C++ (Cpp) restore_spi_settings Examples

Example #1

File: AP_OpticalFlow_ADNS3080.cpp Project: Bieghe/Arduino

// Read a register from the sensor
byte
AP_OpticalFlow_ADNS3080::read_register(byte address)
{
    byte result = 0, junk = 0;

    backup_spi_settings();

    // take the chip select low to select the device
    digitalWrite(_cs_pin, LOW);

    // send the device the register you want to read:
    junk = SPI.transfer(address);

    // small delay
    delayMicroseconds(50);

    // send a value of 0 to read the first byte returned:
    result = SPI.transfer(0x00);

    // take the chip select high to de-select:
    digitalWrite(_cs_pin, HIGH);

    restore_spi_settings();

    return result;
}

Example #2

File: AP_OpticalFlow_ADNS3080.cpp Project: jbohren-forks/cnc-msl

// Read a register from the sensor
byte
AP_OpticalFlow_ADNS3080::read_register(byte address)
{
    uint8_t result = 0;
    uint8_t junk = 0;

    // get spi semaphore if required
    if( _spi_semaphore != NULL ) {
        // if failed to get semaphore then just quietly fail
        if( !_spi_semaphore->get(this) ) {
            return 0;
        }
    }

    backup_spi_settings();

    // take the chip select low to select the device
    digitalWrite(_cs_pin, LOW);

    if( _spi_bus == ADNS3080_SPIBUS_1 ) {
        junk = SPI.transfer(address);   // send the device the register you want to read:
        delayMicroseconds(50);          // small delay
        result = SPI.transfer(0x00);    // send a value of 0 to read the first byte returned:
    }else if( _spi_bus == ADNS3080_SPIBUS_3 ) {
        junk = SPI3.transfer(address);   // send the device the register you want to read:
        delayMicroseconds(50);          // small delay
        result = SPI3.transfer(0x00);    // send a value of 0 to read the first byte returned:
    }

    // take the chip select high to de-select:
    digitalWrite(_cs_pin, HIGH);

    restore_spi_settings();

    // get spi semaphore if required
    if( _spi_semaphore != NULL ) {
        _spi_semaphore->release(this);
    }

    return result;
}

Example #3

File: ADNS3080.cpp Project: Leenix/TrafficCounter

// write a value to one of the sensor's registers
void AP_OpticalFlow_ADNS3080::write_register(byte address, byte value){
	byte junk = 0;

	backup_spi_settings();

	// take the chip select low to select the device
	digitalWrite(_cs_pin, LOW);

	// send register address
	junk = SPI.transfer(address | 0x80);

	// small delay
	delayMicroseconds(50);

	// send data
	junk = SPI.transfer(value);

	// take the chip select high to de-select:
	digitalWrite(_cs_pin, HIGH);

	restore_spi_settings();
}

Example #4

File: AP_OpticalFlow_ADNS3080.cpp Project: jbohren-forks/cnc-msl

// write a value to one of the sensor's registers
void
AP_OpticalFlow_ADNS3080::write_register(byte address, byte value)
{
    byte junk = 0;

    // get spi semaphore if required
    if( _spi_semaphore != NULL ) {
        // if failed to get semaphore then just quietly fail
        if( !_spi_semaphore->get(this) ) {
            return;
        }
    }

    backup_spi_settings();

    // take the chip select low to select the device
    digitalWrite(_cs_pin, LOW);

    if( _spi_bus == ADNS3080_SPIBUS_1 ) {
        junk = SPI.transfer(address | 0x80 );   // send register address
        delayMicroseconds(50);                  // small delay
        junk = SPI.transfer(value);             // send data
    }else if( _spi_bus == ADNS3080_SPIBUS_3 ) {
        junk = SPI3.transfer(address | 0x80 );   // send register address
        delayMicroseconds(50);                  // small delay
        junk = SPI3.transfer(value);             // send data
    }

    // take the chip select high to de-select:
    digitalWrite(_cs_pin, HIGH);

    restore_spi_settings();

    // get spi3 semaphore if required
    if( _spi_semaphore != NULL ) {
        _spi_semaphore->release(this);
    }
}