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- ADXL345 TURN ON ARDUINO I2C EXAMPLE HOW TO
- ADXL345 TURN ON ARDUINO I2C EXAMPLE SERIAL
- ADXL345 TURN ON ARDUINO I2C EXAMPLE CODE
- ADXL345 TURN ON ARDUINO I2C EXAMPLE FREE
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* UNCOMMENT TO VIEW X Y Z ACCELEROMETER VALUES */ * Accelerometer Readings and Interrupt */Īdxl.readAccel(&x, &y, &z) // Read the accelerometer values and store them in variables declared above x,y,z attachInterrupt(digitalPinToInterrupt(interruptPin), ADXL_ISR, RISING) // Attach Interrupt Turn on Interrupts for each mode (1 = ON, 0 = OFF) This library may have a problem using INT2 pin. This chooses the pin on the ADX元45 to use for Interrupts. Accepts only 1 or 2 values for pins INT1 and INT2.
ADXL345 TURN ON ARDUINO I2C EXAMPLE FREE
tImportantInterruptMapping(1, 1, 1, 1, 1) // Sets "tEveryInterruptMapping(single tap, double tap, free fall, activity, inactivity) " Setting all interupts to take place on INT1 pin Set values for what is considered FREE FALL (0-255)Īdxl.setFreeFallThreshold(7) // (5 - 9) recommended - 62.5mg per incrementĪdxl.setFreeFallDuration(30) // (20 - 70) recommended - 5ms per increment Set values for what is considered a TAP and what is a DOUBLE TAP (0-255)Īdxl.setTapThreshold(50) // 62.5 mg per incrementĪdxl.setTapDuration(15) // 625 μs per incrementĪdxl.setDoubleTapLatency(80) // 1.25 ms per incrementĪdxl.setDoubleTapWindow(200) // 1.25 ms per increment SPI pins on the ATMega328: 11, 12 and 13 as reference in SPI LibraryĪdxl.setActivityXYZ(1, 0, 0) // Set to activate movement detection in the axes "tActivityXYZ(X, Y, Z) " (1 = ON, 0 = OFF)Īdxl.setActivityThreshold(75) // 62.5mg per increment // Set activity // Inactivity thresholds (0-255)Īdxl.setInactivityXYZ(1, 0, 0) // Set to detect inactivity in all the axes "tInactivityXYZ(X, Y, Z) " (1 = ON, 0 = OFF)Īdxl.setInactivityThreshold(75) // 62.5mg per increment // Set inactivity // Inactivity thresholds (0-255)Īdxl.setTimeInactivity(10) // How many seconds of no activity is inactive?Īdxl.setTapDetectionOnXYZ(0, 0, 1) // Detect taps in the directions turned ON "tTapDetectionOnX(X, Y, Z) " (1 = ON, 0 = OFF)
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Higher Values = Wider Measurement RangeĪdxl.setSpiBit(0) // Configure the device to be in 4 wire SPI mode when set to '0' or 3 wire SPI mode when set to 1 Serial.println("SparkFun ADX元45 Accelerometer Hook Up Guide Example") Īdxl.setRangeSetting(8) // Give the range settings
ADXL345 TURN ON ARDUINO I2C EXAMPLE SERIAL
Serial.begin(9600) // Start the serial terminal int interruptPin = 2 // Setup pin 2 to be the interrupt pin (for most Arduino Boards) ADX元45 adxl = ADX元45() // USE FOR I2C COMMUNICATION * Comment Out The One You Are Not Using */ĪDX元45 adxl = ADX元45(10) // USE FOR SPI COMMUNICATION, ADX元45(CS_PIN) * Bildr ADX元45 source file modified to support * Triple Axis Accelerometer Breakout - ADX元45 Write the data we want to write to the register.
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Write the address of the register we want to write.Initiate transmission to device (using write address*).The diagram shows that in order to perform a write to a register on a device, we need to go through the following steps: Now, at the bottom of page 10 in datasheet, you see a diagram of how reads and writes should be performed. Ignore the read and write addresses as the Wire library takes care of this for us (catch). You can see, that the wiring I chose, defines the device address as 0x53, the datasheet also says that this translates to 0xA6 address for write and 0xA7 address for read (because the base device address is 7-bit + 1 read/write bit). When using I2C protocol there are two ways (yes, again two ways) to wire the ADX元45, each way gives it a different device address (so that may prevent address collision).
ADXL345 TURN ON ARDUINO I2C EXAMPLE HOW TO
Open page 10 in the datasheet, this page explains how to talk to the device using I2C protocol. There are few catches! Though, if you're aware of them, the library should be easy to use. I wish I could say it's usage is straightforward, but it is not quite so. The Arduino Wire library provides a sort-of-easy way to interact with components that implement the I2C communication protocol.
ADXL345 TURN ON ARDUINO I2C EXAMPLE CODE
I've chose the I2C (the schematics above are for I2C communication) because it is easier to wire for, and easier to code - the downside, they say, is that I2C is slower. There are two ways to talk to the sensor, SPI and I2C protocols. You might want to have the ADX元45 Datasheet handy while you code. Now, after we have everything plugged in nicely, we may start writing the code for getting the acceleration values from the sensor.