sandeep ponnuru / Mbed 2 deprecated DanTkr

An integrated code base for smart watch model using nrf51822. Used the efforts from Roger Clark, Goran Mahovlic, Nordic team SDKs and mbed repos on OLED. Programming: The watch prototype can be interfaced to Tiny Seeed BLE programmer (left of the Tiny Seeed BLE board). Connect SWDIO, SWD CLK, Vin and GND pins. For USB debugging also connect RX and TX pins. Used Roger's nice webpage to come up with the pin mapping and many other HW insights. http://www.rogerclark.net/arduino-on-the-id100hr-fitness-tracker/

Dependencies:   BLE_API SFE_MicroOLED_debugPrint mbed nRF51822

Fork of BLE_TemperatureAdvertising by xiao sun

KX022_RBL/KX22.cpp

Committer:
sandyr7
Date:
2017-12-23
Revision:
5:8c21994db8d2

File content as of revision 5:8c21994db8d2:


#include "KX22.h"
#include "mbed.h"
extern Serial pc; 


 KX22::KX22(uint8_t SCL, uint8_t SDA){
    
    scl = SCL;
    sda = SDA;
    
    TwoWire* wire = new TwoWire(NRF_TWI1);
    (*wire).begin(scl, sda, TWI_FREQUENCY_100K);
    
    writeTwoBytes(KX22_Accel_CNTL1_1,KX22_Accel_CNTL1_2,wire);
    writeTwoBytes(KX22_Accel_ODCNTL_1,KX22_Accel_ODCNTL_2,wire);
    writeTwoBytes(KX22_Accel_CNTL3_1,KX22_Accel_CNTL3_2,wire);
    writeTwoBytes(KX22_Accel_TILT_TIMER_1,KX22_Accel_TILT_TIMER_2,wire);
    writeTwoBytes(KX22_Accel_CNTL2_1,KX22_Accel_CNTL2_2,wire);
    
    delete(wire);

}

void KX22::writeTwoBytes (int one, int two, TwoWire* wire)
{
    (*wire).beginTransmission(KX22_addr_w);
    (*wire).write(one);
    (*wire).write(two);
    (*wire).endTransmission();
}
//void writeTwoBytes (int one, int two)
int KX22::getByte (int address, TwoWire* wire)
{
  int readedValue= 0;
  (*wire).beginTransmission(KX22_addr_w);
  (*wire).write(address);
  (*wire).endTransmission();
  (*wire).requestFrom(KX22_addr_r , 1);  // Or-ed with "1" for read bit
  if(1 <= (*wire).available())    // if two bytes were received
  {
    readedValue = (*wire).read();
  }
  return readedValue;
}

//void writeTwoBytes (int one, int two)
//int getByte (int address)
int16_t KX22::getAccel(int channelNum)
{
  TwoWire* wire = new TwoWire(NRF_TWI1);
    (*wire).begin(scl, sda, TWI_FREQUENCY_100K);
    
  //pc.printf("Inside the getAccel: channel=%d\n",channelNum);
  int16_t accVal = (int16_t)( getByte(DATA_OUT_BASE+1 + 2*channelNum,wire)<<8 | 
                     getByte(DATA_OUT_BASE + 2*channelNum,wire) );
  //pc.printf("int code for accel value is %d\n",accVal);
  //pc.printf("float val is 1/100 of %d\n",(int16_t) 100*tmp/16384.0);
  delete(wire);
  accVal = (int16_t) (accVal*10000.0/16384.0);
  return  accVal; //(int16_t) 100*tmp/16384.0;  
}