Bresdin O'Malley / MMA8451Q8_v2

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Fork of MMA8451Q8_v1 by Bresdin O'Malley

Files at this revision

API Documentation at this revision

Revision 8:993bb9e96a4b, committed 2015-02-03

Comitter:
scohennm
Date:
Tue Feb 03 17:59:00 2015 +0000
Parent:
7:ed7e11d269f8
Child:
9:84011f06d1ea
Commit message:
set pulse configuraton

Changed in this revision

MMA8451Q8.cpp Show annotated file Show diff for this revision Revisions of this file
MMA8451Q8.h Show annotated file Show diff for this revision Revisions of this file 
--- a/MMA8451Q8.cpp	Wed Jan 28 21:39:04 2015 +0000
+++ b/MMA8451Q8.cpp	Tue Feb 03 17:59:00 2015 +0000
@@ -26,6 +26,9 @@
 #define REG_OUT_Y_MSB     0x03
 #define REG_OUT_Z_MSB     0x05
 #define XYZ_DATA_CFG      0x0E
+// adding tap config register adderesses
+#define REG_PULSE_SRC     0x22
+#define REG_PULSE_CFG     0x21
 
 #define UINT14_MAX        16383
 
@@ -64,7 +67,21 @@
     data[DATA_INDEX] = 0x01;
     writeRegs(data, 2); // make active
 }
-
+// add Puse configuratioin register access
+// Also add function prototype to .h file
+void MMA8451Q::setPulseConfiguration(uint8_t latch,uint8_t axisSet) {
+    uint8_t configBits;   
+    uint8_t data[NUM_DATA] = {REG_CTRL_REG_1, 0x00}; // put in standby mode
+// set up configuration bits.
+    configBits = latch | axisSet;
+    writeRegs(data, NUM_DATA); // put in standby
+    data[ADDRESS_INDEX ] = REG_PULSE_CFG;
+    data[DATA_INDEX] = configBits;
+    writeRegs(data, NUM_DATA);
+    data[ADDRESS_INDEX ] = REG_CTRL_REG_1; // put back in active mode
+    data[DATA_INDEX] = 0x01;
+    writeRegs(data, 2); // make active
+}
 float MMA8451Q::getAccX() {
     return (float(getAccAxis(REG_OUT_X_MSB))/gScaling[gChosen]);
 }

--- a/MMA8451Q8.h	Wed Jan 28 21:39:04 2015 +0000
+++ b/MMA8451Q8.h	Tue Feb 03 17:59:00 2015 +0000
@@ -110,6 +110,8 @@
   Allow user to set max g's
   **/ 
   void setGLimit(int gSelect); 
+  // added in .cpp file for tap configuration
+  void setPulseConfiguration(uint8_t latch,uint8_t axisSet);
   void readRegs(int addr, uint8_t * data, int len);
   void writeRegs(uint8_t * data, int len);