MAX30003.cpp

00001 /*******************************************************************************
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00033  
00034  
00035 #include "MAX30003.h"
00036  
00037  
00038 //****************************************************************************
00039 MAX30003::MAX30003(SPI &spiBus, PinName cs):
00040 m_spiBus(spiBus), m_cs(cs, 1)
00041 {
00042     //empty block
00043 }
00044 
00045 //****************************************************************************
00046 MAX30003::~MAX30003()
00047 {
00048     //empty block
00049 }
00050 
00051 //****************************************************************************
00052 uint32_t MAX30003::readRegister(const Registers_e reg)
00053 {
00054     uint32_t data = 0;
00055     
00056     m_cs = 0;
00057     m_spiBus.write((reg << 1) | 1);
00058     data |= (m_spiBus.write(0xFF) << 16);
00059     data |= (m_spiBus.write(0xFF) << 8);
00060     data |= m_spiBus.write(0xFF);
00061     m_cs = 1;
00062     
00063     return data;
00064 }
00065 
00066 //****************************************************************************    
00067 void MAX30003::writeRegister(const Registers_e reg, const uint32_t data)
00068 {
00069     m_cs = 0;
00070     m_spiBus.write(reg << 1);
00071     m_spiBus.write((0x00FF0000 & data) >> 16);
00072     m_spiBus.write((0x0000FF00 & data) >> 8);
00073     m_spiBus.write( 0x000000FF & data);
00074     m_cs = 1;
00075 }
00076