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Squashed 'tmk_core/' changes from 7967731..b9e0ea0

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b9e0ea0 Merge commit '7fa9d8bdea3773d1195b04d98fcf27cf48ddd81d' as 'tool/mbed/mbed-sdk'
7fa9d8b Squashed 'tool/mbed/mbed-sdk/' content from commit 7c21ce5

git-subtree-dir: tmk_core
git-subtree-split: b9e0ea08cb940de20b3610ecdda18e9d8cd7c552
This commit is contained in:
Jun Wako 2015-04-24 16:26:14 +09:00
parent a20ef7052c
commit 1fe4406f37
4198 changed files with 2016457 additions and 0 deletions
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193
tool/mbed/mbed-sdk/libraries/tests/peripherals/MMA7660/MMA7660.cpp Normal file
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#include "MMA7660.h"
MMA7660::MMA7660(PinName sda, PinName scl, bool active) : _i2c(sda, scl)
{
setActive(active);
samplerate = 64;
}
//Since the MMA lacks a WHO_AM_I register, we can only check if there is a device that answers to the I2C address
bool MMA7660::testConnection( void )
{
if (_i2c.write(MMA7660_ADDRESS, NULL, 0) == 0 )
return true;
else
return false;
}
void MMA7660::setActive(bool state)
{
char modereg = read(MMA7660_MODE_R);
modereg &= ~(1<<0);
//If it somehow was in testmode, disable that
if (modereg && (1<<2)) {
modereg &= ~(1<<2);
write(MMA7660_MODE_R, modereg);
}
modereg += state;
write(MMA7660_MODE_R, modereg);
}
void MMA7660::readData(int *data)
{
if (!active) {
setActive(true);
active = true;
wait(0.012 + 1/samplerate); //Wait until new sample is ready, my experience is that 1/samplerate isnt needed, but datasheet says so
}
char temp[3];
bool alert;
do {
alert = false;
read(MMA7660_XOUT_R, temp, 3);
for (int i = 0; i<3; i++) {
if (temp[i] > 63)
alert = true;
if (temp[i] > 31)
temp[i] += 128+64;
data[i] = (signed char)temp[i];
}
} while (alert);
if (!active)
setActive(false);
}
void MMA7660::readData(float *data)
{
int intdata[3];
readData(intdata);
for (int i = 0; i<3; i++)
data[i] = intdata[i]/MMA7660_SENSITIVITY;
}
float MMA7660::x( void )
{
return getSingle(0);
}
float MMA7660::y( void )
{
return getSingle(1);
}
float MMA7660::z( void )
{
return getSingle(2);
}
void MMA7660::setSampleRate(int samplerate)
{
setActive(false); //Not allowed to be active to change anything
int rates[] = {120, 64, 32, 16, 8, 4, 2, 1}; //Alowed samplerates (and their number in array is also number required for MMA)
int sampleLoc = 0, sampleError = 10000, temp;
for (int i = 0; i<8; i++) {
temp = abs( rates[i] - samplerate );
if (temp<sampleError) {
sampleLoc = i;
sampleError=temp;
}
}
//Update the samplerate reg
temp = read(MMA7660_SR_R);
temp &= ~0x07; //Awake sample rate are lowest 3 bit
temp |= sampleLoc;
write(MMA7660_SR_R, temp);
this->samplerate = rates[sampleLoc];
setActive(active); //Restore previous active state
}
MMA7660::Orientation MMA7660::getSide( void )
{
char tiltreg = read(MMA7660_TILT_R);
//We care about 2 LSBs
tiltreg &= 0x03;
if (tiltreg == 0x01)
return MMA7660::Front;
if (tiltreg == 0x02)
return MMA7660::Back;
return MMA7660::Unknown;
}
MMA7660::Orientation MMA7660::getOrientation( void )
{
char tiltreg = read(MMA7660_TILT_R);
//We care about bit 2, 3 and 4 (counting from zero)
tiltreg &= 0x07<<2;
tiltreg >>= 2;
if (tiltreg == 0x01)
return MMA7660::Left;
if (tiltreg == 0x02)
return MMA7660::Right;
if (tiltreg == 0x05)
return MMA7660::Down;
if (tiltreg == 0x06)
return MMA7660::Up;
return MMA7660::Unknown;
}
//////////////////////////////////////////////
///////////////PRIVATE////////////////////////
//////////////////////////////////////////////
void MMA7660::write(char address, char data)
{
char temp[2];
temp[0]=address;
temp[1]=data;
_i2c.write(MMA7660_ADDRESS, temp, 2);
}
char MMA7660::read(char address)
{
char retval;
_i2c.write(MMA7660_ADDRESS, &address, 1, true);
_i2c.read(MMA7660_ADDRESS, &retval, 1);
return retval;
}
void MMA7660::read(char address, char *data, int length)
{
_i2c.write(MMA7660_ADDRESS, &address, 1, true);
_i2c.read(MMA7660_ADDRESS, data, length);
}
float MMA7660::getSingle( int number )
{
if (!active) {
setActive(true);
wait(0.012 + 1/samplerate); //Wait until new sample is ready
}
signed char temp;
bool alert;
do {
alert = false;
temp = read(MMA7660_XOUT_R + number);
if (temp > 63)
alert = true;
if (temp > 31)
temp += 128+64;
} while (alert);
if (!active)
setActive(false);
return temp / MMA7660_SENSITIVITY;
}

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tool/mbed/mbed-sdk/libraries/tests/peripherals/MMA7660/MMA7660.h Normal file
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/* Copyright (c) <year> <copyright holders>, MIT 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.
*/
#include "mbed.h"
#ifndef MMA7660_H
#define MMA7660_H
#define MMA7660_ADDRESS 0x98
#define MMA7660_SENSITIVITY 21.33
#define MMA7660_XOUT_R 0x00
#define MMA7660_YOUT_R 0x01
#define MMA7660_ZOUT_R 0x02
#define MMA7660_TILT_R 0x03
#define MMA7660_INT_R 0x06
#define MMA7660_MODE_R 0x07
#define MMA7660_SR_R 0x08
/** An interface for the MMA7660 triple axis accelerometer
*
* @code
* //Uses the measured z-acceleration to drive leds 2 and 3 of the mbed
*
* #include "mbed.h"
* #include "MMA7660.h"
*
* MMA7660 MMA(p28, p27);
*
* DigitalOut connectionLed(LED1);
* PwmOut Zaxis_p(LED2);
* PwmOut Zaxis_n(LED3);
*
* int main() {
* if (MMA.testConnection())
* connectionLed = 1;
*
* while(1) {
* Zaxis_p = MMA.z();
* Zaxis_n = -MMA.z();
* }
*
* }
* @endcode
*/
class MMA7660
{
public:
/**
* The 6 different orientations and unknown
*
* Up & Down = X-axis
* Right & Left = Y-axis
* Back & Front = Z-axis
*
*/
enum Orientation {Up, Down,
Right, Left,
Back, Front,
Unknown
};
/**
* Creates a new MMA7660 object
*
* @param sda - I2C data pin
* @param scl - I2C clock pin
* @param active - true (default) to enable the device, false to keep it standby
*/
MMA7660(PinName sda, PinName scl, bool active = true);
/**
* Tests if communication is possible with the MMA7660
*
* Because the MMA7660 lacks a WHO_AM_I register, this function can only check
* if there is an I2C device that responds to the MMA7660 address
*
* @param return - true for successfull connection, false for no connection
*/
bool testConnection( void );
/**
* Sets the active state of the MMA7660
*
* Note: This is unrelated to awake/sleep mode
*
* @param state - true for active, false for standby
*/
void setActive( bool state);
/**
* Reads acceleration data from the sensor
*
* When the parameter is a pointer to an integer array it will be the raw data.
* When it is a pointer to a float array it will be the acceleration in g's
*
* @param data - pointer to array with length 3 where the acceleration data will be stored, X-Y-Z
*/
void readData( int *data);
void readData( float *data);
/**
* Get X-data
*
* @param return - X-acceleration in g's
*/
float x( void );
/**
* Get Y-data
*
* @param return - Y-acceleration in g's
*/
float y( void );
/**
* Get Z-data
*
* @param return - Z-acceleration in g's
*/
float z( void );
/**
* Sets the active samplerate
*
* The entered samplerate will be rounded to nearest supported samplerate.
* Supported samplerates are: 120 - 64 - 32 - 16 - 8 - 4 - 2 - 1 samples/second.
*
* @param samplerate - the samplerate that will be set
*/
void setSampleRate(int samplerate);
/**
* Returns if it is on its front, back, or unknown side
*
* This is read from MMA7760s registers, page 12 of datasheet
*
* @param return - Front, Back or Unknown orientation
*/
Orientation getSide( void );
/**
* Returns if it is on it left, right, down or up side
*
* This is read from MMA7760s registers, page 12 of datasheet
*
* @param return - Left, Right, Down, Up or Unknown orientation
*/
Orientation getOrientation ( void );
private:
/**
* Writes data to the device
*
* @param adress - register address to write to
* @param data - data to write
*/
void write( char address, char data);
/**
* Read data from the device
*
* @param adress - register address to write to
* @return - data from the register specified by RA
*/
char read( char adress);
/**
* Read multiple regigsters from the device, more efficient than using multiple normal reads.
*
* @param adress - register address to write to
* @param length - number of bytes to read
* @param data - pointer where the data needs to be written to
*/
void read( char adress, char *data, int length);
/**
* Reads single axis
*/
float getSingle(int number);
I2C _i2c;
bool active;
float samplerate;
};
#endif