MH / Mbed OS MAX30003WING_monitorhealth_customboard_L

final

Dependencies:   MAX30003 max32630fthr DS1307

main.cpp@24:98332ec40aff, 2021-08-17 (annotated)

Committer:
kidecha_rahul
Date:
Tue Aug 17 16:39:40 2021 +0000
Revision:
24:98332ec40aff
Parent:
23:288c5d1babd1
Child:
25:06ba30a29754
update - SRTC, MUX, reset

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 24:98332ec40aff 13 #define SDA P3_4
kidecha_rahul 24:98332ec40aff 14 #define SCL P3_5
kidecha_rahul 24:98332ec40aff 15
kidecha_rahul 24:98332ec40aff 16
kidecha_rahul 24:98332ec40aff 17 #define I2C_SDA P5_7
kidecha_rahul 24:98332ec40aff 18 #define I2C_SCL P6_0
kidecha_rahul 24:98332ec40aff 19
kidecha_rahul 24:98332ec40aff 20 Ds3231 rtc(SDA, SCL);
kidecha_rahul 24:98332ec40aff 21
kidecha_rahul 22:07eec382c267 22 //Timer timer_fast;
kidecha_rahul 23:288c5d1babd1 23 Timer t;
coreyharris 0:38c49bc37c7c 24 MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
kidecha_rahul 23:288c5d1babd1 25
kidecha_rahul 23:288c5d1babd1 26 void task_fast(void);
kidecha_rahul 18:101042d225ef 27 //DigitalOut ledA(LED2);
kidecha_rahul 23:288c5d1babd1 28
kidecha_rahul 23:288c5d1babd1 29 DigitalOut S0(P4_0);
kidecha_rahul 23:288c5d1babd1 30 DigitalOut S1(P5_6);
kidecha_rahul 23:288c5d1babd1 31 //DigitalOut S2(P7_2);
kidecha_rahul 23:288c5d1babd1 32 //DigitalOut S3(P7_2);
kidecha_rahul 19:7a084dc2f09d 33
kidecha_rahul 22:07eec382c267 34 //channel feedback
kidecha_rahul 24:98332ec40aff 35 //DigitalIn A(P6_0); //P17
kidecha_rahul 24:98332ec40aff 36 //DigitalIn B(P3_5); //P18
kidecha_rahul 24:98332ec40aff 37 //DigitalIn C(P3_4); //P19
kidecha_rahul 21:193a10530741 38
kidecha_rahul 23:288c5d1babd1 39
coreyharris 0:38c49bc37c7c 40 void ecg_config(MAX30003 &ecgAFE);
parthsagar2010 11:300afaf2696b 41 //BufferedSerial pc(P3_1,P3_0); // Use USB debug probe for serial link static Unbuffered
parthsagar2010 15:0356e9454a60 42 static BufferedSerial pc(TARGET_TX_PIN, TARGET_RX_PIN, 230400); // 230400 works well
kidecha_rahul 23:288c5d1babd1 43
parthsagar2010 10:54aa50490b15 44 //Serial uart_1(USBTX, USBRX); // Use USB debug probe for serial link static Unbuffered
parthsagar2010 10:54aa50490b15 45 //
parthsagar2010 10:54aa50490b15 46 //Serial pc(P3_1,P3_0);
coreyharris 0:38c49bc37c7c 47 volatile bool ecgFIFOIntFlag = 0;
kidecha_rahul 23:288c5d1babd1 48 volatile bool timerflag = 0;
kidecha_rahul 23:288c5d1babd1 49
parthsagar2010 11:300afaf2696b 50 FileHandle *mbed::mbed_override_console(int fd)
parthsagar2010 11:300afaf2696b 51 {
parthsagar2010 11:300afaf2696b 52 return &pc;
parthsagar2010 11:300afaf2696b 53 }
kidecha_rahul 23:288c5d1babd1 54
parthsagar2010 8:6b9359f81cc0 55 void ecgFIFO_callback_1() { // Triggered when the ECG FIFO is about to be full
coreyharris 0:38c49bc37c7c 56
coreyharris 0:38c49bc37c7c 57 ecgFIFOIntFlag = 1;
coreyharris 0:38c49bc37c7c 58 }
kidecha_rahul 23:288c5d1babd1 59
kidecha_rahul 23:288c5d1babd1 60 time_t asUnixTime(int year, int mon, int mday, int hour, int min, int sec) {
kidecha_rahul 23:288c5d1babd1 61 struct tm t;
kidecha_rahul 23:288c5d1babd1 62 t.tm_year = year - 1900;
kidecha_rahul 23:288c5d1babd1 63 t.tm_mon = mon - 1; // convert to 0 based month
kidecha_rahul 23:288c5d1babd1 64 t.tm_mday = mday;
kidecha_rahul 23:288c5d1babd1 65 t.tm_hour = hour;
kidecha_rahul 23:288c5d1babd1 66 t.tm_min = min;
kidecha_rahul 23:288c5d1babd1 67 t.tm_sec = sec;
kidecha_rahul 23:288c5d1babd1 68 t.tm_isdst = -1; // Is Daylight saving time on? 1 = yes, 0 = no, -1 = unknown
kidecha_rahul 23:288c5d1babd1 69
kidecha_rahul 23:288c5d1babd1 70 return mktime(&t); // returns seconds elapsed since January 1, 1970 (begin of the Epoch)
kidecha_rahul 23:288c5d1babd1 71 }
parthsagar2010 11:300afaf2696b 72 int main(void)
coreyharris 3:420d5efbd967 73 {
kidecha_rahul 23:288c5d1babd1 74 uint16_t tic=0;
kidecha_rahul 23:288c5d1babd1 75
kidecha_rahul 23:288c5d1babd1 76 /* S1S0
kidecha_rahul 23:288c5d1babd1 77 00 - C0
kidecha_rahul 23:288c5d1babd1 78 01 - C1
kidecha_rahul 23:288c5d1babd1 79 10 - C2
kidecha_rahul 23:288c5d1babd1 80 11 - C3 */
kidecha_rahul 23:288c5d1babd1 81
kidecha_rahul 23:288c5d1babd1 82
kidecha_rahul 23:288c5d1babd1 83 S0=0; //C0
kidecha_rahul 23:288c5d1babd1 84 S1=0;
kidecha_rahul 23:288c5d1babd1 85 // S2=0;
kidecha_rahul 23:288c5d1babd1 86 // S3=0;
kidecha_rahul 19:7a084dc2f09d 87
kidecha_rahul 23:288c5d1babd1 88
kidecha_rahul 23:288c5d1babd1 89
parthsagar2010 11:300afaf2696b 90 // Constants
coreyharris 4:06e258ff0b97 91 const int EINT_STATUS_MASK = 1 << 23;
coreyharris 6:86ac850c718d 92 const int FIFO_OVF_MASK = 0x7;
coreyharris 6:86ac850c718d 93 const int FIFO_VALID_SAMPLE_MASK = 0x0;
coreyharris 6:86ac850c718d 94 const int FIFO_FAST_SAMPLE_MASK = 0x1;
coreyharris 6:86ac850c718d 95 const int ETAG_BITS_MASK = 0x7;
kidecha_rahul 17:f0008ebb1040 96
kidecha_rahul 23:288c5d1babd1 97 // timer_fast.start();
parthsagar2010 15:0356e9454a60 98 DigitalOut rLed(LED2, LED_ON);
parthsagar2010 10:54aa50490b15 99 // pc.baud(9600);
coreyharris 3:420d5efbd967 100
parthsagar2010 11:300afaf2696b 101 //pc.set_baud(115200); // Baud rate = 115200
parthsagar2010 11:300afaf2696b 102 //pc.set_format(
parthsagar2010 11:300afaf2696b 103 // /* bits */ 8,
parthsagar2010 11:300afaf2696b 104 // /* parity */ BufferedSerial::None,
parthsagar2010 11:300afaf2696b 105 // /* stop bit */ 1 //1
parthsagar2010 11:300afaf2696b 106 //);
parthsagar2010 10:54aa50490b15 107 //uart_1.baud(115200);
kidecha_rahul 23:288c5d1babd1 108
kidecha_rahul 23:288c5d1babd1 109 //--------------------------------- ECG Initialization ---------------------------------------------//
coreyharris 1:86843c27cc81 110 InterruptIn ecgFIFO_int(P5_4); // Config P5_4 as int. in for the
parthsagar2010 8:6b9359f81cc0 111 ecgFIFO_int.fall(&ecgFIFO_callback_1); // ecg FIFO interrupt at falling edge
coreyharris 0:38c49bc37c7c 112
coreyharris 1:86843c27cc81 113 SPI spiBus(SPI2_MOSI, SPI2_MISO, SPI2_SCK); // SPI bus, P5_1 = MOSI,
coreyharris 1:86843c27cc81 114 // P5_2 = MISO, P5_0 = SCK
parthsagar2010 10:54aa50490b15 115
coreyharris 4:06e258ff0b97 116 MAX30003 ecgAFE(spiBus, P5_3); // New MAX30003 on spiBus, CS = P5_3
parthsagar2010 8:6b9359f81cc0 117
coreyharris 4:06e258ff0b97 118 ecg_config(ecgAFE); // Config ECG
parthsagar2010 12:10b49ad3c492 119
coreyharris 0:38c49bc37c7c 120
coreyharris 4:06e258ff0b97 121 ecgAFE.writeRegister( MAX30003::SYNCH , 0);
coreyharris 0:38c49bc37c7c 122
kidecha_rahul 23:288c5d1babd1 123 //-------------------------------------------------------------------------------------------------//
kidecha_rahul 23:288c5d1babd1 124
coreyharris 4:06e258ff0b97 125 uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status;
coreyharris 1:86843c27cc81 126 int16_t ecgSample[32];
parthsagar2010 9:24ecf16eab0f 127 //bool timerflag = false;
kidecha_rahul 23:288c5d1babd1 128 int16_t ecgSample_1sec[256];
kidecha_rahul 23:288c5d1babd1 129 // uint8_t ecg_1 = 0;
kidecha_rahul 23:288c5d1babd1 130 // uint8_t ecg_2 = 0;
parthsagar2010 10:54aa50490b15 131 uint16_t onesec_counter = 0;
parthsagar2010 10:54aa50490b15 132 uint16_t onesec_counter_temp = 0;
parthsagar2010 10:54aa50490b15 133
kidecha_rahul 22:07eec382c267 134 // int16_t sample = 300;
kidecha_rahul 23:288c5d1babd1 135 // uint8_t final[10];
parthsagar2010 12:10b49ad3c492 136
parthsagar2010 10:54aa50490b15 137 uint16_t checksum_ = 0;
parthsagar2010 10:54aa50490b15 138 uint16_t mod_checksum = 0;
parthsagar2010 10:54aa50490b15 139
parthsagar2010 10:54aa50490b15 140 uint8_t p_1 = 0;
parthsagar2010 10:54aa50490b15 141 uint8_t p_2 = 0;
parthsagar2010 10:54aa50490b15 142 uint8_t p_3 = 0;
parthsagar2010 10:54aa50490b15 143 uint8_t p_4 = 0;
kidecha_rahul 18:101042d225ef 144 // uint8_t channel_num= 1;
kidecha_rahul 20:2e999e6568c1 145 uint8_t channel_num[1]= {0};
parthsagar2010 10:54aa50490b15 146 uint8_t data_len_1 = 0;
parthsagar2010 10:54aa50490b15 147 uint8_t data_len_2 = 0;
parthsagar2010 12:10b49ad3c492 148 uint32_t packet_1 = 0;
parthsagar2010 10:54aa50490b15 149 uint8_t cksm_1 = 0;
parthsagar2010 10:54aa50490b15 150 uint8_t cksm_2 = 0;
parthsagar2010 10:54aa50490b15 151 uint8_t header_device_id[3] = {0,0,210};
kidecha_rahul 23:288c5d1babd1 152 //uint8_t header_device_id[3] = {0,0,1}; //for rahul
parthsagar2010 10:54aa50490b15 153 uint8_t header_packet_type[2] = {0,2};
parthsagar2010 10:54aa50490b15 154
parthsagar2010 10:54aa50490b15 155 uint8_t ending[5] = {'@','#','%','!','7'};
parthsagar2010 10:54aa50490b15 156
parthsagar2010 15:0356e9454a60 157 bool flip = true;
kidecha_rahul 23:288c5d1babd1 158 int sampleps = 0;
parthsagar2010 15:0356e9454a60 159
kidecha_rahul 23:288c5d1babd1 160 char buf[20];
parthsagar2010 15:0356e9454a60 161 // pc.write("Welcome",8*sizeof(char));
parthsagar2010 15:0356e9454a60 162 // printf("In the main loop"); //printf("In the main loop");
kidecha_rahul 23:288c5d1babd1 163 bool flag_first = false;
kidecha_rahul 23:288c5d1babd1 164 bool timestamp_reader = false;
kidecha_rahul 17:f0008ebb1040 165
kidecha_rahul 17:f0008ebb1040 166
kidecha_rahul 23:288c5d1babd1 167 //---------------------------------software RTC Start---------------------------------------------//
kidecha_rahul 23:288c5d1babd1 168 do
kidecha_rahul 23:288c5d1babd1 169 {
kidecha_rahul 23:288c5d1babd1 170 if (pc.readable())
kidecha_rahul 23:288c5d1babd1 171 {
kidecha_rahul 23:288c5d1babd1 172 scanf("%s",buf);
kidecha_rahul 23:288c5d1babd1 173 //printf("The entered string is %s : \n ",buf);*/
kidecha_rahul 23:288c5d1babd1 174 // buf[20] = 1621297647;
kidecha_rahul 23:288c5d1babd1 175 packet_1 = atoi(buf);
kidecha_rahul 23:288c5d1babd1 176 set_time(packet_1);
parthsagar2010 12:10b49ad3c492 177
kidecha_rahul 23:288c5d1babd1 178 if ((packet_1 % 60) == 0)
kidecha_rahul 23:288c5d1babd1 179 {
kidecha_rahul 23:288c5d1babd1 180 for (int u = 0;u<3;u++)
kidecha_rahul 23:288c5d1babd1 181 {
kidecha_rahul 23:288c5d1babd1 182 if (pc.readable())
kidecha_rahul 23:288c5d1babd1 183 {
kidecha_rahul 23:288c5d1babd1 184 scanf("%s",buf);
kidecha_rahul 23:288c5d1babd1 185 printf("Entered the minute string %s : \n ",buf);
kidecha_rahul 23:288c5d1babd1 186
kidecha_rahul 23:288c5d1babd1 187 packet_1 = atoi(buf);
kidecha_rahul 23:288c5d1babd1 188 set_time(packet_1);
kidecha_rahul 23:288c5d1babd1 189 }
kidecha_rahul 23:288c5d1babd1 190 }
kidecha_rahul 23:288c5d1babd1 191 timestamp_reader = true;
kidecha_rahul 23:288c5d1babd1 192 }
kidecha_rahul 23:288c5d1babd1 193 else
kidecha_rahul 23:288c5d1babd1 194 {
kidecha_rahul 23:288c5d1babd1 195 //printf("The timestamp is not divisible by 60 \n");
kidecha_rahul 23:288c5d1babd1 196 }
kidecha_rahul 23:288c5d1babd1 197 flag_first = true;
kidecha_rahul 23:288c5d1babd1 198
kidecha_rahul 23:288c5d1babd1 199 }
kidecha_rahul 23:288c5d1babd1 200
kidecha_rahul 23:288c5d1babd1 201 } while (timestamp_reader==false); // take the third timestamp
kidecha_rahul 23:288c5d1babd1 202
kidecha_rahul 23:288c5d1babd1 203 //---------------------------------software RTC End---------------------------------------------//
kidecha_rahul 23:288c5d1babd1 204
kidecha_rahul 17:f0008ebb1040 205
parthsagar2010 16:520034b124b6 206 while(1)
parthsagar2010 9:24ecf16eab0f 207 {
kidecha_rahul 23:288c5d1babd1 208
kidecha_rahul 23:288c5d1babd1 209
kidecha_rahul 23:288c5d1babd1 210 if ((onesec_counter>=112))
kidecha_rahul 23:288c5d1babd1 211 {
kidecha_rahul 23:288c5d1babd1 212 tic++;
kidecha_rahul 23:288c5d1babd1 213
kidecha_rahul 18:101042d225ef 214 pc.write((uint8_t *)header_device_id, sizeof(header_device_id)); // device ID
parthsagar2010 10:54aa50490b15 215
kidecha_rahul 18:101042d225ef 216 pc.write((uint8_t *)header_packet_type, sizeof(header_packet_type)); // packet type
kidecha_rahul 18:101042d225ef 217
kidecha_rahul 23:288c5d1babd1 218 time_t seconds = time(NULL);
kidecha_rahul 23:288c5d1babd1 219 packet_1 = seconds;
kidecha_rahul 23:288c5d1babd1 220
kidecha_rahul 17:f0008ebb1040 221 //time_t seconds = time(NULL); // if remove it the timestamp will be static
kidecha_rahul 23:288c5d1babd1 222 //packet_1 ++;
kidecha_rahul 23:288c5d1babd1 223 // printf("Time as seconds since January 1, 1970 = %d\n", packet_1);
parthsagar2010 10:54aa50490b15 224 p_1 = packet_1 & 0xff;
parthsagar2010 10:54aa50490b15 225 p_2 = (packet_1 >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 226 p_3 = (packet_1 >> 16) & 0xff;
parthsagar2010 10:54aa50490b15 227 p_4 = (packet_1 >> 24) & 0xff;
parthsagar2010 10:54aa50490b15 228 // checksum_ = checksum_ + (packet_1 & 0xffff) + ((packet_1 >> 16) & 0xffff) ;
parthsagar2010 10:54aa50490b15 229 checksum_ = checksum_ + p_1 + p_2 + p_3 + p_4 ;
parthsagar2010 10:54aa50490b15 230 uint8_t header_packet_id[4] = {p_4,p_3,p_2,p_1};
kidecha_rahul 18:101042d225ef 231 pc.write((uint8_t *)header_packet_id, sizeof(header_packet_id)); // packet ID
kidecha_rahul 18:101042d225ef 232
kidecha_rahul 18:101042d225ef 233
parthsagar2010 16:520034b124b6 234 pc.write((uint8_t *)channel_num, sizeof(channel_num));
kidecha_rahul 18:101042d225ef 235
parthsagar2010 10:54aa50490b15 236 onesec_counter_temp = onesec_counter * 2;
parthsagar2010 10:54aa50490b15 237 data_len_1 = onesec_counter_temp & 0xff;
parthsagar2010 10:54aa50490b15 238 data_len_2 = (onesec_counter_temp >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 239 checksum_ = checksum_ + data_len_1 + data_len_2;
parthsagar2010 10:54aa50490b15 240 //pc.write((uint32_t *)packet_1, sizeof(packet_1));
parthsagar2010 10:54aa50490b15 241 uint8_t header_ecg_datalen[2] = {data_len_2,data_len_1};
parthsagar2010 10:54aa50490b15 242 pc.write((uint8_t *)header_ecg_datalen, sizeof(header_ecg_datalen));
kidecha_rahul 18:101042d225ef 243
parthsagar2010 10:54aa50490b15 244 mod_checksum = checksum_ % 65536 ;
parthsagar2010 10:54aa50490b15 245 cksm_1 = mod_checksum & 0xff;
parthsagar2010 10:54aa50490b15 246 cksm_2 = (mod_checksum >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 247 uint8_t header_ecg_checksum[2] = {cksm_2,cksm_1};
parthsagar2010 10:54aa50490b15 248 pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
parthsagar2010 10:54aa50490b15 249
parthsagar2010 10:54aa50490b15 250 pc.write((int16_t *)ecgSample_1sec,onesec_counter * sizeof(int16_t));
parthsagar2010 15:0356e9454a60 251 // printf("Samples per second %d \n", (onesec_counter));
parthsagar2010 10:54aa50490b15 252 onesec_counter = 0;
parthsagar2010 10:54aa50490b15 253 // memset(ecgSample_1sec, 0, sizeof(ecgSample_1sec));
parthsagar2010 10:54aa50490b15 254
parthsagar2010 10:54aa50490b15 255 pc.write((uint8_t *)ending, sizeof(ending));
parthsagar2010 10:54aa50490b15 256 checksum_ = 0;
parthsagar2010 15:0356e9454a60 257 //t.stop();
parthsagar2010 11:300afaf2696b 258 // auto us = t.elapsed_time().count();
parthsagar2010 15:0356e9454a60 259 // float time_taken = us/1000000;
parthsagar2010 15:0356e9454a60 260 // printf("Timer time: %lu ms \n", (time_taken*100));
parthsagar2010 15:0356e9454a60 261 // t.reset();
parthsagar2010 15:0356e9454a60 262 // timer_fast.reset();
kidecha_rahul 19:7a084dc2f09d 263
kidecha_rahul 23:288c5d1babd1 264
kidecha_rahul 23:288c5d1babd1 265 if (tic==10) //C1
kidecha_rahul 19:7a084dc2f09d 266 {
kidecha_rahul 19:7a084dc2f09d 267 S0=1;
kidecha_rahul 19:7a084dc2f09d 268 S1=0;
kidecha_rahul 23:288c5d1babd1 269 // S2=0;
kidecha_rahul 23:288c5d1babd1 270 // S3=0;
kidecha_rahul 20:2e999e6568c1 271 channel_num[0]= {1};
kidecha_rahul 19:7a084dc2f09d 272 }
kidecha_rahul 23:288c5d1babd1 273 if (tic==20) //C2
kidecha_rahul 19:7a084dc2f09d 274 {
kidecha_rahul 19:7a084dc2f09d 275 S0=0;
kidecha_rahul 19:7a084dc2f09d 276 S1=1;
kidecha_rahul 23:288c5d1babd1 277 // S2=0;
kidecha_rahul 23:288c5d1babd1 278 // S3=0;
kidecha_rahul 20:2e999e6568c1 279 channel_num[0]= {2};
kidecha_rahul 19:7a084dc2f09d 280 }
kidecha_rahul 19:7a084dc2f09d 281
kidecha_rahul 23:288c5d1babd1 282 if (tic==30) // C0
kidecha_rahul 19:7a084dc2f09d 283 {
kidecha_rahul 19:7a084dc2f09d 284 S0=0;
kidecha_rahul 19:7a084dc2f09d 285 S1=0;
kidecha_rahul 23:288c5d1babd1 286 // S2=0;
kidecha_rahul 23:288c5d1babd1 287 // S3=0;
kidecha_rahul 20:2e999e6568c1 288 channel_num[0]= {0};
kidecha_rahul 23:288c5d1babd1 289 tic=0;}
kidecha_rahul 23:288c5d1babd1 290
kidecha_rahul 21:193a10530741 291
kidecha_rahul 23:288c5d1babd1 292 // for channel selection
kidecha_rahul 23:288c5d1babd1 293
kidecha_rahul 24:98332ec40aff 294 /* if (A==0) //
kidecha_rahul 23:288c5d1babd1 295 {tic=50;
kidecha_rahul 22:07eec382c267 296 S0=0;
kidecha_rahul 22:07eec382c267 297 S1=0;
kidecha_rahul 23:288c5d1babd1 298 // S2=0;
kidecha_rahul 23:288c5d1babd1 299 // S3=0;
kidecha_rahul 22:07eec382c267 300 channel_num[0]= {0};}
kidecha_rahul 22:07eec382c267 301
kidecha_rahul 23:288c5d1babd1 302 if (B==0) //
kidecha_rahul 23:288c5d1babd1 303 {tic=60;
kidecha_rahul 21:193a10530741 304 S0=1;
kidecha_rahul 21:193a10530741 305 S1=0;
kidecha_rahul 23:288c5d1babd1 306 // S2=0;
kidecha_rahul 23:288c5d1babd1 307 // S3=0;
kidecha_rahul 22:07eec382c267 308 channel_num[0]= {1};}
kidecha_rahul 22:07eec382c267 309
kidecha_rahul 23:288c5d1babd1 310 if (C==0) //
kidecha_rahul 23:288c5d1babd1 311 {tic=70;
kidecha_rahul 21:193a10530741 312 S0=0;
kidecha_rahul 21:193a10530741 313 S1=1;
kidecha_rahul 23:288c5d1babd1 314 // S2=0;
kidecha_rahul 23:288c5d1babd1 315 // S3=0;
kidecha_rahul 21:193a10530741 316 channel_num[0]= {2};}
kidecha_rahul 24:98332ec40aff 317 */
kidecha_rahul 23:288c5d1babd1 318
kidecha_rahul 23:288c5d1babd1 319
kidecha_rahul 19:7a084dc2f09d 320
parthsagar2010 9:24ecf16eab0f 321 }
coreyharris 4:06e258ff0b97 322 // Read back ECG samples from the FIFO
kidecha_rahul 23:288c5d1babd1 323 else if((ecgFIFOIntFlag==1))// && (timerflag == 0))
parthsagar2010 9:24ecf16eab0f 324 {
coreyharris 2:812d40f1853d 325
coreyharris 5:f8d1f651bef5 326 ecgFIFOIntFlag = 0;
coreyharris 4:06e258ff0b97 327 status = ecgAFE.readRegister( MAX30003::STATUS ); // Read the STATUS register
coreyharris 2:812d40f1853d 328
coreyharris 3:420d5efbd967 329 // Check if EINT interrupt asserted
parthsagar2010 9:24ecf16eab0f 330 if ( ( status & EINT_STATUS_MASK ) == EINT_STATUS_MASK )
parthsagar2010 9:24ecf16eab0f 331 {
coreyharris 3:420d5efbd967 332
coreyharris 4:06e258ff0b97 333 readECGSamples = 0; // Reset sample counter
coreyharris 3:420d5efbd967 334
coreyharris 2:812d40f1853d 335 do {
coreyharris 6:86ac850c718d 336 ecgFIFO = ecgAFE.readRegister( MAX30003::ECG_FIFO ); // Read FIFO
coreyharris 4:06e258ff0b97 337 ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data
parthsagar2010 10:54aa50490b15 338 ecgSample[readECGSamples] = ((ecgSample[readECGSamples]<<8)&0xFF00)|((ecgSample[readECGSamples]>>8)&0x00FF);
coreyharris 6:86ac850c718d 339 ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS_MASK; // Isolate ETAG
coreyharris 4:06e258ff0b97 340 readECGSamples++; // Increment sample counter
coreyharris 3:420d5efbd967 341
coreyharris 3:420d5efbd967 342 // Check that sample is not last sample in FIFO
coreyharris 6:86ac850c718d 343 } while ( ETAG[readECGSamples-1] == FIFO_VALID_SAMPLE_MASK ||
coreyharris 6:86ac850c718d 344 ETAG[readECGSamples-1] == FIFO_FAST_SAMPLE_MASK );
coreyharris 2:812d40f1853d 345
coreyharris 3:420d5efbd967 346 // Check if FIFO has overflowed
parthsagar2010 9:24ecf16eab0f 347 if( ETAG[readECGSamples - 1] == FIFO_OVF_MASK )
parthsagar2010 9:24ecf16eab0f 348 {
coreyharris 3:420d5efbd967 349 ecgAFE.writeRegister( MAX30003::FIFO_RST , 0); // Reset FIFO
johnGreeneMaxim 7:cf0855a0450a 350 rLed = 1;//notifies the user that an over flow occured
coreyharris 3:420d5efbd967 351 }
parthsagar2010 10:54aa50490b15 352 //uint8_t header_ecg_checksum[2] = {'%','%'};
parthsagar2010 10:54aa50490b15 353 //pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
coreyharris 3:420d5efbd967 354
parthsagar2010 10:54aa50490b15 355 //pc.write((int16_t *)ecgSample,readECGSamples * sizeof(int16_t ));
parthsagar2010 10:54aa50490b15 356 //memcpy(ecgSample_1sec , ecgSample, sizeof(ecgSample));
parthsagar2010 10:54aa50490b15 357
parthsagar2010 10:54aa50490b15 358 //memcpy(ecgSample_1sec + (onesec_counter * sizeof(int16_t)), ecgSample, sizeof(ecgSample));
parthsagar2010 15:0356e9454a60 359
parthsagar2010 15:0356e9454a60 360 if (flip)
parthsagar2010 15:0356e9454a60 361 {
parthsagar2010 15:0356e9454a60 362 sampleps = 12;
parthsagar2010 15:0356e9454a60 363 //printf("Flipped 12\r\n");
parthsagar2010 15:0356e9454a60 364 }
parthsagar2010 15:0356e9454a60 365 else
parthsagar2010 15:0356e9454a60 366 {
parthsagar2010 15:0356e9454a60 367 sampleps = 13;
parthsagar2010 15:0356e9454a60 368 // printf("Flipped 13\r\n");
parthsagar2010 15:0356e9454a60 369 }
parthsagar2010 15:0356e9454a60 370
parthsagar2010 15:0356e9454a60 371 for( idx = 0; idx < sampleps; idx++ )
parthsagar2010 9:24ecf16eab0f 372 {
parthsagar2010 9:24ecf16eab0f 373 //pc.printf("%6d\r\n", ecgSample[idx]);
parthsagar2010 9:24ecf16eab0f 374 ecgSample_1sec[onesec_counter] = ecgSample[idx];
parthsagar2010 10:54aa50490b15 375
parthsagar2010 10:54aa50490b15 376 cksm_1 = ecgSample[idx] & 0xff;
parthsagar2010 10:54aa50490b15 377 cksm_2 = (ecgSample[idx] >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 378 checksum_ += cksm_1 + cksm_2;
parthsagar2010 9:24ecf16eab0f 379 onesec_counter++;
coreyharris 6:86ac850c718d 380 }
parthsagar2010 15:0356e9454a60 381 flip =!flip;
parthsagar2010 15:0356e9454a60 382 rLed = ! rLed;
coreyharris 0:38c49bc37c7c 383 }
parthsagar2010 10:54aa50490b15 384
coreyharris 0:38c49bc37c7c 385 }
coreyharris 0:38c49bc37c7c 386 }
coreyharris 0:38c49bc37c7c 387 }
kidecha_rahul 23:288c5d1babd1 388
kidecha_rahul 23:288c5d1babd1 389
kidecha_rahul 23:288c5d1babd1 390
kidecha_rahul 23:288c5d1babd1 391
coreyharris 0:38c49bc37c7c 392 void ecg_config(MAX30003& ecgAFE) {
kidecha_rahul 23:288c5d1babd1 393
coreyharris 1:86843c27cc81 394 // Reset ECG to clear registers
coreyharris 1:86843c27cc81 395 ecgAFE.writeRegister( MAX30003::SW_RST , 0);
coreyharris 0:38c49bc37c7c 396
coreyharris 1:86843c27cc81 397 // General config register setting
coreyharris 1:86843c27cc81 398 MAX30003::GeneralConfiguration_u CNFG_GEN_r;
coreyharris 3:420d5efbd967 399 CNFG_GEN_r.bits.en_ecg = 1; // Enable ECG channel
coreyharris 3:420d5efbd967 400 CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input
coreyharris 3:420d5efbd967 401 CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input
coreyharris 3:420d5efbd967 402 CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias
coreyharris 3:420d5efbd967 403 CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA
coreyharris 3:420d5efbd967 404 CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection
parthsagar2010 12:10b49ad3c492 405 //CNFG_GEN_r.bits.fmstr = 1; //125 sps FMSTR 1
coreyharris 1:86843c27cc81 406 ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all);
coreyharris 1:86843c27cc81 407
coreyharris 1:86843c27cc81 408
coreyharris 1:86843c27cc81 409 // ECG Config register setting
coreyharris 1:86843c27cc81 410 MAX30003::ECGConfiguration_u CNFG_ECG_r;
coreyharris 3:420d5efbd967 411 CNFG_ECG_r.bits.dlpf = 1; // Digital LPF cutoff = 40Hz
coreyharris 3:420d5efbd967 412 CNFG_ECG_r.bits.dhpf = 1; // Digital HPF cutoff = 0.5Hz
coreyharris 3:420d5efbd967 413 CNFG_ECG_r.bits.gain = 3; // ECG gain = 160V/V
kidecha_rahul 23:288c5d1babd1 414 CNFG_ECG_r.bits.rate = 2; // Sample rate = 128 sps
coreyharris 1:86843c27cc81 415 ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all);
coreyharris 1:86843c27cc81 416
coreyharris 1:86843c27cc81 417
coreyharris 1:86843c27cc81 418 //R-to-R configuration
coreyharris 1:86843c27cc81 419 MAX30003::RtoR1Configuration_u CNFG_RTOR_r;
coreyharris 3:420d5efbd967 420 CNFG_RTOR_r.bits.en_rtor = 1; // Enable R-to-R detection
coreyharris 1:86843c27cc81 421 ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all);
coreyharris 1:86843c27cc81 422
coreyharris 1:86843c27cc81 423
coreyharris 1:86843c27cc81 424 //Manage interrupts register setting
coreyharris 1:86843c27cc81 425 MAX30003::ManageInterrupts_u MNG_INT_r;
coreyharris 3:420d5efbd967 426 MNG_INT_r.bits.efit = 0b00011; // Assert EINT w/ 4 unread samples
coreyharris 3:420d5efbd967 427 MNG_INT_r.bits.clr_rrint = 0b01; // Clear R-to-R on RTOR reg. read back
coreyharris 1:86843c27cc81 428 ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all);
coreyharris 0:38c49bc37c7c 429
coreyharris 0:38c49bc37c7c 430
coreyharris 1:86843c27cc81 431 //Enable interrupts register setting
coreyharris 1:86843c27cc81 432 MAX30003::EnableInterrupts_u EN_INT_r;
coreyharris 5:f8d1f651bef5 433 EN_INT_r.all = 0;
coreyharris 3:420d5efbd967 434 EN_INT_r.bits.en_eint = 1; // Enable EINT interrupt
coreyharris 4:06e258ff0b97 435 EN_INT_r.bits.en_rrint = 0; // Disable R-to-R interrupt
coreyharris 3:420d5efbd967 436 EN_INT_r.bits.intb_type = 3; // Open-drain NMOS with internal pullup
coreyharris 1:86843c27cc81 437 ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all);
coreyharris 1:86843c27cc81 438
coreyharris 1:86843c27cc81 439
coreyharris 1:86843c27cc81 440 //Dyanmic modes config
coreyharris 1:86843c27cc81 441 MAX30003::ManageDynamicModes_u MNG_DYN_r;
coreyharris 3:420d5efbd967 442 MNG_DYN_r.bits.fast = 0; // Fast recovery mode disabled
coreyharris 1:86843c27cc81 443 ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all);
coreyharris 5:f8d1f651bef5 444
coreyharris 5:f8d1f651bef5 445 // MUX Config
coreyharris 5:f8d1f651bef5 446 MAX30003::MuxConfiguration_u CNFG_MUX_r;
coreyharris 5:f8d1f651bef5 447 CNFG_MUX_r.bits.openn = 0; // Connect ECGN to AFE channel
coreyharris 5:f8d1f651bef5 448 CNFG_MUX_r.bits.openp = 0; // Connect ECGP to AFE channel
coreyharris 5:f8d1f651bef5 449 ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all);
coreyharris 1:86843c27cc81 450
coreyharris 1:86843c27cc81 451 return;
coreyharris 0:38c49bc37c7c 452 }
kidecha_rahul 23:288c5d1babd1 453