Revision 8:31f7a3426768, committed 2017-03-08

Comitter:

sbart

Date:

Wed Mar 08 04:11:07 2017 +0000

Parent:

7:7812354ef684

Commit message:

SB-HW-8.1

Changed in this revision

diff -r 7812354ef684 -r 31f7a3426768 MMA8451Q8.cpp
--- a/MMA8451Q8.cpp	Wed Feb 22 15:35:47 2017 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,100 +0,0 @@
-/* Copyright (c) 2010-2011 mbed.org, 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.
-*/
-// Modify to change full scale gravity range 141207 sc
-
-
-#include "MMA8451Q8.h"
-
-#define REG_WHO_AM_I      0x0D
-#define REG_CTRL_REG_1    0x2A
-#define REG_OUT_X_MSB     0x01
-#define REG_OUT_Y_MSB     0x03
-#define REG_OUT_Z_MSB     0x05
-#define XYZ_DATA_CFG      0x0E
-
-#define UINT14_MAX        16383
-
-#define MAX_2G            0x00
-#define MAX_4G            0x01
-#define MAX_8G            0x02
-
-#define GSCALING          1024.0
-
-MMA8451Q::MMA8451Q(PinName sda, PinName scl, int addr) : m_i2c(sda, scl), m_addr(addr) {
-    // activate the peripheral
-    uint8_t data[2] = {REG_CTRL_REG_1, 0x01};
-    writeRegs(data, 2);
-}
-
-MMA8451Q::~MMA8451Q() { }
-
-uint8_t MMA8451Q::getWhoAmI() {
-    uint8_t who_am_i = 0;
-    readRegs(REG_WHO_AM_I, &who_am_i, 1);
-    return who_am_i;
-}
-void MMA8451Q::setGLimit() {   
-    uint8_t data[2] = {REG_CTRL_REG_1, 0x00};
-    writeRegs(data, 2); // put in standby
-    data[0] = XYZ_DATA_CFG;
-    data[1] = MAX_8G;
-    writeRegs(data, 2);// change g limit
-    data[0] = REG_CTRL_REG_1;
-    data[1] = 0x01;
-    writeRegs(data, 2); // make active
-}
-
-float MMA8451Q::getAccX() {
-    return (float(getAccAxis(REG_OUT_X_MSB))/GSCALING);
-}
-
-float MMA8451Q::getAccY() {
-    return (float(getAccAxis(REG_OUT_Y_MSB))/GSCALING);
-}
-
-float MMA8451Q::getAccZ() {
-    return (float(getAccAxis(REG_OUT_Z_MSB))/GSCALING);
-}
-
-void MMA8451Q::getAccAllAxis(float * res) {
-    res[0] = getAccX();
-    res[1] = getAccY();
-    res[2] = getAccZ();
-}
-
-int16_t MMA8451Q::getAccAxis(uint8_t addr) {
-    int16_t acc;
-    uint8_t res[2];
-    readRegs(addr, res, 2);
-
-    acc = (res[0] << 6) | (res[1] >> 2);
-    if (acc > UINT14_MAX/2)
-        acc -= UINT14_MAX;
-
-    return acc;
-}
-
-void MMA8451Q::readRegs(int addr, uint8_t * data, int len) {
-    char t[1] = {addr};
-    m_i2c.write(m_addr, t, 1, true);
-    m_i2c.read(m_addr, (char *)data, len);
-}
-
-void MMA8451Q::writeRegs(uint8_t * data, int len) {
-    m_i2c.write(m_addr, (char *)data, len);
-}

diff -r 7812354ef684 -r 31f7a3426768 MMA8451Q8.h
--- a/MMA8451Q8.h	Wed Feb 22 15:35:47 2017 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,113 +0,0 @@
-/* Copyright (c) 2010-2011 mbed.org, 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.
-*/
-
-#ifndef MMA8451Q_H
-#define MMA8451Q_H
-
-#include "mbed.h"
-
-/**
-* MMA8451Q accelerometer example
-*
-* @code
-* #include "mbed.h"
-* #include "MMA8451Q.h"
-* 
-* #define MMA8451_I2C_ADDRESS (0x1d<<1)
-* 
-* int main(void) {
-* 
-* MMA8451Q acc(P_E25, P_E24, MMA8451_I2C_ADDRESS);
-* PwmOut rled(LED_RED);
-* PwmOut gled(LED_GREEN);
-* PwmOut bled(LED_BLUE);
-* 
-*     while (true) {       
-*         rled = 1.0 - abs(acc.getAccX());
-*         gled = 1.0 - abs(acc.getAccY());
-*         bled = 1.0 - abs(acc.getAccZ());
-*         wait(0.1);
-*     }
-* }
-* @endcode
-*/
-class MMA8451Q
-{
-public:
-  /**
-  * MMA8451Q constructor
-  *
-  * @param sda SDA pin
-  * @param sdl SCL pin
-  * @param addr addr of the I2C peripheral
-  */
-  MMA8451Q(PinName sda, PinName scl, int addr);
-
-  /**
-  * MMA8451Q destructor
-  */
-  ~MMA8451Q();
-
-  /**
-   * Get the value of the WHO_AM_I register
-   *
-   * @returns WHO_AM_I value
-   */
-  uint8_t getWhoAmI();
-
-  /**
-   * Get X axis acceleration
-   *
-   * @returns X axis acceleration
-   */
-  float getAccX();
-
-  /**
-   * Get Y axis acceleration
-   *
-   * @returns Y axis acceleration
-   */
-  float getAccY();
-
-  /**
-   * Get Z axis acceleration
-   *
-   * @returns Z axis acceleration
-   */
-  float getAccZ();
-
-  /**
-   * Get XYZ axis acceleration
-   *
-   * @param res array where acceleration data will be stored
-   */
-  void getAccAllAxis(float * res);
-
-
-  I2C m_i2c;
-  int m_addr;
-  void readRegs(int addr, uint8_t * data, int len);
-  void writeRegs(uint8_t * data, int len);
-  void setGLimit(); 
-  
-private: 
-  int16_t getAccAxis(uint8_t addr);
-
-};
-
-#endif

diff -r 7812354ef684 -r 31f7a3426768 MMA8451Q8b.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MMA8451Q8b.cpp	Wed Mar 08 04:11:07 2017 +0000
@@ -0,0 +1,125 @@
+/* Copyright (c) 2010-2011 mbed.org, 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.
+*/
+// Modify to change full scale gravity range 141207 sc
+
+
+#include "MMA8451Q8b.h"
+
+#define REG_WHO_AM_I      0x0D
+#define REG_CTRL_REG_1    0x2A
+#define REG_OUT_X_MSB     0x01
+#define REG_OUT_Y_MSB     0x03
+#define REG_OUT_Z_MSB     0x05
+#define XYZ_DATA_CFG      0x0E
+
+#define UINT14_MAX        16383
+
+#define MAX_2G            0x00
+#define MAX_4G            0x01
+#define MAX_8G            0x02
+
+#define NUM_DATA            2
+#define GSCALING          1024.0
+#define ADDRESS_INDEX       0
+#define DATA_INDEX          1
+
+float gScaling[3] = {4095.0, 2048.0, 1024.0};   //scalin for acceleration of gravity values
+
+MMA8451Q::MMA8451Q(PinName sda, PinName scl, int addr) : m_i2c(sda, scl), m_addr(addr) {
+    // activate the peripheral
+    uint8_t data[2] = {REG_CTRL_REG_1, 0x01};
+    writeRegs(data, 2);
+}
+
+MMA8451Q::~MMA8451Q() { }
+
+uint8_t MMA8451Q::getWhoAmI() {
+    uint8_t who_am_i = 0;
+    readRegs(REG_WHO_AM_I, &who_am_i, 1);
+    return who_am_i;
+}
+
+void MMA8451Q::setStandbyMode() {
+#define ACTIVEMASK 0x01
+    uint8_t registerData[1];
+    uint8_t data[NUM_DATA] = {REG_CTRL_REG_1, 0x00};
+    
+    readRegs(REG_CTRL_REG_1, registerData, 1);
+    data[1] = registerData[0] & ~ACTIVEMASK;
+    writeRegs(data, NUM_DATA);  //put in standby    
+}
+
+void MMA8451Q::setActiveMode(){
+#define ACTIVEMASK 0x01
+    uint8_t registerData[1];
+    uint8_t data[NUM_DATA] = {REG_CTRL_REG_1, 0x00};
+    
+    readRegs(REG_CTRL_REG_1, registerData, 1);
+    data[1] = registerData[0] | ACTIVEMASK;
+    writeRegs(data, NUM_DATA);  //put in standby
+}
+
+void MMA8451Q::setGLimit(int gSelect) {   
+    uint8_t data[NUM_DATA] = {REG_CTRL_REG_1, 0x00};
+    gChosen = gSelect;
+    setStandbyMode();
+    data[ADDRESS_INDEX] = XYZ_DATA_CFG;
+    data[DATA_INDEX] = gChosen;
+    writeRegs(data, 2);// change g limit
+    setActiveMode();
+}
+
+float MMA8451Q::getAccX() {
+    return (float(getAccAxis(REG_OUT_X_MSB))/GSCALING);
+}
+
+float MMA8451Q::getAccY() {
+    return (float(getAccAxis(REG_OUT_Y_MSB))/GSCALING);
+}
+
+float MMA8451Q::getAccZ() {
+    return (float(getAccAxis(REG_OUT_Z_MSB))/GSCALING);
+}
+
+void MMA8451Q::getAccAllAxis(float * res) {
+    res[0] = getAccX();
+    res[1] = getAccY();
+    res[2] = getAccZ();
+}
+
+int16_t MMA8451Q::getAccAxis(uint8_t addr) {
+    int16_t acc;
+    uint8_t res[2];
+    readRegs(addr, res, 2);
+
+    acc = (res[0] << 6) | (res[1] >> 2);
+    if (acc > UINT14_MAX/2)
+        acc -= UINT14_MAX;
+
+    return acc;
+}
+
+void MMA8451Q::readRegs(int addr, uint8_t * data, int len) {
+    char t[1] = {addr};
+    m_i2c.write(m_addr, t, 1, true);
+    m_i2c.read(m_addr, (char *)data, len);
+}
+
+void MMA8451Q::writeRegs(uint8_t * data, int len) {
+    m_i2c.write(m_addr, (char *)data, len);
+}

diff -r 7812354ef684 -r 31f7a3426768 MMA8451Q8b.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MMA8451Q8b.h	Wed Mar 08 04:11:07 2017 +0000
@@ -0,0 +1,122 @@
+/* Copyright (c) 2010-2011 mbed.org, 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.
+*/
+
+#ifndef MMA8451QB_H
+#define MMA8451QB_H
+
+#include "mbed.h"
+
+/**
+* MMA8451Q accelerometer example
+*
+* @code
+* #include "mbed.h"
+* #include "MMA8451Q.h"
+* 
+* #define MMA8451_I2C_ADDRESS (0x1d<<1)
+* 
+* int main(void) {
+* 
+* MMA8451Q acc(P_E25, P_E24, MMA8451_I2C_ADDRESS);
+* PwmOut rled(LED_RED);
+* PwmOut gled(LED_GREEN);
+* PwmOut bled(LED_BLUE);
+* 
+*     while (true) {       
+*         rled = 1.0 - abs(acc.getAccX());
+*         gled = 1.0 - abs(acc.getAccY());
+*         bled = 1.0 - abs(acc.getAccZ());
+*         wait(0.1);
+*     }
+* }
+* @endcode
+*/
+class MMA8451Q
+{
+public:
+  /**
+  * MMA8451Q constructor
+  *
+  * @param sda SDA pin
+  * @param sdl SCL pin
+  * @param addr addr of the I2C peripheral
+  */
+  MMA8451Q(PinName sda, PinName scl, int addr);
+
+  /**
+  * MMA8451Q destructor
+  */
+  ~MMA8451Q();
+
+  /**
+   * Get the value of the WHO_AM_I register
+   *
+   * @returns WHO_AM_I value
+   */
+  uint8_t getWhoAmI();
+
+  /**
+   * Get X axis acceleration
+   *
+   * @returns X axis acceleration
+   */
+  float getAccX();
+
+  /**
+   * Get Y axis acceleration
+   *
+   * @returns Y axis acceleration
+   */
+  float getAccY();
+
+  /**
+   * Get Z axis acceleration
+   *
+   * @returns Z axis acceleration
+   */
+  float getAccZ();
+
+  /**
+   * Get XYZ axis acceleration
+   *
+   * @param res array where acceleration data will be stored
+   */
+  void getAccAllAxis(float * res);
+  
+  int16_t getAccAxis(uint8_t addr);
+
+
+  I2C m_i2c;
+  int m_addr;
+  int gChosen;
+  
+
+  //Allow the user to set max g's
+    void setGLimit(int gSelect); 
+    void setStandbyMode();
+    void setActiveMode();
+    void readRegs(int addr, uint8_t * data, int len);
+    void writeRegs(uint8_t * data, int len);
+  
+private: 
+  
+
+
+};
+
+#endif