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Diff: ADXL345_I2C.cpp
- Revision:
- 14:f97c682b6fe5
- Parent:
- 13:aa50109c4cae
diff -r aa50109c4cae -r f97c682b6fe5 ADXL345_I2C.cpp --- a/ADXL345_I2C.cpp Sun Jul 20 13:53:17 2014 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,423 +0,0 @@ -/** - * @author Peter Swanson - * A personal note from me: Jesus Christ has changed my life so much it blows my mind. I say this because - * today, religion is thought of as something that you do or believe and has about as - * little impact on a person as their political stance. But for me, God gives me daily - * strength and has filled my life with the satisfaction that I could never find in any - * of the other things that I once looked for it in. - * If your interested, heres verse that changed my life: - * Rom 8:1-3: "Therefore, there is now no condemnation for those who are in Christ Jesus, - * because through Christ Jesus, the law of the Spirit who gives life has set - * me free from the law of sin (which brings...) and death. For what the law - * was powerless to do in that it was weakened by the flesh, God did by sending - * His own Son in the likeness of sinful flesh to be a sin offering. And so He - * condemned sin in the flesh in order that the righteous requirements of the - * (God's) law might be fully met in us, who live not according to the flesh - * but according to the Spirit." - * - * A special thanks to Ewout van Bekkum for all his patient help in developing this library! - * - * @section LICENSE - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - * - * @section DESCRIPTION - * - * ADXL345, triple axis, I2C interface, accelerometer. - * - * Datasheet: - * - * http://www.analog.com/static/imported-files/data_sheets/ADXL345.pdf - */ - -/** - * Includes - */ -#include "ADXL345_I2C.h" - -//#include "mbed.h" - -ADXL345_I2C::ADXL345_I2C(PinName sda, PinName scl) : i2c_(sda, scl) { - - //400kHz, allowing us to use the fastest data rates. - i2c_.frequency(400000); -// initialize the BW data rate - char tx[2]; - tx[0] = ADXL345_BW_RATE_REG; - tx[1] = ADXL345_1600HZ; //value greater than or equal to 0x0A is written into the rate bits (Bit D3 through Bit D0) in the BW_RATE register - i2c_.write( ADXL345_I2C_WRITE , tx, 2); - -//Data format (for +-16g) - This is done by setting Bit D3 of the DATA_FORMAT register (Address 0x31) and writing a value of 0x03 to the range bits (Bit D1 and Bit D0) of the DATA_FORMAT register (Address 0x31). - - char rx[2]; - rx[0] = ADXL345_DATA_FORMAT_REG; - rx[1] = 0x0B; - // full res and +_16g - i2c_.write( ADXL345_I2C_WRITE , rx, 2); - - // Set Offset - programmed into the OFSX, OFSY, and OFXZ registers, respectively, as 0xFD, 0x03 and 0xFE. - char x[2]; - x[0] = ADXL345_OFSX_REG ; - x[1] = 0xFD; - i2c_.write( ADXL345_I2C_WRITE , x, 2); - char y[2]; - y[0] = ADXL345_OFSY_REG ; - y[1] = 0x03; - i2c_.write( ADXL345_I2C_WRITE , y, 2); - char z[2]; - z[0] = ADXL345_OFSZ_REG ; - z[1] = 0xFE; - i2c_.write( ADXL345_I2C_WRITE , z, 2); -} - - -char ADXL345_I2C::SingleByteRead(char address){ - char tx = address; - char output; - i2c_.write( ADXL345_I2C_WRITE , &tx, 1); //tell it what you want to read - i2c_.read( ADXL345_I2C_READ , &output, 1); //tell it where to store the data - return output; - -} - - -/* -***info on the i2c_.write*** -address 8-bit I2C slave address [ addr | 0 ] -data Pointer to the byte-array data to send -length Number of bytes to send -repeated Repeated start, true - do not send stop at end -returns 0 on success (ack), or non-0 on failure (nack) -*/ - -int ADXL345_I2C::SingleByteWrite(char address, char data){ - int ack = 0; - char tx[2]; - tx[0] = address; - tx[1] = data; - return ack | i2c_.write( ADXL345_I2C_WRITE , tx, 2); -} - - - -void ADXL345_I2C::multiByteRead(char address, char* output, int size) { - i2c_.write( ADXL345_I2C_WRITE, &address, 1); //tell it where to read from - i2c_.read( ADXL345_I2C_READ , output, size); //tell it where to store the data read -} - - -int ADXL345_I2C::multiByteWrite(char address, char* ptr_data, int size) { - int ack; - - ack = i2c_.write( ADXL345_I2C_WRITE, &address, 1); //tell it where to write to - return ack | i2c_.write( ADXL345_I2C_READ, ptr_data, size); //tell it what data to write - -} - - -void ADXL345_I2C::getOutput(int* readings){ - char buffer[6]; - multiByteRead(ADXL345_DATAX0_REG, buffer, 6); - - readings[0] = (int)buffer[1] << 8 | (int)buffer[0]; - readings[1] = (int)buffer[3] << 8 | (int)buffer[2]; - readings[2] = (int)buffer[5] << 8 | (int)buffer[4]; - -} - - - -char ADXL345_I2C::getDeviceID() { - return SingleByteRead(ADXL345_DEVID_REG); - } -// -int ADXL345_I2C::setPowerMode(char mode) { - - //Get the current register contents, so we don't clobber the rate value. - char registerContents = (mode << 4) | SingleByteRead(ADXL345_BW_RATE_REG); - - return SingleByteWrite(ADXL345_BW_RATE_REG, registerContents); - -} - -char ADXL345_I2C::getPowerControl() { - return SingleByteRead(ADXL345_POWER_CTL_REG); -} - -int ADXL345_I2C::setPowerControl(char settings) { - return SingleByteWrite(ADXL345_POWER_CTL_REG, settings); - -} - - - -char ADXL345_I2C::getDataFormatControl(void){ - - return SingleByteRead(ADXL345_DATA_FORMAT_REG); -} - -int ADXL345_I2C::setDataFormatControl(char settings){ - - return SingleByteWrite(ADXL345_DATA_FORMAT_REG, settings); - -} - -int ADXL345_I2C::setDataRate(char rate) { - - //Get the current register contents, so we don't clobber the power bit. - char registerContents = SingleByteRead(ADXL345_BW_RATE_REG); - - registerContents &= 0x10; - registerContents |= rate; - - return SingleByteWrite(ADXL345_BW_RATE_REG, registerContents); - -} - - -char ADXL345_I2C::getOffset(char axis) { - - char address = 0; - - if (axis == ADXL345_X) { - address = ADXL345_OFSX_REG; - } else if (axis == ADXL345_Y) { - address = ADXL345_OFSY_REG; - } else if (axis == ADXL345_Z) { - address = ADXL345_OFSZ_REG; - } - - return SingleByteRead(address); -} - -int ADXL345_I2C::setOffset(char axis, char offset) { - - char address = 0; - - if (axis == ADXL345_X) { - address = ADXL345_OFSX_REG; - } else if (axis == ADXL345_Y) { - address = ADXL345_OFSY_REG; - } else if (axis == ADXL345_Z) { - address = ADXL345_OFSZ_REG; - } - - return SingleByteWrite(address, offset); - -} - - -char ADXL345_I2C::getFifoControl(void){ - - return SingleByteRead(ADXL345_FIFO_CTL); - -} - -int ADXL345_I2C::setFifoControl(char settings){ - return SingleByteWrite(ADXL345_FIFO_STATUS, settings); - -} - -char ADXL345_I2C::getFifoStatus(void){ - - return SingleByteRead(ADXL345_FIFO_STATUS); - -} - - - -char ADXL345_I2C::getTapThreshold(void) { - - return SingleByteRead(ADXL345_THRESH_TAP_REG); -} - -int ADXL345_I2C::setTapThreshold(char threshold) { - - return SingleByteWrite(ADXL345_THRESH_TAP_REG, threshold); - -} - - -float ADXL345_I2C::getTapDuration(void) { - - return (float)SingleByteRead(ADXL345_DUR_REG)*625; -} - -int ADXL345_I2C::setTapDuration(short int duration_us) { - - short int tapDuration = duration_us / 625; - char tapChar[2]; - tapChar[0] = (tapDuration & 0x00FF); - tapChar[1] = (tapDuration >> 8) & 0x00FF; - return multiByteWrite(ADXL345_DUR_REG, tapChar, 2); - -} - -float ADXL345_I2C::getTapLatency(void) { - - return (float)SingleByteRead(ADXL345_LATENT_REG)*1.25; -} - -int ADXL345_I2C::setTapLatency(short int latency_ms) { - - latency_ms = latency_ms / 1.25; - char latChar[2]; - latChar[0] = (latency_ms & 0x00FF); - latChar[1] = (latency_ms << 8) & 0xFF00; - return multiByteWrite(ADXL345_LATENT_REG, latChar, 2); - -} - -float ADXL345_I2C::getWindowTime(void) { - - return (float)SingleByteRead(ADXL345_WINDOW_REG)*1.25; -} - -int ADXL345_I2C::setWindowTime(short int window_ms) { - - window_ms = window_ms / 1.25; - char windowChar[2]; - windowChar[0] = (window_ms & 0x00FF); - windowChar[1] = ((window_ms << 8) & 0xFF00); - return multiByteWrite(ADXL345_WINDOW_REG, windowChar, 2); - -} - -char ADXL345_I2C::getActivityThreshold(void) { - - return SingleByteRead(ADXL345_THRESH_ACT_REG); -} - -int ADXL345_I2C::setActivityThreshold(char threshold) { - return SingleByteWrite(ADXL345_THRESH_ACT_REG, threshold); - -} - -char ADXL345_I2C::getInactivityThreshold(void) { - return SingleByteRead(ADXL345_THRESH_INACT_REG); - -} - -//int FUNCTION(short int * ptr_Output) -//short int FUNCTION () - -int ADXL345_I2C::setInactivityThreshold(char threshold) { - return SingleByteWrite(ADXL345_THRESH_INACT_REG, threshold); - -} - -char ADXL345_I2C::getTimeInactivity(void) { - - return SingleByteRead(ADXL345_TIME_INACT_REG); - -} - -int ADXL345_I2C::setTimeInactivity(char timeInactivity) { - return SingleByteWrite(ADXL345_TIME_INACT_REG, timeInactivity); - -} - -char ADXL345_I2C::getActivityInactivityControl(void) { - - return SingleByteRead(ADXL345_ACT_INACT_CTL_REG); - -} - -int ADXL345_I2C::setActivityInactivityControl(char settings) { - return SingleByteWrite(ADXL345_ACT_INACT_CTL_REG, settings); - -} - -char ADXL345_I2C::getFreefallThreshold(void) { - - return SingleByteRead(ADXL345_THRESH_FF_REG); - -} - -int ADXL345_I2C::setFreefallThreshold(char threshold) { - return SingleByteWrite(ADXL345_THRESH_FF_REG, threshold); - -} - -char ADXL345_I2C::getFreefallTime(void) { - - return SingleByteRead(ADXL345_TIME_FF_REG)*5; - -} - -int ADXL345_I2C::setFreefallTime(short int freefallTime_ms) { - freefallTime_ms = freefallTime_ms / 5; - char fallChar[2]; - fallChar[0] = (freefallTime_ms & 0x00FF); - fallChar[1] = (freefallTime_ms << 8) & 0xFF00; - - return multiByteWrite(ADXL345_TIME_FF_REG, fallChar, 2); - -} - -char ADXL345_I2C::getTapAxisControl(void) { - - return SingleByteRead(ADXL345_TAP_AXES_REG); - -} - -int ADXL345_I2C::setTapAxisControl(char settings) { - return SingleByteWrite(ADXL345_TAP_AXES_REG, settings); - -} - -char ADXL345_I2C::getTapSource(void) { - - return SingleByteRead(ADXL345_ACT_TAP_STATUS_REG); - -} - - - -char ADXL345_I2C::getInterruptEnableControl(void) { - - return SingleByteRead(ADXL345_INT_ENABLE_REG); - -} - -int ADXL345_I2C::setInterruptEnableControl(char settings) { - return SingleByteWrite(ADXL345_INT_ENABLE_REG, settings); - -} - -char ADXL345_I2C::getInterruptMappingControl(void) { - - return SingleByteRead(ADXL345_INT_MAP_REG); - -} - -int ADXL345_I2C::setInterruptMappingControl(char settings) { - return SingleByteWrite(ADXL345_INT_MAP_REG, settings); - -} - -char ADXL345_I2C::getInterruptSource(void){ - - return SingleByteRead(ADXL345_INT_SOURCE_REG); - -} - - - -