OB1203.h

00001 #ifndef __OB1203_H__
00002 #define __OB1203_H__
00003 
00004 #include "mbed.h"
00005 //#include "SoftI2C.h"
00006 
00007 //#define DEBUG
00008 
00009 #define OB1203_ADDR 0xA6
00010 
00011 //Define registers
00012 #define REG_STATUS_0        0x00
00013 #define REG_STATUS_1        0x01
00014 #define REG_PS_DATA         0x02
00015 #define REG_LS_W_DATA       0x04
00016 #define REG_LS_G_DATA       0x07
00017 #define REG_LS_B_DATA       0x0A
00018 #define REG_LS_R_DATA       0x0D
00019 #define REG_LS_C_DATA       0x10
00020 #define REG_TEMP_DATA       0x13
00021 #define REG_MAIN_CTRL_0     0x15
00022 #define REG_MAIN_CTRL_1     0x16
00023 #define REG_PS_LED_CURR     0x17
00024 #define REG_PS_CAN_PULSES   0x19
00025 #define REG_PS_PWIDTH_RATE  0x1A
00026 #define REG_PS_CAN_DIG      0x1B
00027 #define REG_PS_MOV_AVG_HYS  0x1D
00028 #define REG_PS_THRES_HI     0x1E
00029 #define REG_PS_THRES_LO     0x20
00030 #define REG_LS_RES_RATE     0x22
00031 #define REG_LS_GAIN         0x23
00032 #define REG_LS_THRES_HI     0x24
00033 #define REG_LS_THRES_LO     0x27
00034 #define REG_LS_THRES_VAR    0x2A
00035 #define REG_INT_CFG_0       0x2B
00036 #define REG_PS_INT_CFG_1    0x2C
00037 #define REG_INT_PST         0x2D
00038 #define REG_PPG_PS_GAIN     0x2E
00039 #define REG_PPG_PS_CFG      0x2F
00040 #define REG_PPG_IRLED_CURR  0x30
00041 #define REG_PPG_RLED_CURR   0x32
00042 #define REG_PPG_CAN_ANA     0x34
00043 #define REG_PPG_AVG         0x35
00044 #define REG_PPG_PWIDTH_RATE 0x36
00045 #define REG_FIFO_CFG        0x37
00046 #define REG_FIFO_WR_PTR     0x38
00047 #define REG_FIFO_RD_PTR     0x39
00048 #define REG_FIFO_OVF_CNT    0x3A
00049 #define REG_FIFO_DATA  0x3B
00050 #define REG_PART_ID         0x3D
00051 #define REG_DEVICE_CFG      0x4D
00052 #define REG_OSC_TRIM        0x3E
00053 #define REG_LED_TRIM        0x3F
00054 #define REG_BIO_TRIM        0x40
00055 #define REG_DIG_LED1_TRIM   0x42
00056 #define REG_DIG_LED2_TRIM   0x43
00057 
00058 //Define settings
00059 //STATUS_0
00060 #define POR_STATUS          0x80
00061 #define LS_INT_STATUS       0x02
00062 #define LS_NEW_DATA         0x01
00063 //STATUS_1
00064 #define LED_DRIVER_STATUS   0x40
00065 #define FIFO_AFULL_STATUS   0x20
00066 #define PPG_DATA_STATUS     0x10
00067 #define PS_LOGIC_STATUS     0x04
00068 #define PS_INT_STATUS       0x02
00069 #define PS_NEW_DATA         0x01
00070 //MAIN_CTRL_0
00071 #define SW_RESET            0x01<<7
00072 #define LS_SAI_ON           0x01<<3
00073 #define LS_SAI_OFF          0x00
00074 #define ALS_MODE            0x00
00075 #define RGB_MODE            0x01<<1
00076 #define LS_OFF              0x00
00077 #define LS_ON               0x01
00078 //MAIN_CTRL_1
00079 #define PS_SAI_ON           0x01<<3
00080 #define PS_SAI_OFF          0x00
00081 #define PS_MODE             0x00
00082 #define HR_MODE             0x01<<1
00083 #define SPO2_MODE           0x02<<1
00084 #define PPG_PS_ON           0x01
00085 #define PPG_PS_OFF          0x00
00086 #define TEMP_ON             0x01<<7
00087 #define TEMP_OFF            0x00
00088 //PS_CAN_PULSES
00089 #define PS_CAN_ANA_0        0x00 //off
00090 #define PS_CAN_ANA_1        0x01<<6 //50% of FS
00091 #define PS_CAN_ANA_2        0x02<<6 //100% of FS
00092 #define PS_CAN_ANA_3        0x03<<6 //150% of FS
00093 #define PS_PULSES(x)    (( (x) & (0x07) )<<3) //where x = 0..5 and num pulses = 2^x        
00094 //PS_PWIDTH_RATE
00095 #define PS_PWIDTH(x)   (x & 0x03)<<4 //where x = 0..3
00096 #define PS_RATE(x)          (x & 0x07) //where x = 0..7      
00097 //PS_MOV_AVG_HYS
00098 #define PS_AVG_ON           1<<7
00099 #define PS_AVG_OFF          0
00100 #define PS_HYS_LEVEL(x)     x>>1 //where x=0..256
00101 //LS_RES_RATE
00102 #define LS_RES(x)           (x & 0x07)<<4 //where x=0..7
00103 #define LS_RATE(x)          (x & 0x07) //where x=0..7        
00104 
00105 #define LS_RES_20          0x00
00106 #define LS_RES_19          0x01
00107 #define LS_RES_18          0x02
00108 #define LS_RES_17          0x03
00109 #define LS_RES_16         0x04
00110 #define LS_RES_13          0x05
00111 
00112 //LS_GAIN
00113 #define LS_GAIN(x)          (x & 0x03)
00114 #define LS_GAIN_1           0x00
00115 #define LS_GAIN_3           0x01
00116 #define LS_GAIN_6           0x10
00117 #define LS_GAIN_20          0x11
00118 
00119 //LS_THRES_VAR
00120 #define LS_THRES_VAR(x)     (x & 0x07)
00121 //INT_CFG_0
00122 #define LS_INT_SEL_W        0
00123 #define LS_INT_SEL_G        1<<4
00124 #define LS_INT_SEL_R        2<<4
00125 #define LS_INT_SEL_B        3<<4
00126 #define LS_THRES_INT_MODE  0
00127 #define LS_VAR_INT_MODE     1<<1
00128 #define LS_INT_ON           1
00129 #define LS_INT_OFF          0
00130 //INT_CFG_1
00131 #define AFULL_INT_ON        1<<5
00132 #define AFULL_INT_OFF       0
00133 #define PPG_INT_ON          1<<4
00134 #define PPG_INT_OFF          0
00135 #define PS_INT_READ_CLEARS  0<<1
00136 #define PS_INT_LOGIC 1
00137 #define PS_INT_ON           1
00138 #define PS_INT_OFF          0
00139 
00140 //INT_PST
00141 #define LS_PERSIST(x)       (x & 0x0F)<<4
00142 #define PS_PERSIST(x)       (x & 0x0F)
00143 //PPG_PS_GAIN
00144 #define PPG_PS_GAIN_1       0
00145 #define PPG_PS_GAIN_1P5     1<<4
00146 #define PPG_PS_GAIN_2       2<<4
00147 #define PPG_PS_GAIN_4       3<<4
00148 #define PPG_LED_SETTLING(x) (x & 0x03)<<2 // 0=0us, 1 = 5us, 2 = 10us (Default), 3=20us
00149 #define PPG_ALC_TRACK(x)    (x & 0x03) // 0 = 10us, 1 (20us) DEFAULT ,2 = 30us, 3 = 60us
00150 //PPG_PS_CFG
00151 #define PPG_POW_SAVE_ON     1<<6
00152 #define PPG_POW_SAVE_OFF    0
00153 #define LED_FLIP_ON         1<<3
00154 #define LED_FLIP_OFF        0
00155 #define DIFF_OFF            2
00156 #define ALC_OFF             1
00157 #define DIFF_ON             0
00158 #define ALC_ON              0
00159 #define SIGNAL_OUT          1<<2
00160 #define OFFSET_OUT          0
00161 //PPG_CAN_ANA
00162 #define PPG_CH1_CAN(x)      (x & 0x03)<<2
00163 #define PPG_CH2_CAN(x)      (x & 0x03)
00164 //PPG_AVG
00165 #define PPG_AVG(x)          (x & 0x07)<<4
00166 //PPG_PWIDTH_RATE
00167 #define PPG_PWIDTH(x)       (x & 0x07)<<4
00168 #define PPG_FREQ_PREPRODUCTION 0
00169 #define PPG_FREQ_PRODUCTION 1
00170 #define PPG_RATE(x)         (x & 0x07)
00171 //FIFO_CFG
00172 #define FIFO_ROLL_ON        1<<4
00173 #define FIFO_ROLL_OFF       0
00174 #define AFULL_ADVANCE_WARNING(x)   (x & 0x0F)
00175 
00176 
00177 
00178 
00179 
00180 #define POR_TIME_MS 5 //a guess
00181 
00182 
00183 #define IR_TARGET_COUNTS 196608
00184 #define R_TARGET_COUNTS 196608
00185 #define TOL1 6000
00186 #define TOL2 40000
00187 #define STEP 8
00188 #define IN_RANGE_PERSIST 4
00189 #define IR_MAX_CURRENT 0x02AF
00190 #define R_MAX_CURRENT 0x01FF
00191 
00192 
00193 class OB1203
00194 {
00195     I2C *i2c;
00196 
00197 public:
00198     char osc_trim;
00199     char ls_res;
00200     char ls_rate;
00201     char ls_gain;
00202     uint32_t ls_thres_hi;
00203     uint32_t ls_thres_lo;
00204     char ls_sai;
00205     char ls_mode;
00206     char ls_en;
00207     char ls_int_sel;
00208     char ls_var_mode;
00209     char ps_sai_en;
00210     char temp_en;
00211     char ppg_ps_mode;
00212     char ppg_ps_en;
00213     char ps_can_ana;
00214     char afull_int_en;
00215     char ppg_int_en;
00216     char ps_logic_mode;
00217     uint16_t ps_digital_can;
00218     char ps_int_en;
00219     char ls_persist;
00220     char ps_persist;
00221     uint16_t ps_thres_hi;
00222     uint16_t ps_thres_lo;
00223     uint16_t ps_current;
00224     volatile uint16_t ir_current;
00225     volatile uint16_t r_current;
00226     char ppg_ps_gain;
00227     char ppg_pow_save;
00228     char led_flip;
00229     char ch1_can_ana;
00230     char ch2_can_ana;
00231     char ppg_avg;
00232     char ppg_pwidth;
00233     char ppg_freq;
00234     char ppg_rate;
00235     char ppg_LED_settling;
00236     char ppg_ALC_track;
00237     char ps_pulses;
00238     char ps_pwidth;
00239     char ps_rate;
00240     char ps_avg_en;
00241     char ps_hys_level;
00242     char ls_int_en;
00243     char fifo_rollover_en;
00244     char fifo_afull_advance_warning;
00245     char writePointer;
00246     char readPointer;
00247     char fifoOverflow;
00248     char bio_trim;
00249     char led_trim;
00250     char diff;
00251     char alc;
00252     char sig_out;
00253     char led1_trim;
00254     char led2_trim;
00255     
00256     OB1203 (I2C *);
00257 
00258     // Low-level operations
00259     void reset();
00260     uint16_t get_status();
00261     void writeRegister(int, char, char);
00262     void writeBlock(int, char, char *, char);
00263     void readBlock(int, char, char *, int);
00264     uint32_t bytes2uint32(char *, int);
00265     uint32_t twoandhalfBytes2uint32(char *, int); 
00266 
00267     // High-level operations
00268     void setOscTrim();
00269     bool dataIsNew();
00270     bool lsIsNew();
00271     bool psIsNew();
00272     bool tempIsNew();
00273     bool bioIsNew();
00274     void setMainConfig();
00275     void setIntConfig();
00276     void setLSthresh();
00277     void setPSthresh();
00278     void setPScurrent();
00279     void setPPGcurrent();
00280     void setPPG_PSgain_cfg();
00281     void setPPGana_can();
00282     void setDigitalCan();
00283     void setPPGavg_and_rate();
00284     void setFifoConfig();
00285     void setBioTrim();
00286     void setLEDTrim();
00287     char get_ps_data(uint32_t *);
00288     char get_ls_data(uint32_t *);
00289     char get_ps_ls_data(uint32_t *);
00290     void resetFIFO();
00291     void init_ps();
00292     void init_rgb();
00293     void init_ps_rgb();
00294     void init_hr();
00295     void init_spo2();
00296     void getFifoInfo(char *fifo_info);
00297     void getNumFifoSamplesAvailable(char *fifo_info, char *sample_info);
00298     void getFifoSamples(uint8_t, char *);
00299     void parseFifoSamples(char, char *, uint32_t *);
00300     char get_part_ID(char *);
00301     void setDigTrim(void);
00302 
00303     //agc functions
00304     void do_agc(uint32_t,bool);
00305     
00306     //variables
00307     uint16_t rate;
00308     char res;
00309     char gain;
00310     uint32_t data_max;
00311     uint32_t reg_max;
00312     
00313 
00314 //    const uint32_t targetCounts[2];
00315 
00316     bool update;
00317 
00318 };
00319 
00320 
00321 #endif