Diff: MMA8451Q.cpp

Revision:

5:df36b750371a

Parent:

3:db7126dbd63f

--- a/MMA8451Q.cpp	Fri Oct 12 11:35:07 2012 +0000
+++ b/MMA8451Q.cpp	Wed Feb 22 09:49:41 2017 +0000
@@ -16,6 +16,8 @@
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
+
+
 #include "MMA8451Q.h"
 
 #define REG_WHO_AM_I      0x0D
@@ -23,9 +25,16 @@
 #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            0x10
+
+#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};
@@ -40,6 +49,7 @@
     return who_am_i;
 }
 
+
 float MMA8451Q::getAccX() {
     return (float(getAccAxis(REG_OUT_X_MSB))/4096.0);
 }
@@ -79,3 +89,13 @@
 void MMA8451Q::writeRegs(uint8_t * data, int len) {
     m_i2c.write(m_addr, (char *)data, len);
 }
+void MMA8451Q::setGLimit()  {
+    uint8_t data[2] = {REG_CTRL_REG_1, 0x00};
+    writeRegs(data, 2);
+    data[0] = XYZ_DATA_CFG;
+    data[1] = 0x02;
+    writeRegs(data, 2);
+    data[0] = REG_CTRL_REG_1;
+    data[1] = 0x01;
+    writeRegs(data, 2);
+}
\ No newline at end of file