MH / Mbed OS MAX3000_Beta_July_first_demo

Working

Dependencies:   MAX30003 max32630fthr

main.cpp@22:07eec382c267, 2021-07-02 (annotated)

Committer:
kidecha_rahul
Date:
Fri Jul 02 16:22:17 2021 +0000
Revision:
22:07eec382c267
Parent:
21:193a10530741 
working july1 demo;

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
kidecha_rahul 22:07eec382c267 21 //void task_fast(void);
kidecha_rahul 18:101042d225ef 22 //DigitalOut ledA(LED2);
parthsagar2010 13:0e7bbc06083f 23
kidecha_rahul 19:7a084dc2f09d 24 //DigitalOut EN(P1_7);
kidecha_rahul 19:7a084dc2f09d 25 //DigitalOut A0(P1_4);
kidecha_rahul 19:7a084dc2f09d 26 //DigitalOut A1(P7_2);
kidecha_rahul 19:7a084dc2f09d 27
kidecha_rahul 22:07eec382c267 28 // mux controller pins
kidecha_rahul 19:7a084dc2f09d 29 DigitalOut S0(P5_6);
kidecha_rahul 19:7a084dc2f09d 30 DigitalOut S1(P5_5);
kidecha_rahul 19:7a084dc2f09d 31 DigitalOut S2(P3_3);
kidecha_rahul 19:7a084dc2f09d 32 DigitalOut S3(P3_2);
kidecha_rahul 19:7a084dc2f09d 33
kidecha_rahul 22:07eec382c267 34 //channel feedback
kidecha_rahul 22:07eec382c267 35 DigitalIn A(P5_7); //P17
kidecha_rahul 22:07eec382c267 36 DigitalIn B(P6_0); //P18
kidecha_rahul 22:07eec382c267 37 DigitalIn C(P4_0); //P19
kidecha_rahul 21:193a10530741 38
kidecha_rahul 19:7a084dc2f09d 39
parthsagar2010 16:520034b124b6 40
coreyharris 0:38c49bc37c7c 41 void ecg_config(MAX30003 &ecgAFE);
parthsagar2010 11:300afaf2696b 42 //BufferedSerial pc(P3_1,P3_0); // Use USB debug probe for serial link static Unbuffered
parthsagar2010 15:0356e9454a60 43 static BufferedSerial pc(TARGET_TX_PIN, TARGET_RX_PIN, 230400); // 230400 works well
parthsagar2010 11:300afaf2696b 44
parthsagar2010 10:54aa50490b15 45 //Serial uart_1(USBTX, USBRX); // Use USB debug probe for serial link static Unbuffered
parthsagar2010 10:54aa50490b15 46 //
parthsagar2010 10:54aa50490b15 47 //Serial pc(P3_1,P3_0);
coreyharris 0:38c49bc37c7c 48 volatile bool ecgFIFOIntFlag = 0;
kidecha_rahul 22:07eec382c267 49 //volatile bool timerflag = 0;
parthsagar2010 11:300afaf2696b 50
parthsagar2010 11:300afaf2696b 51 FileHandle *mbed::mbed_override_console(int fd)
parthsagar2010 11:300afaf2696b 52 {
parthsagar2010 11:300afaf2696b 53 return &pc;
parthsagar2010 11:300afaf2696b 54 }
parthsagar2010 11:300afaf2696b 55
parthsagar2010 8:6b9359f81cc0 56 void ecgFIFO_callback_1() { // Triggered when the ECG FIFO is about to be full
coreyharris 0:38c49bc37c7c 57
coreyharris 0:38c49bc37c7c 58 ecgFIFOIntFlag = 1;
coreyharris 0:38c49bc37c7c 59 }
coreyharris 0:38c49bc37c7c 60
kidecha_rahul 21:193a10530741 61
parthsagar2010 11:300afaf2696b 62 int main(void)
coreyharris 3:420d5efbd967 63 {
parthsagar2010 16:520034b124b6 64 int t=0;
kidecha_rahul 21:193a10530741 65
kidecha_rahul 19:7a084dc2f09d 66
kidecha_rahul 19:7a084dc2f09d 67 S0=0;
kidecha_rahul 19:7a084dc2f09d 68 S1=0;
kidecha_rahul 19:7a084dc2f09d 69 S2=0;
kidecha_rahul 19:7a084dc2f09d 70 S3=0;
parthsagar2010 16:520034b124b6 71
parthsagar2010 16:520034b124b6 72
kidecha_rahul 19:7a084dc2f09d 73
parthsagar2010 11:300afaf2696b 74 // Constants
coreyharris 4:06e258ff0b97 75 const int EINT_STATUS_MASK = 1 << 23;
coreyharris 6:86ac850c718d 76 const int FIFO_OVF_MASK = 0x7;
coreyharris 6:86ac850c718d 77 const int FIFO_VALID_SAMPLE_MASK = 0x0;
coreyharris 6:86ac850c718d 78 const int FIFO_FAST_SAMPLE_MASK = 0x1;
coreyharris 6:86ac850c718d 79 const int ETAG_BITS_MASK = 0x7;
kidecha_rahul 17:f0008ebb1040 80
kidecha_rahul 17:f0008ebb1040 81 //-------------------------------------------------------------RTC-------------------------------------------------------------//
kidecha_rahul 17:f0008ebb1040 82 //instantiate rtc object
kidecha_rahul 17:f0008ebb1040 83 Ds3231 rtc(SDA, SCL);
kidecha_rahul 17:f0008ebb1040 84
kidecha_rahul 17:f0008ebb1040 85 uint16_t rtn_val;
kidecha_rahul 17:f0008ebb1040 86
kidecha_rahul 17:f0008ebb1040 87 //time = 12:00:00 AM 12hr mode
kidecha_rahul 22:07eec382c267 88 ds3231_time_t time = {50,30,11,1,0}; //seconds, min, hours, am_pm, mode
kidecha_rahul 17:f0008ebb1040 89
kidecha_rahul 17:f0008ebb1040 90
kidecha_rahul 17:f0008ebb1040 91 rtn_val = rtc.set_time(time);
kidecha_rahul 17:f0008ebb1040 92
kidecha_rahul 17:f0008ebb1040 93
kidecha_rahul 17:f0008ebb1040 94 //see datasheet for calendar format
kidecha_rahul 22:07eec382c267 95 ds3231_calendar_t calendar = {6,2,7,21}; //day date month year
kidecha_rahul 17:f0008ebb1040 96
kidecha_rahul 17:f0008ebb1040 97
kidecha_rahul 17:f0008ebb1040 98 rtn_val = rtc.set_calendar(calendar);
kidecha_rahul 17:f0008ebb1040 99
kidecha_rahul 17:f0008ebb1040 100
kidecha_rahul 17:f0008ebb1040 101 //see datasheet for calendar format
kidecha_rahul 17:f0008ebb1040 102
kidecha_rahul 17:f0008ebb1040 103 ds3231_cntl_stat_t data = {0x1C, 0x08};
kidecha_rahul 17:f0008ebb1040 104
kidecha_rahul 17:f0008ebb1040 105 rtn_val = rtc.set_cntl_stat_reg(data);
kidecha_rahul 17:f0008ebb1040 106 //------------------------------------------------------------------------------------------------------------------------------//
kidecha_rahul 17:f0008ebb1040 107
kidecha_rahul 17:f0008ebb1040 108
kidecha_rahul 22:07eec382c267 109 //timer_fast.start();
parthsagar2010 15:0356e9454a60 110 DigitalOut rLed(LED2, LED_ON);
parthsagar2010 10:54aa50490b15 111 // pc.baud(9600);
coreyharris 3:420d5efbd967 112
parthsagar2010 11:300afaf2696b 113 //pc.set_baud(115200); // Baud rate = 115200
parthsagar2010 11:300afaf2696b 114 //pc.set_format(
parthsagar2010 11:300afaf2696b 115 // /* bits */ 8,
parthsagar2010 11:300afaf2696b 116 // /* parity */ BufferedSerial::None,
parthsagar2010 11:300afaf2696b 117 // /* stop bit */ 1 //1
parthsagar2010 11:300afaf2696b 118 //);
parthsagar2010 10:54aa50490b15 119 //uart_1.baud(115200);
coreyharris 1:86843c27cc81 120 InterruptIn ecgFIFO_int(P5_4); // Config P5_4 as int. in for the
parthsagar2010 8:6b9359f81cc0 121 ecgFIFO_int.fall(&ecgFIFO_callback_1); // ecg FIFO interrupt at falling edge
coreyharris 0:38c49bc37c7c 122
coreyharris 1:86843c27cc81 123 SPI spiBus(SPI2_MOSI, SPI2_MISO, SPI2_SCK); // SPI bus, P5_1 = MOSI,
coreyharris 1:86843c27cc81 124 // P5_2 = MISO, P5_0 = SCK
parthsagar2010 10:54aa50490b15 125
coreyharris 4:06e258ff0b97 126 MAX30003 ecgAFE(spiBus, P5_3); // New MAX30003 on spiBus, CS = P5_3
parthsagar2010 8:6b9359f81cc0 127
coreyharris 4:06e258ff0b97 128 ecg_config(ecgAFE); // Config ECG
parthsagar2010 12:10b49ad3c492 129
coreyharris 0:38c49bc37c7c 130
coreyharris 4:06e258ff0b97 131 ecgAFE.writeRegister( MAX30003::SYNCH , 0);
coreyharris 0:38c49bc37c7c 132
coreyharris 4:06e258ff0b97 133 uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status;
coreyharris 1:86843c27cc81 134 int16_t ecgSample[32];
parthsagar2010 9:24ecf16eab0f 135 //bool timerflag = false;
kidecha_rahul 22:07eec382c267 136 int16_t ecgSample_1sec[125];
parthsagar2010 10:54aa50490b15 137 uint8_t ecg_1 = 0;
parthsagar2010 10:54aa50490b15 138 uint8_t ecg_2 = 0;
parthsagar2010 10:54aa50490b15 139 uint16_t onesec_counter = 0;
parthsagar2010 10:54aa50490b15 140 uint16_t onesec_counter_temp = 0;
parthsagar2010 10:54aa50490b15 141
kidecha_rahul 22:07eec382c267 142 // int16_t sample = 300;
kidecha_rahul 22:07eec382c267 143 // uint8_t final[10];
parthsagar2010 12:10b49ad3c492 144
parthsagar2010 10:54aa50490b15 145 uint16_t checksum_ = 0;
parthsagar2010 10:54aa50490b15 146 uint16_t mod_checksum = 0;
parthsagar2010 10:54aa50490b15 147
parthsagar2010 10:54aa50490b15 148 uint8_t p_1 = 0;
parthsagar2010 10:54aa50490b15 149 uint8_t p_2 = 0;
parthsagar2010 10:54aa50490b15 150 uint8_t p_3 = 0;
parthsagar2010 10:54aa50490b15 151 uint8_t p_4 = 0;
kidecha_rahul 18:101042d225ef 152 // uint8_t channel_num= 1;
kidecha_rahul 20:2e999e6568c1 153 uint8_t channel_num[1]= {0};
parthsagar2010 10:54aa50490b15 154 uint8_t data_len_1 = 0;
parthsagar2010 10:54aa50490b15 155 uint8_t data_len_2 = 0;
parthsagar2010 12:10b49ad3c492 156 uint32_t packet_1 = 0;
parthsagar2010 10:54aa50490b15 157 uint8_t cksm_1 = 0;
parthsagar2010 10:54aa50490b15 158 uint8_t cksm_2 = 0;
parthsagar2010 10:54aa50490b15 159 uint8_t header_device_id[3] = {0,0,210};
kidecha_rahul 19:7a084dc2f09d 160 // uint8_t header_device_id[3] = {0,0,1}; //for rahul
parthsagar2010 10:54aa50490b15 161 uint8_t header_packet_type[2] = {0,2};
parthsagar2010 10:54aa50490b15 162
parthsagar2010 10:54aa50490b15 163 uint8_t ending[5] = {'@','#','%','!','7'};
parthsagar2010 10:54aa50490b15 164
parthsagar2010 15:0356e9454a60 165 bool flip = true;
kidecha_rahul 22:07eec382c267 166 uint8_t sampleps = 0;
parthsagar2010 15:0356e9454a60 167
parthsagar2010 16:520034b124b6 168 char buf[20];//={"1622326341"};
parthsagar2010 15:0356e9454a60 169 // pc.write("Welcome",8*sizeof(char));
parthsagar2010 15:0356e9454a60 170 // printf("In the main loop"); //printf("In the main loop");
parthsagar2010 11:300afaf2696b 171 bool flag_first = false;
parthsagar2010 15:0356e9454a60 172 bool timestamp_reader = false;
kidecha_rahul 17:f0008ebb1040 173
kidecha_rahul 17:f0008ebb1040 174
kidecha_rahul 19:7a084dc2f09d 175 //---------------------------------hardware RTC check---------------------------------------------//
kidecha_rahul 17:f0008ebb1040 176 time_t epoch_time;
kidecha_rahul 17:f0008ebb1040 177
kidecha_rahul 17:f0008ebb1040 178 do {
kidecha_rahul 17:f0008ebb1040 179 rtc.get_time(&time);
kidecha_rahul 17:f0008ebb1040 180 rtc.get_calendar(&calendar);
kidecha_rahul 17:f0008ebb1040 181 epoch_time = rtc.get_epoch();
kidecha_rahul 17:f0008ebb1040 182 //printf("seconds since the Epoch: %ld\n", epoch_time);
parthsagar2010 12:10b49ad3c492 183
kidecha_rahul 17:f0008ebb1040 184 packet_1 = epoch_time;
kidecha_rahul 17:f0008ebb1040 185 }while((epoch_time % 60)!=0); // come out at the start of minute
kidecha_rahul 19:7a084dc2f09d 186
kidecha_rahul 19:7a084dc2f09d 187
kidecha_rahul 17:f0008ebb1040 188
parthsagar2010 16:520034b124b6 189 while(1)
parthsagar2010 9:24ecf16eab0f 190 {
kidecha_rahul 19:7a084dc2f09d 191
parthsagar2010 15:0356e9454a60 192 if ((onesec_counter>=125))
kidecha_rahul 19:7a084dc2f09d 193 { t++;
parthsagar2010 11:300afaf2696b 194 //t.start();
parthsagar2010 10:54aa50490b15 195 //ledA = !ledA;
kidecha_rahul 18:101042d225ef 196 pc.write((uint8_t *)header_device_id, sizeof(header_device_id)); // device ID
parthsagar2010 10:54aa50490b15 197
kidecha_rahul 18:101042d225ef 198 pc.write((uint8_t *)header_packet_type, sizeof(header_packet_type)); // packet type
kidecha_rahul 18:101042d225ef 199
kidecha_rahul 17:f0008ebb1040 200 epoch_time = rtc.get_epoch();
kidecha_rahul 17:f0008ebb1040 201 //time_t seconds = time(NULL); // if remove it the timestamp will be static
kidecha_rahul 17:f0008ebb1040 202 packet_1 = epoch_time; //
parthsagar2010 12:10b49ad3c492 203 //packet_1 ++;
parthsagar2010 15:0356e9454a60 204 // printf("Time as seconds since January 1, 1970 = %d\n", packet_1);
parthsagar2010 10:54aa50490b15 205 p_1 = packet_1 & 0xff;
parthsagar2010 10:54aa50490b15 206 p_2 = (packet_1 >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 207 p_3 = (packet_1 >> 16) & 0xff;
parthsagar2010 10:54aa50490b15 208 p_4 = (packet_1 >> 24) & 0xff;
parthsagar2010 10:54aa50490b15 209 // checksum_ = checksum_ + (packet_1 & 0xffff) + ((packet_1 >> 16) & 0xffff) ;
parthsagar2010 10:54aa50490b15 210 checksum_ = checksum_ + p_1 + p_2 + p_3 + p_4 ;
parthsagar2010 10:54aa50490b15 211 uint8_t header_packet_id[4] = {p_4,p_3,p_2,p_1};
kidecha_rahul 18:101042d225ef 212 pc.write((uint8_t *)header_packet_id, sizeof(header_packet_id)); // packet ID
kidecha_rahul 18:101042d225ef 213
kidecha_rahul 18:101042d225ef 214
parthsagar2010 16:520034b124b6 215 pc.write((uint8_t *)channel_num, sizeof(channel_num));
kidecha_rahul 18:101042d225ef 216
parthsagar2010 10:54aa50490b15 217 onesec_counter_temp = onesec_counter * 2;
parthsagar2010 10:54aa50490b15 218 data_len_1 = onesec_counter_temp & 0xff;
parthsagar2010 10:54aa50490b15 219 data_len_2 = (onesec_counter_temp >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 220 checksum_ = checksum_ + data_len_1 + data_len_2;
parthsagar2010 10:54aa50490b15 221 //pc.write((uint32_t *)packet_1, sizeof(packet_1));
parthsagar2010 10:54aa50490b15 222 uint8_t header_ecg_datalen[2] = {data_len_2,data_len_1};
parthsagar2010 10:54aa50490b15 223 pc.write((uint8_t *)header_ecg_datalen, sizeof(header_ecg_datalen));
kidecha_rahul 18:101042d225ef 224
parthsagar2010 10:54aa50490b15 225 mod_checksum = checksum_ % 65536 ;
parthsagar2010 10:54aa50490b15 226 cksm_1 = mod_checksum & 0xff;
parthsagar2010 10:54aa50490b15 227 cksm_2 = (mod_checksum >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 228 uint8_t header_ecg_checksum[2] = {cksm_2,cksm_1};
parthsagar2010 10:54aa50490b15 229 pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
parthsagar2010 10:54aa50490b15 230
parthsagar2010 10:54aa50490b15 231 pc.write((int16_t *)ecgSample_1sec,onesec_counter * sizeof(int16_t));
parthsagar2010 15:0356e9454a60 232 // printf("Samples per second %d \n", (onesec_counter));
parthsagar2010 10:54aa50490b15 233 onesec_counter = 0;
parthsagar2010 10:54aa50490b15 234 // memset(ecgSample_1sec, 0, sizeof(ecgSample_1sec));
parthsagar2010 10:54aa50490b15 235
parthsagar2010 10:54aa50490b15 236 pc.write((uint8_t *)ending, sizeof(ending));
parthsagar2010 10:54aa50490b15 237 checksum_ = 0;
parthsagar2010 15:0356e9454a60 238 //t.stop();
parthsagar2010 11:300afaf2696b 239 // auto us = t.elapsed_time().count();
parthsagar2010 15:0356e9454a60 240 // float time_taken = us/1000000;
parthsagar2010 15:0356e9454a60 241 // printf("Timer time: %lu ms \n", (time_taken*100));
parthsagar2010 15:0356e9454a60 242 // t.reset();
parthsagar2010 15:0356e9454a60 243 // timer_fast.reset();
kidecha_rahul 19:7a084dc2f09d 244
kidecha_rahul 19:7a084dc2f09d 245 if (t==10) //C1
kidecha_rahul 19:7a084dc2f09d 246 {
kidecha_rahul 19:7a084dc2f09d 247 S0=1;
kidecha_rahul 19:7a084dc2f09d 248 S1=0;
kidecha_rahul 19:7a084dc2f09d 249 S2=0;
kidecha_rahul 19:7a084dc2f09d 250 S3=0;
kidecha_rahul 20:2e999e6568c1 251 channel_num[0]= {1};
kidecha_rahul 19:7a084dc2f09d 252 }
kidecha_rahul 19:7a084dc2f09d 253 if (t==20) //C2
kidecha_rahul 19:7a084dc2f09d 254 {
kidecha_rahul 19:7a084dc2f09d 255 S0=0;
kidecha_rahul 19:7a084dc2f09d 256 S1=1;
kidecha_rahul 19:7a084dc2f09d 257 S2=0;
kidecha_rahul 19:7a084dc2f09d 258 S3=0;
kidecha_rahul 20:2e999e6568c1 259 channel_num[0]= {2};
kidecha_rahul 19:7a084dc2f09d 260 }
kidecha_rahul 19:7a084dc2f09d 261
kidecha_rahul 19:7a084dc2f09d 262 if (t==30) // C0
kidecha_rahul 19:7a084dc2f09d 263 {
kidecha_rahul 19:7a084dc2f09d 264 S0=0;
kidecha_rahul 19:7a084dc2f09d 265 S1=0;
kidecha_rahul 19:7a084dc2f09d 266 S2=0;
kidecha_rahul 19:7a084dc2f09d 267 S3=0;
kidecha_rahul 20:2e999e6568c1 268 channel_num[0]= {0};
kidecha_rahul 19:7a084dc2f09d 269 t=0;}
kidecha_rahul 21:193a10530741 270
kidecha_rahul 22:07eec382c267 271 if (A==0) //5_7 = P17
kidecha_rahul 22:07eec382c267 272 {//t=50;
kidecha_rahul 22:07eec382c267 273 S0=0;
kidecha_rahul 22:07eec382c267 274 S1=0;
kidecha_rahul 22:07eec382c267 275 S2=0;
kidecha_rahul 22:07eec382c267 276 S3=0;
kidecha_rahul 22:07eec382c267 277 channel_num[0]= {0};}
kidecha_rahul 22:07eec382c267 278
kidecha_rahul 22:07eec382c267 279 if (B==0) // 6_0 = P18
kidecha_rahul 22:07eec382c267 280 {
kidecha_rahul 21:193a10530741 281 S0=1;
kidecha_rahul 21:193a10530741 282 S1=0;
kidecha_rahul 21:193a10530741 283 S2=0;
kidecha_rahul 21:193a10530741 284 S3=0;
kidecha_rahul 22:07eec382c267 285 channel_num[0]= {1};}
kidecha_rahul 22:07eec382c267 286
kidecha_rahul 22:07eec382c267 287 if (C==0) // 4_0 = P19
kidecha_rahul 22:07eec382c267 288 {
kidecha_rahul 21:193a10530741 289 S0=0;
kidecha_rahul 21:193a10530741 290 S1=1;
kidecha_rahul 21:193a10530741 291 S2=0;
kidecha_rahul 21:193a10530741 292 S3=0;
kidecha_rahul 21:193a10530741 293 channel_num[0]= {2};}
kidecha_rahul 19:7a084dc2f09d 294
parthsagar2010 9:24ecf16eab0f 295 }
coreyharris 4:06e258ff0b97 296 // Read back ECG samples from the FIFO
kidecha_rahul 20:2e999e6568c1 297 else if(ecgFIFOIntFlag==1)// && (timerflag == 0))
parthsagar2010 9:24ecf16eab0f 298 {
coreyharris 2:812d40f1853d 299
coreyharris 5:f8d1f651bef5 300 ecgFIFOIntFlag = 0;
coreyharris 4:06e258ff0b97 301 status = ecgAFE.readRegister( MAX30003::STATUS ); // Read the STATUS register
coreyharris 2:812d40f1853d 302
coreyharris 3:420d5efbd967 303 // Check if EINT interrupt asserted
parthsagar2010 9:24ecf16eab0f 304 if ( ( status & EINT_STATUS_MASK ) == EINT_STATUS_MASK )
parthsagar2010 9:24ecf16eab0f 305 {
coreyharris 3:420d5efbd967 306
coreyharris 4:06e258ff0b97 307 readECGSamples = 0; // Reset sample counter
coreyharris 3:420d5efbd967 308
coreyharris 2:812d40f1853d 309 do {
coreyharris 6:86ac850c718d 310 ecgFIFO = ecgAFE.readRegister( MAX30003::ECG_FIFO ); // Read FIFO
coreyharris 4:06e258ff0b97 311 ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data
parthsagar2010 10:54aa50490b15 312 ecgSample[readECGSamples] = ((ecgSample[readECGSamples]<<8)&0xFF00)|((ecgSample[readECGSamples]>>8)&0x00FF);
coreyharris 6:86ac850c718d 313 ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS_MASK; // Isolate ETAG
coreyharris 4:06e258ff0b97 314 readECGSamples++; // Increment sample counter
coreyharris 3:420d5efbd967 315
coreyharris 3:420d5efbd967 316 // Check that sample is not last sample in FIFO
coreyharris 6:86ac850c718d 317 } while ( ETAG[readECGSamples-1] == FIFO_VALID_SAMPLE_MASK ||
coreyharris 6:86ac850c718d 318 ETAG[readECGSamples-1] == FIFO_FAST_SAMPLE_MASK );
coreyharris 2:812d40f1853d 319
coreyharris 3:420d5efbd967 320 // Check if FIFO has overflowed
parthsagar2010 9:24ecf16eab0f 321 if( ETAG[readECGSamples - 1] == FIFO_OVF_MASK )
parthsagar2010 9:24ecf16eab0f 322 {
coreyharris 3:420d5efbd967 323 ecgAFE.writeRegister( MAX30003::FIFO_RST , 0); // Reset FIFO
johnGreeneMaxim 7:cf0855a0450a 324 rLed = 1;//notifies the user that an over flow occured
coreyharris 3:420d5efbd967 325 }
parthsagar2010 10:54aa50490b15 326 //uint8_t header_ecg_checksum[2] = {'%','%'};
parthsagar2010 10:54aa50490b15 327 //pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
coreyharris 3:420d5efbd967 328
parthsagar2010 10:54aa50490b15 329 //pc.write((int16_t *)ecgSample,readECGSamples * sizeof(int16_t ));
parthsagar2010 10:54aa50490b15 330 //memcpy(ecgSample_1sec , ecgSample, sizeof(ecgSample));
parthsagar2010 10:54aa50490b15 331
parthsagar2010 10:54aa50490b15 332 //memcpy(ecgSample_1sec + (onesec_counter * sizeof(int16_t)), ecgSample, sizeof(ecgSample));
parthsagar2010 15:0356e9454a60 333
parthsagar2010 15:0356e9454a60 334 if (flip)
parthsagar2010 15:0356e9454a60 335 {
parthsagar2010 15:0356e9454a60 336 sampleps = 12;
parthsagar2010 15:0356e9454a60 337 //printf("Flipped 12\r\n");
parthsagar2010 15:0356e9454a60 338 }
parthsagar2010 15:0356e9454a60 339 else
parthsagar2010 15:0356e9454a60 340 {
parthsagar2010 15:0356e9454a60 341 sampleps = 13;
parthsagar2010 15:0356e9454a60 342 // printf("Flipped 13\r\n");
parthsagar2010 15:0356e9454a60 343 }
parthsagar2010 15:0356e9454a60 344
parthsagar2010 15:0356e9454a60 345 for( idx = 0; idx < sampleps; idx++ )
parthsagar2010 9:24ecf16eab0f 346 {
parthsagar2010 9:24ecf16eab0f 347 //pc.printf("%6d\r\n", ecgSample[idx]);
parthsagar2010 9:24ecf16eab0f 348 ecgSample_1sec[onesec_counter] = ecgSample[idx];
parthsagar2010 10:54aa50490b15 349
parthsagar2010 10:54aa50490b15 350 cksm_1 = ecgSample[idx] & 0xff;
parthsagar2010 10:54aa50490b15 351 cksm_2 = (ecgSample[idx] >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 352 checksum_ += cksm_1 + cksm_2;
parthsagar2010 9:24ecf16eab0f 353 onesec_counter++;
coreyharris 6:86ac850c718d 354 }
parthsagar2010 15:0356e9454a60 355 flip =!flip;
parthsagar2010 15:0356e9454a60 356 rLed = ! rLed;
coreyharris 0:38c49bc37c7c 357 }
parthsagar2010 10:54aa50490b15 358
coreyharris 0:38c49bc37c7c 359 }
coreyharris 0:38c49bc37c7c 360 }
coreyharris 0:38c49bc37c7c 361 }
coreyharris 0:38c49bc37c7c 362
coreyharris 0:38c49bc37c7c 363
coreyharris 0:38c49bc37c7c 364
coreyharris 0:38c49bc37c7c 365
coreyharris 0:38c49bc37c7c 366 void ecg_config(MAX30003& ecgAFE) {
coreyharris 0:38c49bc37c7c 367
coreyharris 1:86843c27cc81 368 // Reset ECG to clear registers
coreyharris 1:86843c27cc81 369 ecgAFE.writeRegister( MAX30003::SW_RST , 0);
coreyharris 0:38c49bc37c7c 370
coreyharris 1:86843c27cc81 371 // General config register setting
coreyharris 1:86843c27cc81 372 MAX30003::GeneralConfiguration_u CNFG_GEN_r;
coreyharris 3:420d5efbd967 373 CNFG_GEN_r.bits.en_ecg = 1; // Enable ECG channel
kidecha_rahul 21:193a10530741 374 CNFG_GEN_r.bits.fmstr = 1; // set frequency to 32000kHz
coreyharris 3:420d5efbd967 375 CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input
coreyharris 3:420d5efbd967 376 CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input
coreyharris 3:420d5efbd967 377 CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias
coreyharris 3:420d5efbd967 378 CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA
coreyharris 3:420d5efbd967 379 CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection
parthsagar2010 12:10b49ad3c492 380 //CNFG_GEN_r.bits.fmstr = 1; //125 sps FMSTR 1
coreyharris 1:86843c27cc81 381 ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all);
coreyharris 1:86843c27cc81 382
coreyharris 1:86843c27cc81 383
coreyharris 1:86843c27cc81 384 // ECG Config register setting
coreyharris 1:86843c27cc81 385 MAX30003::ECGConfiguration_u CNFG_ECG_r;
coreyharris 3:420d5efbd967 386 CNFG_ECG_r.bits.dlpf = 1; // Digital LPF cutoff = 40Hz
coreyharris 3:420d5efbd967 387 CNFG_ECG_r.bits.dhpf = 1; // Digital HPF cutoff = 0.5Hz
coreyharris 3:420d5efbd967 388 CNFG_ECG_r.bits.gain = 3; // ECG gain = 160V/V
kidecha_rahul 21:193a10530741 389 CNFG_ECG_r.bits.rate = 2; // Sample rate = 125 sps
coreyharris 1:86843c27cc81 390 ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all);
coreyharris 1:86843c27cc81 391
coreyharris 1:86843c27cc81 392
coreyharris 1:86843c27cc81 393 //R-to-R configuration
coreyharris 1:86843c27cc81 394 MAX30003::RtoR1Configuration_u CNFG_RTOR_r;
coreyharris 3:420d5efbd967 395 CNFG_RTOR_r.bits.en_rtor = 1; // Enable R-to-R detection
coreyharris 1:86843c27cc81 396 ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all);
coreyharris 1:86843c27cc81 397
coreyharris 1:86843c27cc81 398
coreyharris 1:86843c27cc81 399 //Manage interrupts register setting
coreyharris 1:86843c27cc81 400 MAX30003::ManageInterrupts_u MNG_INT_r;
coreyharris 3:420d5efbd967 401 MNG_INT_r.bits.efit = 0b00011; // Assert EINT w/ 4 unread samples
coreyharris 3:420d5efbd967 402 MNG_INT_r.bits.clr_rrint = 0b01; // Clear R-to-R on RTOR reg. read back
coreyharris 1:86843c27cc81 403 ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all);
coreyharris 0:38c49bc37c7c 404
coreyharris 0:38c49bc37c7c 405
coreyharris 1:86843c27cc81 406 //Enable interrupts register setting
coreyharris 1:86843c27cc81 407 MAX30003::EnableInterrupts_u EN_INT_r;
coreyharris 5:f8d1f651bef5 408 EN_INT_r.all = 0;
coreyharris 3:420d5efbd967 409 EN_INT_r.bits.en_eint = 1; // Enable EINT interrupt
coreyharris 4:06e258ff0b97 410 EN_INT_r.bits.en_rrint = 0; // Disable R-to-R interrupt
coreyharris 3:420d5efbd967 411 EN_INT_r.bits.intb_type = 3; // Open-drain NMOS with internal pullup
coreyharris 1:86843c27cc81 412 ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all);
coreyharris 1:86843c27cc81 413
coreyharris 1:86843c27cc81 414
coreyharris 1:86843c27cc81 415 //Dyanmic modes config
coreyharris 1:86843c27cc81 416 MAX30003::ManageDynamicModes_u MNG_DYN_r;
coreyharris 3:420d5efbd967 417 MNG_DYN_r.bits.fast = 0; // Fast recovery mode disabled
coreyharris 1:86843c27cc81 418 ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all);
coreyharris 5:f8d1f651bef5 419
coreyharris 5:f8d1f651bef5 420 // MUX Config
coreyharris 5:f8d1f651bef5 421 MAX30003::MuxConfiguration_u CNFG_MUX_r;
coreyharris 5:f8d1f651bef5 422 CNFG_MUX_r.bits.openn = 0; // Connect ECGN to AFE channel
coreyharris 5:f8d1f651bef5 423 CNFG_MUX_r.bits.openp = 0; // Connect ECGP to AFE channel
coreyharris 5:f8d1f651bef5 424 ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all);
coreyharris 1:86843c27cc81 425
coreyharris 1:86843c27cc81 426 return;
coreyharris 0:38c49bc37c7c 427 }
coreyharris 0:38c49bc37c7c 428