Dan Allen / OB1203_example_driver

OB1203 basic mbed driver

Dependents:   OB1203_IDT

OB1203.cpp@20:8d69cd11b8fa, 2019-03-08 (annotated)

Committer:
laserdad
Date:
Fri Mar 08 23:58:41 2019 +0000
Revision:
20:8d69cd11b8fa
Parent:
19:a27b98998edf
Child:
21:ae0672135b9e
fixed getFifoNumSamples function

Who changed what in which revision?

UserRevisionLine numberNew contents of line
laserdad 0:2da1f69b38fd 1 #include "OB1203.h"
laserdad 0:2da1f69b38fd 2 #include "mbed.h"
laserdad 0:2da1f69b38fd 3
laserdad 0:2da1f69b38fd 4 extern Serial pc;
laserdad 0:2da1f69b38fd 5
laserdad 19:a27b98998edf 6 // //
laserdad 19:a27b98998edf 7 OB1203::OB1203(I2C *i2c_obj)
laserdad 0:2da1f69b38fd 8 {
laserdad 0:2da1f69b38fd 9 i2c = i2c_obj;
laserdad 0:2da1f69b38fd 10 }
laserdad 0:2da1f69b38fd 11
laserdad 0:2da1f69b38fd 12
laserdad 0:2da1f69b38fd 13 void OB1203::reset()
laserdad 0:2da1f69b38fd 14 {
laserdad 0:2da1f69b38fd 15 /*POR reset*/
laserdad 0:2da1f69b38fd 16 writeRegister(OB1203_ADDR,REG_MAIN_CTRL_0,SW_RESET);
laserdad 0:2da1f69b38fd 17 wait_ms(POR_TIME_MS);
laserdad 0:2da1f69b38fd 18 }
laserdad 0:2da1f69b38fd 19
laserdad 0:2da1f69b38fd 20
laserdad 0:2da1f69b38fd 21 void OB1203::writeRegister(int addr, char reg, char val) {
laserdad 0:2da1f69b38fd 22 /*writes 1 byte to a single register*/
laserdad 0:2da1f69b38fd 23 char writeData[2];
laserdad 0:2da1f69b38fd 24 writeData[0] = reg;
laserdad 0:2da1f69b38fd 25 writeData[1] = val;
laserdad 0:2da1f69b38fd 26 i2c->write(addr,writeData, 2);
laserdad 0:2da1f69b38fd 27 }
laserdad 0:2da1f69b38fd 28
laserdad 0:2da1f69b38fd 29
laserdad 0:2da1f69b38fd 30 void OB1203::writeBlock(int addr, char startReg, char *data, char numBytes) {
laserdad 0:2da1f69b38fd 31 /*writes data from an array beginning at the startReg*/
laserdad 1:99ca9c464503 32 // pc.printf("entering writeBlock with data %02x %02x\r\n",data[0],data[1]);
laserdad 0:2da1f69b38fd 33 char writeData[numBytes+1];
laserdad 0:2da1f69b38fd 34 writeData[0]=startReg;
laserdad 0:2da1f69b38fd 35 for(int n=1;n<numBytes+1;n++) {
laserdad 0:2da1f69b38fd 36 writeData[n]=data[n-1];
laserdad 0:2da1f69b38fd 37 }
laserdad 0:2da1f69b38fd 38 i2c->write(addr,writeData,numBytes+1);
laserdad 0:2da1f69b38fd 39 }
laserdad 0:2da1f69b38fd 40
laserdad 0:2da1f69b38fd 41
laserdad 0:2da1f69b38fd 42 void OB1203::readBlock(int addr, char startReg, char *data, int numBytes)
laserdad 0:2da1f69b38fd 43 {
laserdad 0:2da1f69b38fd 44 char writeData[1];
laserdad 0:2da1f69b38fd 45 writeData[0] = startReg;
laserdad 0:2da1f69b38fd 46 i2c->write(addr,writeData,1,true);
laserdad 0:2da1f69b38fd 47 i2c->read(addr,data,numBytes);
laserdad 4:f25ca600a0e6 48 // wait_us(800);
laserdad 4:f25ca600a0e6 49 // for(int n=0;n<numBytes;n++)
laserdad 4:f25ca600a0e6 50 // {
laserdad 4:f25ca600a0e6 51 // i2c->read(addr,data+n,1,1);
laserdad 4:f25ca600a0e6 52 // wait_us(20);
laserdad 4:f25ca600a0e6 53 // }
laserdad 0:2da1f69b38fd 54 }
laserdad 0:2da1f69b38fd 55
laserdad 2:3cba0fe6db60 56 uint16_t OB1203::get_status()
laserdad 0:2da1f69b38fd 57 {
laserdad 0:2da1f69b38fd 58 char writeData[1]; //declare array of size 1
laserdad 0:2da1f69b38fd 59 writeData[0] = REG_STATUS_0;
laserdad 2:3cba0fe6db60 60 char data[2]; //declare array of size 1
laserdad 0:2da1f69b38fd 61 i2c->write(OB1203_ADDR,writeData,1,true);
laserdad 0:2da1f69b38fd 62 i2c->read(OB1203_ADDR,data,2);
laserdad 0:2da1f69b38fd 63 return (data[0]<<8 | data[1]);
laserdad 0:2da1f69b38fd 64 }
laserdad 0:2da1f69b38fd 65
laserdad 1:99ca9c464503 66 bool OB1203::dataIsNew()
laserdad 1:99ca9c464503 67 {
laserdad 1:99ca9c464503 68 int status_reg_vals;
laserdad 1:99ca9c464503 69 status_reg_vals = get_status();
laserdad 5:527556d05aa8 70 return ((status_reg_vals & 0x0100)>>8) || (status_reg_vals & 0x0091);
laserdad 5:527556d05aa8 71 }
laserdad 5:527556d05aa8 72
laserdad 5:527556d05aa8 73 bool OB1203::lsIsNew()
laserdad 5:527556d05aa8 74 {
laserdad 5:527556d05aa8 75 int status_reg_vals;
laserdad 5:527556d05aa8 76 status_reg_vals = get_status();
laserdad 5:527556d05aa8 77 return ((status_reg_vals & 0x0100)>>8);
laserdad 5:527556d05aa8 78 }
laserdad 5:527556d05aa8 79
laserdad 5:527556d05aa8 80 bool OB1203::psIsNew()
laserdad 5:527556d05aa8 81 {
laserdad 5:527556d05aa8 82 int status_reg_vals;
laserdad 5:527556d05aa8 83 status_reg_vals = get_status();
laserdad 5:527556d05aa8 84 return (status_reg_vals & 0x0001);
laserdad 5:527556d05aa8 85 }
laserdad 5:527556d05aa8 86
laserdad 5:527556d05aa8 87 bool OB1203::tempIsNew()
laserdad 5:527556d05aa8 88 {
laserdad 5:527556d05aa8 89 int status_reg_vals;
laserdad 5:527556d05aa8 90 status_reg_vals = get_status();
laserdad 5:527556d05aa8 91 return (status_reg_vals & 0x0080);
laserdad 5:527556d05aa8 92 }
laserdad 5:527556d05aa8 93
laserdad 5:527556d05aa8 94 bool OB1203::bioIsNew()
laserdad 5:527556d05aa8 95 {
laserdad 5:527556d05aa8 96 int status_reg_vals;
laserdad 5:527556d05aa8 97 status_reg_vals = get_status();
laserdad 5:527556d05aa8 98 return (status_reg_vals & 0x0010);
laserdad 1:99ca9c464503 99 }
laserdad 0:2da1f69b38fd 100
laserdad 8:6c19c052b053 101 void OB1203::setOscTrim()
laserdad 8:6c19c052b053 102 {
laserdad 8:6c19c052b053 103 char writeData[1];
laserdad 8:6c19c052b053 104 writeData[0] = osc_trim;
laserdad 8:6c19c052b053 105 // pc.printf("writing %02x to REG %02x\r\n",osc_trim,REG_OSC_TRIM);
laserdad 8:6c19c052b053 106 writeBlock(OB1203_ADDR,REG_OSC_TRIM,writeData,1);
laserdad 8:6c19c052b053 107 }
laserdad 8:6c19c052b053 108
laserdad 0:2da1f69b38fd 109 void OB1203::setMainConfig()
laserdad 0:2da1f69b38fd 110 {
laserdad 0:2da1f69b38fd 111 char writeData[2];
laserdad 0:2da1f69b38fd 112 writeData[0] = ls_sai | ls_mode | ls_en; //MAIN_CTRL_0
laserdad 4:f25ca600a0e6 113 writeData[1] = temp_en | ps_sai_en | ppg_ps_mode | ppg_ps_en; //MAIN_CTRL_1
laserdad 5:527556d05aa8 114 // pc.printf("main config 1 to write %02x\r\n",writeData[1]);
laserdad 0:2da1f69b38fd 115 writeBlock(OB1203_ADDR,REG_MAIN_CTRL_0,writeData,2);
laserdad 0:2da1f69b38fd 116 }
laserdad 0:2da1f69b38fd 117
laserdad 0:2da1f69b38fd 118
laserdad 0:2da1f69b38fd 119 void OB1203::setIntConfig()
laserdad 0:2da1f69b38fd 120 {
laserdad 0:2da1f69b38fd 121 char writeData[3];
laserdad 0:2da1f69b38fd 122 writeData[0] = ls_int_sel | ls_var_mode | ls_int_en;
laserdad 0:2da1f69b38fd 123 writeData[1] = afull_int_en | ppg_int_en | ps_logic_mode | ps_int_en;
laserdad 0:2da1f69b38fd 124 writeData[2] = ls_persist | ps_persist;
laserdad 0:2da1f69b38fd 125 writeBlock(OB1203_ADDR,REG_INT_CFG_0,writeData,3); //default
laserdad 0:2da1f69b38fd 126 }
laserdad 0:2da1f69b38fd 127
laserdad 0:2da1f69b38fd 128
laserdad 0:2da1f69b38fd 129 void OB1203::setLSthresh()
laserdad 0:2da1f69b38fd 130 {
laserdad 0:2da1f69b38fd 131 char writeData[6];
laserdad 0:2da1f69b38fd 132 writeData[0] = (char) (ls_thres_hi & 0x000000FF);
laserdad 0:2da1f69b38fd 133 writeData[1] = (char) ((ls_thres_hi & 0x0000FF00)>>8);
laserdad 1:99ca9c464503 134 writeData[2] = (char) ((ls_thres_hi & 0x00FF0000)>>16);
laserdad 0:2da1f69b38fd 135 writeData[3] = (char) (ls_thres_lo & 0x000000FF);
laserdad 0:2da1f69b38fd 136 writeData[4] = (char) ((ls_thres_lo & 0x0000FF00)>>8);
laserdad 1:99ca9c464503 137 writeData[5] = (char) ((ls_thres_lo & 0x00FF0000)>>16);
laserdad 0:2da1f69b38fd 138 writeBlock(OB1203_ADDR,REG_LS_THRES_HI,writeData,6); //default
laserdad 0:2da1f69b38fd 139 }
laserdad 0:2da1f69b38fd 140
laserdad 0:2da1f69b38fd 141
laserdad 0:2da1f69b38fd 142 void OB1203::setPSthresh()
laserdad 0:2da1f69b38fd 143 {
laserdad 0:2da1f69b38fd 144 char writeData[4];
laserdad 0:2da1f69b38fd 145 writeData[0] = (char) (ps_thres_hi & 0x000FF);
laserdad 0:2da1f69b38fd 146 writeData[1] = (char) ((ps_thres_hi & 0xFF00)>>8);
laserdad 16:d5fe5debb5d2 147 writeData[2] = (char) (ps_thres_lo & 0x000FF);
laserdad 16:d5fe5debb5d2 148 writeData[3] = (char) ((ps_thres_lo & 0xFF00)>>8);
laserdad 0:2da1f69b38fd 149 writeBlock(OB1203_ADDR,REG_PS_THRES_HI,writeData,4); //default
laserdad 0:2da1f69b38fd 150 }
laserdad 0:2da1f69b38fd 151
laserdad 0:2da1f69b38fd 152
laserdad 0:2da1f69b38fd 153 void OB1203::setPScurrent()
laserdad 0:2da1f69b38fd 154 {
laserdad 0:2da1f69b38fd 155 char writeData[2];
laserdad 0:2da1f69b38fd 156 writeData[0] = (char) (ps_current & 0x00FF);
laserdad 0:2da1f69b38fd 157 writeData[1] = (char) ((ps_current & 0xFF00)>>8);
laserdad 0:2da1f69b38fd 158 writeBlock(OB1203_ADDR,REG_PS_LED_CURR,writeData,2);
laserdad 0:2da1f69b38fd 159 }
laserdad 0:2da1f69b38fd 160
laserdad 0:2da1f69b38fd 161
laserdad 0:2da1f69b38fd 162 void OB1203::setPPGcurrent()
laserdad 0:2da1f69b38fd 163 {
laserdad 0:2da1f69b38fd 164 char writeData[4];
laserdad 0:2da1f69b38fd 165 writeData[0] = (char) (ir_current & 0x00FF);
laserdad 0:2da1f69b38fd 166 writeData[1] = (char) ((ir_current & 0xFF00)>>8);
laserdad 0:2da1f69b38fd 167 writeData[2] = (char) (r_current & 0x00FF);
laserdad 0:2da1f69b38fd 168 writeData[3] = (char) ((r_current & 0xFF00)>>8);
laserdad 0:2da1f69b38fd 169 writeBlock(OB1203_ADDR,REG_PPG_IRLED_CURR,writeData,4);
laserdad 0:2da1f69b38fd 170 }
laserdad 0:2da1f69b38fd 171
laserdad 0:2da1f69b38fd 172
laserdad 0:2da1f69b38fd 173 void OB1203::setPPG_PSgain_cfg()
laserdad 0:2da1f69b38fd 174 {
laserdad 0:2da1f69b38fd 175 char writeData[2];
laserdad 8:6c19c052b053 176 writeData[0] = ppg_ps_gain | ppg_LED_settling | ppg_ALC_track;
laserdad 10:6703d2cdeabc 177 writeData[1] = ppg_pow_save | led_flip | sig_out | diff | alc;
laserdad 0:2da1f69b38fd 178 writeBlock(OB1203_ADDR,REG_PPG_PS_GAIN,writeData,2);
laserdad 0:2da1f69b38fd 179 }
laserdad 0:2da1f69b38fd 180
laserdad 0:2da1f69b38fd 181 void OB1203::setPPGana_can()
laserdad 0:2da1f69b38fd 182 {
laserdad 0:2da1f69b38fd 183 char writeData[1];
laserdad 0:2da1f69b38fd 184 writeData[0] = ch1_can_ana | ch2_can_ana;
laserdad 0:2da1f69b38fd 185 writeBlock(OB1203_ADDR,REG_PPG_CAN_ANA,writeData,1);
laserdad 0:2da1f69b38fd 186 }
laserdad 0:2da1f69b38fd 187
laserdad 0:2da1f69b38fd 188 void OB1203::setPPGavg_and_rate()
laserdad 0:2da1f69b38fd 189 {
laserdad 0:2da1f69b38fd 190 char writeData[2];
laserdad 9:0c3d2eea1c79 191 writeData[0] = ppg_avg | 0x0A; //use standard LED max settings
laserdad 0:2da1f69b38fd 192 writeData[1] = ppg_pwidth | ppg_freq | ppg_rate;
laserdad 0:2da1f69b38fd 193 writeBlock(OB1203_ADDR,REG_PPG_AVG,writeData,2);
laserdad 0:2da1f69b38fd 194 }
laserdad 0:2da1f69b38fd 195
laserdad 9:0c3d2eea1c79 196 void OB1203::setBioTrim()
laserdad 9:0c3d2eea1c79 197 {
laserdad 9:0c3d2eea1c79 198 char writeData[1];
laserdad 9:0c3d2eea1c79 199 writeData[0] = bio_trim;
laserdad 9:0c3d2eea1c79 200 writeBlock(OB1203_ADDR, REG_BIO_TRIM,writeData,1);
laserdad 9:0c3d2eea1c79 201 }
laserdad 9:0c3d2eea1c79 202
laserdad 9:0c3d2eea1c79 203 void OB1203::setLEDTrim()
laserdad 9:0c3d2eea1c79 204 {
laserdad 9:0c3d2eea1c79 205 char writeData[1];
laserdad 9:0c3d2eea1c79 206 writeData[0] = led_trim;
laserdad 9:0c3d2eea1c79 207 writeBlock(OB1203_ADDR, REG_LED_TRIM,writeData,1);
laserdad 9:0c3d2eea1c79 208 }
laserdad 0:2da1f69b38fd 209
laserdad 0:2da1f69b38fd 210 void OB1203::setDigitalCan()
laserdad 0:2da1f69b38fd 211 {
laserdad 0:2da1f69b38fd 212 char writeData[2];
laserdad 0:2da1f69b38fd 213 writeData[0] = (char)(ps_digital_can & 0x00FF);
laserdad 0:2da1f69b38fd 214 writeData[1] = (char)((ps_digital_can & 0xFF00)>>8);
laserdad 0:2da1f69b38fd 215 writeBlock(OB1203_ADDR,REG_PS_CAN_DIG,writeData,2);
laserdad 0:2da1f69b38fd 216 }
laserdad 0:2da1f69b38fd 217
laserdad 0:2da1f69b38fd 218
laserdad 0:2da1f69b38fd 219 void OB1203::setFifoConfig()
laserdad 0:2da1f69b38fd 220 {
laserdad 0:2da1f69b38fd 221 char writeData[1];
laserdad 12:573f7ce91a0d 222 writeData[0] = fifo_rollover_en | fifo_afull_advance_warning;
laserdad 0:2da1f69b38fd 223 writeBlock(OB1203_ADDR,REG_FIFO_CFG,writeData,1);
laserdad 0:2da1f69b38fd 224 }
laserdad 0:2da1f69b38fd 225
laserdad 0:2da1f69b38fd 226
laserdad 12:573f7ce91a0d 227 void OB1203::resetFIFO()
laserdad 12:573f7ce91a0d 228 {
laserdad 12:573f7ce91a0d 229 char writeData[2];
laserdad 12:573f7ce91a0d 230 writeData[0]=0;
laserdad 12:573f7ce91a0d 231 writeData[1]=0;
laserdad 20:8d69cd11b8fa 232 writeRegister(OB1203_ADDR,REG_MAIN_CTRL_1, (temp_en | ps_sai_en | ppg_ps_mode | 0) ); //turn PPG off MAIN_CTRL_1;
laserdad 12:573f7ce91a0d 233 writeBlock(OB1203_ADDR,REG_FIFO_WR_PTR,writeData,2);//set write and read pointer to zero--next sample is newest
laserdad 12:573f7ce91a0d 234 writeRegister(OB1203_ADDR,REG_MAIN_CTRL_1, (temp_en | ps_sai_en | ppg_ps_mode | ppg_ps_en) ); //MAIN_CTRL_1;
laserdad 12:573f7ce91a0d 235 }
laserdad 12:573f7ce91a0d 236
laserdad 12:573f7ce91a0d 237
laserdad 0:2da1f69b38fd 238 void OB1203::init_rgb()
laserdad 0:2da1f69b38fd 239 {
laserdad 0:2da1f69b38fd 240 /*Configures ALS/RGB mode. PS and BIO off.
laserdad 0:2da1f69b38fd 241 Use: set class variables using header declarations. Then call this function.*/
laserdad 0:2da1f69b38fd 242 char writeData[2];
laserdad 0:2da1f69b38fd 243 writeBlock(OB1203_ADDR,REG_LS_RES_RATE,writeData,2);
laserdad 0:2da1f69b38fd 244 writeData[0] = ls_res | ls_rate; //LS_RES_RATE
laserdad 0:2da1f69b38fd 245 writeData[1] = ls_gain; //LS_GAIN
laserdad 0:2da1f69b38fd 246 writeBlock(OB1203_ADDR,REG_LS_RES_RATE,writeData,2);
laserdad 0:2da1f69b38fd 247 setLSthresh();
laserdad 0:2da1f69b38fd 248 setIntConfig();
laserdad 0:2da1f69b38fd 249 ppg_ps_en = PPG_PS_OFF;
laserdad 0:2da1f69b38fd 250 ls_en = LS_ON;
laserdad 0:2da1f69b38fd 251 setMainConfig();
laserdad 0:2da1f69b38fd 252 }
laserdad 0:2da1f69b38fd 253
laserdad 0:2da1f69b38fd 254
laserdad 0:2da1f69b38fd 255 void OB1203::init_ps()
laserdad 0:2da1f69b38fd 256 {
laserdad 20:8d69cd11b8fa 257 reset();
laserdad 0:2da1f69b38fd 258 /*Configures PS mode but not thresholds or interrupts. RGB/ALS and BIO off.
laserdad 0:2da1f69b38fd 259 Use: set class variables using header declarations. Then call this function.*/
laserdad 0:2da1f69b38fd 260 char writeData[2];
laserdad 0:2da1f69b38fd 261 //PS settings
laserdad 0:2da1f69b38fd 262 setPScurrent();
laserdad 11:724cf1c68651 263 writeData[0] = ps_can_ana | ps_pulses | 0x02; //PS_CAN_PULSES -->set hidden max current registers to allow higher LED powers
laserdad 0:2da1f69b38fd 264 writeData[1] = ps_pwidth | ps_rate; //PS_PWIDTH_RATE
laserdad 0:2da1f69b38fd 265 writeBlock(OB1203_ADDR,REG_PS_CAN_PULSES,writeData,2);
laserdad 0:2da1f69b38fd 266 //Digital crosstalk cancellation
laserdad 0:2da1f69b38fd 267 setDigitalCan(); //PS_CAN_DIG
laserdad 0:2da1f69b38fd 268 //set PS moving average and hysteresis
laserdad 0:2da1f69b38fd 269 writeData[0] = ps_avg_en | ps_hys_level; //PS_MOV_AVG_HYS
laserdad 0:2da1f69b38fd 270 writeBlock(OB1203_ADDR,REG_PS_MOV_AVG_HYS,writeData,1);
laserdad 0:2da1f69b38fd 271 //set PS interrupt thresholds
laserdad 0:2da1f69b38fd 272 setPSthresh();
laserdad 0:2da1f69b38fd 273 //interrupt configuration
laserdad 0:2da1f69b38fd 274 ls_int_en = LS_INT_OFF;
laserdad 0:2da1f69b38fd 275 setPPG_PSgain_cfg();
laserdad 0:2da1f69b38fd 276 setPScurrent();
laserdad 0:2da1f69b38fd 277 //config PS
laserdad 0:2da1f69b38fd 278 ls_en = LS_OFF;
laserdad 0:2da1f69b38fd 279 ppg_ps_en = 1;
laserdad 20:8d69cd11b8fa 280 // ps_int_en = PS_INT_ON;
laserdad 0:2da1f69b38fd 281 ppg_ps_mode = PS_MODE;
laserdad 20:8d69cd11b8fa 282 setIntConfig();
laserdad 20:8d69cd11b8fa 283 // setLEDTrim();
laserdad 0:2da1f69b38fd 284 setMainConfig();
laserdad 0:2da1f69b38fd 285 }
laserdad 0:2da1f69b38fd 286
laserdad 0:2da1f69b38fd 287
laserdad 0:2da1f69b38fd 288 void OB1203::init_ps_rgb()
laserdad 0:2da1f69b38fd 289 {
laserdad 2:3cba0fe6db60 290 reset();
laserdad 0:2da1f69b38fd 291 char writeData[2];
laserdad 0:2da1f69b38fd 292 writeData[0] = ls_res | ls_rate; //LS_RES_RATE
laserdad 0:2da1f69b38fd 293 writeData[1] = ls_gain; //LS_GAIN
laserdad 0:2da1f69b38fd 294 writeBlock(OB1203_ADDR,REG_LS_RES_RATE,writeData,2);
laserdad 11:724cf1c68651 295 writeData[0] = ps_can_ana | ps_pulses | 0x02; //PS_CAN_PULSES -->set hidden max current registers to allow higher LED powers
laserdad 0:2da1f69b38fd 296 writeData[1] = ps_pwidth | ps_rate; //PS_PWIDTH_RATE
laserdad 0:2da1f69b38fd 297 writeBlock(OB1203_ADDR,REG_PS_CAN_PULSES,writeData,2);
laserdad 0:2da1f69b38fd 298 setDigitalCan(); //PS_CAN_DIG
laserdad 0:2da1f69b38fd 299 //set PS moving average and hysteresis
laserdad 0:2da1f69b38fd 300 writeData[0] = ps_avg_en | ps_hys_level; //PS_MOV_AVG_HYS
laserdad 0:2da1f69b38fd 301 writeBlock(OB1203_ADDR,REG_PS_MOV_AVG_HYS,writeData,1);
laserdad 0:2da1f69b38fd 302 setIntConfig();
laserdad 0:2da1f69b38fd 303 setPSthresh();
laserdad 16:d5fe5debb5d2 304 setPScurrent();
laserdad 0:2da1f69b38fd 305 setLSthresh();
laserdad 0:2da1f69b38fd 306 ls_en = LS_ON;
laserdad 0:2da1f69b38fd 307 ppg_ps_en = PPG_PS_ON;
laserdad 0:2da1f69b38fd 308 ppg_ps_mode = PS_MODE;
laserdad 9:0c3d2eea1c79 309 setLEDTrim();
laserdad 16:d5fe5debb5d2 310 setMainConfig();
laserdad 0:2da1f69b38fd 311 }
laserdad 0:2da1f69b38fd 312
laserdad 0:2da1f69b38fd 313
laserdad 0:2da1f69b38fd 314 void OB1203::init_hr()
laserdad 0:2da1f69b38fd 315 {
laserdad 2:3cba0fe6db60 316 reset();
laserdad 3:ffcd0d2ec97f 317 ps_int_en = PS_INT_OFF;
laserdad 9:0c3d2eea1c79 318 ls_en = LS_OFF;
laserdad 0:2da1f69b38fd 319 setIntConfig();
laserdad 3:ffcd0d2ec97f 320 char readData[1];
laserdad 16:d5fe5debb5d2 321 //readBlock(OB1203_ADDR,REG_PS_INT_CFG_1,readData,1);
laserdad 8:6c19c052b053 322 // pc.printf("int config 1 = %02X\r\n",readData[0]);
laserdad 0:2da1f69b38fd 323 setPPG_PSgain_cfg();
laserdad 0:2da1f69b38fd 324 setPPGcurrent();
laserdad 0:2da1f69b38fd 325 setPPGana_can();
laserdad 0:2da1f69b38fd 326 setPPGavg_and_rate();
laserdad 0:2da1f69b38fd 327 setFifoConfig();
laserdad 3:ffcd0d2ec97f 328 ppg_ps_mode = HR_MODE;
laserdad 9:0c3d2eea1c79 329 setBioTrim();
laserdad 9:0c3d2eea1c79 330 setLEDTrim();
laserdad 3:ffcd0d2ec97f 331 setMainConfig();
laserdad 0:2da1f69b38fd 332 }
laserdad 0:2da1f69b38fd 333
laserdad 0:2da1f69b38fd 334 void OB1203::init_spo2()
laserdad 0:2da1f69b38fd 335 {
laserdad 2:3cba0fe6db60 336 reset();
laserdad 2:3cba0fe6db60 337 ps_int_en = PS_INT_OFF;
laserdad 9:0c3d2eea1c79 338 ls_en = LS_OFF;
laserdad 0:2da1f69b38fd 339 setIntConfig();
laserdad 2:3cba0fe6db60 340 char readData[1];
laserdad 2:3cba0fe6db60 341 readBlock(OB1203_ADDR,REG_PS_INT_CFG_1,readData,1);
laserdad 8:6c19c052b053 342 // pc.printf("int config 1 = %02X\r\n",readData[0]);
laserdad 0:2da1f69b38fd 343 setPPG_PSgain_cfg();
laserdad 0:2da1f69b38fd 344 setPPGcurrent();
laserdad 0:2da1f69b38fd 345 setPPGana_can();
laserdad 0:2da1f69b38fd 346 setPPGavg_and_rate();
laserdad 0:2da1f69b38fd 347 setFifoConfig();
laserdad 0:2da1f69b38fd 348 ppg_ps_mode = SPO2_MODE;
laserdad 9:0c3d2eea1c79 349 setLEDTrim();
laserdad 9:0c3d2eea1c79 350 setBioTrim();
laserdad 0:2da1f69b38fd 351 setMainConfig();
laserdad 0:2da1f69b38fd 352 }
laserdad 0:2da1f69b38fd 353
laserdad 0:2da1f69b38fd 354 uint32_t OB1203::bytes2uint32(char *data, int start_byte)
laserdad 0:2da1f69b38fd 355 {
laserdad 1:99ca9c464503 356 //coverts a string of 3 bytes with LSB first into unsigned long MSB last
laserdad 16:d5fe5debb5d2 357 return ((uint32_t)data[start_byte+2])<<16 | ((uint32_t)data[start_byte+1])<<8 | ((uint32_t)data[start_byte]) ;
laserdad 0:2da1f69b38fd 358 }
laserdad 0:2da1f69b38fd 359
laserdad 6:337ee64ca7ab 360 uint32_t OB1203::twoandhalfBytes2uint32(char *data, int start_byte)
laserdad 6:337ee64ca7ab 361 {
laserdad 6:337ee64ca7ab 362 //coverts a string of 3 bytes with LSB first into unsigned long MSB last
laserdad 7:7d90f25c04fa 363 return (uint32_t)( ((data[start_byte+2] & 0x0F)<<16) | (uint32_t(data[start_byte+1])<<8) | uint32_t(data[start_byte]) ) ;
laserdad 6:337ee64ca7ab 364 }
laserdad 0:2da1f69b38fd 365
laserdad 0:2da1f69b38fd 366 char OB1203::get_ls_data(uint32_t *data)
laserdad 0:2da1f69b38fd 367 {
laserdad 5:527556d05aa8 368 char byte_data[21];
laserdad 6:337ee64ca7ab 369 readBlock(OB1203_ADDR,REG_STATUS_0,byte_data,21);
laserdad 0:2da1f69b38fd 370 #ifdef DEBUG
laserdad 5:527556d05aa8 371 pc.printf("%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x $02x\r\n",
laserdad 0:2da1f69b38fd 372 byte_data[0],byte_data[1],byte_data[2],byte_data[3],
laserdad 0:2da1f69b38fd 373 byte_data[4],byte_data[5],byte_data[6],byte_data[7],
laserdad 0:2da1f69b38fd 374 byte_data[8],byte_data[9],byte_data[10],byte_data[11],
laserdad 0:2da1f69b38fd 375 byte_data[12],byte_data[13],byte_data[14],byte_data[15],
laserdad 5:527556d05aa8 376 byte_data[16],byte_data[17],byte_data[18]),
laserdad 5:527556d05aa8 377 byte_data[19],byte_data[20];
laserdad 0:2da1f69b38fd 378 #endif
laserdad 0:2da1f69b38fd 379
laserdad 1:99ca9c464503 380
laserdad 1:99ca9c464503 381 //byte_data[0] is ps (not populated)
laserdad 6:337ee64ca7ab 382 data[1] = twoandhalfBytes2uint32(byte_data,4); //w
laserdad 6:337ee64ca7ab 383 data[2] = twoandhalfBytes2uint32(byte_data,7); //g
laserdad 6:337ee64ca7ab 384 data[3] = twoandhalfBytes2uint32(byte_data,10); //b
laserdad 6:337ee64ca7ab 385 data[4] = twoandhalfBytes2uint32(byte_data,13); //r
laserdad 6:337ee64ca7ab 386 data[5] = twoandhalfBytes2uint32(byte_data,16); //c
laserdad 6:337ee64ca7ab 387 data[6] = (uint32_t)((byte_data[20] & 0x0F)<<8) | (uint32_t)byte_data[19] ; //temp data
laserdad 0:2da1f69b38fd 388 return ( (byte_data[0] & LS_NEW_DATA) == 0x01 ? 1 : 0); //return 1 if new data or 0 if old data
laserdad 0:2da1f69b38fd 389 }
laserdad 0:2da1f69b38fd 390
laserdad 0:2da1f69b38fd 391 char OB1203::get_ps_data(uint32_t *data)
laserdad 0:2da1f69b38fd 392 {
laserdad 0:2da1f69b38fd 393 char byte_data[4];
laserdad 6:337ee64ca7ab 394 readBlock(OB1203_ADDR,REG_STATUS_0,byte_data,4);
laserdad 0:2da1f69b38fd 395 #ifdef DEBUG
laserdad 0:2da1f69b38fd 396 pc.printf( "%02x %02x %02x %02x\r\n", byte_data[0], byte_data[1], byte_data[2], byte_data[3] );
laserdad 0:2da1f69b38fd 397 #endif
laserdad 1:99ca9c464503 398
laserdad 1:99ca9c464503 399 data[0] = ((uint32_t)byte_data[3])<<8 | ((uint32_t)byte_data[2]); //ps data
laserdad 0:2da1f69b38fd 400 return ( (byte_data[1] & PS_NEW_DATA) == 0x01 ? 1 : 0); //return 1 if new data or 0 if old data
laserdad 0:2da1f69b38fd 401 }
laserdad 0:2da1f69b38fd 402
laserdad 0:2da1f69b38fd 403 char OB1203::get_ps_ls_data(uint32_t *data)
laserdad 0:2da1f69b38fd 404 {
laserdad 4:f25ca600a0e6 405 char byte_data[21];
laserdad 4:f25ca600a0e6 406 readBlock(OB1203_ADDR,REG_STATUS_0,byte_data,21);
laserdad 0:2da1f69b38fd 407 #ifdef DEBUG
laserdad 4:f25ca600a0e6 408 pc.printf("%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x $02x\r\n",
laserdad 0:2da1f69b38fd 409 byte_data[0],byte_data[1],byte_data[2],byte_data[3],byte_data[4],
laserdad 0:2da1f69b38fd 410 byte_data[5],byte_data[6],byte_data[7],byte_data[8],byte_data[9],
laserdad 0:2da1f69b38fd 411 byte_data[10],byte_data[11],byte_data[12],byte_data[13],byte_data[14],
laserdad 4:f25ca600a0e6 412 byte_data[15],byte_data[16],byte_data[17],byte_data[18] ),
laserdad 4:f25ca600a0e6 413 byte_data[19],byte_data[20];
laserdad 0:2da1f69b38fd 414 #endif
laserdad 0:2da1f69b38fd 415
laserdad 1:99ca9c464503 416 data[0] = ((uint32_t)byte_data[3])<<8 | ((uint32_t)byte_data[2]); //ps
laserdad 6:337ee64ca7ab 417 data[1] = twoandhalfBytes2uint32(byte_data,4); //w
laserdad 6:337ee64ca7ab 418 data[2] = twoandhalfBytes2uint32(byte_data,7); //g
laserdad 6:337ee64ca7ab 419 data[3] = twoandhalfBytes2uint32(byte_data,10); //b
laserdad 6:337ee64ca7ab 420 data[4] = twoandhalfBytes2uint32(byte_data,13); //r
laserdad 6:337ee64ca7ab 421 data[5] = twoandhalfBytes2uint32(byte_data,16); //c
laserdad 6:337ee64ca7ab 422 data[6] = (uint32_t)((byte_data[20] & 0x0F)<<8) | (uint32_t)byte_data[19] ; //temp data
laserdad 0:2da1f69b38fd 423 return ( (byte_data[0] & LS_NEW_DATA) == 0x01 ? 1 : 0); //return 1 if new data or 0 if old data
laserdad 0:2da1f69b38fd 424 }
laserdad 0:2da1f69b38fd 425
laserdad 0:2da1f69b38fd 426
laserdad 0:2da1f69b38fd 427 void OB1203::getFifoInfo(char *fifo_info)
laserdad 0:2da1f69b38fd 428 {
laserdad 0:2da1f69b38fd 429 readBlock(OB1203_ADDR,REG_FIFO_WR_PTR,fifo_info,3);
laserdad 0:2da1f69b38fd 430 writePointer = fifo_info[0];
laserdad 0:2da1f69b38fd 431 readPointer = fifo_info[1];
laserdad 0:2da1f69b38fd 432 fifoOverflow = fifo_info[2];
laserdad 0:2da1f69b38fd 433 }
laserdad 0:2da1f69b38fd 434
laserdad 0:2da1f69b38fd 435
laserdad 20:8d69cd11b8fa 436 void OB1203::getNumFifoSamplesAvailable(char *fifo_info, char *sample_info)
laserdad 0:2da1f69b38fd 437 {
laserdad 20:8d69cd11b8fa 438 /*sample_info [3] = {numSamplesHR, numSamplesSpO2, overflow*/
laserdad 20:8d69cd11b8fa 439
laserdad 20:8d69cd11b8fa 440 getFifoInfo(fifo_info);
laserdad 20:8d69cd11b8fa 441 uint8_t writePointer = fifo_info[0];
laserdad 20:8d69cd11b8fa 442 uint8_t readPointer = fifo_info [1];
laserdad 0:2da1f69b38fd 443 uint8_t numSamples = writePointer;
laserdad 0:2da1f69b38fd 444 if (writePointer<readPointer)
laserdad 0:2da1f69b38fd 445 {
laserdad 20:8d69cd11b8fa 446 numSamples += 32;
laserdad 0:2da1f69b38fd 447 }
laserdad 20:8d69cd11b8fa 448 numSamples -= readPointer;
laserdad 20:8d69cd11b8fa 449 sample_info[0] = numSamples; //num HR samples
laserdad 20:8d69cd11b8fa 450 sample_info[1] = (numSamples>>1); //num SpO2 samples
laserdad 20:8d69cd11b8fa 451 sample_info[2] = fifo_info[2];
laserdad 0:2da1f69b38fd 452 }
laserdad 0:2da1f69b38fd 453
laserdad 0:2da1f69b38fd 454
laserdad 0:2da1f69b38fd 455 void OB1203::getFifoSamples(uint8_t numSamples, char *fifoData)
laserdad 0:2da1f69b38fd 456 {
laserdad 2:3cba0fe6db60 457 readBlock(OB1203_ADDR,REG_FIFO_DATA,fifoData,3*numSamples);
laserdad 0:2da1f69b38fd 458 }
laserdad 0:2da1f69b38fd 459
laserdad 0:2da1f69b38fd 460
laserdad 0:2da1f69b38fd 461 void OB1203::parseFifoSamples(char numSamples, char *fifoData, uint32_t *assembledData)
laserdad 0:2da1f69b38fd 462 {
laserdad 0:2da1f69b38fd 463 for (int n=0; n<numSamples; n++)
laserdad 0:2da1f69b38fd 464 {
laserdad 0:2da1f69b38fd 465 assembledData[n] = bytes2uint32(fifoData,3*n);
laserdad 0:2da1f69b38fd 466 }
laserdad 0:2da1f69b38fd 467 }
laserdad 0:2da1f69b38fd 468
laserdad 0:2da1f69b38fd 469
laserdad 0:2da1f69b38fd 470 char OB1203::get_part_ID(char *data)
laserdad 0:2da1f69b38fd 471 {
laserdad 0:2da1f69b38fd 472 readBlock(OB1203_ADDR,REG_PART_ID,data,1);
laserdad 0:2da1f69b38fd 473 return data[0];
laserdad 19:a27b98998edf 474 }
laserdad 19:a27b98998edf 475
laserdad 19:a27b98998edf 476
laserdad 19:a27b98998edf 477 void OB1203::do_agc(uint32_t data, bool ch)
laserdad 19:a27b98998edf 478 {
laserdad 19:a27b98998edf 479 const uint32_t tol1 = TOL1;
laserdad 19:a27b98998edf 480 const uint32_t tol2 = TOL2;
laserdad 19:a27b98998edf 481 const uint16_t in_range_persist = IN_RANGE_PERSIST;
laserdad 19:a27b98998edf 482 static uint16_t in_range[2] = {0,0};
laserdad 19:a27b98998edf 483 const uint16_t maxCurrent[2] = {IR_MAX_CURRENT , R_MAX_CURRENT};
laserdad 19:a27b98998edf 484 const uint16_t step = STEP;
laserdad 19:a27b98998edf 485 const uint32_t targetCounts[2] = {IR_TARGET_COUNTS, R_TARGET_COUNTS};
laserdad 19:a27b98998edf 486 //ch = 0 for IR, 1 for R (channel)
laserdad 20:8d69cd11b8fa 487
laserdad 20:8d69cd11b8fa 488 if( data > targetCounts[ch] + ( (in_range[ch]>in_range_persist) ? tol2: tol1) ) //too high
laserdad 19:a27b98998edf 489 {
laserdad 20:8d69cd11b8fa 490 if(data> targetCounts[ch] + tol2) in_range[ch]=0;
laserdad 19:a27b98998edf 491
laserdad 19:a27b98998edf 492 if( (ch ? r_current : ir_current)>step)
laserdad 19:a27b98998edf 493 {
laserdad 19:a27b98998edf 494 (ch ? r_current : ir_current) -= step;
laserdad 20:8d69cd11b8fa 495 updateCurrent = 1;
laserdad 19:a27b98998edf 496 }
laserdad 19:a27b98998edf 497 }
laserdad 20:8d69cd11b8fa 498 else if( data < targetCounts[ch] - ( (in_range[ch]>in_range_persist) ? tol2 : tol1) ) //too low
laserdad 19:a27b98998edf 499 {
laserdad 20:8d69cd11b8fa 500 if(data < targetCounts[ch] - tol2)
laserdad 19:a27b98998edf 501 in_range[ch]=0;
laserdad 20:8d69cd11b8fa 502 if( (ch ? r_current : ir_current) +step < maxCurrent[ch]) //no need to go to full current
laserdad 19:a27b98998edf 503 {
laserdad 19:a27b98998edf 504 (ch ? r_current : ir_current) += step;
laserdad 20:8d69cd11b8fa 505 updateCurrent = 1;
laserdad 19:a27b98998edf 506 }
laserdad 19:a27b98998edf 507 }
laserdad 19:a27b98998edf 508 else
laserdad 19:a27b98998edf 509 {
laserdad 20:8d69cd11b8fa 510 if( (data > (targetCounts[ch]-tol1) ) && (data < (targetCounts[ch]+tol1)) ) //just right
laserdad 20:8d69cd11b8fa 511 {
laserdad 20:8d69cd11b8fa 512 if (in_range[ch] <= in_range_persist)
laserdad 20:8d69cd11b8fa 513 {
laserdad 20:8d69cd11b8fa 514 in_range[ch]++;
laserdad 20:8d69cd11b8fa 515 }
laserdad 20:8d69cd11b8fa 516 }
laserdad 20:8d69cd11b8fa 517 }
laserdad 20:8d69cd11b8fa 518 if (in_range[ch] > in_range_persist)
laserdad 20:8d69cd11b8fa 519 {
laserdad 20:8d69cd11b8fa 520 (ch ? r_in_range : ir_in_range) = 1;
laserdad 20:8d69cd11b8fa 521 }
laserdad 20:8d69cd11b8fa 522 else
laserdad 20:8d69cd11b8fa 523 {
laserdad 20:8d69cd11b8fa 524 (ch ? r_in_range : ir_in_range) = 0;
laserdad 19:a27b98998edf 525 }
laserdad 20:8d69cd11b8fa 526 if(prev_in_range && !(ir_in_range && r_in_range)) {
laserdad 20:8d69cd11b8fa 527 prev_in_range =0;
laserdad 20:8d69cd11b8fa 528 updateFastMode = 1;
laserdad 20:8d69cd11b8fa 529 afull_int_en = AFULL_INT_OFF;
laserdad 20:8d69cd11b8fa 530 ppg_int_en = PPG_INT_ON;
laserdad 20:8d69cd11b8fa 531 }
laserdad 20:8d69cd11b8fa 532
laserdad 20:8d69cd11b8fa 533 else if(!prev_in_range && ir_in_range && r_in_range) {
laserdad 20:8d69cd11b8fa 534 prev_in_range = 1;
laserdad 20:8d69cd11b8fa 535 updateFastMode = 1;
laserdad 20:8d69cd11b8fa 536 afull_int_en = AFULL_INT_ON;
laserdad 20:8d69cd11b8fa 537 ppg_int_en = PPG_INT_OFF;
laserdad 20:8d69cd11b8fa 538 }
laserdad 20:8d69cd11b8fa 539 //pc.printf("ch %d in %d,",ch,in_range[ch]);
laserdad 20:8d69cd11b8fa 540 //if(ch) pc.printf("ir_in_range %d, r_in_range %d\r\n",ir_in_range,r_in_range);
laserdad 0:2da1f69b38fd 541 }