Parth Sagar / Mbed OS monitorhealth_final_SRTC_RK_BAT_CB1

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Dependencies:   MAX30003 max32630fthr DS1307

main.cpp@24:08d94b31010b, 2021-12-21 (annotated)

Committer:
parthsagar2010
Date:
Tue Dec 21 01:54:50 2021 +0000
Revision:
24:08d94b31010b
Parent:
23:288c5d1babd1 
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Who changed what in which revision?

UserRevisionLine numberNew contents of line
kidecha_rahul 23:288c5d1babd1 1
parthsagar2010 8:6b9359f81cc0 2 #include "MAX30003.h"
coreyharris 0:38c49bc37c7c 3 #include "mbed.h"
coreyharris 0:38c49bc37c7c 4 #include "max32630fthr.h"
kidecha_rahul 23:288c5d1babd1 5 #include "ds1307.h"
parthsagar2010 11:300afaf2696b 6 //#include <BufferedSerial.h>
kidecha_rahul 23:288c5d1babd1 7 #include <string>
parthsagar2010 10:54aa50490b15 8 //#include <Serial.h>
kidecha_rahul 23:288c5d1babd1 9
kidecha_rahul 18:101042d225ef 10 #define TARGET_TX_PIN P3_1
kidecha_rahul 18:101042d225ef 11 #define TARGET_RX_PIN P3_0
kidecha_rahul 23:288c5d1babd1 12
kidecha_rahul 23:288c5d1babd1 13
kidecha_rahul 22:07eec382c267 14 //Timer timer_fast;
kidecha_rahul 23:288c5d1babd1 15 Timer t;
coreyharris 0:38c49bc37c7c 16 MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
kidecha_rahul 23:288c5d1babd1 17
kidecha_rahul 23:288c5d1babd1 18 void task_fast(void);
kidecha_rahul 18:101042d225ef 19 //DigitalOut ledA(LED2);
kidecha_rahul 23:288c5d1babd1 20
parthsagar2010 24:08d94b31010b 21 DigitalOut S0(P0_4);
parthsagar2010 24:08d94b31010b 22 DigitalOut S1(P0_5);
kidecha_rahul 23:288c5d1babd1 23 //DigitalOut S2(P7_2);
kidecha_rahul 23:288c5d1babd1 24 //DigitalOut S3(P7_2);
kidecha_rahul 19:7a084dc2f09d 25
kidecha_rahul 22:07eec382c267 26 //channel feedback
parthsagar2010 24:08d94b31010b 27 DigitalIn A(P1_3); //P17
parthsagar2010 24:08d94b31010b 28 DigitalIn B(P1_4); //P18
parthsagar2010 24:08d94b31010b 29 DigitalIn C(P1_5); //P19
kidecha_rahul 21:193a10530741 30
kidecha_rahul 23:288c5d1babd1 31
coreyharris 0:38c49bc37c7c 32 void ecg_config(MAX30003 &ecgAFE);
parthsagar2010 11:300afaf2696b 33 //BufferedSerial pc(P3_1,P3_0); // Use USB debug probe for serial link static Unbuffered
parthsagar2010 15:0356e9454a60 34 static BufferedSerial pc(TARGET_TX_PIN, TARGET_RX_PIN, 230400); // 230400 works well
kidecha_rahul 23:288c5d1babd1 35
parthsagar2010 10:54aa50490b15 36 //Serial uart_1(USBTX, USBRX); // Use USB debug probe for serial link static Unbuffered
parthsagar2010 10:54aa50490b15 37 //
parthsagar2010 10:54aa50490b15 38 //Serial pc(P3_1,P3_0);
coreyharris 0:38c49bc37c7c 39 volatile bool ecgFIFOIntFlag = 0;
kidecha_rahul 23:288c5d1babd1 40 volatile bool timerflag = 0;
kidecha_rahul 23:288c5d1babd1 41
parthsagar2010 11:300afaf2696b 42 FileHandle *mbed::mbed_override_console(int fd)
parthsagar2010 11:300afaf2696b 43 {
parthsagar2010 11:300afaf2696b 44 return &pc;
parthsagar2010 11:300afaf2696b 45 }
kidecha_rahul 23:288c5d1babd1 46
parthsagar2010 8:6b9359f81cc0 47 void ecgFIFO_callback_1() { // Triggered when the ECG FIFO is about to be full
coreyharris 0:38c49bc37c7c 48
coreyharris 0:38c49bc37c7c 49 ecgFIFOIntFlag = 1;
coreyharris 0:38c49bc37c7c 50 }
kidecha_rahul 23:288c5d1babd1 51
kidecha_rahul 23:288c5d1babd1 52 time_t asUnixTime(int year, int mon, int mday, int hour, int min, int sec) {
kidecha_rahul 23:288c5d1babd1 53 struct tm t;
kidecha_rahul 23:288c5d1babd1 54 t.tm_year = year - 1900;
kidecha_rahul 23:288c5d1babd1 55 t.tm_mon = mon - 1; // convert to 0 based month
kidecha_rahul 23:288c5d1babd1 56 t.tm_mday = mday;
kidecha_rahul 23:288c5d1babd1 57 t.tm_hour = hour;
kidecha_rahul 23:288c5d1babd1 58 t.tm_min = min;
kidecha_rahul 23:288c5d1babd1 59 t.tm_sec = sec;
kidecha_rahul 23:288c5d1babd1 60 t.tm_isdst = -1; // Is Daylight saving time on? 1 = yes, 0 = no, -1 = unknown
kidecha_rahul 23:288c5d1babd1 61
kidecha_rahul 23:288c5d1babd1 62 return mktime(&t); // returns seconds elapsed since January 1, 1970 (begin of the Epoch)
kidecha_rahul 23:288c5d1babd1 63 }
parthsagar2010 11:300afaf2696b 64 int main(void)
coreyharris 3:420d5efbd967 65 {
kidecha_rahul 23:288c5d1babd1 66 uint16_t tic=0;
kidecha_rahul 23:288c5d1babd1 67
kidecha_rahul 23:288c5d1babd1 68 /* S1S0
kidecha_rahul 23:288c5d1babd1 69 00 - C0
kidecha_rahul 23:288c5d1babd1 70 01 - C1
kidecha_rahul 23:288c5d1babd1 71 10 - C2
kidecha_rahul 23:288c5d1babd1 72 11 - C3 */
kidecha_rahul 23:288c5d1babd1 73
kidecha_rahul 23:288c5d1babd1 74
kidecha_rahul 23:288c5d1babd1 75 S0=0; //C0
kidecha_rahul 23:288c5d1babd1 76 S1=0;
kidecha_rahul 23:288c5d1babd1 77 // S2=0;
kidecha_rahul 23:288c5d1babd1 78 // S3=0;
kidecha_rahul 19:7a084dc2f09d 79
kidecha_rahul 23:288c5d1babd1 80
kidecha_rahul 23:288c5d1babd1 81
parthsagar2010 11:300afaf2696b 82 // Constants
coreyharris 4:06e258ff0b97 83 const int EINT_STATUS_MASK = 1 << 23;
coreyharris 6:86ac850c718d 84 const int FIFO_OVF_MASK = 0x7;
coreyharris 6:86ac850c718d 85 const int FIFO_VALID_SAMPLE_MASK = 0x0;
coreyharris 6:86ac850c718d 86 const int FIFO_FAST_SAMPLE_MASK = 0x1;
coreyharris 6:86ac850c718d 87 const int ETAG_BITS_MASK = 0x7;
kidecha_rahul 17:f0008ebb1040 88
kidecha_rahul 23:288c5d1babd1 89 // timer_fast.start();
parthsagar2010 24:08d94b31010b 90 DigitalOut rLed(P0_6);
parthsagar2010 10:54aa50490b15 91 // pc.baud(9600);
coreyharris 3:420d5efbd967 92
parthsagar2010 11:300afaf2696b 93 //pc.set_baud(115200); // Baud rate = 115200
parthsagar2010 11:300afaf2696b 94 //pc.set_format(
parthsagar2010 11:300afaf2696b 95 // /* bits */ 8,
parthsagar2010 11:300afaf2696b 96 // /* parity */ BufferedSerial::None,
parthsagar2010 11:300afaf2696b 97 // /* stop bit */ 1 //1
parthsagar2010 11:300afaf2696b 98 //);
parthsagar2010 10:54aa50490b15 99 //uart_1.baud(115200);
kidecha_rahul 23:288c5d1babd1 100
kidecha_rahul 23:288c5d1babd1 101 //--------------------------------- ECG Initialization ---------------------------------------------//
coreyharris 1:86843c27cc81 102 InterruptIn ecgFIFO_int(P5_4); // Config P5_4 as int. in for the
parthsagar2010 8:6b9359f81cc0 103 ecgFIFO_int.fall(&ecgFIFO_callback_1); // ecg FIFO interrupt at falling edge
coreyharris 0:38c49bc37c7c 104
coreyharris 1:86843c27cc81 105 SPI spiBus(SPI2_MOSI, SPI2_MISO, SPI2_SCK); // SPI bus, P5_1 = MOSI,
coreyharris 1:86843c27cc81 106 // P5_2 = MISO, P5_0 = SCK
parthsagar2010 10:54aa50490b15 107
coreyharris 4:06e258ff0b97 108 MAX30003 ecgAFE(spiBus, P5_3); // New MAX30003 on spiBus, CS = P5_3
parthsagar2010 8:6b9359f81cc0 109
coreyharris 4:06e258ff0b97 110 ecg_config(ecgAFE); // Config ECG
parthsagar2010 12:10b49ad3c492 111
coreyharris 0:38c49bc37c7c 112
coreyharris 4:06e258ff0b97 113 ecgAFE.writeRegister( MAX30003::SYNCH , 0);
coreyharris 0:38c49bc37c7c 114
kidecha_rahul 23:288c5d1babd1 115 //-------------------------------------------------------------------------------------------------//
kidecha_rahul 23:288c5d1babd1 116
coreyharris 4:06e258ff0b97 117 uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status;
coreyharris 1:86843c27cc81 118 int16_t ecgSample[32];
parthsagar2010 9:24ecf16eab0f 119 //bool timerflag = false;
kidecha_rahul 23:288c5d1babd1 120 int16_t ecgSample_1sec[256];
kidecha_rahul 23:288c5d1babd1 121 // uint8_t ecg_1 = 0;
kidecha_rahul 23:288c5d1babd1 122 // uint8_t ecg_2 = 0;
parthsagar2010 10:54aa50490b15 123 uint16_t onesec_counter = 0;
parthsagar2010 10:54aa50490b15 124 uint16_t onesec_counter_temp = 0;
parthsagar2010 10:54aa50490b15 125
kidecha_rahul 22:07eec382c267 126 // int16_t sample = 300;
kidecha_rahul 23:288c5d1babd1 127 // uint8_t final[10];
parthsagar2010 12:10b49ad3c492 128
parthsagar2010 10:54aa50490b15 129 uint16_t checksum_ = 0;
parthsagar2010 10:54aa50490b15 130 uint16_t mod_checksum = 0;
parthsagar2010 10:54aa50490b15 131
parthsagar2010 10:54aa50490b15 132 uint8_t p_1 = 0;
parthsagar2010 10:54aa50490b15 133 uint8_t p_2 = 0;
parthsagar2010 10:54aa50490b15 134 uint8_t p_3 = 0;
parthsagar2010 10:54aa50490b15 135 uint8_t p_4 = 0;
kidecha_rahul 18:101042d225ef 136 // uint8_t channel_num= 1;
kidecha_rahul 20:2e999e6568c1 137 uint8_t channel_num[1]= {0};
parthsagar2010 24:08d94b31010b 138 uint8_t battery_level[1] ={90};
parthsagar2010 10:54aa50490b15 139 uint8_t data_len_1 = 0;
parthsagar2010 10:54aa50490b15 140 uint8_t data_len_2 = 0;
parthsagar2010 12:10b49ad3c492 141 uint32_t packet_1 = 0;
parthsagar2010 10:54aa50490b15 142 uint8_t cksm_1 = 0;
parthsagar2010 10:54aa50490b15 143 uint8_t cksm_2 = 0;
parthsagar2010 10:54aa50490b15 144 uint8_t header_device_id[3] = {0,0,210};
kidecha_rahul 23:288c5d1babd1 145 //uint8_t header_device_id[3] = {0,0,1}; //for rahul
parthsagar2010 10:54aa50490b15 146 uint8_t header_packet_type[2] = {0,2};
parthsagar2010 10:54aa50490b15 147
parthsagar2010 10:54aa50490b15 148 uint8_t ending[5] = {'@','#','%','!','7'};
parthsagar2010 10:54aa50490b15 149
parthsagar2010 15:0356e9454a60 150 bool flip = true;
kidecha_rahul 23:288c5d1babd1 151 int sampleps = 0;
parthsagar2010 15:0356e9454a60 152
kidecha_rahul 23:288c5d1babd1 153 char buf[20];
parthsagar2010 15:0356e9454a60 154 // pc.write("Welcome",8*sizeof(char));
parthsagar2010 15:0356e9454a60 155 // printf("In the main loop"); //printf("In the main loop");
kidecha_rahul 23:288c5d1babd1 156 bool flag_first = false;
kidecha_rahul 23:288c5d1babd1 157 bool timestamp_reader = false;
kidecha_rahul 17:f0008ebb1040 158
kidecha_rahul 17:f0008ebb1040 159
kidecha_rahul 23:288c5d1babd1 160 //---------------------------------software RTC Start---------------------------------------------//
kidecha_rahul 23:288c5d1babd1 161 do
kidecha_rahul 23:288c5d1babd1 162 {
kidecha_rahul 23:288c5d1babd1 163 if (pc.readable())
kidecha_rahul 23:288c5d1babd1 164 {
kidecha_rahul 23:288c5d1babd1 165 scanf("%s",buf);
kidecha_rahul 23:288c5d1babd1 166 //printf("The entered string is %s : \n ",buf);*/
kidecha_rahul 23:288c5d1babd1 167 // buf[20] = 1621297647;
kidecha_rahul 23:288c5d1babd1 168 packet_1 = atoi(buf);
kidecha_rahul 23:288c5d1babd1 169 set_time(packet_1);
parthsagar2010 12:10b49ad3c492 170
kidecha_rahul 23:288c5d1babd1 171 if ((packet_1 % 60) == 0)
kidecha_rahul 23:288c5d1babd1 172 {
kidecha_rahul 23:288c5d1babd1 173 for (int u = 0;u<3;u++)
kidecha_rahul 23:288c5d1babd1 174 {
kidecha_rahul 23:288c5d1babd1 175 if (pc.readable())
kidecha_rahul 23:288c5d1babd1 176 {
kidecha_rahul 23:288c5d1babd1 177 scanf("%s",buf);
kidecha_rahul 23:288c5d1babd1 178 printf("Entered the minute string %s : \n ",buf);
kidecha_rahul 23:288c5d1babd1 179
kidecha_rahul 23:288c5d1babd1 180 packet_1 = atoi(buf);
kidecha_rahul 23:288c5d1babd1 181 set_time(packet_1);
kidecha_rahul 23:288c5d1babd1 182 }
kidecha_rahul 23:288c5d1babd1 183 }
kidecha_rahul 23:288c5d1babd1 184 timestamp_reader = true;
kidecha_rahul 23:288c5d1babd1 185 }
kidecha_rahul 23:288c5d1babd1 186 else
kidecha_rahul 23:288c5d1babd1 187 {
kidecha_rahul 23:288c5d1babd1 188 //printf("The timestamp is not divisible by 60 \n");
kidecha_rahul 23:288c5d1babd1 189 }
kidecha_rahul 23:288c5d1babd1 190 flag_first = true;
kidecha_rahul 23:288c5d1babd1 191
kidecha_rahul 23:288c5d1babd1 192 }
kidecha_rahul 23:288c5d1babd1 193
kidecha_rahul 23:288c5d1babd1 194 } while (timestamp_reader==false); // take the third timestamp
kidecha_rahul 23:288c5d1babd1 195
kidecha_rahul 23:288c5d1babd1 196 //---------------------------------software RTC End---------------------------------------------//
kidecha_rahul 23:288c5d1babd1 197
kidecha_rahul 17:f0008ebb1040 198
parthsagar2010 16:520034b124b6 199 while(1)
parthsagar2010 9:24ecf16eab0f 200 {
kidecha_rahul 23:288c5d1babd1 201
kidecha_rahul 23:288c5d1babd1 202
parthsagar2010 24:08d94b31010b 203 if ((onesec_counter>=125))
kidecha_rahul 23:288c5d1babd1 204 {
kidecha_rahul 23:288c5d1babd1 205 tic++;
kidecha_rahul 23:288c5d1babd1 206
kidecha_rahul 18:101042d225ef 207 pc.write((uint8_t *)header_device_id, sizeof(header_device_id)); // device ID
parthsagar2010 10:54aa50490b15 208
kidecha_rahul 18:101042d225ef 209 pc.write((uint8_t *)header_packet_type, sizeof(header_packet_type)); // packet type
kidecha_rahul 18:101042d225ef 210
kidecha_rahul 23:288c5d1babd1 211 time_t seconds = time(NULL);
kidecha_rahul 23:288c5d1babd1 212 packet_1 = seconds;
kidecha_rahul 23:288c5d1babd1 213
kidecha_rahul 17:f0008ebb1040 214 //time_t seconds = time(NULL); // if remove it the timestamp will be static
kidecha_rahul 23:288c5d1babd1 215 //packet_1 ++;
kidecha_rahul 23:288c5d1babd1 216 // printf("Time as seconds since January 1, 1970 = %d\n", packet_1);
parthsagar2010 10:54aa50490b15 217 p_1 = packet_1 & 0xff;
parthsagar2010 10:54aa50490b15 218 p_2 = (packet_1 >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 219 p_3 = (packet_1 >> 16) & 0xff;
parthsagar2010 10:54aa50490b15 220 p_4 = (packet_1 >> 24) & 0xff;
parthsagar2010 10:54aa50490b15 221 // checksum_ = checksum_ + (packet_1 & 0xffff) + ((packet_1 >> 16) & 0xffff) ;
parthsagar2010 10:54aa50490b15 222 checksum_ = checksum_ + p_1 + p_2 + p_3 + p_4 ;
parthsagar2010 10:54aa50490b15 223 uint8_t header_packet_id[4] = {p_4,p_3,p_2,p_1};
kidecha_rahul 18:101042d225ef 224 pc.write((uint8_t *)header_packet_id, sizeof(header_packet_id)); // packet ID
kidecha_rahul 18:101042d225ef 225
kidecha_rahul 18:101042d225ef 226
parthsagar2010 16:520034b124b6 227 pc.write((uint8_t *)channel_num, sizeof(channel_num));
kidecha_rahul 18:101042d225ef 228
parthsagar2010 24:08d94b31010b 229 pc.write((uint8_t *)battery_level, sizeof(battery_level));
parthsagar2010 24:08d94b31010b 230
parthsagar2010 10:54aa50490b15 231 onesec_counter_temp = onesec_counter * 2;
parthsagar2010 10:54aa50490b15 232 data_len_1 = onesec_counter_temp & 0xff;
parthsagar2010 10:54aa50490b15 233 data_len_2 = (onesec_counter_temp >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 234 checksum_ = checksum_ + data_len_1 + data_len_2;
parthsagar2010 10:54aa50490b15 235 //pc.write((uint32_t *)packet_1, sizeof(packet_1));
parthsagar2010 10:54aa50490b15 236 uint8_t header_ecg_datalen[2] = {data_len_2,data_len_1};
parthsagar2010 10:54aa50490b15 237 pc.write((uint8_t *)header_ecg_datalen, sizeof(header_ecg_datalen));
kidecha_rahul 18:101042d225ef 238
parthsagar2010 10:54aa50490b15 239 mod_checksum = checksum_ % 65536 ;
parthsagar2010 10:54aa50490b15 240 cksm_1 = mod_checksum & 0xff;
parthsagar2010 10:54aa50490b15 241 cksm_2 = (mod_checksum >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 242 uint8_t header_ecg_checksum[2] = {cksm_2,cksm_1};
parthsagar2010 10:54aa50490b15 243 pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
parthsagar2010 10:54aa50490b15 244
parthsagar2010 10:54aa50490b15 245 pc.write((int16_t *)ecgSample_1sec,onesec_counter * sizeof(int16_t));
parthsagar2010 15:0356e9454a60 246 // printf("Samples per second %d \n", (onesec_counter));
parthsagar2010 10:54aa50490b15 247 onesec_counter = 0;
parthsagar2010 10:54aa50490b15 248 // memset(ecgSample_1sec, 0, sizeof(ecgSample_1sec));
parthsagar2010 10:54aa50490b15 249
parthsagar2010 10:54aa50490b15 250 pc.write((uint8_t *)ending, sizeof(ending));
parthsagar2010 10:54aa50490b15 251 checksum_ = 0;
parthsagar2010 15:0356e9454a60 252 //t.stop();
parthsagar2010 11:300afaf2696b 253 // auto us = t.elapsed_time().count();
parthsagar2010 15:0356e9454a60 254 // float time_taken = us/1000000;
parthsagar2010 15:0356e9454a60 255 // printf("Timer time: %lu ms \n", (time_taken*100));
parthsagar2010 15:0356e9454a60 256 // t.reset();
parthsagar2010 15:0356e9454a60 257 // timer_fast.reset();
kidecha_rahul 19:7a084dc2f09d 258
kidecha_rahul 23:288c5d1babd1 259
kidecha_rahul 23:288c5d1babd1 260 if (tic==10) //C1
kidecha_rahul 19:7a084dc2f09d 261 {
kidecha_rahul 19:7a084dc2f09d 262 S0=1;
kidecha_rahul 19:7a084dc2f09d 263 S1=0;
kidecha_rahul 23:288c5d1babd1 264 // S2=0;
kidecha_rahul 23:288c5d1babd1 265 // S3=0;
kidecha_rahul 20:2e999e6568c1 266 channel_num[0]= {1};
kidecha_rahul 19:7a084dc2f09d 267 }
kidecha_rahul 23:288c5d1babd1 268 if (tic==20) //C2
kidecha_rahul 19:7a084dc2f09d 269 {
kidecha_rahul 19:7a084dc2f09d 270 S0=0;
kidecha_rahul 19:7a084dc2f09d 271 S1=1;
kidecha_rahul 23:288c5d1babd1 272 // S2=0;
kidecha_rahul 23:288c5d1babd1 273 // S3=0;
kidecha_rahul 20:2e999e6568c1 274 channel_num[0]= {2};
kidecha_rahul 19:7a084dc2f09d 275 }
kidecha_rahul 19:7a084dc2f09d 276
kidecha_rahul 23:288c5d1babd1 277 if (tic==30) // C0
kidecha_rahul 19:7a084dc2f09d 278 {
kidecha_rahul 19:7a084dc2f09d 279 S0=0;
kidecha_rahul 19:7a084dc2f09d 280 S1=0;
kidecha_rahul 23:288c5d1babd1 281 // S2=0;
kidecha_rahul 23:288c5d1babd1 282 // S3=0;
kidecha_rahul 20:2e999e6568c1 283 channel_num[0]= {0};
kidecha_rahul 23:288c5d1babd1 284 tic=0;}
kidecha_rahul 23:288c5d1babd1 285
kidecha_rahul 21:193a10530741 286
kidecha_rahul 23:288c5d1babd1 287 // for channel selection
kidecha_rahul 23:288c5d1babd1 288
kidecha_rahul 23:288c5d1babd1 289 if (A==0) //
kidecha_rahul 23:288c5d1babd1 290 {tic=50;
kidecha_rahul 22:07eec382c267 291 S0=0;
kidecha_rahul 22:07eec382c267 292 S1=0;
kidecha_rahul 23:288c5d1babd1 293 // S2=0;
kidecha_rahul 23:288c5d1babd1 294 // S3=0;
kidecha_rahul 22:07eec382c267 295 channel_num[0]= {0};}
kidecha_rahul 22:07eec382c267 296
kidecha_rahul 23:288c5d1babd1 297 if (B==0) //
kidecha_rahul 23:288c5d1babd1 298 {tic=60;
kidecha_rahul 21:193a10530741 299 S0=1;
kidecha_rahul 21:193a10530741 300 S1=0;
kidecha_rahul 23:288c5d1babd1 301 // S2=0;
kidecha_rahul 23:288c5d1babd1 302 // S3=0;
kidecha_rahul 22:07eec382c267 303 channel_num[0]= {1};}
kidecha_rahul 22:07eec382c267 304
kidecha_rahul 23:288c5d1babd1 305 if (C==0) //
kidecha_rahul 23:288c5d1babd1 306 {tic=70;
kidecha_rahul 21:193a10530741 307 S0=0;
kidecha_rahul 21:193a10530741 308 S1=1;
kidecha_rahul 23:288c5d1babd1 309 // S2=0;
kidecha_rahul 23:288c5d1babd1 310 // S3=0;
kidecha_rahul 21:193a10530741 311 channel_num[0]= {2};}
kidecha_rahul 23:288c5d1babd1 312
kidecha_rahul 19:7a084dc2f09d 313
parthsagar2010 9:24ecf16eab0f 314 }
coreyharris 4:06e258ff0b97 315 // Read back ECG samples from the FIFO
kidecha_rahul 23:288c5d1babd1 316 else if((ecgFIFOIntFlag==1))// && (timerflag == 0))
parthsagar2010 9:24ecf16eab0f 317 {
coreyharris 2:812d40f1853d 318
coreyharris 5:f8d1f651bef5 319 ecgFIFOIntFlag = 0;
coreyharris 4:06e258ff0b97 320 status = ecgAFE.readRegister( MAX30003::STATUS ); // Read the STATUS register
coreyharris 2:812d40f1853d 321
coreyharris 3:420d5efbd967 322 // Check if EINT interrupt asserted
parthsagar2010 9:24ecf16eab0f 323 if ( ( status & EINT_STATUS_MASK ) == EINT_STATUS_MASK )
parthsagar2010 9:24ecf16eab0f 324 {
coreyharris 3:420d5efbd967 325
coreyharris 4:06e258ff0b97 326 readECGSamples = 0; // Reset sample counter
coreyharris 3:420d5efbd967 327
coreyharris 2:812d40f1853d 328 do {
coreyharris 6:86ac850c718d 329 ecgFIFO = ecgAFE.readRegister( MAX30003::ECG_FIFO ); // Read FIFO
coreyharris 4:06e258ff0b97 330 ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data
parthsagar2010 10:54aa50490b15 331 ecgSample[readECGSamples] = ((ecgSample[readECGSamples]<<8)&0xFF00)|((ecgSample[readECGSamples]>>8)&0x00FF);
coreyharris 6:86ac850c718d 332 ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS_MASK; // Isolate ETAG
coreyharris 4:06e258ff0b97 333 readECGSamples++; // Increment sample counter
coreyharris 3:420d5efbd967 334
coreyharris 3:420d5efbd967 335 // Check that sample is not last sample in FIFO
coreyharris 6:86ac850c718d 336 } while ( ETAG[readECGSamples-1] == FIFO_VALID_SAMPLE_MASK ||
coreyharris 6:86ac850c718d 337 ETAG[readECGSamples-1] == FIFO_FAST_SAMPLE_MASK );
coreyharris 2:812d40f1853d 338
coreyharris 3:420d5efbd967 339 // Check if FIFO has overflowed
parthsagar2010 9:24ecf16eab0f 340 if( ETAG[readECGSamples - 1] == FIFO_OVF_MASK )
parthsagar2010 9:24ecf16eab0f 341 {
coreyharris 3:420d5efbd967 342 ecgAFE.writeRegister( MAX30003::FIFO_RST , 0); // Reset FIFO
johnGreeneMaxim 7:cf0855a0450a 343 rLed = 1;//notifies the user that an over flow occured
coreyharris 3:420d5efbd967 344 }
parthsagar2010 10:54aa50490b15 345 //uint8_t header_ecg_checksum[2] = {'%','%'};
parthsagar2010 10:54aa50490b15 346 //pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
coreyharris 3:420d5efbd967 347
parthsagar2010 10:54aa50490b15 348 //pc.write((int16_t *)ecgSample,readECGSamples * sizeof(int16_t ));
parthsagar2010 10:54aa50490b15 349 //memcpy(ecgSample_1sec , ecgSample, sizeof(ecgSample));
parthsagar2010 10:54aa50490b15 350
parthsagar2010 10:54aa50490b15 351 //memcpy(ecgSample_1sec + (onesec_counter * sizeof(int16_t)), ecgSample, sizeof(ecgSample));
parthsagar2010 15:0356e9454a60 352
parthsagar2010 15:0356e9454a60 353 if (flip)
parthsagar2010 15:0356e9454a60 354 {
parthsagar2010 15:0356e9454a60 355 sampleps = 12;
parthsagar2010 15:0356e9454a60 356 //printf("Flipped 12\r\n");
parthsagar2010 15:0356e9454a60 357 }
parthsagar2010 15:0356e9454a60 358 else
parthsagar2010 15:0356e9454a60 359 {
parthsagar2010 15:0356e9454a60 360 sampleps = 13;
parthsagar2010 15:0356e9454a60 361 // printf("Flipped 13\r\n");
parthsagar2010 15:0356e9454a60 362 }
parthsagar2010 15:0356e9454a60 363
parthsagar2010 15:0356e9454a60 364 for( idx = 0; idx < sampleps; idx++ )
parthsagar2010 9:24ecf16eab0f 365 {
parthsagar2010 9:24ecf16eab0f 366 //pc.printf("%6d\r\n", ecgSample[idx]);
parthsagar2010 9:24ecf16eab0f 367 ecgSample_1sec[onesec_counter] = ecgSample[idx];
parthsagar2010 10:54aa50490b15 368
parthsagar2010 10:54aa50490b15 369 cksm_1 = ecgSample[idx] & 0xff;
parthsagar2010 10:54aa50490b15 370 cksm_2 = (ecgSample[idx] >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 371 checksum_ += cksm_1 + cksm_2;
parthsagar2010 9:24ecf16eab0f 372 onesec_counter++;
coreyharris 6:86ac850c718d 373 }
parthsagar2010 15:0356e9454a60 374 flip =!flip;
parthsagar2010 15:0356e9454a60 375 rLed = ! rLed;
coreyharris 0:38c49bc37c7c 376 }
parthsagar2010 10:54aa50490b15 377
coreyharris 0:38c49bc37c7c 378 }
coreyharris 0:38c49bc37c7c 379 }
coreyharris 0:38c49bc37c7c 380 }
kidecha_rahul 23:288c5d1babd1 381
kidecha_rahul 23:288c5d1babd1 382
kidecha_rahul 23:288c5d1babd1 383
kidecha_rahul 23:288c5d1babd1 384
coreyharris 0:38c49bc37c7c 385 void ecg_config(MAX30003& ecgAFE) {
kidecha_rahul 23:288c5d1babd1 386
coreyharris 1:86843c27cc81 387 // Reset ECG to clear registers
coreyharris 1:86843c27cc81 388 ecgAFE.writeRegister( MAX30003::SW_RST , 0);
coreyharris 0:38c49bc37c7c 389
coreyharris 1:86843c27cc81 390 // General config register setting
coreyharris 1:86843c27cc81 391 MAX30003::GeneralConfiguration_u CNFG_GEN_r;
coreyharris 3:420d5efbd967 392 CNFG_GEN_r.bits.en_ecg = 1; // Enable ECG channel
coreyharris 3:420d5efbd967 393 CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input
coreyharris 3:420d5efbd967 394 CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input
coreyharris 3:420d5efbd967 395 CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias
coreyharris 3:420d5efbd967 396 CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA
coreyharris 3:420d5efbd967 397 CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection
parthsagar2010 12:10b49ad3c492 398 //CNFG_GEN_r.bits.fmstr = 1; //125 sps FMSTR 1
coreyharris 1:86843c27cc81 399 ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all);
coreyharris 1:86843c27cc81 400
coreyharris 1:86843c27cc81 401
coreyharris 1:86843c27cc81 402 // ECG Config register setting
coreyharris 1:86843c27cc81 403 MAX30003::ECGConfiguration_u CNFG_ECG_r;
coreyharris 3:420d5efbd967 404 CNFG_ECG_r.bits.dlpf = 1; // Digital LPF cutoff = 40Hz
coreyharris 3:420d5efbd967 405 CNFG_ECG_r.bits.dhpf = 1; // Digital HPF cutoff = 0.5Hz
coreyharris 3:420d5efbd967 406 CNFG_ECG_r.bits.gain = 3; // ECG gain = 160V/V
kidecha_rahul 23:288c5d1babd1 407 CNFG_ECG_r.bits.rate = 2; // Sample rate = 128 sps
coreyharris 1:86843c27cc81 408 ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all);
coreyharris 1:86843c27cc81 409
coreyharris 1:86843c27cc81 410
coreyharris 1:86843c27cc81 411 //R-to-R configuration
coreyharris 1:86843c27cc81 412 MAX30003::RtoR1Configuration_u CNFG_RTOR_r;
coreyharris 3:420d5efbd967 413 CNFG_RTOR_r.bits.en_rtor = 1; // Enable R-to-R detection
coreyharris 1:86843c27cc81 414 ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all);
coreyharris 1:86843c27cc81 415
coreyharris 1:86843c27cc81 416
coreyharris 1:86843c27cc81 417 //Manage interrupts register setting
coreyharris 1:86843c27cc81 418 MAX30003::ManageInterrupts_u MNG_INT_r;
coreyharris 3:420d5efbd967 419 MNG_INT_r.bits.efit = 0b00011; // Assert EINT w/ 4 unread samples
coreyharris 3:420d5efbd967 420 MNG_INT_r.bits.clr_rrint = 0b01; // Clear R-to-R on RTOR reg. read back
coreyharris 1:86843c27cc81 421 ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all);
coreyharris 0:38c49bc37c7c 422
coreyharris 0:38c49bc37c7c 423
coreyharris 1:86843c27cc81 424 //Enable interrupts register setting
coreyharris 1:86843c27cc81 425 MAX30003::EnableInterrupts_u EN_INT_r;
coreyharris 5:f8d1f651bef5 426 EN_INT_r.all = 0;
coreyharris 3:420d5efbd967 427 EN_INT_r.bits.en_eint = 1; // Enable EINT interrupt
coreyharris 4:06e258ff0b97 428 EN_INT_r.bits.en_rrint = 0; // Disable R-to-R interrupt
coreyharris 3:420d5efbd967 429 EN_INT_r.bits.intb_type = 3; // Open-drain NMOS with internal pullup
coreyharris 1:86843c27cc81 430 ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all);
coreyharris 1:86843c27cc81 431
coreyharris 1:86843c27cc81 432
coreyharris 1:86843c27cc81 433 //Dyanmic modes config
coreyharris 1:86843c27cc81 434 MAX30003::ManageDynamicModes_u MNG_DYN_r;
coreyharris 3:420d5efbd967 435 MNG_DYN_r.bits.fast = 0; // Fast recovery mode disabled
coreyharris 1:86843c27cc81 436 ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all);
coreyharris 5:f8d1f651bef5 437
coreyharris 5:f8d1f651bef5 438 // MUX Config
coreyharris 5:f8d1f651bef5 439 MAX30003::MuxConfiguration_u CNFG_MUX_r;
coreyharris 5:f8d1f651bef5 440 CNFG_MUX_r.bits.openn = 0; // Connect ECGN to AFE channel
coreyharris 5:f8d1f651bef5 441 CNFG_MUX_r.bits.openp = 0; // Connect ECGP to AFE channel
coreyharris 5:f8d1f651bef5 442 ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all);
coreyharris 1:86843c27cc81 443
coreyharris 1:86843c27cc81 444 return;
coreyharris 0:38c49bc37c7c 445 }
kidecha_rahul 23:288c5d1babd1 446