Esempi in C++ (Cpp) per spi_transfer_16

Esempio n. 1

File: MPU6000.cpp Progetto: a5826995/Segduino

/*
  this is called from a timer interrupt to read data from the MPU6000
  and add it to _sum[]
 */
void MPU6000::read ()
{
    if (_new_data == 0) {
        // no new data is ready from the MPU6000
        return;
    }
    _new_data = 0;

    // now read the data
    digitalWrite(_cs_pin, LOW);
    byte addr = MPUREG_ACCEL_XOUT_H | 0x80;
    SPI.transfer(addr);
    for (uint8_t i=0; i<7; i++) {
        _sum[i] += spi_transfer_16();
    }

    _count++;
    if (_count == 0) {
        // rollover - v unlikely
        memset((void*)_sum, 0, sizeof(_sum));
    }

    digitalWrite(_cs_pin, HIGH);

	// should also read FIFO data if enabled
	if( _dmp_initialised ) {
		if( FIFO_ready() ) {
			FIFO_getPacket();
		}
	}
}

Esempio n. 2

File: AP_InertialSensor_MPU6000.cpp Progetto: AhmedTawfik88/arduino-cmake-tests

/*
  this is called from a timer interrupt to read data from the MPU6000
  and add it to _sum[]
 */
void AP_InertialSensor_MPU6000::read(uint32_t )
{
    if (_new_data == 0) {
        // no new data is ready from the MPU6000
        return;
    }
    _new_data = 0;

    // now read the data
    digitalWrite(_cs_pin, LOW);
    byte addr = MPUREG_ACCEL_XOUT_H | 0x80;
    SPI.transfer(addr);
    for (uint8_t i=0; i<7; i++) {
        _sum[i] += spi_transfer_16();
    }

    _count++;
    if (_count == 0) {
        // rollover - v unlikely
        memset((void*)_sum, 0, sizeof(_sum));
    }

    digitalWrite(_cs_pin, HIGH);
}