MMA7660 Accelerometer
The MMA7660 is a 6-bit triple-axis accelerometer with +/- 1.5g range. Its a low power sensor mainly to be used for orientation detection of mobile devices and uses an I2C interface. It is used on the mbed Application board.
Hello World!¶
Import program
00001 //Uses the measured z-acceleration to drive leds 2 and 3 of the mbed 00002 00003 #include "mbed.h" 00004 #include "MMA7660.h" 00005 00006 MMA7660 MMA(p28, p27); 00007 00008 DigitalOut connectionLed(LED1); 00009 PwmOut Zaxis_p(LED2); 00010 PwmOut Zaxis_n(LED3); 00011 00012 int main() { 00013 if (MMA.testConnection()) 00014 connectionLed = 1; 00015 00016 while(1) { 00017 Zaxis_p = MMA.z(); 00018 Zaxis_n = -MMA.z(); 00019 } 00020 00021 }
Library¶
Import library
Public Types |
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| enum | Orientation |
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The 6 different orientations and unknown. More... |
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Public Member Functions |
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| MMA7660 (PinName sda, PinName scl, bool active=true) | |
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Creates a new
MMA7660
object.
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| bool | testConnection (void) |
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Tests if communication is possible with the
MMA7660
.
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| void | setActive (bool state) |
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Sets the active state of the
MMA7660
.
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| void | readData (int *data) |
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Reads acceleration data from the sensor.
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| float | x (void) |
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Get X-data.
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| float | y (void) |
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Get Y-data.
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| float | z (void) |
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Get Z-data.
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| void | setSampleRate (int samplerate) |
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Sets the active samplerate.
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| Orientation | getSide (void) |
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Returns if it is on its front, back, or unknown side.
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| Orientation | getOrientation (void) |
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Returns if it is on it left, right, down or up side.
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| MMA7660 Signal Name | mbed pin |
|---|---|
| Vdd | Vout |
| Vss | Gnd |
| SCL | p27 |
| SDA | p28 |