUINO >= 100
Wire1.write((uint8_t)reg);
Wire1.write((uint8_t)value);
#else
Wire1.send(reg);
Wire1.send(value);
#endif
Wire1.endTransmission();
}示例14:
uint8_t MCP23018_READ(uint8_t device, uint8_t reg)
{
uint8_t addr;
uint8_t result;
if(DEV_MISC == device){ addr = MISC_ADDR; }
else{ addr = VEH_IO_ADDR; }
i2c.beginTransmission(addr);
i2c.write(reg); // IODIRA.BANK1 Address
i2c.endTransmission();
i2c.requestFrom(addr,(uint8_t)1u);
while (i2c.available() < 1u);
result = i2c.receive();
return result;
}示例15: Read_Gyro
// Read the ITG3200 Gyroscope
void Read_Gyro() {
// Point to the first data register
I2C->beginTransmission(GyroAddress);
I2C->write(0x1B); // point to the first data register
I2C->endTransmission();
// read 8 byte, from address 4 (Data Registers)
I2C->beginTransmission(GyroAddress);
I2C->requestFrom(GyroAddress, 8);
if (I2C->available() >= 8) {
//Just confirming that the data order is Temp, X, Y, Z
Gyro_T = (I2C->read() * 256) + I2C->read(); // Temp MSB * 256 + Temp LSB
Gyro_X = (I2C->read() * 256) + I2C->read(); // X axis MSB * 256 + X axis LSB
Gyro_Y = (I2C->read() * 256) + I2C->read(); // Y axis MSB * 256 + Y axis LSB
Gyro_Z = (I2C->read() * 256) + I2C->read(); // Z axis MSB * 256 + Z axis LSB
}
// Incorrent number of returned bytes
else {
Serial.println("Recieving incorrect amount of bytes from Gyroscope");
while(I2C->available()) {
Serial.print("data byte = ");
Serial.println(I2C->read(), DEC); //print the returned number as a decimal
}
}
I2C->endTransmission();
}