Diff: MAX30101.h

Revision:

3:4bfb42d6c70c

Parent:

2:98ea52282575

Child:

4:3be008e67345

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MAX30101.h	Tue Aug 30 22:13:28 2016 +0000
@@ -0,0 +1,228 @@
+#ifndef MAX30101_H
+#define MAX30101_H
+#include "mbed.h"
+
+#define MAX30101_I2C_ADDRESS (0xAE<<1) //pins SA0,SA1=0
+
+#define MAXIM_BYTES_PER_ADC_VALUE ( 3 )
+#define MAXIM_FIFO_DEPTH          ( 32 )
+
+#define MAX30101_InterruptStatus1                       0x00
+#define MAX30101_InterruptStatus2                       0x01
+#define MAX30101_InterruptEnable1                       0x02
+#define MAX30101_InterruptEnable2                       0x03
+
+#define MAX30101_FIFO_WR_PTR                            0x04
+#define MAX30101_FIFO_OV_PTR                            0x05
+#define MAX30101_FIFO_RD_PTR                            0x06
+#define MAX30101_FIFO_DATA                              0x07
+#define MAX30101_FIFOConfiguration                      0x08
+#define MAX30101_ModeConfiguration                      0x09
+#define MAX30101_SPO2Configuration                      0x0A
+#define MAX30101_LED1RedPulseAmplitude                  0x0C
+#define MAX30101_LED2IrPulseAmplitude                   0x0D
+#define MAX30101_LED3GreenPulseAmplitude                0x0E
+#define MAX30101_ProximityModePulseAmplitude            0x10
+#define MAX30101_MultiLEDModeControlTime2Time1          0x11
+#define MAX30101_MultiLEDModeControlTime4Time3          0x12
+#define MAX30101_DieTemperatureInteger                  0x1F
+#define MAX30101_DieTemperatureFraction                 0x20
+#define MAX30101_DieTemperatureConfig                   0x21
+#define MAX30101_ProximityInterruptThreshold            0x30
+#define MAX30101_RevisionID                             0xFE
+#define MAX30101_DeviceID                               0xFF
+
+/******************************************************************************/
+#define A_FULL          0x80
+#define PPG_RD          0x40
+#define ALC_OVF         0x20
+#define PROX_IN         0x10
+#define PWR_RDY         0x01
+
+#define DIE_TEMP_RDY    0x02
+
+#define A_FULL_EN       0x80
+#define PPG_RDY_EN      0x40
+#define ALC_OVF_EN1     0x20
+#define ALC_OVF_EN0     0x10
+
+#define DIE_TEMP_RDY_EN 0x02
+
+#define SHDN            0x80
+#define RESET           0x40
+#define MODE1           0x02
+#define MODE0           0x01
+
+#define SPO2_ADC_RGE1   0x40 
+#define SPO2_ADC_RGE0   0x20
+#define SPO2_SR2        0x10
+#define SPO2_SR1        0x08
+#define SPO2_SR0        0x04
+#define LED_PW1         0x02
+#define LED_PW0         0x01
+
+#define TEMP_EN         0x01
+
+/******************************************************************************/
+
+#define MAXIM_SLOT_NUM  2
+
+typedef enum
+{
+  modeHR        = 0x2,
+  modeSPO2      = 0x3,
+  modeMultiLED  = 0x7
+
+} max30101_mode_t;
+
+typedef enum
+{
+  ledPower_69  = 0x0, // ADC -> 15 bit
+  ledPower_118 = 0x1, // ADC -> 16 bit
+  ledPower_215 = 0x2, // ADC -> 17 bit
+  ledPower_411 = 0x3  // ADC -> 18 bit
+
+} max30101_ledpwr_t;
+
+
+/** HR global status enum */
+typedef enum
+{
+    HEART_RATE_STATUS_SUCCESS,
+    HEART_RATE_STATUS_ERROR
+
+} heartRate_status_t;
+
+typedef enum
+{
+  sampleRate_50   = 0x0,
+  sampleRate_100  = 0x1,
+  sampleRate_200  = 0x2,
+  sampleRate_400  = 0x3,
+  sampleRate_800  = 0x4,
+  sampleRate_1000 = 0x5,
+  sampleRate_1600 = 0x6,
+  sampleRate_3200 = 0x7
+
+} max30101_sampleRate_t;
+
+typedef enum
+{
+  LEDSlotNone  =  0x0,
+  LEDSlotRed   =  0x1,
+  LEDSlotIR    =  0x2,
+  LEDSlotGreen =  0x3
+
+} max30101_LEDSlot_t;
+
+typedef enum
+{
+  STATUS_MAXIM_SUCCESS,        // success
+  STATUS_MAXIM_ERROR,          // fail
+  STATUS_MAXIM_PROTOCOL_ERROR, // protocol failure
+  STATUS_MAXIM_INIT_ERROR,     // initialization error
+  STATUS_MAXIM_PARAM_ERROR,    // invalid parameter is given
+  STATUS_MAXIM_OVF_ERROR,      // sensor data overflow
+  STATUS_MAXIM_TIMEOUT         // timeout occured
+
+} max30101_status_t;
+
+typedef enum
+{
+  adcRange2048  = 0x0,
+  adcRange4096  = 0x1,
+  adcRange8192  = 0x2,
+  adcRange16384 = 0x3
+
+} max30101_adcRange_t;
+
+typedef enum
+{
+  ovsNone = 0x0, // no averaging
+  ovs2    = 0x1, // average 2 samples
+  ovs4    = 0x2, // average 4 samples
+  ovs8    = 0x3, // average 8 samples
+  ovs16   = 0x4, // average 16 samples
+  ovs32   = 0x5  // average 32 samples
+
+} max30101_ovs_t;
+
+#define HR_SAMPLE_RATE ( 50 ) /** sample rate for MAXIM 30101 sensor */
+
+
+class MAX30101
+{
+public:
+  /**
+  * MAX30101 constructor
+  *
+  * @param sda SDA pin
+  * @param sdl SCL pin
+  * @param addr addr of the I2C peripheral
+  */
+  MAX30101(PinName sda, PinName scl,  int addr);
+ 
+  /**
+  * MAX30101 destructor
+  */
+  ~MAX30101();
+
+    void enable(void);
+     
+    void shutdown(void);
+    
+    max30101_status_t reset(void);
+        
+    void setMode(max30101_mode_t sensorMode);
+    
+    void setSPO2_ADC_range(void);
+    
+    void set_SPO2_sampleRange(void);
+    
+    void set_LED_PulseWidth(uint8_t pw);
+    
+    max30101_status_t readRawData(uint8_t* dataBuff, uint8_t* sampleNum );
+    float getTemp(void);
+    
+    float getDieTemp(void);
+    
+    uint8_t  getRevisionID(void);
+
+    uint8_t getChipID(void);
+ 
+private:
+  I2C m_i2c;
+  int m_addr;
+  void readRegs(int addr, uint8_t * data, int len);
+  void writeRegs(uint8_t * data, int len);
+  
+  uint8_t readRegister( uint8_t regaddr);
+  void writeRegister(uint8_t regaddr, uint8_t data);
+  
+  // mode (HR, SpO2, or multi-led)
+  max30101_mode_t mode;
+
+  // multiLED slots
+  max30101_LEDSlot_t LEDSlot[ MAXIM_SLOT_NUM ];
+  uint8_t activeSlots;
+
+  // LED currents
+  uint8_t LEDCurrentRed;
+  uint8_t LEDCurrentIR;
+  uint8_t LEDCurrentGreen;
+
+  // timings
+  max30101_sampleRate_t sampleRate;
+  max30101_ledpwr_t pulseWidth;
+  // ADC range
+  max30101_adcRange_t range;
+  // averaging
+  max30101_ovs_t oversample;
+ 
+};
+ 
+#endif
+
+
+
+