Diff: LSM9DS1.cpp

Revision:

2:bf33a982a078

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LSM9DS1.cpp	Sun Jul 08 11:19:00 2018 +0200
@@ -0,0 +1,357 @@
+/*
+ * LSM9DS1_Sensor.c
+ *
+ * Created: 05/01/2015 19:49:04
+ *  Author: speirano
+ */
+
+//#include "Wire.h"
+#include "LSM9DS1Reg.h"
+#include "LSM9DS1.h"
+#include "mbed.h"
+
+
+
+
+float  a_lsb_sentivity = A_LSB_SENSIT_2MG;     //  FC[1:0] register set to 0
+inline float LSM9DS1_get_a_lsb_sensitivity(void) {
+    return a_lsb_sentivity;
+}
+
+float  g_lsb_sentivity = G_LSB_SENSIT_245MDPS; //  FC[1:0] register set to 0
+inline float LSM9DS1_get_g_lsb_sentivity(void) {
+    return g_lsb_sentivity;
+}
+
+float  m_lsb_sentivity = M_LSB_SENSIT_4MG;     //  FC[1:0] register set to 0
+inline float LSM9DS1_get_m_lsb_sentivity(void) {
+    return m_lsb_sentivity;
+}
+
+
+// Read a single byte from addressToRead and return it as a byte
+uint8_t LSM9DS1::readRegister(uint8_t slaveAddress, uint8_t regToRead)
+{/*
+    Wire.beginTransmission(slaveAddress);
+    Wire.write(regToRead);
+    Wire.endTransmission(false); //endTransmission but keep the connection active
+
+    Wire.requestFrom(slaveAddress, 1); //Ask for 1 byte, once done, bus is released by default
+
+    while(!Wire.available()) ; //Wait for the data to come back
+    return Wire.read(); //Return this one byte*/
+    
+
+
+
+    return 0; //FOR TEST 
+}
+
+// Writes a single byte (dataToWrite) into regToWrite
+bool LSM9DS1::writeRegister(uint8_t slaveAddress, uint8_t regToWrite, uint8_t dataToWrite)
+{/*
+    uint8_t errorNo;
+    Wire.beginTransmission(slaveAddress);
+
+    if (!Wire.write(regToWrite)) {
+        return false;
+    }
+    if (!Wire.write(dataToWrite)) {
+        return false;
+    }
+
+    errorNo = Wire.endTransmission(); //Stop transmitting
+    return (errorNo == 0);*/
+
+  
+    return 0; //FOR TEST 
+}
+
+
+LSM9DS1::LSM9DS1(unsigned int address) : _address(address)
+{
+    _ready_reg  = 0;
+    _status_reg = 0;
+    _x = 0;
+    _y = 0;
+    _z = 0;
+}
+
+bool
+LSM9DS1::readInternal(unsigned char high_reg, unsigned char low_reg, int *value)
+{
+    uint16_t data = 0;
+    unsigned char  read = 0;
+    int16_t signed_data = 0;
+
+    for (;;) {
+        read = readRegister(addr(), _status_reg);
+        if (read & _ready_reg) {
+            read = readRegister(addr(), low_reg);
+            data = read;      // LSB
+
+            read = readRegister(addr(), high_reg);
+            data |= read << 8; // MSB
+
+            signed_data = data;
+            *value = signed_data;
+            return true;
+
+        } else {
+            wait_ms (1);
+        }
+    }
+
+    return false;
+}
+
+
+/*****************************************************************************/
+/*                         Accelerometer / Gyroscope                         */
+/*****************************************************************************/
+
+
+LSM9DS1_A::LSM9DS1_A(void) : LSM9DS1(LSM9DS1_AG_ADDRESS)
+{
+    _ready_reg  = AG_ACCELEROMETER_READY;
+    _status_reg = AG_STATUS_REG;
+}
+
+bool LSM9DS1_A::begin(void)
+{
+    uint8_t data;
+
+    data = readRegister(addr(), AG_WHO_AM_I);
+    if (data == AG_WHO_AM_I_RETURN){
+        if (activate()){
+            return true;
+        }
+    }
+    return false;
+}
+
+bool
+LSM9DS1_A::activate(void)
+{
+    uint8_t data;
+
+    data = readRegister(addr(), AG_CTRL_REG1_G);
+    //data |= POWER_UP;
+    data |= AG_ODR_SET;
+    writeRegister(addr(), AG_CTRL_REG1_G, data);
+
+    return true;
+}
+
+bool LSM9DS1_A::deactivate(void)
+{
+    uint8_t data;
+
+    data = readRegister(addr(), AG_CTRL_REG1_G);
+    data &= ~AG_ODR_SET;
+    writeRegister(addr(), AG_CTRL_REG1_G, data);
+
+    return true;
+}
+
+
+int
+LSM9DS1_A::readX()
+{
+    int data = 0;
+    if (readInternal(AG_ACC_X_H, AG_ACC_X_L, &data)) {
+        _x = data;
+    }
+    // Decode Accel x-axis  [mdps measurement unit]
+    return (a_lsb_sentivity * _x);
+}
+
+int
+LSM9DS1_A::readY()
+{
+    int data = 0;
+    if (readInternal(AG_ACC_Y_H, AG_ACC_Y_L, &data)) {
+        _y = data;
+    }
+    // Decode Accel y-axis  [mdps measurement unit]
+    return (a_lsb_sentivity * _y);
+}
+
+int
+LSM9DS1_A::readZ()
+{
+    int data = 0;
+    if (readInternal(AG_ACC_Z_H, AG_ACC_Z_L, &data)) {
+        _z = data;
+    }
+    // Decode Accel z-axis  [mdps measurement unit]
+    return (a_lsb_sentivity * _z);
+}
+
+LSM9DS1_G::LSM9DS1_G(void) : LSM9DS1(LSM9DS1_AG_ADDRESS)
+{
+    _ready_reg  = AG_GYROSCOPE_READY;
+    _status_reg = AG_STATUS_REG;
+}
+
+
+bool LSM9DS1_G::begin(void)
+{
+    uint8_t data;
+
+    data = readRegister(addr(), AG_WHO_AM_I);
+    if (data == AG_WHO_AM_I_RETURN){
+        if (activate()){
+            return true;
+        }
+    }
+    return false;
+}
+
+bool
+LSM9DS1_G::activate(void)
+{
+    uint8_t data;
+
+    data = readRegister(addr(), AG_CTRL_REG1_G);
+    //data |= POWER_UP;
+    data |= AG_ODR_SET;
+    writeRegister(addr(), AG_CTRL_REG1_G, data);
+
+    return true;
+}
+
+bool LSM9DS1_G::deactivate(void)
+{
+    uint8_t data;
+
+    data = readRegister(addr(), AG_CTRL_REG1_G);
+    data &= ~AG_ODR_SET;
+    writeRegister(addr(), AG_CTRL_REG1_G, data);
+    return true;
+}
+
+
+int
+LSM9DS1_G::readX()
+{
+    int data = 0;
+    if (readInternal(AG_GYR_X_H, AG_GYR_X_L, &data)) {
+        _x = data;
+    }
+    // Decode Gyroscope x-axis  [mdps measurement unit]
+    return (g_lsb_sentivity * _x);
+}
+
+int
+LSM9DS1_G::readY()
+{
+    int data = 0;
+    if (readInternal(AG_GYR_Y_H, AG_GYR_Y_L, &data)) {
+        _y = data;
+    }
+    // Decode Gyroscope y-axis  [mdps measurement unit]
+    return (g_lsb_sentivity * _y);
+}
+
+int
+LSM9DS1_G::readZ()
+{
+    int data = 0;
+    if (readInternal(AG_GYR_Z_H, AG_GYR_Z_L, &data)) {
+        _z = data;
+    }
+    // Decode Gyroscope z-axis  [mdps measurement unit]
+    return (g_lsb_sentivity * _z);
+}
+
+
+/*****************************************************************************/
+/*                                Magnetometer                               */
+/*****************************************************************************/
+
+LSM9DS1_M::LSM9DS1_M(void) : LSM9DS1(LSM9DS1_M_ADDRESS)
+{
+    _ready_reg  = M_ZYX_AXIS_READY;
+    _status_reg = M_STATUS_REG;
+}
+
+bool LSM9DS1_M::begin(void)
+{
+    uint8_t data;
+
+    data = readRegister(addr(), M_WHO_AM_I);
+    if (data == M_WHO_AM_I_RETURN){
+        if (activate()){
+            return true;
+        }
+    }
+    return false;
+}
+
+bool
+LSM9DS1_M::activate(void)
+{
+    uint8_t data;
+
+    data = readRegister(addr(), M_CTRL_REG3_G);
+    //data |= POWER_UP;
+    //data |= 0x21;
+    data &= ~M_OPER_MODE_DIS;
+    //data &= (0xFC);
+
+    writeRegister(addr(), M_CTRL_REG3_G, data);
+
+    return true;
+}
+
+bool
+LSM9DS1_M::deactivate(void)
+{
+    uint8_t data;
+    data = readRegister(addr(), M_CTRL_REG3_G);
+    //data |= POWER_UP;
+    //data |= 0x21;
+    data |= M_OPER_MODE_DIS;
+    writeRegister(addr(), M_CTRL_REG3_G, data);
+
+    return true;
+}
+
+int
+LSM9DS1_M::readX()
+{
+    int data = 0;
+    if (readInternal(M_X_H, M_X_L, &data)) {
+        _x = data;
+    }
+    // Decode magnetic x-axis  [mgauss measurement unit]
+    return (m_lsb_sentivity * _x);
+}
+
+int
+LSM9DS1_M::readY()
+{
+    int data = 0;
+    if (readInternal(M_Y_H, M_Y_L, &data)) {
+        _y = data;
+    }
+    // Decode magnetic y-axis  [mgauss measurement unit]
+    return (m_lsb_sentivity * _y);
+}
+
+int
+LSM9DS1_M::readZ()
+{
+    int data = 0;
+    if (readInternal(M_Z_H, M_Z_L, &data)) {
+        _z = data;
+    }
+    // Decode magnetic z-axis  [mgauss measurement unit]
+    return (m_lsb_sentivity * _z);
+}
+
+
+LSM9DS1_A smeAccelerometer;
+LSM9DS1_M smeMagnetic;
+LSM9DS1_G smeGyroscope;