MH / Mbed OS MAX30003WING_monitorhealth_customboard_L

final

Dependencies:   MAX30003 max32630fthr DS1307

main.cpp@21:193a10530741, 2021-06-29 (annotated)

Committer:
kidecha_rahul
Date:
Tue Jun 29 16:16:56 2021 +0000
Revision:
21:193a10530741
Parent:
20:2e999e6568c1
Child:
22:07eec382c267
gpios_test629

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"
parthsagar2010 9:24ecf16eab0f 5 #include "ds1307.h"
parthsagar2010 11:300afaf2696b 6 //#include <BufferedSerial.h>
parthsagar2010 10:54aa50490b15 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
parthsagar2010 9:24ecf16eab0f 17 Timer timer_fast;
parthsagar2010 10:54aa50490b15 18 Timer t;
coreyharris 0:38c49bc37c7c 19 MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
coreyharris 0:38c49bc37c7c 20
parthsagar2010 9:24ecf16eab0f 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 19:7a084dc2f09d 28
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 21:193a10530741 34 DigitalIn AB(P5_7);
kidecha_rahul 21:193a10530741 35 DigitalIn AC(P6_0);
kidecha_rahul 21:193a10530741 36
kidecha_rahul 21:193a10530741 37
kidecha_rahul 19:7a084dc2f09d 38
parthsagar2010 16:520034b124b6 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
parthsagar2010 11:300afaf2696b 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;
parthsagar2010 9:24ecf16eab0f 48 volatile bool timerflag = 0;
parthsagar2010 11:300afaf2696b 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 }
parthsagar2010 11:300afaf2696b 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 }
coreyharris 0:38c49bc37c7c 59
kidecha_rahul 21:193a10530741 60
parthsagar2010 11:300afaf2696b 61 int main(void)
coreyharris 3:420d5efbd967 62 {
parthsagar2010 16:520034b124b6 63 int t=0;
kidecha_rahul 21:193a10530741 64
kidecha_rahul 19:7a084dc2f09d 65
kidecha_rahul 19:7a084dc2f09d 66 S0=0;
kidecha_rahul 19:7a084dc2f09d 67 S1=0;
kidecha_rahul 19:7a084dc2f09d 68 S2=0;
kidecha_rahul 19:7a084dc2f09d 69 S3=0;
parthsagar2010 16:520034b124b6 70
parthsagar2010 16:520034b124b6 71
kidecha_rahul 19:7a084dc2f09d 72
parthsagar2010 11:300afaf2696b 73 // Constants
coreyharris 4:06e258ff0b97 74 const int EINT_STATUS_MASK = 1 << 23;
coreyharris 6:86ac850c718d 75 const int FIFO_OVF_MASK = 0x7;
coreyharris 6:86ac850c718d 76 const int FIFO_VALID_SAMPLE_MASK = 0x0;
coreyharris 6:86ac850c718d 77 const int FIFO_FAST_SAMPLE_MASK = 0x1;
coreyharris 6:86ac850c718d 78 const int ETAG_BITS_MASK = 0x7;
kidecha_rahul 17:f0008ebb1040 79
kidecha_rahul 17:f0008ebb1040 80 //-------------------------------------------------------------RTC-------------------------------------------------------------//
kidecha_rahul 17:f0008ebb1040 81 //instantiate rtc object
kidecha_rahul 17:f0008ebb1040 82 Ds3231 rtc(SDA, SCL);
kidecha_rahul 17:f0008ebb1040 83
kidecha_rahul 17:f0008ebb1040 84 uint16_t rtn_val;
kidecha_rahul 17:f0008ebb1040 85
kidecha_rahul 17:f0008ebb1040 86 //time = 12:00:00 AM 12hr mode
kidecha_rahul 21:193a10530741 87 ds3231_time_t time = {50,20,10,1,0}; //seconds, min, hours, am_pm, mode
kidecha_rahul 17:f0008ebb1040 88
kidecha_rahul 17:f0008ebb1040 89
kidecha_rahul 17:f0008ebb1040 90 rtn_val = rtc.set_time(time);
kidecha_rahul 17:f0008ebb1040 91
kidecha_rahul 17:f0008ebb1040 92
kidecha_rahul 17:f0008ebb1040 93 //see datasheet for calendar format
kidecha_rahul 21:193a10530741 94 ds3231_calendar_t calendar = {3,29,6,21}; //day date month year
kidecha_rahul 17:f0008ebb1040 95
kidecha_rahul 17:f0008ebb1040 96
kidecha_rahul 17:f0008ebb1040 97 rtn_val = rtc.set_calendar(calendar);
kidecha_rahul 17:f0008ebb1040 98
kidecha_rahul 17:f0008ebb1040 99
kidecha_rahul 17:f0008ebb1040 100 //see datasheet for calendar format
kidecha_rahul 17:f0008ebb1040 101
kidecha_rahul 17:f0008ebb1040 102 ds3231_cntl_stat_t data = {0x1C, 0x08};
kidecha_rahul 17:f0008ebb1040 103
kidecha_rahul 17:f0008ebb1040 104 rtn_val = rtc.set_cntl_stat_reg(data);
kidecha_rahul 17:f0008ebb1040 105 //------------------------------------------------------------------------------------------------------------------------------//
kidecha_rahul 17:f0008ebb1040 106
kidecha_rahul 17:f0008ebb1040 107
parthsagar2010 9:24ecf16eab0f 108 timer_fast.start();
parthsagar2010 15:0356e9454a60 109 DigitalOut rLed(LED2, LED_ON);
parthsagar2010 10:54aa50490b15 110 // pc.baud(9600);
coreyharris 3:420d5efbd967 111
parthsagar2010 11:300afaf2696b 112 //pc.set_baud(115200); // Baud rate = 115200
parthsagar2010 11:300afaf2696b 113 //pc.set_format(
parthsagar2010 11:300afaf2696b 114 // /* bits */ 8,
parthsagar2010 11:300afaf2696b 115 // /* parity */ BufferedSerial::None,
parthsagar2010 11:300afaf2696b 116 // /* stop bit */ 1 //1
parthsagar2010 11:300afaf2696b 117 //);
parthsagar2010 10:54aa50490b15 118 //uart_1.baud(115200);
coreyharris 1:86843c27cc81 119 InterruptIn ecgFIFO_int(P5_4); // Config P5_4 as int. in for the
parthsagar2010 8:6b9359f81cc0 120 ecgFIFO_int.fall(&ecgFIFO_callback_1); // ecg FIFO interrupt at falling edge
coreyharris 0:38c49bc37c7c 121
coreyharris 1:86843c27cc81 122 SPI spiBus(SPI2_MOSI, SPI2_MISO, SPI2_SCK); // SPI bus, P5_1 = MOSI,
coreyharris 1:86843c27cc81 123 // P5_2 = MISO, P5_0 = SCK
parthsagar2010 10:54aa50490b15 124
coreyharris 4:06e258ff0b97 125 MAX30003 ecgAFE(spiBus, P5_3); // New MAX30003 on spiBus, CS = P5_3
parthsagar2010 8:6b9359f81cc0 126
coreyharris 4:06e258ff0b97 127 ecg_config(ecgAFE); // Config ECG
parthsagar2010 12:10b49ad3c492 128
coreyharris 0:38c49bc37c7c 129
coreyharris 4:06e258ff0b97 130 ecgAFE.writeRegister( MAX30003::SYNCH , 0);
coreyharris 0:38c49bc37c7c 131
coreyharris 4:06e258ff0b97 132 uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status;
coreyharris 1:86843c27cc81 133 int16_t ecgSample[32];
parthsagar2010 9:24ecf16eab0f 134 //bool timerflag = false;
kidecha_rahul 21:193a10530741 135 int16_t ecgSample_1sec[250];
parthsagar2010 10:54aa50490b15 136 uint8_t ecg_1 = 0;
parthsagar2010 10:54aa50490b15 137 uint8_t ecg_2 = 0;
parthsagar2010 10:54aa50490b15 138 uint16_t onesec_counter = 0;
parthsagar2010 10:54aa50490b15 139 uint16_t onesec_counter_temp = 0;
parthsagar2010 10:54aa50490b15 140
parthsagar2010 9:24ecf16eab0f 141 int16_t sample = 300;
parthsagar2010 10:54aa50490b15 142 uint8_t final[10];
parthsagar2010 12:10b49ad3c492 143
parthsagar2010 10:54aa50490b15 144 uint16_t checksum_ = 0;
parthsagar2010 10:54aa50490b15 145 uint16_t mod_checksum = 0;
parthsagar2010 10:54aa50490b15 146
parthsagar2010 10:54aa50490b15 147 uint8_t p_1 = 0;
parthsagar2010 10:54aa50490b15 148 uint8_t p_2 = 0;
parthsagar2010 10:54aa50490b15 149 uint8_t p_3 = 0;
parthsagar2010 10:54aa50490b15 150 uint8_t p_4 = 0;
kidecha_rahul 18:101042d225ef 151 // uint8_t channel_num= 1;
kidecha_rahul 20:2e999e6568c1 152 uint8_t channel_num[1]= {0};
parthsagar2010 10:54aa50490b15 153 uint8_t data_len_1 = 0;
parthsagar2010 10:54aa50490b15 154 uint8_t data_len_2 = 0;
parthsagar2010 12:10b49ad3c492 155 uint32_t packet_1 = 0;
parthsagar2010 10:54aa50490b15 156 uint8_t cksm_1 = 0;
parthsagar2010 10:54aa50490b15 157 uint8_t cksm_2 = 0;
parthsagar2010 10:54aa50490b15 158 uint8_t header_device_id[3] = {0,0,210};
kidecha_rahul 19:7a084dc2f09d 159 // uint8_t header_device_id[3] = {0,0,1}; //for rahul
parthsagar2010 10:54aa50490b15 160 uint8_t header_packet_type[2] = {0,2};
parthsagar2010 10:54aa50490b15 161
parthsagar2010 10:54aa50490b15 162 uint8_t ending[5] = {'@','#','%','!','7'};
parthsagar2010 10:54aa50490b15 163
parthsagar2010 15:0356e9454a60 164 bool flip = true;
parthsagar2010 15:0356e9454a60 165 int sampleps = 0;
parthsagar2010 15:0356e9454a60 166
parthsagar2010 16:520034b124b6 167 char buf[20];//={"1622326341"};
parthsagar2010 15:0356e9454a60 168 // pc.write("Welcome",8*sizeof(char));
parthsagar2010 15:0356e9454a60 169 // printf("In the main loop"); //printf("In the main loop");
parthsagar2010 11:300afaf2696b 170 bool flag_first = false;
parthsagar2010 15:0356e9454a60 171 bool timestamp_reader = false;
kidecha_rahul 17:f0008ebb1040 172
kidecha_rahul 17:f0008ebb1040 173
kidecha_rahul 19:7a084dc2f09d 174 //---------------------------------hardware RTC check---------------------------------------------//
kidecha_rahul 17:f0008ebb1040 175 time_t epoch_time;
kidecha_rahul 17:f0008ebb1040 176
kidecha_rahul 17:f0008ebb1040 177 do {
kidecha_rahul 17:f0008ebb1040 178 rtc.get_time(&time);
kidecha_rahul 17:f0008ebb1040 179 rtc.get_calendar(&calendar);
kidecha_rahul 17:f0008ebb1040 180 epoch_time = rtc.get_epoch();
kidecha_rahul 17:f0008ebb1040 181 //printf("seconds since the Epoch: %ld\n", epoch_time);
parthsagar2010 12:10b49ad3c492 182
kidecha_rahul 17:f0008ebb1040 183 packet_1 = epoch_time;
kidecha_rahul 17:f0008ebb1040 184 }while((epoch_time % 60)!=0); // come out at the start of minute
kidecha_rahul 19:7a084dc2f09d 185
kidecha_rahul 19:7a084dc2f09d 186
kidecha_rahul 17:f0008ebb1040 187
parthsagar2010 16:520034b124b6 188 while(1)
parthsagar2010 9:24ecf16eab0f 189 {
kidecha_rahul 19:7a084dc2f09d 190
parthsagar2010 15:0356e9454a60 191 if ((onesec_counter>=125))
kidecha_rahul 19:7a084dc2f09d 192 { t++;
parthsagar2010 11:300afaf2696b 193 //t.start();
parthsagar2010 10:54aa50490b15 194 //ledA = !ledA;
kidecha_rahul 18:101042d225ef 195 pc.write((uint8_t *)header_device_id, sizeof(header_device_id)); // device ID
parthsagar2010 10:54aa50490b15 196
kidecha_rahul 18:101042d225ef 197 pc.write((uint8_t *)header_packet_type, sizeof(header_packet_type)); // packet type
kidecha_rahul 18:101042d225ef 198
kidecha_rahul 17:f0008ebb1040 199 epoch_time = rtc.get_epoch();
kidecha_rahul 17:f0008ebb1040 200 //time_t seconds = time(NULL); // if remove it the timestamp will be static
kidecha_rahul 17:f0008ebb1040 201 packet_1 = epoch_time; //
parthsagar2010 12:10b49ad3c492 202 //packet_1 ++;
parthsagar2010 15:0356e9454a60 203 // printf("Time as seconds since January 1, 1970 = %d\n", packet_1);
parthsagar2010 10:54aa50490b15 204 p_1 = packet_1 & 0xff;
parthsagar2010 10:54aa50490b15 205 p_2 = (packet_1 >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 206 p_3 = (packet_1 >> 16) & 0xff;
parthsagar2010 10:54aa50490b15 207 p_4 = (packet_1 >> 24) & 0xff;
parthsagar2010 10:54aa50490b15 208 // checksum_ = checksum_ + (packet_1 & 0xffff) + ((packet_1 >> 16) & 0xffff) ;
parthsagar2010 10:54aa50490b15 209 checksum_ = checksum_ + p_1 + p_2 + p_3 + p_4 ;
parthsagar2010 10:54aa50490b15 210 uint8_t header_packet_id[4] = {p_4,p_3,p_2,p_1};
kidecha_rahul 18:101042d225ef 211 pc.write((uint8_t *)header_packet_id, sizeof(header_packet_id)); // packet ID
kidecha_rahul 18:101042d225ef 212
kidecha_rahul 18:101042d225ef 213
parthsagar2010 16:520034b124b6 214 pc.write((uint8_t *)channel_num, sizeof(channel_num));
kidecha_rahul 18:101042d225ef 215
parthsagar2010 10:54aa50490b15 216 onesec_counter_temp = onesec_counter * 2;
parthsagar2010 10:54aa50490b15 217 data_len_1 = onesec_counter_temp & 0xff;
parthsagar2010 10:54aa50490b15 218 data_len_2 = (onesec_counter_temp >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 219 checksum_ = checksum_ + data_len_1 + data_len_2;
parthsagar2010 10:54aa50490b15 220 //pc.write((uint32_t *)packet_1, sizeof(packet_1));
parthsagar2010 10:54aa50490b15 221 uint8_t header_ecg_datalen[2] = {data_len_2,data_len_1};
parthsagar2010 10:54aa50490b15 222 pc.write((uint8_t *)header_ecg_datalen, sizeof(header_ecg_datalen));
kidecha_rahul 18:101042d225ef 223
parthsagar2010 10:54aa50490b15 224 mod_checksum = checksum_ % 65536 ;
parthsagar2010 10:54aa50490b15 225 cksm_1 = mod_checksum & 0xff;
parthsagar2010 10:54aa50490b15 226 cksm_2 = (mod_checksum >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 227 uint8_t header_ecg_checksum[2] = {cksm_2,cksm_1};
parthsagar2010 10:54aa50490b15 228 pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
parthsagar2010 10:54aa50490b15 229
parthsagar2010 10:54aa50490b15 230 pc.write((int16_t *)ecgSample_1sec,onesec_counter * sizeof(int16_t));
parthsagar2010 15:0356e9454a60 231 // printf("Samples per second %d \n", (onesec_counter));
parthsagar2010 10:54aa50490b15 232 onesec_counter = 0;
parthsagar2010 10:54aa50490b15 233 // memset(ecgSample_1sec, 0, sizeof(ecgSample_1sec));
parthsagar2010 10:54aa50490b15 234
parthsagar2010 10:54aa50490b15 235 pc.write((uint8_t *)ending, sizeof(ending));
parthsagar2010 10:54aa50490b15 236 checksum_ = 0;
parthsagar2010 15:0356e9454a60 237 //t.stop();
parthsagar2010 11:300afaf2696b 238 // auto us = t.elapsed_time().count();
parthsagar2010 15:0356e9454a60 239 // float time_taken = us/1000000;
parthsagar2010 15:0356e9454a60 240 // printf("Timer time: %lu ms \n", (time_taken*100));
parthsagar2010 15:0356e9454a60 241 // t.reset();
parthsagar2010 15:0356e9454a60 242 // timer_fast.reset();
kidecha_rahul 19:7a084dc2f09d 243
kidecha_rahul 19:7a084dc2f09d 244 if (t==10) //C1
kidecha_rahul 19:7a084dc2f09d 245 {
kidecha_rahul 19:7a084dc2f09d 246 S0=1;
kidecha_rahul 19:7a084dc2f09d 247 S1=0;
kidecha_rahul 19:7a084dc2f09d 248 S2=0;
kidecha_rahul 19:7a084dc2f09d 249 S3=0;
kidecha_rahul 20:2e999e6568c1 250 channel_num[0]= {1};
kidecha_rahul 19:7a084dc2f09d 251 }
kidecha_rahul 19:7a084dc2f09d 252 if (t==20) //C2
kidecha_rahul 19:7a084dc2f09d 253 {
kidecha_rahul 19:7a084dc2f09d 254 S0=0;
kidecha_rahul 19:7a084dc2f09d 255 S1=1;
kidecha_rahul 19:7a084dc2f09d 256 S2=0;
kidecha_rahul 19:7a084dc2f09d 257 S3=0;
kidecha_rahul 20:2e999e6568c1 258 channel_num[0]= {2};
kidecha_rahul 19:7a084dc2f09d 259 }
kidecha_rahul 19:7a084dc2f09d 260
kidecha_rahul 19:7a084dc2f09d 261 if (t==30) // C0
kidecha_rahul 19:7a084dc2f09d 262 {
kidecha_rahul 19:7a084dc2f09d 263 S0=0;
kidecha_rahul 19:7a084dc2f09d 264 S1=0;
kidecha_rahul 19:7a084dc2f09d 265 S2=0;
kidecha_rahul 19:7a084dc2f09d 266 S3=0;
kidecha_rahul 20:2e999e6568c1 267 channel_num[0]= {0};
kidecha_rahul 19:7a084dc2f09d 268 t=0;}
kidecha_rahul 21:193a10530741 269
kidecha_rahul 21:193a10530741 270 if (AB ==0) //5_7 = P17
kidecha_rahul 21:193a10530741 271 {t=50;
kidecha_rahul 21:193a10530741 272 S0=1;
kidecha_rahul 21:193a10530741 273 S1=0;
kidecha_rahul 21:193a10530741 274 S2=0;
kidecha_rahul 21:193a10530741 275 S3=0;
kidecha_rahul 21:193a10530741 276 channel_num[0]= {1};}
kidecha_rahul 21:193a10530741 277
kidecha_rahul 21:193a10530741 278 if (AC==0) // 6_0 = P18
kidecha_rahul 21:193a10530741 279 {t=60;
kidecha_rahul 21:193a10530741 280 S0=0;
kidecha_rahul 21:193a10530741 281 S1=1;
kidecha_rahul 21:193a10530741 282 S2=0;
kidecha_rahul 21:193a10530741 283 S3=0;
kidecha_rahul 21:193a10530741 284 channel_num[0]= {2};}
kidecha_rahul 19:7a084dc2f09d 285
parthsagar2010 9:24ecf16eab0f 286 }
coreyharris 4:06e258ff0b97 287 // Read back ECG samples from the FIFO
kidecha_rahul 20:2e999e6568c1 288 else if(ecgFIFOIntFlag==1)// && (timerflag == 0))
parthsagar2010 9:24ecf16eab0f 289 {
coreyharris 2:812d40f1853d 290
coreyharris 5:f8d1f651bef5 291 ecgFIFOIntFlag = 0;
coreyharris 4:06e258ff0b97 292 status = ecgAFE.readRegister( MAX30003::STATUS ); // Read the STATUS register
coreyharris 2:812d40f1853d 293
coreyharris 3:420d5efbd967 294 // Check if EINT interrupt asserted
parthsagar2010 9:24ecf16eab0f 295 if ( ( status & EINT_STATUS_MASK ) == EINT_STATUS_MASK )
parthsagar2010 9:24ecf16eab0f 296 {
coreyharris 3:420d5efbd967 297
coreyharris 4:06e258ff0b97 298 readECGSamples = 0; // Reset sample counter
coreyharris 3:420d5efbd967 299
coreyharris 2:812d40f1853d 300 do {
coreyharris 6:86ac850c718d 301 ecgFIFO = ecgAFE.readRegister( MAX30003::ECG_FIFO ); // Read FIFO
coreyharris 4:06e258ff0b97 302 ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data
parthsagar2010 10:54aa50490b15 303 ecgSample[readECGSamples] = ((ecgSample[readECGSamples]<<8)&0xFF00)|((ecgSample[readECGSamples]>>8)&0x00FF);
coreyharris 6:86ac850c718d 304 ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS_MASK; // Isolate ETAG
coreyharris 4:06e258ff0b97 305 readECGSamples++; // Increment sample counter
coreyharris 3:420d5efbd967 306
coreyharris 3:420d5efbd967 307 // Check that sample is not last sample in FIFO
coreyharris 6:86ac850c718d 308 } while ( ETAG[readECGSamples-1] == FIFO_VALID_SAMPLE_MASK ||
coreyharris 6:86ac850c718d 309 ETAG[readECGSamples-1] == FIFO_FAST_SAMPLE_MASK );
coreyharris 2:812d40f1853d 310
coreyharris 3:420d5efbd967 311 // Check if FIFO has overflowed
parthsagar2010 9:24ecf16eab0f 312 if( ETAG[readECGSamples - 1] == FIFO_OVF_MASK )
parthsagar2010 9:24ecf16eab0f 313 {
coreyharris 3:420d5efbd967 314 ecgAFE.writeRegister( MAX30003::FIFO_RST , 0); // Reset FIFO
johnGreeneMaxim 7:cf0855a0450a 315 rLed = 1;//notifies the user that an over flow occured
coreyharris 3:420d5efbd967 316 }
parthsagar2010 10:54aa50490b15 317 //uint8_t header_ecg_checksum[2] = {'%','%'};
parthsagar2010 10:54aa50490b15 318 //pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
coreyharris 3:420d5efbd967 319
parthsagar2010 10:54aa50490b15 320 //pc.write((int16_t *)ecgSample,readECGSamples * sizeof(int16_t ));
parthsagar2010 10:54aa50490b15 321 //memcpy(ecgSample_1sec , ecgSample, sizeof(ecgSample));
parthsagar2010 10:54aa50490b15 322
parthsagar2010 10:54aa50490b15 323 //memcpy(ecgSample_1sec + (onesec_counter * sizeof(int16_t)), ecgSample, sizeof(ecgSample));
parthsagar2010 15:0356e9454a60 324
parthsagar2010 15:0356e9454a60 325 if (flip)
parthsagar2010 15:0356e9454a60 326 {
parthsagar2010 15:0356e9454a60 327 sampleps = 12;
parthsagar2010 15:0356e9454a60 328 //printf("Flipped 12\r\n");
parthsagar2010 15:0356e9454a60 329 }
parthsagar2010 15:0356e9454a60 330 else
parthsagar2010 15:0356e9454a60 331 {
parthsagar2010 15:0356e9454a60 332 sampleps = 13;
parthsagar2010 15:0356e9454a60 333 // printf("Flipped 13\r\n");
parthsagar2010 15:0356e9454a60 334 }
parthsagar2010 15:0356e9454a60 335
parthsagar2010 15:0356e9454a60 336 for( idx = 0; idx < sampleps; idx++ )
parthsagar2010 9:24ecf16eab0f 337 {
parthsagar2010 9:24ecf16eab0f 338 //pc.printf("%6d\r\n", ecgSample[idx]);
parthsagar2010 9:24ecf16eab0f 339 ecgSample_1sec[onesec_counter] = ecgSample[idx];
parthsagar2010 10:54aa50490b15 340
parthsagar2010 10:54aa50490b15 341 cksm_1 = ecgSample[idx] & 0xff;
parthsagar2010 10:54aa50490b15 342 cksm_2 = (ecgSample[idx] >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 343 checksum_ += cksm_1 + cksm_2;
parthsagar2010 9:24ecf16eab0f 344 onesec_counter++;
coreyharris 6:86ac850c718d 345 }
parthsagar2010 15:0356e9454a60 346 flip =!flip;
parthsagar2010 15:0356e9454a60 347 rLed = ! rLed;
coreyharris 0:38c49bc37c7c 348 }
parthsagar2010 10:54aa50490b15 349
coreyharris 0:38c49bc37c7c 350 }
coreyharris 0:38c49bc37c7c 351 }
coreyharris 0:38c49bc37c7c 352 }
coreyharris 0:38c49bc37c7c 353
coreyharris 0:38c49bc37c7c 354
coreyharris 0:38c49bc37c7c 355
coreyharris 0:38c49bc37c7c 356
coreyharris 0:38c49bc37c7c 357 void ecg_config(MAX30003& ecgAFE) {
coreyharris 0:38c49bc37c7c 358
coreyharris 1:86843c27cc81 359 // Reset ECG to clear registers
coreyharris 1:86843c27cc81 360 ecgAFE.writeRegister( MAX30003::SW_RST , 0);
coreyharris 0:38c49bc37c7c 361
coreyharris 1:86843c27cc81 362 // General config register setting
coreyharris 1:86843c27cc81 363 MAX30003::GeneralConfiguration_u CNFG_GEN_r;
coreyharris 3:420d5efbd967 364 CNFG_GEN_r.bits.en_ecg = 1; // Enable ECG channel
kidecha_rahul 21:193a10530741 365 CNFG_GEN_r.bits.fmstr = 1; // set frequency to 32000kHz
coreyharris 3:420d5efbd967 366 CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input
coreyharris 3:420d5efbd967 367 CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input
coreyharris 3:420d5efbd967 368 CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias
coreyharris 3:420d5efbd967 369 CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA
coreyharris 3:420d5efbd967 370 CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection
parthsagar2010 12:10b49ad3c492 371 //CNFG_GEN_r.bits.fmstr = 1; //125 sps FMSTR 1
coreyharris 1:86843c27cc81 372 ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all);
coreyharris 1:86843c27cc81 373
coreyharris 1:86843c27cc81 374
coreyharris 1:86843c27cc81 375 // ECG Config register setting
coreyharris 1:86843c27cc81 376 MAX30003::ECGConfiguration_u CNFG_ECG_r;
coreyharris 3:420d5efbd967 377 CNFG_ECG_r.bits.dlpf = 1; // Digital LPF cutoff = 40Hz
coreyharris 3:420d5efbd967 378 CNFG_ECG_r.bits.dhpf = 1; // Digital HPF cutoff = 0.5Hz
coreyharris 3:420d5efbd967 379 CNFG_ECG_r.bits.gain = 3; // ECG gain = 160V/V
kidecha_rahul 21:193a10530741 380 CNFG_ECG_r.bits.rate = 2; // Sample rate = 125 sps
coreyharris 1:86843c27cc81 381 ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all);
coreyharris 1:86843c27cc81 382
coreyharris 1:86843c27cc81 383
coreyharris 1:86843c27cc81 384 //R-to-R configuration
coreyharris 1:86843c27cc81 385 MAX30003::RtoR1Configuration_u CNFG_RTOR_r;
coreyharris 3:420d5efbd967 386 CNFG_RTOR_r.bits.en_rtor = 1; // Enable R-to-R detection
coreyharris 1:86843c27cc81 387 ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all);
coreyharris 1:86843c27cc81 388
coreyharris 1:86843c27cc81 389
coreyharris 1:86843c27cc81 390 //Manage interrupts register setting
coreyharris 1:86843c27cc81 391 MAX30003::ManageInterrupts_u MNG_INT_r;
coreyharris 3:420d5efbd967 392 MNG_INT_r.bits.efit = 0b00011; // Assert EINT w/ 4 unread samples
coreyharris 3:420d5efbd967 393 MNG_INT_r.bits.clr_rrint = 0b01; // Clear R-to-R on RTOR reg. read back
coreyharris 1:86843c27cc81 394 ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all);
coreyharris 0:38c49bc37c7c 395
coreyharris 0:38c49bc37c7c 396
coreyharris 1:86843c27cc81 397 //Enable interrupts register setting
coreyharris 1:86843c27cc81 398 MAX30003::EnableInterrupts_u EN_INT_r;
coreyharris 5:f8d1f651bef5 399 EN_INT_r.all = 0;
coreyharris 3:420d5efbd967 400 EN_INT_r.bits.en_eint = 1; // Enable EINT interrupt
coreyharris 4:06e258ff0b97 401 EN_INT_r.bits.en_rrint = 0; // Disable R-to-R interrupt
coreyharris 3:420d5efbd967 402 EN_INT_r.bits.intb_type = 3; // Open-drain NMOS with internal pullup
coreyharris 1:86843c27cc81 403 ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all);
coreyharris 1:86843c27cc81 404
coreyharris 1:86843c27cc81 405
coreyharris 1:86843c27cc81 406 //Dyanmic modes config
coreyharris 1:86843c27cc81 407 MAX30003::ManageDynamicModes_u MNG_DYN_r;
coreyharris 3:420d5efbd967 408 MNG_DYN_r.bits.fast = 0; // Fast recovery mode disabled
coreyharris 1:86843c27cc81 409 ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all);
coreyharris 5:f8d1f651bef5 410
coreyharris 5:f8d1f651bef5 411 // MUX Config
coreyharris 5:f8d1f651bef5 412 MAX30003::MuxConfiguration_u CNFG_MUX_r;
coreyharris 5:f8d1f651bef5 413 CNFG_MUX_r.bits.openn = 0; // Connect ECGN to AFE channel
coreyharris 5:f8d1f651bef5 414 CNFG_MUX_r.bits.openp = 0; // Connect ECGP to AFE channel
coreyharris 5:f8d1f651bef5 415 ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all);
coreyharris 1:86843c27cc81 416
coreyharris 1:86843c27cc81 417 return;
coreyharris 0:38c49bc37c7c 418 }
coreyharris 0:38c49bc37c7c 419