Jim Carver / FXOS8700Q

A basic library for the FXOS8700Q combination accelerometer / magnetometer

Dependencies:   MotionSensor

Dependents:   K64F_eCompass_LCD Hello_FXOS8700Q rtos_compass K64F_eCompass ... more

This library supports the 6 axis combination Accelerometer / Magnetometer. Functions are provided to retrieve data in raw 16 bit signed integers or unit converted G's and micro-teslas

Files at this revision

API Documentation at this revision

Revision 2:ab84f99086e5, committed 2014-04-14

Comitter:
JimCarver
Date:
Mon Apr 14 17:13:15 2014 +0000
Parent:
1:8b53edef272f
Commit message:
Minor feature change

Changed in this revision

FXOS8700Q.cpp Show annotated file Show diff for this revision Revisions of this file
FXOS8700Q.h Show annotated file Show diff for this revision Revisions of this file 
--- a/FXOS8700Q.cpp	Sun Apr 13 21:22:58 2014 +0000
+++ b/FXOS8700Q.cpp	Mon Apr 14 17:13:15 2014 +0000
@@ -3,8 +3,16 @@
 
 
 FXOS8700Q::FXOS8700Q(PinName sda, PinName scl, int addr) : m_i2c(sda, scl), m_addr(addr) {
+
+}
+
+
+FXOS8700Q::~FXOS8700Q() { }
+
+void FXOS8700Q::enable(void) {
     // activate the peripheral
     uint8_t data[2] = {FXOS8700Q_CTRL_REG1, 0x00};
+    m_i2c.frequency(400000);
     writeRegs(data, 2);
     data[0] = FXOS8700Q_M_CTRL_REG1;
     data[1] = 0x1F;
@@ -18,11 +26,8 @@
     data[0] = FXOS8700Q_CTRL_REG1;
     data[1] = 0x19;//0x1D;
     writeRegs(data, 2);
-}
-
-
-FXOS8700Q::~FXOS8700Q() { }
-
+    }
+    
 uint8_t FXOS8700Q::getWhoAmI() {
     uint8_t who_am_i = 0;
     readRegs(FXOS8700Q_WHOAMI, &who_am_i, 1);
@@ -30,15 +35,15 @@
 }
 
 float FXOS8700Q::getAccX() {
-    return (float(getAccAxis(FXOS8700Q_OUT_X_MSB))/4096.0);
+    return (float(getAccAxis(FXOS8700Q_OUT_X_MSB))/4096.0f);
 }
 
 float FXOS8700Q::getAccY() {
-    return (float(getAccAxis(FXOS8700Q_OUT_Y_MSB))/4096.0);
+    return (float(getAccAxis(FXOS8700Q_OUT_Y_MSB))/4096.0f);
 }
 
 float FXOS8700Q::getAccZ() {
-    return (float(getAccAxis(FXOS8700Q_OUT_Z_MSB))/4096.0);
+    return (float(getAccAxis(FXOS8700Q_OUT_Z_MSB))/4096.0f);
 }
 
 
@@ -96,7 +101,7 @@
 }
 
 void FXOS8700Q::writeRegs(uint8_t * data, int len) {
-    m_i2c.write(m_addr, (char *)data, len);
+    if(m_i2c.write(m_addr, (char *)data, len)) printf("WRite Error\r\n");
 }
 
     
\ No newline at end of file

--- a/FXOS8700Q.h	Sun Apr 13 21:22:58 2014 +0000
+++ b/FXOS8700Q.h	Mon Apr 14 17:13:15 2014 +0000
@@ -73,6 +73,7 @@
    *
    * @param res array where acceleration data will be stored
    */
+   void enable(void);
   void getAccAllAxis(float * res);
   void AccXYZraw(int16_t * d);
   void MagXYZraw(int16_t * d);