MH / Mbed OS MAX30003WING_monitorhealth_beta_test1_HRTC_RK

working - HRTC, MUX

Dependencies:   MAX30003 ds3231 max32630fthr

main.cpp@25:e1919afd0e2d, 2021-12-21 (annotated)

Committer:
parthsagar2010
Date:
Tue Dec 21 01:30:08 2021 +0000
Revision:
25:e1919afd0e2d
Parent:
23:7590d93dfa5f 
k

Who changed what in which revision?

UserRevisionLine numberNew contents of line
coreyharris 6:86ac850c718d 1
parthsagar2010 8:6b9359f81cc0 2 #include "MAX30003.h"
coreyharris 0:38c49bc37c7c 3 #include "mbed.h"
coreyharris 0:38c49bc37c7c 4 #include "max32630fthr.h"
kidecha_rahul 22:07eec382c267 5 //#include "ds1307.h"
parthsagar2010 11:300afaf2696b 6 //#include <BufferedSerial.h>
kidecha_rahul 22:07eec382c267 7 //#include <string>
parthsagar2010 10:54aa50490b15 8 //#include <Serial.h>
kidecha_rahul 17:f0008ebb1040 9 #include "ds3231.h"
parthsagar2010 11:300afaf2696b 10
kidecha_rahul 18:101042d225ef 11 #define TARGET_TX_PIN P3_1
kidecha_rahul 18:101042d225ef 12 #define TARGET_RX_PIN P3_0
parthsagar2010 11:300afaf2696b 13
kidecha_rahul 17:f0008ebb1040 14 #define SDA P3_4
kidecha_rahul 17:f0008ebb1040 15 #define SCL P3_5
kidecha_rahul 17:f0008ebb1040 16
kidecha_rahul 22:07eec382c267 17 //Timer timer_fast;
kidecha_rahul 22:07eec382c267 18 //Timer t;
coreyharris 0:38c49bc37c7c 19 MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
coreyharris 0:38c49bc37c7c 20
parthsagar2010 25:e1919afd0e2d 21 void task_fast(void);
kidecha_rahul 18:101042d225ef 22 //DigitalOut ledA(LED2);
parthsagar2010 13:0e7bbc06083f 23
parthsagar2010 25:e1919afd0e2d 24 //DigitalOut led1(P0_6); // output declaration
parthsagar2010 25:e1919afd0e2d 25
kidecha_rahul 19:7a084dc2f09d 26 //DigitalOut EN(P1_7);
kidecha_rahul 19:7a084dc2f09d 27 //DigitalOut A0(P1_4);
kidecha_rahul 19:7a084dc2f09d 28 //DigitalOut A1(P7_2);
kidecha_rahul 19:7a084dc2f09d 29
kidecha_rahul 22:07eec382c267 30 // mux controller pins
parthsagar2010 25:e1919afd0e2d 31 DigitalOut S0(P0_4);
parthsagar2010 25:e1919afd0e2d 32 DigitalOut S1(P0_5);
parthsagar2010 25:e1919afd0e2d 33 //DigitalOut S2(P7_2);
parthsagar2010 25:e1919afd0e2d 34 //DigitalOut S3(P7_2);
kidecha_rahul 19:7a084dc2f09d 35
kidecha_rahul 22:07eec382c267 36 //channel feedback
parthsagar2010 25:e1919afd0e2d 37 DigitalIn A(P1_3); //P17
parthsagar2010 25:e1919afd0e2d 38 DigitalIn B(P1_4); //P18
parthsagar2010 25:e1919afd0e2d 39 DigitalIn C(P1_5); //P19
kidecha_rahul 21:193a10530741 40
parthsagar2010 25:e1919afd0e2d 41 //HRTC GPIO
parthsagar2010 25:e1919afd0e2d 42 DigitalIn SW(P6_3);
parthsagar2010 16:520034b124b6 43
coreyharris 0:38c49bc37c7c 44 void ecg_config(MAX30003 &ecgAFE);
parthsagar2010 11:300afaf2696b 45 //BufferedSerial pc(P3_1,P3_0); // Use USB debug probe for serial link static Unbuffered
parthsagar2010 15:0356e9454a60 46 static BufferedSerial pc(TARGET_TX_PIN, TARGET_RX_PIN, 230400); // 230400 works well
parthsagar2010 11:300afaf2696b 47
parthsagar2010 10:54aa50490b15 48 //Serial uart_1(USBTX, USBRX); // Use USB debug probe for serial link static Unbuffered
parthsagar2010 10:54aa50490b15 49 //
parthsagar2010 10:54aa50490b15 50 //Serial pc(P3_1,P3_0);
coreyharris 0:38c49bc37c7c 51 volatile bool ecgFIFOIntFlag = 0;
kidecha_rahul 22:07eec382c267 52 //volatile bool timerflag = 0;
parthsagar2010 11:300afaf2696b 53
parthsagar2010 11:300afaf2696b 54 FileHandle *mbed::mbed_override_console(int fd)
parthsagar2010 11:300afaf2696b 55 {
parthsagar2010 11:300afaf2696b 56 return &pc;
parthsagar2010 11:300afaf2696b 57 }
parthsagar2010 11:300afaf2696b 58
parthsagar2010 8:6b9359f81cc0 59 void ecgFIFO_callback_1() { // Triggered when the ECG FIFO is about to be full
coreyharris 0:38c49bc37c7c 60
coreyharris 0:38c49bc37c7c 61 ecgFIFOIntFlag = 1;
coreyharris 0:38c49bc37c7c 62 }
coreyharris 0:38c49bc37c7c 63
kidecha_rahul 21:193a10530741 64
parthsagar2010 11:300afaf2696b 65 int main(void)
coreyharris 3:420d5efbd967 66 {
parthsagar2010 25:e1919afd0e2d 67 uint16_t tic=0;
kidecha_rahul 21:193a10530741 68
kidecha_rahul 19:7a084dc2f09d 69
kidecha_rahul 19:7a084dc2f09d 70 S0=0;
parthsagar2010 25:e1919afd0e2d 71 S1=0;
kidecha_rahul 23:7590d93dfa5f 72 // S2=0;
kidecha_rahul 23:7590d93dfa5f 73 // S3=0;
parthsagar2010 16:520034b124b6 74
parthsagar2010 16:520034b124b6 75
kidecha_rahul 19:7a084dc2f09d 76
parthsagar2010 11:300afaf2696b 77 // Constants
coreyharris 4:06e258ff0b97 78 const int EINT_STATUS_MASK = 1 << 23;
coreyharris 6:86ac850c718d 79 const int FIFO_OVF_MASK = 0x7;
coreyharris 6:86ac850c718d 80 const int FIFO_VALID_SAMPLE_MASK = 0x0;
coreyharris 6:86ac850c718d 81 const int FIFO_FAST_SAMPLE_MASK = 0x1;
coreyharris 6:86ac850c718d 82 const int ETAG_BITS_MASK = 0x7;
kidecha_rahul 17:f0008ebb1040 83
kidecha_rahul 23:7590d93dfa5f 84
kidecha_rahul 23:7590d93dfa5f 85
kidecha_rahul 17:f0008ebb1040 86 //-------------------------------------------------------------RTC-------------------------------------------------------------//
kidecha_rahul 23:7590d93dfa5f 87 //instantiate rtc object
kidecha_rahul 17:f0008ebb1040 88 Ds3231 rtc(SDA, SCL);
parthsagar2010 25:e1919afd0e2d 89
parthsagar2010 25:e1919afd0e2d 90 if (SW==0)
kidecha_rahul 23:7590d93dfa5f 91 {
kidecha_rahul 23:7590d93dfa5f 92 uint16_t rtn_val;
kidecha_rahul 23:7590d93dfa5f 93 //time = 12:00:00 AM 12hr mode
parthsagar2010 25:e1919afd0e2d 94 ds3231_time_t time = {50,50,13,1,0}; //seconds, min, hours, am=0/pm=1, mode 12=1/24=0
kidecha_rahul 17:f0008ebb1040 95
kidecha_rahul 17:f0008ebb1040 96 rtn_val = rtc.set_time(time);
kidecha_rahul 17:f0008ebb1040 97
kidecha_rahul 23:7590d93dfa5f 98 //see datasheet for calendar format
parthsagar2010 25:e1919afd0e2d 99 ds3231_calendar_t calendar = {5,29,10,21}; //day date month year
kidecha_rahul 17:f0008ebb1040 100
kidecha_rahul 23:7590d93dfa5f 101 rtn_val = rtc.set_calendar(calendar);
kidecha_rahul 17:f0008ebb1040 102
kidecha_rahul 17:f0008ebb1040 103 //see datasheet for calendar format
kidecha_rahul 23:7590d93dfa5f 104 ds3231_cntl_stat_t data = {0x1C, 0x08};
kidecha_rahul 17:f0008ebb1040 105
kidecha_rahul 23:7590d93dfa5f 106 rtn_val = rtc.set_cntl_stat_reg(data);
kidecha_rahul 23:7590d93dfa5f 107 }//------------------------------------------------------------------------------------------------------------------------------//
kidecha_rahul 17:f0008ebb1040 108
kidecha_rahul 17:f0008ebb1040 109
kidecha_rahul 22:07eec382c267 110 //timer_fast.start();
parthsagar2010 25:e1919afd0e2d 111 DigitalOut rLed(P0_6);
parthsagar2010 10:54aa50490b15 112 // pc.baud(9600);
coreyharris 3:420d5efbd967 113
parthsagar2010 11:300afaf2696b 114 //pc.set_baud(115200); // Baud rate = 115200
parthsagar2010 11:300afaf2696b 115 //pc.set_format(
parthsagar2010 11:300afaf2696b 116 // /* bits */ 8,
parthsagar2010 11:300afaf2696b 117 // /* parity */ BufferedSerial::None,
parthsagar2010 11:300afaf2696b 118 // /* stop bit */ 1 //1
parthsagar2010 11:300afaf2696b 119 //);
parthsagar2010 10:54aa50490b15 120 //uart_1.baud(115200);
coreyharris 1:86843c27cc81 121 InterruptIn ecgFIFO_int(P5_4); // Config P5_4 as int. in for the
parthsagar2010 8:6b9359f81cc0 122 ecgFIFO_int.fall(&ecgFIFO_callback_1); // ecg FIFO interrupt at falling edge
coreyharris 0:38c49bc37c7c 123
coreyharris 1:86843c27cc81 124 SPI spiBus(SPI2_MOSI, SPI2_MISO, SPI2_SCK); // SPI bus, P5_1 = MOSI,
coreyharris 1:86843c27cc81 125 // P5_2 = MISO, P5_0 = SCK
parthsagar2010 10:54aa50490b15 126
coreyharris 4:06e258ff0b97 127 MAX30003 ecgAFE(spiBus, P5_3); // New MAX30003 on spiBus, CS = P5_3
parthsagar2010 8:6b9359f81cc0 128
coreyharris 4:06e258ff0b97 129 ecg_config(ecgAFE); // Config ECG
parthsagar2010 12:10b49ad3c492 130
coreyharris 0:38c49bc37c7c 131
coreyharris 4:06e258ff0b97 132 ecgAFE.writeRegister( MAX30003::SYNCH , 0);
coreyharris 0:38c49bc37c7c 133
coreyharris 4:06e258ff0b97 134 uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status;
coreyharris 1:86843c27cc81 135 int16_t ecgSample[32];
parthsagar2010 9:24ecf16eab0f 136 //bool timerflag = false;
kidecha_rahul 22:07eec382c267 137 int16_t ecgSample_1sec[125];
parthsagar2010 10:54aa50490b15 138 uint8_t ecg_1 = 0;
parthsagar2010 10:54aa50490b15 139 uint8_t ecg_2 = 0;
parthsagar2010 10:54aa50490b15 140 uint16_t onesec_counter = 0;
parthsagar2010 10:54aa50490b15 141 uint16_t onesec_counter_temp = 0;
parthsagar2010 10:54aa50490b15 142
kidecha_rahul 22:07eec382c267 143 // int16_t sample = 300;
kidecha_rahul 22:07eec382c267 144 // uint8_t final[10];
parthsagar2010 12:10b49ad3c492 145
parthsagar2010 10:54aa50490b15 146 uint16_t checksum_ = 0;
parthsagar2010 10:54aa50490b15 147 uint16_t mod_checksum = 0;
parthsagar2010 10:54aa50490b15 148
parthsagar2010 10:54aa50490b15 149 uint8_t p_1 = 0;
parthsagar2010 10:54aa50490b15 150 uint8_t p_2 = 0;
parthsagar2010 10:54aa50490b15 151 uint8_t p_3 = 0;
parthsagar2010 10:54aa50490b15 152 uint8_t p_4 = 0;
kidecha_rahul 18:101042d225ef 153 // uint8_t channel_num= 1;
kidecha_rahul 20:2e999e6568c1 154 uint8_t channel_num[1]= {0};
parthsagar2010 25:e1919afd0e2d 155 uint8_t battery_level[1] ={40};
parthsagar2010 10:54aa50490b15 156 uint8_t data_len_1 = 0;
parthsagar2010 10:54aa50490b15 157 uint8_t data_len_2 = 0;
parthsagar2010 12:10b49ad3c492 158 uint32_t packet_1 = 0;
parthsagar2010 10:54aa50490b15 159 uint8_t cksm_1 = 0;
parthsagar2010 10:54aa50490b15 160 uint8_t cksm_2 = 0;
parthsagar2010 10:54aa50490b15 161 uint8_t header_device_id[3] = {0,0,210};
kidecha_rahul 19:7a084dc2f09d 162 // uint8_t header_device_id[3] = {0,0,1}; //for rahul
parthsagar2010 10:54aa50490b15 163 uint8_t header_packet_type[2] = {0,2};
parthsagar2010 10:54aa50490b15 164
parthsagar2010 10:54aa50490b15 165 uint8_t ending[5] = {'@','#','%','!','7'};
parthsagar2010 10:54aa50490b15 166
parthsagar2010 15:0356e9454a60 167 bool flip = true;
kidecha_rahul 22:07eec382c267 168 uint8_t sampleps = 0;
parthsagar2010 15:0356e9454a60 169
parthsagar2010 16:520034b124b6 170 char buf[20];//={"1622326341"};
parthsagar2010 15:0356e9454a60 171 // pc.write("Welcome",8*sizeof(char));
parthsagar2010 15:0356e9454a60 172 // printf("In the main loop"); //printf("In the main loop");
parthsagar2010 11:300afaf2696b 173 bool flag_first = false;
parthsagar2010 15:0356e9454a60 174 bool timestamp_reader = false;
kidecha_rahul 17:f0008ebb1040 175
kidecha_rahul 17:f0008ebb1040 176
kidecha_rahul 19:7a084dc2f09d 177 //---------------------------------hardware RTC check---------------------------------------------//
kidecha_rahul 17:f0008ebb1040 178 time_t epoch_time;
kidecha_rahul 17:f0008ebb1040 179
kidecha_rahul 17:f0008ebb1040 180 do {
kidecha_rahul 23:7590d93dfa5f 181 // rtc.get_time(&time);
kidecha_rahul 23:7590d93dfa5f 182 // rtc.get_calendar(&calendar);
kidecha_rahul 17:f0008ebb1040 183 epoch_time = rtc.get_epoch();
kidecha_rahul 17:f0008ebb1040 184 //printf("seconds since the Epoch: %ld\n", epoch_time);
parthsagar2010 12:10b49ad3c492 185
kidecha_rahul 17:f0008ebb1040 186 packet_1 = epoch_time;
kidecha_rahul 23:7590d93dfa5f 187 }while((epoch_time % 60)!=0); // come out at the start of minute
kidecha_rahul 23:7590d93dfa5f 188
kidecha_rahul 19:7a084dc2f09d 189
kidecha_rahul 17:f0008ebb1040 190
parthsagar2010 16:520034b124b6 191 while(1)
parthsagar2010 9:24ecf16eab0f 192 {
kidecha_rahul 19:7a084dc2f09d 193
parthsagar2010 15:0356e9454a60 194 if ((onesec_counter>=125))
parthsagar2010 25:e1919afd0e2d 195 {
parthsagar2010 25:e1919afd0e2d 196 tic++;
parthsagar2010 11:300afaf2696b 197 //t.start();
parthsagar2010 10:54aa50490b15 198 //ledA = !ledA;
kidecha_rahul 18:101042d225ef 199 pc.write((uint8_t *)header_device_id, sizeof(header_device_id)); // device ID
parthsagar2010 10:54aa50490b15 200
kidecha_rahul 18:101042d225ef 201 pc.write((uint8_t *)header_packet_type, sizeof(header_packet_type)); // packet type
kidecha_rahul 18:101042d225ef 202
kidecha_rahul 17:f0008ebb1040 203 epoch_time = rtc.get_epoch();
kidecha_rahul 17:f0008ebb1040 204 //time_t seconds = time(NULL); // if remove it the timestamp will be static
kidecha_rahul 17:f0008ebb1040 205 packet_1 = epoch_time; //
parthsagar2010 12:10b49ad3c492 206 //packet_1 ++;
parthsagar2010 15:0356e9454a60 207 // printf("Time as seconds since January 1, 1970 = %d\n", packet_1);
parthsagar2010 10:54aa50490b15 208 p_1 = packet_1 & 0xff;
parthsagar2010 10:54aa50490b15 209 p_2 = (packet_1 >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 210 p_3 = (packet_1 >> 16) & 0xff;
parthsagar2010 10:54aa50490b15 211 p_4 = (packet_1 >> 24) & 0xff;
parthsagar2010 10:54aa50490b15 212 // checksum_ = checksum_ + (packet_1 & 0xffff) + ((packet_1 >> 16) & 0xffff) ;
parthsagar2010 10:54aa50490b15 213 checksum_ = checksum_ + p_1 + p_2 + p_3 + p_4 ;
parthsagar2010 10:54aa50490b15 214 uint8_t header_packet_id[4] = {p_4,p_3,p_2,p_1};
kidecha_rahul 18:101042d225ef 215 pc.write((uint8_t *)header_packet_id, sizeof(header_packet_id)); // packet ID
kidecha_rahul 18:101042d225ef 216
kidecha_rahul 18:101042d225ef 217
parthsagar2010 16:520034b124b6 218 pc.write((uint8_t *)channel_num, sizeof(channel_num));
kidecha_rahul 18:101042d225ef 219
parthsagar2010 25:e1919afd0e2d 220 pc.write((uint8_t *)battery_level, sizeof(battery_level));
parthsagar2010 25:e1919afd0e2d 221
parthsagar2010 10:54aa50490b15 222 onesec_counter_temp = onesec_counter * 2;
parthsagar2010 10:54aa50490b15 223 data_len_1 = onesec_counter_temp & 0xff;
parthsagar2010 10:54aa50490b15 224 data_len_2 = (onesec_counter_temp >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 225 checksum_ = checksum_ + data_len_1 + data_len_2;
parthsagar2010 10:54aa50490b15 226 //pc.write((uint32_t *)packet_1, sizeof(packet_1));
parthsagar2010 10:54aa50490b15 227 uint8_t header_ecg_datalen[2] = {data_len_2,data_len_1};
parthsagar2010 10:54aa50490b15 228 pc.write((uint8_t *)header_ecg_datalen, sizeof(header_ecg_datalen));
kidecha_rahul 18:101042d225ef 229
parthsagar2010 10:54aa50490b15 230 mod_checksum = checksum_ % 65536 ;
parthsagar2010 10:54aa50490b15 231 cksm_1 = mod_checksum & 0xff;
parthsagar2010 10:54aa50490b15 232 cksm_2 = (mod_checksum >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 233 uint8_t header_ecg_checksum[2] = {cksm_2,cksm_1};
parthsagar2010 10:54aa50490b15 234 pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
parthsagar2010 10:54aa50490b15 235
parthsagar2010 10:54aa50490b15 236 pc.write((int16_t *)ecgSample_1sec,onesec_counter * sizeof(int16_t));
parthsagar2010 15:0356e9454a60 237 // printf("Samples per second %d \n", (onesec_counter));
parthsagar2010 10:54aa50490b15 238 onesec_counter = 0;
parthsagar2010 10:54aa50490b15 239 // memset(ecgSample_1sec, 0, sizeof(ecgSample_1sec));
parthsagar2010 10:54aa50490b15 240
parthsagar2010 10:54aa50490b15 241 pc.write((uint8_t *)ending, sizeof(ending));
parthsagar2010 10:54aa50490b15 242 checksum_ = 0;
parthsagar2010 15:0356e9454a60 243 //t.stop();
parthsagar2010 11:300afaf2696b 244 // auto us = t.elapsed_time().count();
parthsagar2010 15:0356e9454a60 245 // float time_taken = us/1000000;
parthsagar2010 15:0356e9454a60 246 // printf("Timer time: %lu ms \n", (time_taken*100));
parthsagar2010 15:0356e9454a60 247 // t.reset();
parthsagar2010 15:0356e9454a60 248 // timer_fast.reset();
kidecha_rahul 19:7a084dc2f09d 249
parthsagar2010 25:e1919afd0e2d 250 if (tic==10) //C1
kidecha_rahul 19:7a084dc2f09d 251 {
kidecha_rahul 19:7a084dc2f09d 252 S0=1;
kidecha_rahul 19:7a084dc2f09d 253 S1=0;
parthsagar2010 25:e1919afd0e2d 254 // S2=0;
parthsagar2010 25:e1919afd0e2d 255 // S3=0;
kidecha_rahul 20:2e999e6568c1 256 channel_num[0]= {1};
kidecha_rahul 19:7a084dc2f09d 257 }
parthsagar2010 25:e1919afd0e2d 258 if (tic==20) //C2
kidecha_rahul 19:7a084dc2f09d 259 {
kidecha_rahul 19:7a084dc2f09d 260 S0=0;
kidecha_rahul 19:7a084dc2f09d 261 S1=1;
parthsagar2010 25:e1919afd0e2d 262 // S2=0;
parthsagar2010 25:e1919afd0e2d 263 // S3=0;
kidecha_rahul 20:2e999e6568c1 264 channel_num[0]= {2};
kidecha_rahul 19:7a084dc2f09d 265 }
kidecha_rahul 19:7a084dc2f09d 266
parthsagar2010 25:e1919afd0e2d 267 if (tic==30) // C0
kidecha_rahul 19:7a084dc2f09d 268 {
kidecha_rahul 19:7a084dc2f09d 269 S0=0;
kidecha_rahul 19:7a084dc2f09d 270 S1=0;
parthsagar2010 25:e1919afd0e2d 271 // S2=0;
parthsagar2010 25:e1919afd0e2d 272 // S3=0;
kidecha_rahul 20:2e999e6568c1 273 channel_num[0]= {0};
parthsagar2010 25:e1919afd0e2d 274 tic=0;}
parthsagar2010 25:e1919afd0e2d 275
kidecha_rahul 21:193a10530741 276
parthsagar2010 25:e1919afd0e2d 277 // for channel selection
parthsagar2010 25:e1919afd0e2d 278
parthsagar2010 25:e1919afd0e2d 279 if (A==0) //
parthsagar2010 25:e1919afd0e2d 280 {tic=50;
kidecha_rahul 22:07eec382c267 281 S0=0;
kidecha_rahul 22:07eec382c267 282 S1=0;
parthsagar2010 25:e1919afd0e2d 283 // S2=0;
parthsagar2010 25:e1919afd0e2d 284 // S3=0;
kidecha_rahul 22:07eec382c267 285 channel_num[0]= {0};}
kidecha_rahul 22:07eec382c267 286
parthsagar2010 25:e1919afd0e2d 287 if (B==0) //
parthsagar2010 25:e1919afd0e2d 288 {tic=60;
kidecha_rahul 21:193a10530741 289 S0=1;
kidecha_rahul 21:193a10530741 290 S1=0;
parthsagar2010 25:e1919afd0e2d 291 // S2=0;
parthsagar2010 25:e1919afd0e2d 292 // S3=0;
kidecha_rahul 22:07eec382c267 293 channel_num[0]= {1};}
kidecha_rahul 22:07eec382c267 294
parthsagar2010 25:e1919afd0e2d 295 if (C==0) //
parthsagar2010 25:e1919afd0e2d 296 {tic=70;
kidecha_rahul 21:193a10530741 297 S0=0;
kidecha_rahul 21:193a10530741 298 S1=1;
parthsagar2010 25:e1919afd0e2d 299 // S2=0;
parthsagar2010 25:e1919afd0e2d 300 // S3=0;
parthsagar2010 25:e1919afd0e2d 301 channel_num[0]= {2};}
parthsagar2010 25:e1919afd0e2d 302
kidecha_rahul 19:7a084dc2f09d 303
parthsagar2010 9:24ecf16eab0f 304 }
coreyharris 4:06e258ff0b97 305 // Read back ECG samples from the FIFO
kidecha_rahul 20:2e999e6568c1 306 else if(ecgFIFOIntFlag==1)// && (timerflag == 0))
parthsagar2010 9:24ecf16eab0f 307 {
coreyharris 2:812d40f1853d 308
coreyharris 5:f8d1f651bef5 309 ecgFIFOIntFlag = 0;
coreyharris 4:06e258ff0b97 310 status = ecgAFE.readRegister( MAX30003::STATUS ); // Read the STATUS register
coreyharris 2:812d40f1853d 311
coreyharris 3:420d5efbd967 312 // Check if EINT interrupt asserted
parthsagar2010 9:24ecf16eab0f 313 if ( ( status & EINT_STATUS_MASK ) == EINT_STATUS_MASK )
parthsagar2010 9:24ecf16eab0f 314 {
coreyharris 3:420d5efbd967 315
coreyharris 4:06e258ff0b97 316 readECGSamples = 0; // Reset sample counter
coreyharris 3:420d5efbd967 317
coreyharris 2:812d40f1853d 318 do {
coreyharris 6:86ac850c718d 319 ecgFIFO = ecgAFE.readRegister( MAX30003::ECG_FIFO ); // Read FIFO
coreyharris 4:06e258ff0b97 320 ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data
parthsagar2010 10:54aa50490b15 321 ecgSample[readECGSamples] = ((ecgSample[readECGSamples]<<8)&0xFF00)|((ecgSample[readECGSamples]>>8)&0x00FF);
coreyharris 6:86ac850c718d 322 ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS_MASK; // Isolate ETAG
coreyharris 4:06e258ff0b97 323 readECGSamples++; // Increment sample counter
coreyharris 3:420d5efbd967 324
coreyharris 3:420d5efbd967 325 // Check that sample is not last sample in FIFO
coreyharris 6:86ac850c718d 326 } while ( ETAG[readECGSamples-1] == FIFO_VALID_SAMPLE_MASK ||
coreyharris 6:86ac850c718d 327 ETAG[readECGSamples-1] == FIFO_FAST_SAMPLE_MASK );
coreyharris 2:812d40f1853d 328
coreyharris 3:420d5efbd967 329 // Check if FIFO has overflowed
parthsagar2010 9:24ecf16eab0f 330 if( ETAG[readECGSamples - 1] == FIFO_OVF_MASK )
parthsagar2010 9:24ecf16eab0f 331 {
coreyharris 3:420d5efbd967 332 ecgAFE.writeRegister( MAX30003::FIFO_RST , 0); // Reset FIFO
johnGreeneMaxim 7:cf0855a0450a 333 rLed = 1;//notifies the user that an over flow occured
coreyharris 3:420d5efbd967 334 }
parthsagar2010 10:54aa50490b15 335 //uint8_t header_ecg_checksum[2] = {'%','%'};
parthsagar2010 10:54aa50490b15 336 //pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
coreyharris 3:420d5efbd967 337
parthsagar2010 10:54aa50490b15 338 //pc.write((int16_t *)ecgSample,readECGSamples * sizeof(int16_t ));
parthsagar2010 10:54aa50490b15 339 //memcpy(ecgSample_1sec , ecgSample, sizeof(ecgSample));
parthsagar2010 10:54aa50490b15 340
parthsagar2010 10:54aa50490b15 341 //memcpy(ecgSample_1sec + (onesec_counter * sizeof(int16_t)), ecgSample, sizeof(ecgSample));
parthsagar2010 15:0356e9454a60 342
parthsagar2010 15:0356e9454a60 343 if (flip)
parthsagar2010 15:0356e9454a60 344 {
parthsagar2010 15:0356e9454a60 345 sampleps = 12;
parthsagar2010 15:0356e9454a60 346 //printf("Flipped 12\r\n");
parthsagar2010 15:0356e9454a60 347 }
parthsagar2010 15:0356e9454a60 348 else
parthsagar2010 15:0356e9454a60 349 {
parthsagar2010 15:0356e9454a60 350 sampleps = 13;
parthsagar2010 15:0356e9454a60 351 // printf("Flipped 13\r\n");
parthsagar2010 15:0356e9454a60 352 }
parthsagar2010 15:0356e9454a60 353
parthsagar2010 15:0356e9454a60 354 for( idx = 0; idx < sampleps; idx++ )
parthsagar2010 9:24ecf16eab0f 355 {
parthsagar2010 9:24ecf16eab0f 356 //pc.printf("%6d\r\n", ecgSample[idx]);
parthsagar2010 9:24ecf16eab0f 357 ecgSample_1sec[onesec_counter] = ecgSample[idx];
parthsagar2010 10:54aa50490b15 358
parthsagar2010 10:54aa50490b15 359 cksm_1 = ecgSample[idx] & 0xff;
parthsagar2010 10:54aa50490b15 360 cksm_2 = (ecgSample[idx] >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 361 checksum_ += cksm_1 + cksm_2;
parthsagar2010 9:24ecf16eab0f 362 onesec_counter++;
coreyharris 6:86ac850c718d 363 }
parthsagar2010 15:0356e9454a60 364 flip =!flip;
parthsagar2010 15:0356e9454a60 365 rLed = ! rLed;
coreyharris 0:38c49bc37c7c 366 }
parthsagar2010 10:54aa50490b15 367
coreyharris 0:38c49bc37c7c 368 }
coreyharris 0:38c49bc37c7c 369 }
coreyharris 0:38c49bc37c7c 370 }
coreyharris 0:38c49bc37c7c 371
coreyharris 0:38c49bc37c7c 372
coreyharris 0:38c49bc37c7c 373
coreyharris 0:38c49bc37c7c 374
coreyharris 0:38c49bc37c7c 375 void ecg_config(MAX30003& ecgAFE) {
coreyharris 0:38c49bc37c7c 376
coreyharris 1:86843c27cc81 377 // Reset ECG to clear registers
coreyharris 1:86843c27cc81 378 ecgAFE.writeRegister( MAX30003::SW_RST , 0);
coreyharris 0:38c49bc37c7c 379
coreyharris 1:86843c27cc81 380 // General config register setting
coreyharris 1:86843c27cc81 381 MAX30003::GeneralConfiguration_u CNFG_GEN_r;
coreyharris 3:420d5efbd967 382 CNFG_GEN_r.bits.en_ecg = 1; // Enable ECG channel
kidecha_rahul 21:193a10530741 383 CNFG_GEN_r.bits.fmstr = 1; // set frequency to 32000kHz
coreyharris 3:420d5efbd967 384 CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input
coreyharris 3:420d5efbd967 385 CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input
coreyharris 3:420d5efbd967 386 CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias
coreyharris 3:420d5efbd967 387 CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA
coreyharris 3:420d5efbd967 388 CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection
parthsagar2010 12:10b49ad3c492 389 //CNFG_GEN_r.bits.fmstr = 1; //125 sps FMSTR 1
coreyharris 1:86843c27cc81 390 ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all);
coreyharris 1:86843c27cc81 391
coreyharris 1:86843c27cc81 392
coreyharris 1:86843c27cc81 393 // ECG Config register setting
coreyharris 1:86843c27cc81 394 MAX30003::ECGConfiguration_u CNFG_ECG_r;
coreyharris 3:420d5efbd967 395 CNFG_ECG_r.bits.dlpf = 1; // Digital LPF cutoff = 40Hz
coreyharris 3:420d5efbd967 396 CNFG_ECG_r.bits.dhpf = 1; // Digital HPF cutoff = 0.5Hz
coreyharris 3:420d5efbd967 397 CNFG_ECG_r.bits.gain = 3; // ECG gain = 160V/V
kidecha_rahul 21:193a10530741 398 CNFG_ECG_r.bits.rate = 2; // Sample rate = 125 sps
coreyharris 1:86843c27cc81 399 ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all);
coreyharris 1:86843c27cc81 400
coreyharris 1:86843c27cc81 401
coreyharris 1:86843c27cc81 402 //R-to-R configuration
coreyharris 1:86843c27cc81 403 MAX30003::RtoR1Configuration_u CNFG_RTOR_r;
coreyharris 3:420d5efbd967 404 CNFG_RTOR_r.bits.en_rtor = 1; // Enable R-to-R detection
coreyharris 1:86843c27cc81 405 ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all);
coreyharris 1:86843c27cc81 406
coreyharris 1:86843c27cc81 407
coreyharris 1:86843c27cc81 408 //Manage interrupts register setting
coreyharris 1:86843c27cc81 409 MAX30003::ManageInterrupts_u MNG_INT_r;
coreyharris 3:420d5efbd967 410 MNG_INT_r.bits.efit = 0b00011; // Assert EINT w/ 4 unread samples
coreyharris 3:420d5efbd967 411 MNG_INT_r.bits.clr_rrint = 0b01; // Clear R-to-R on RTOR reg. read back
coreyharris 1:86843c27cc81 412 ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all);
coreyharris 0:38c49bc37c7c 413
coreyharris 0:38c49bc37c7c 414
coreyharris 1:86843c27cc81 415 //Enable interrupts register setting
coreyharris 1:86843c27cc81 416 MAX30003::EnableInterrupts_u EN_INT_r;
coreyharris 5:f8d1f651bef5 417 EN_INT_r.all = 0;
coreyharris 3:420d5efbd967 418 EN_INT_r.bits.en_eint = 1; // Enable EINT interrupt
coreyharris 4:06e258ff0b97 419 EN_INT_r.bits.en_rrint = 0; // Disable R-to-R interrupt
coreyharris 3:420d5efbd967 420 EN_INT_r.bits.intb_type = 3; // Open-drain NMOS with internal pullup
coreyharris 1:86843c27cc81 421 ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all);
coreyharris 1:86843c27cc81 422
coreyharris 1:86843c27cc81 423
coreyharris 1:86843c27cc81 424 //Dyanmic modes config
coreyharris 1:86843c27cc81 425 MAX30003::ManageDynamicModes_u MNG_DYN_r;
coreyharris 3:420d5efbd967 426 MNG_DYN_r.bits.fast = 0; // Fast recovery mode disabled
coreyharris 1:86843c27cc81 427 ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all);
coreyharris 5:f8d1f651bef5 428
coreyharris 5:f8d1f651bef5 429 // MUX Config
coreyharris 5:f8d1f651bef5 430 MAX30003::MuxConfiguration_u CNFG_MUX_r;
coreyharris 5:f8d1f651bef5 431 CNFG_MUX_r.bits.openn = 0; // Connect ECGN to AFE channel
coreyharris 5:f8d1f651bef5 432 CNFG_MUX_r.bits.openp = 0; // Connect ECGP to AFE channel
coreyharris 5:f8d1f651bef5 433 ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all);
coreyharris 1:86843c27cc81 434
coreyharris 1:86843c27cc81 435 return;
coreyharris 0:38c49bc37c7c 436 }
coreyharris 0:38c49bc37c7c 437