Parth Sagar / Mbed OS monitorhealth_final

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Dependencies:   MAX30003 max32630fthr DS1307

main.cpp@25:381f9fbad85d, 2021-12-21 (annotated)

Committer:
parthsagar2010
Date:
Tue Dec 21 18:28:35 2021 +0000
Revision:
25:381f9fbad85d
Parent:
24:bf49bdcb3a40 
k

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
kidecha_rahul 23:288c5d1babd1 21 DigitalOut S0(P4_0);
kidecha_rahul 23:288c5d1babd1 22 DigitalOut S1(P5_6);
parthsagar2010 25:381f9fbad85d 23 DigitalOut S2(P7_2);
parthsagar2010 25:381f9fbad85d 24 DigitalOut S3(P7_2);
kidecha_rahul 19:7a084dc2f09d 25
kidecha_rahul 22:07eec382c267 26 //channel feedback
kidecha_rahul 23:288c5d1babd1 27 DigitalIn A(P6_0); //P17
kidecha_rahul 23:288c5d1babd1 28 DigitalIn B(P3_5); //P18
kidecha_rahul 23:288c5d1babd1 29 DigitalIn C(P3_4); //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;
parthsagar2010 25:381f9fbad85d 77 S2=0;
parthsagar2010 25:381f9fbad85d 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 15:0356e9454a60 90 DigitalOut rLed(LED2, LED_ON);
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:bf49bdcb3a40 138 uint8_t battery_level[1] ={30};
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};
parthsagar2010 25:381f9fbad85d 145 //uint8_t header_device_id[3] = {0,0,1};
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];
kidecha_rahul 23:288c5d1babd1 154 bool flag_first = false;
kidecha_rahul 23:288c5d1babd1 155 bool timestamp_reader = false;
kidecha_rahul 17:f0008ebb1040 156
kidecha_rahul 17:f0008ebb1040 157
kidecha_rahul 23:288c5d1babd1 158 //---------------------------------software RTC Start---------------------------------------------//
kidecha_rahul 23:288c5d1babd1 159 do
kidecha_rahul 23:288c5d1babd1 160 {
kidecha_rahul 23:288c5d1babd1 161 if (pc.readable())
kidecha_rahul 23:288c5d1babd1 162 {
kidecha_rahul 23:288c5d1babd1 163 scanf("%s",buf);
kidecha_rahul 23:288c5d1babd1 164 //printf("The entered string is %s : \n ",buf);*/
kidecha_rahul 23:288c5d1babd1 165 packet_1 = atoi(buf);
kidecha_rahul 23:288c5d1babd1 166 set_time(packet_1);
parthsagar2010 12:10b49ad3c492 167
kidecha_rahul 23:288c5d1babd1 168 if ((packet_1 % 60) == 0)
kidecha_rahul 23:288c5d1babd1 169 {
kidecha_rahul 23:288c5d1babd1 170 for (int u = 0;u<3;u++)
kidecha_rahul 23:288c5d1babd1 171 {
kidecha_rahul 23:288c5d1babd1 172 if (pc.readable())
kidecha_rahul 23:288c5d1babd1 173 {
kidecha_rahul 23:288c5d1babd1 174 scanf("%s",buf);
kidecha_rahul 23:288c5d1babd1 175 printf("Entered the minute string %s : \n ",buf);
kidecha_rahul 23:288c5d1babd1 176
kidecha_rahul 23:288c5d1babd1 177 packet_1 = atoi(buf);
kidecha_rahul 23:288c5d1babd1 178 set_time(packet_1);
kidecha_rahul 23:288c5d1babd1 179 }
kidecha_rahul 23:288c5d1babd1 180 }
kidecha_rahul 23:288c5d1babd1 181 timestamp_reader = true;
kidecha_rahul 23:288c5d1babd1 182 }
kidecha_rahul 23:288c5d1babd1 183 else
kidecha_rahul 23:288c5d1babd1 184 {
kidecha_rahul 23:288c5d1babd1 185 //printf("The timestamp is not divisible by 60 \n");
kidecha_rahul 23:288c5d1babd1 186 }
kidecha_rahul 23:288c5d1babd1 187 flag_first = true;
kidecha_rahul 23:288c5d1babd1 188
kidecha_rahul 23:288c5d1babd1 189 }
kidecha_rahul 23:288c5d1babd1 190
kidecha_rahul 23:288c5d1babd1 191 } while (timestamp_reader==false); // take the third timestamp
kidecha_rahul 23:288c5d1babd1 192
kidecha_rahul 23:288c5d1babd1 193 //---------------------------------software RTC End---------------------------------------------//
kidecha_rahul 23:288c5d1babd1 194
kidecha_rahul 17:f0008ebb1040 195
parthsagar2010 16:520034b124b6 196 while(1)
parthsagar2010 9:24ecf16eab0f 197 {
kidecha_rahul 23:288c5d1babd1 198
kidecha_rahul 23:288c5d1babd1 199
parthsagar2010 25:381f9fbad85d 200 if ((onesec_counter>=115))
kidecha_rahul 23:288c5d1babd1 201 {
kidecha_rahul 23:288c5d1babd1 202 tic++;
kidecha_rahul 23:288c5d1babd1 203
kidecha_rahul 18:101042d225ef 204 pc.write((uint8_t *)header_device_id, sizeof(header_device_id)); // device ID
parthsagar2010 10:54aa50490b15 205
kidecha_rahul 18:101042d225ef 206 pc.write((uint8_t *)header_packet_type, sizeof(header_packet_type)); // packet type
kidecha_rahul 18:101042d225ef 207
kidecha_rahul 23:288c5d1babd1 208 time_t seconds = time(NULL);
kidecha_rahul 23:288c5d1babd1 209 packet_1 = seconds;
kidecha_rahul 23:288c5d1babd1 210
kidecha_rahul 17:f0008ebb1040 211 //time_t seconds = time(NULL); // if remove it the timestamp will be static
kidecha_rahul 23:288c5d1babd1 212 //packet_1 ++;
kidecha_rahul 23:288c5d1babd1 213 // printf("Time as seconds since January 1, 1970 = %d\n", packet_1);
parthsagar2010 10:54aa50490b15 214 p_1 = packet_1 & 0xff;
parthsagar2010 10:54aa50490b15 215 p_2 = (packet_1 >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 216 p_3 = (packet_1 >> 16) & 0xff;
parthsagar2010 10:54aa50490b15 217 p_4 = (packet_1 >> 24) & 0xff;
parthsagar2010 10:54aa50490b15 218 // checksum_ = checksum_ + (packet_1 & 0xffff) + ((packet_1 >> 16) & 0xffff) ;
parthsagar2010 10:54aa50490b15 219 checksum_ = checksum_ + p_1 + p_2 + p_3 + p_4 ;
parthsagar2010 10:54aa50490b15 220 uint8_t header_packet_id[4] = {p_4,p_3,p_2,p_1};
kidecha_rahul 18:101042d225ef 221 pc.write((uint8_t *)header_packet_id, sizeof(header_packet_id)); // packet ID
kidecha_rahul 18:101042d225ef 222
kidecha_rahul 18:101042d225ef 223
parthsagar2010 16:520034b124b6 224 pc.write((uint8_t *)channel_num, sizeof(channel_num));
kidecha_rahul 18:101042d225ef 225
parthsagar2010 24:bf49bdcb3a40 226 pc.write((uint8_t *)battery_level, sizeof(battery_level));
parthsagar2010 24:bf49bdcb3a40 227
parthsagar2010 10:54aa50490b15 228 onesec_counter_temp = onesec_counter * 2;
parthsagar2010 10:54aa50490b15 229 data_len_1 = onesec_counter_temp & 0xff;
parthsagar2010 10:54aa50490b15 230 data_len_2 = (onesec_counter_temp >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 231 checksum_ = checksum_ + data_len_1 + data_len_2;
parthsagar2010 10:54aa50490b15 232 //pc.write((uint32_t *)packet_1, sizeof(packet_1));
parthsagar2010 10:54aa50490b15 233 uint8_t header_ecg_datalen[2] = {data_len_2,data_len_1};
parthsagar2010 10:54aa50490b15 234 pc.write((uint8_t *)header_ecg_datalen, sizeof(header_ecg_datalen));
kidecha_rahul 18:101042d225ef 235
parthsagar2010 10:54aa50490b15 236 mod_checksum = checksum_ % 65536 ;
parthsagar2010 10:54aa50490b15 237 cksm_1 = mod_checksum & 0xff;
parthsagar2010 10:54aa50490b15 238 cksm_2 = (mod_checksum >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 239 uint8_t header_ecg_checksum[2] = {cksm_2,cksm_1};
parthsagar2010 10:54aa50490b15 240 pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
parthsagar2010 10:54aa50490b15 241
parthsagar2010 10:54aa50490b15 242 pc.write((int16_t *)ecgSample_1sec,onesec_counter * sizeof(int16_t));
parthsagar2010 15:0356e9454a60 243 // printf("Samples per second %d \n", (onesec_counter));
parthsagar2010 10:54aa50490b15 244 onesec_counter = 0;
parthsagar2010 10:54aa50490b15 245 // memset(ecgSample_1sec, 0, sizeof(ecgSample_1sec));
parthsagar2010 10:54aa50490b15 246
parthsagar2010 10:54aa50490b15 247 pc.write((uint8_t *)ending, sizeof(ending));
parthsagar2010 10:54aa50490b15 248 checksum_ = 0;
parthsagar2010 15:0356e9454a60 249 //t.stop();
parthsagar2010 11:300afaf2696b 250 // auto us = t.elapsed_time().count();
parthsagar2010 15:0356e9454a60 251 // float time_taken = us/1000000;
parthsagar2010 15:0356e9454a60 252 // printf("Timer time: %lu ms \n", (time_taken*100));
parthsagar2010 15:0356e9454a60 253 // t.reset();
parthsagar2010 15:0356e9454a60 254 // timer_fast.reset();
kidecha_rahul 19:7a084dc2f09d 255
kidecha_rahul 23:288c5d1babd1 256
kidecha_rahul 23:288c5d1babd1 257 if (tic==10) //C1
kidecha_rahul 19:7a084dc2f09d 258 {
kidecha_rahul 19:7a084dc2f09d 259 S0=1;
kidecha_rahul 19:7a084dc2f09d 260 S1=0;
parthsagar2010 25:381f9fbad85d 261 S2=0;
parthsagar2010 25:381f9fbad85d 262 S3=0;
kidecha_rahul 20:2e999e6568c1 263 channel_num[0]= {1};
kidecha_rahul 19:7a084dc2f09d 264 }
kidecha_rahul 23:288c5d1babd1 265 if (tic==20) //C2
kidecha_rahul 19:7a084dc2f09d 266 {
kidecha_rahul 19:7a084dc2f09d 267 S0=0;
kidecha_rahul 19:7a084dc2f09d 268 S1=1;
parthsagar2010 25:381f9fbad85d 269 S2=0;
parthsagar2010 25:381f9fbad85d 270 S3=0;
kidecha_rahul 20:2e999e6568c1 271 channel_num[0]= {2};
kidecha_rahul 19:7a084dc2f09d 272 }
kidecha_rahul 19:7a084dc2f09d 273
kidecha_rahul 23:288c5d1babd1 274 if (tic==30) // C0
kidecha_rahul 19:7a084dc2f09d 275 {
kidecha_rahul 19:7a084dc2f09d 276 S0=0;
kidecha_rahul 19:7a084dc2f09d 277 S1=0;
parthsagar2010 25:381f9fbad85d 278 S2=0;
parthsagar2010 25:381f9fbad85d 279 S3=0;
kidecha_rahul 20:2e999e6568c1 280 channel_num[0]= {0};
kidecha_rahul 23:288c5d1babd1 281 tic=0;}
kidecha_rahul 23:288c5d1babd1 282
kidecha_rahul 21:193a10530741 283
kidecha_rahul 23:288c5d1babd1 284 // for channel selection
kidecha_rahul 23:288c5d1babd1 285
kidecha_rahul 23:288c5d1babd1 286 if (A==0) //
kidecha_rahul 23:288c5d1babd1 287 {tic=50;
kidecha_rahul 22:07eec382c267 288 S0=0;
kidecha_rahul 22:07eec382c267 289 S1=0;
parthsagar2010 25:381f9fbad85d 290 S2=0;
parthsagar2010 25:381f9fbad85d 291 S3=0;
kidecha_rahul 22:07eec382c267 292 channel_num[0]= {0};}
kidecha_rahul 22:07eec382c267 293
kidecha_rahul 23:288c5d1babd1 294 if (B==0) //
kidecha_rahul 23:288c5d1babd1 295 {tic=60;
kidecha_rahul 21:193a10530741 296 S0=1;
kidecha_rahul 21:193a10530741 297 S1=0;
parthsagar2010 25:381f9fbad85d 298 S2=0;
parthsagar2010 25:381f9fbad85d 299 S3=0;
kidecha_rahul 22:07eec382c267 300 channel_num[0]= {1};}
kidecha_rahul 22:07eec382c267 301
parthsagar2010 25:381f9fbad85d 302 if (C==0) //
kidecha_rahul 23:288c5d1babd1 303 {tic=70;
kidecha_rahul 21:193a10530741 304 S0=0;
kidecha_rahul 21:193a10530741 305 S1=1;
parthsagar2010 25:381f9fbad85d 306 S2=0;
parthsagar2010 25:381f9fbad85d 307 S3=0;
parthsagar2010 25:381f9fbad85d 308 channel_num[0]= {2};}
kidecha_rahul 23:288c5d1babd1 309
kidecha_rahul 23:288c5d1babd1 310
parthsagar2010 9:24ecf16eab0f 311 }
coreyharris 4:06e258ff0b97 312 // Read back ECG samples from the FIFO
kidecha_rahul 23:288c5d1babd1 313 else if((ecgFIFOIntFlag==1))// && (timerflag == 0))
parthsagar2010 9:24ecf16eab0f 314 {
coreyharris 2:812d40f1853d 315
coreyharris 5:f8d1f651bef5 316 ecgFIFOIntFlag = 0;
coreyharris 4:06e258ff0b97 317 status = ecgAFE.readRegister( MAX30003::STATUS ); // Read the STATUS register
coreyharris 2:812d40f1853d 318
coreyharris 3:420d5efbd967 319 // Check if EINT interrupt asserted
parthsagar2010 9:24ecf16eab0f 320 if ( ( status & EINT_STATUS_MASK ) == EINT_STATUS_MASK )
parthsagar2010 9:24ecf16eab0f 321 {
coreyharris 3:420d5efbd967 322
coreyharris 4:06e258ff0b97 323 readECGSamples = 0; // Reset sample counter
coreyharris 3:420d5efbd967 324
coreyharris 2:812d40f1853d 325 do {
coreyharris 6:86ac850c718d 326 ecgFIFO = ecgAFE.readRegister( MAX30003::ECG_FIFO ); // Read FIFO
coreyharris 4:06e258ff0b97 327 ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data
parthsagar2010 10:54aa50490b15 328 ecgSample[readECGSamples] = ((ecgSample[readECGSamples]<<8)&0xFF00)|((ecgSample[readECGSamples]>>8)&0x00FF);
coreyharris 6:86ac850c718d 329 ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS_MASK; // Isolate ETAG
coreyharris 4:06e258ff0b97 330 readECGSamples++; // Increment sample counter
coreyharris 3:420d5efbd967 331
coreyharris 3:420d5efbd967 332 // Check that sample is not last sample in FIFO
coreyharris 6:86ac850c718d 333 } while ( ETAG[readECGSamples-1] == FIFO_VALID_SAMPLE_MASK ||
coreyharris 6:86ac850c718d 334 ETAG[readECGSamples-1] == FIFO_FAST_SAMPLE_MASK );
coreyharris 2:812d40f1853d 335
coreyharris 3:420d5efbd967 336 // Check if FIFO has overflowed
parthsagar2010 9:24ecf16eab0f 337 if( ETAG[readECGSamples - 1] == FIFO_OVF_MASK )
parthsagar2010 9:24ecf16eab0f 338 {
coreyharris 3:420d5efbd967 339 ecgAFE.writeRegister( MAX30003::FIFO_RST , 0); // Reset FIFO
johnGreeneMaxim 7:cf0855a0450a 340 rLed = 1;//notifies the user that an over flow occured
coreyharris 3:420d5efbd967 341 }
parthsagar2010 10:54aa50490b15 342 //uint8_t header_ecg_checksum[2] = {'%','%'};
parthsagar2010 10:54aa50490b15 343 //pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
coreyharris 3:420d5efbd967 344
parthsagar2010 10:54aa50490b15 345 //pc.write((int16_t *)ecgSample,readECGSamples * sizeof(int16_t ));
parthsagar2010 10:54aa50490b15 346 //memcpy(ecgSample_1sec , ecgSample, sizeof(ecgSample));
parthsagar2010 10:54aa50490b15 347
parthsagar2010 10:54aa50490b15 348 //memcpy(ecgSample_1sec + (onesec_counter * sizeof(int16_t)), ecgSample, sizeof(ecgSample));
parthsagar2010 15:0356e9454a60 349
parthsagar2010 15:0356e9454a60 350 if (flip)
parthsagar2010 15:0356e9454a60 351 {
parthsagar2010 15:0356e9454a60 352 sampleps = 12;
parthsagar2010 15:0356e9454a60 353 //printf("Flipped 12\r\n");
parthsagar2010 15:0356e9454a60 354 }
parthsagar2010 15:0356e9454a60 355 else
parthsagar2010 15:0356e9454a60 356 {
parthsagar2010 15:0356e9454a60 357 sampleps = 13;
parthsagar2010 15:0356e9454a60 358 // printf("Flipped 13\r\n");
parthsagar2010 15:0356e9454a60 359 }
parthsagar2010 15:0356e9454a60 360
parthsagar2010 15:0356e9454a60 361 for( idx = 0; idx < sampleps; idx++ )
parthsagar2010 9:24ecf16eab0f 362 {
parthsagar2010 9:24ecf16eab0f 363 //pc.printf("%6d\r\n", ecgSample[idx]);
parthsagar2010 9:24ecf16eab0f 364 ecgSample_1sec[onesec_counter] = ecgSample[idx];
parthsagar2010 10:54aa50490b15 365
parthsagar2010 10:54aa50490b15 366 cksm_1 = ecgSample[idx] & 0xff;
parthsagar2010 10:54aa50490b15 367 cksm_2 = (ecgSample[idx] >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 368 checksum_ += cksm_1 + cksm_2;
parthsagar2010 9:24ecf16eab0f 369 onesec_counter++;
coreyharris 6:86ac850c718d 370 }
parthsagar2010 15:0356e9454a60 371 flip =!flip;
parthsagar2010 15:0356e9454a60 372 rLed = ! rLed;
coreyharris 0:38c49bc37c7c 373 }
parthsagar2010 10:54aa50490b15 374
coreyharris 0:38c49bc37c7c 375 }
coreyharris 0:38c49bc37c7c 376 }
coreyharris 0:38c49bc37c7c 377 }
kidecha_rahul 23:288c5d1babd1 378
kidecha_rahul 23:288c5d1babd1 379
kidecha_rahul 23:288c5d1babd1 380
kidecha_rahul 23:288c5d1babd1 381
coreyharris 0:38c49bc37c7c 382 void ecg_config(MAX30003& ecgAFE) {
kidecha_rahul 23:288c5d1babd1 383
coreyharris 1:86843c27cc81 384 // Reset ECG to clear registers
coreyharris 1:86843c27cc81 385 ecgAFE.writeRegister( MAX30003::SW_RST , 0);
coreyharris 0:38c49bc37c7c 386
coreyharris 1:86843c27cc81 387 // General config register setting
coreyharris 1:86843c27cc81 388 MAX30003::GeneralConfiguration_u CNFG_GEN_r;
coreyharris 3:420d5efbd967 389 CNFG_GEN_r.bits.en_ecg = 1; // Enable ECG channel
coreyharris 3:420d5efbd967 390 CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input
coreyharris 3:420d5efbd967 391 CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input
coreyharris 3:420d5efbd967 392 CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias
coreyharris 3:420d5efbd967 393 CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA
coreyharris 3:420d5efbd967 394 CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection
parthsagar2010 12:10b49ad3c492 395 //CNFG_GEN_r.bits.fmstr = 1; //125 sps FMSTR 1
coreyharris 1:86843c27cc81 396 ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all);
coreyharris 1:86843c27cc81 397
coreyharris 1:86843c27cc81 398
coreyharris 1:86843c27cc81 399 // ECG Config register setting
coreyharris 1:86843c27cc81 400 MAX30003::ECGConfiguration_u CNFG_ECG_r;
coreyharris 3:420d5efbd967 401 CNFG_ECG_r.bits.dlpf = 1; // Digital LPF cutoff = 40Hz
coreyharris 3:420d5efbd967 402 CNFG_ECG_r.bits.dhpf = 1; // Digital HPF cutoff = 0.5Hz
coreyharris 3:420d5efbd967 403 CNFG_ECG_r.bits.gain = 3; // ECG gain = 160V/V
kidecha_rahul 23:288c5d1babd1 404 CNFG_ECG_r.bits.rate = 2; // Sample rate = 128 sps
coreyharris 1:86843c27cc81 405 ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all);
coreyharris 1:86843c27cc81 406
coreyharris 1:86843c27cc81 407
coreyharris 1:86843c27cc81 408 //R-to-R configuration
coreyharris 1:86843c27cc81 409 MAX30003::RtoR1Configuration_u CNFG_RTOR_r;
coreyharris 3:420d5efbd967 410 CNFG_RTOR_r.bits.en_rtor = 1; // Enable R-to-R detection
coreyharris 1:86843c27cc81 411 ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all);
coreyharris 1:86843c27cc81 412
coreyharris 1:86843c27cc81 413
coreyharris 1:86843c27cc81 414 //Manage interrupts register setting
coreyharris 1:86843c27cc81 415 MAX30003::ManageInterrupts_u MNG_INT_r;
coreyharris 3:420d5efbd967 416 MNG_INT_r.bits.efit = 0b00011; // Assert EINT w/ 4 unread samples
coreyharris 3:420d5efbd967 417 MNG_INT_r.bits.clr_rrint = 0b01; // Clear R-to-R on RTOR reg. read back
coreyharris 1:86843c27cc81 418 ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all);
coreyharris 0:38c49bc37c7c 419
coreyharris 0:38c49bc37c7c 420
coreyharris 1:86843c27cc81 421 //Enable interrupts register setting
coreyharris 1:86843c27cc81 422 MAX30003::EnableInterrupts_u EN_INT_r;
coreyharris 5:f8d1f651bef5 423 EN_INT_r.all = 0;
coreyharris 3:420d5efbd967 424 EN_INT_r.bits.en_eint = 1; // Enable EINT interrupt
coreyharris 4:06e258ff0b97 425 EN_INT_r.bits.en_rrint = 0; // Disable R-to-R interrupt
coreyharris 3:420d5efbd967 426 EN_INT_r.bits.intb_type = 3; // Open-drain NMOS with internal pullup
coreyharris 1:86843c27cc81 427 ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all);
coreyharris 1:86843c27cc81 428
coreyharris 1:86843c27cc81 429
coreyharris 1:86843c27cc81 430 //Dyanmic modes config
coreyharris 1:86843c27cc81 431 MAX30003::ManageDynamicModes_u MNG_DYN_r;
coreyharris 3:420d5efbd967 432 MNG_DYN_r.bits.fast = 0; // Fast recovery mode disabled
coreyharris 1:86843c27cc81 433 ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all);
coreyharris 5:f8d1f651bef5 434
coreyharris 5:f8d1f651bef5 435 // MUX Config
coreyharris 5:f8d1f651bef5 436 MAX30003::MuxConfiguration_u CNFG_MUX_r;
coreyharris 5:f8d1f651bef5 437 CNFG_MUX_r.bits.openn = 0; // Connect ECGN to AFE channel
coreyharris 5:f8d1f651bef5 438 CNFG_MUX_r.bits.openp = 0; // Connect ECGP to AFE channel
coreyharris 5:f8d1f651bef5 439 ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all);
coreyharris 1:86843c27cc81 440
coreyharris 1:86843c27cc81 441 return;
coreyharris 0:38c49bc37c7c 442 }
kidecha_rahul 23:288c5d1babd1 443