MH / Mbed OS MAX30003WING_monitorhealth_beta_test1_SOFTWARERTC_RK_72321

Working_SRTC_7232021

Dependencies:   MAX30003 max32630fthr DS1307

main.cpp@19:0a602ad15284, 2021-07-23 (annotated)

Committer:
kidecha_rahul
Date:
Fri Jul 23 23:22:26 2021 +0000
Revision:
19:0a602ad15284
Parent:
18:101042d225ef 
Working_SRTC_7232021;

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>
parthsagar2010 11:300afaf2696b 9
kidecha_rahul 18:101042d225ef 10 #define TARGET_TX_PIN P3_1
kidecha_rahul 18:101042d225ef 11 #define TARGET_RX_PIN P3_0
parthsagar2010 11:300afaf2696b 12
kidecha_rahul 17:f0008ebb1040 13 #define SDA P3_4
kidecha_rahul 17:f0008ebb1040 14 #define SCL P3_5
kidecha_rahul 17:f0008ebb1040 15
parthsagar2010 9:24ecf16eab0f 16 Timer timer_fast;
parthsagar2010 10:54aa50490b15 17 Timer t;
coreyharris 0:38c49bc37c7c 18 MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
coreyharris 0:38c49bc37c7c 19
parthsagar2010 9:24ecf16eab0f 20 void task_fast(void);
kidecha_rahul 18:101042d225ef 21 //DigitalOut ledA(LED2);
parthsagar2010 13:0e7bbc06083f 22
parthsagar2010 16:520034b124b6 23 DigitalOut EN(P1_7);
parthsagar2010 16:520034b124b6 24 DigitalOut A0(P1_4);
parthsagar2010 16:520034b124b6 25 DigitalOut A1(P7_2);
parthsagar2010 16:520034b124b6 26
coreyharris 0:38c49bc37c7c 27 void ecg_config(MAX30003 &ecgAFE);
parthsagar2010 11:300afaf2696b 28 //BufferedSerial pc(P3_1,P3_0); // Use USB debug probe for serial link static Unbuffered
parthsagar2010 15:0356e9454a60 29 static BufferedSerial pc(TARGET_TX_PIN, TARGET_RX_PIN, 230400); // 230400 works well
parthsagar2010 11:300afaf2696b 30
parthsagar2010 10:54aa50490b15 31 //Serial uart_1(USBTX, USBRX); // Use USB debug probe for serial link static Unbuffered
parthsagar2010 10:54aa50490b15 32 //
parthsagar2010 10:54aa50490b15 33 //Serial pc(P3_1,P3_0);
coreyharris 0:38c49bc37c7c 34 volatile bool ecgFIFOIntFlag = 0;
parthsagar2010 9:24ecf16eab0f 35 volatile bool timerflag = 0;
parthsagar2010 11:300afaf2696b 36
parthsagar2010 11:300afaf2696b 37 FileHandle *mbed::mbed_override_console(int fd)
parthsagar2010 11:300afaf2696b 38 {
parthsagar2010 11:300afaf2696b 39 return &pc;
parthsagar2010 11:300afaf2696b 40 }
parthsagar2010 11:300afaf2696b 41
parthsagar2010 8:6b9359f81cc0 42 void ecgFIFO_callback_1() { // Triggered when the ECG FIFO is about to be full
coreyharris 0:38c49bc37c7c 43
coreyharris 0:38c49bc37c7c 44 ecgFIFOIntFlag = 1;
coreyharris 0:38c49bc37c7c 45 }
coreyharris 0:38c49bc37c7c 46
parthsagar2010 12:10b49ad3c492 47 time_t asUnixTime(int year, int mon, int mday, int hour, int min, int sec) {
parthsagar2010 12:10b49ad3c492 48 struct tm t;
parthsagar2010 12:10b49ad3c492 49 t.tm_year = year - 1900;
parthsagar2010 12:10b49ad3c492 50 t.tm_mon = mon - 1; // convert to 0 based month
parthsagar2010 12:10b49ad3c492 51 t.tm_mday = mday;
parthsagar2010 12:10b49ad3c492 52 t.tm_hour = hour;
parthsagar2010 12:10b49ad3c492 53 t.tm_min = min;
parthsagar2010 12:10b49ad3c492 54 t.tm_sec = sec;
parthsagar2010 12:10b49ad3c492 55 t.tm_isdst = -1; // Is Daylight saving time on? 1 = yes, 0 = no, -1 = unknown
parthsagar2010 12:10b49ad3c492 56
parthsagar2010 12:10b49ad3c492 57 return mktime(&t); // returns seconds elapsed since January 1, 1970 (begin of the Epoch)
parthsagar2010 12:10b49ad3c492 58 }
parthsagar2010 11:300afaf2696b 59 int main(void)
coreyharris 3:420d5efbd967 60 {
parthsagar2010 16:520034b124b6 61 int t=0;
parthsagar2010 16:520034b124b6 62
parthsagar2010 16:520034b124b6 63 EN=0;
parthsagar2010 16:520034b124b6 64 EN=1;
parthsagar2010 16:520034b124b6 65 A0=0;
parthsagar2010 16:520034b124b6 66 A1=1;
parthsagar2010 16:520034b124b6 67
parthsagar2010 16:520034b124b6 68
parthsagar2010 16:520034b124b6 69
parthsagar2010 11:300afaf2696b 70 // Constants
coreyharris 4:06e258ff0b97 71 const int EINT_STATUS_MASK = 1 << 23;
coreyharris 6:86ac850c718d 72 const int FIFO_OVF_MASK = 0x7;
coreyharris 6:86ac850c718d 73 const int FIFO_VALID_SAMPLE_MASK = 0x0;
coreyharris 6:86ac850c718d 74 const int FIFO_FAST_SAMPLE_MASK = 0x1;
coreyharris 6:86ac850c718d 75 const int ETAG_BITS_MASK = 0x7;
kidecha_rahul 17:f0008ebb1040 76
parthsagar2010 9:24ecf16eab0f 77 timer_fast.start();
parthsagar2010 15:0356e9454a60 78 DigitalOut rLed(LED2, LED_ON);
parthsagar2010 10:54aa50490b15 79 // pc.baud(9600);
coreyharris 3:420d5efbd967 80
parthsagar2010 11:300afaf2696b 81 //pc.set_baud(115200); // Baud rate = 115200
parthsagar2010 11:300afaf2696b 82 //pc.set_format(
parthsagar2010 11:300afaf2696b 83 // /* bits */ 8,
parthsagar2010 11:300afaf2696b 84 // /* parity */ BufferedSerial::None,
parthsagar2010 11:300afaf2696b 85 // /* stop bit */ 1 //1
parthsagar2010 11:300afaf2696b 86 //);
parthsagar2010 10:54aa50490b15 87 //uart_1.baud(115200);
coreyharris 1:86843c27cc81 88 InterruptIn ecgFIFO_int(P5_4); // Config P5_4 as int. in for the
parthsagar2010 8:6b9359f81cc0 89 ecgFIFO_int.fall(&ecgFIFO_callback_1); // ecg FIFO interrupt at falling edge
coreyharris 0:38c49bc37c7c 90
coreyharris 1:86843c27cc81 91 SPI spiBus(SPI2_MOSI, SPI2_MISO, SPI2_SCK); // SPI bus, P5_1 = MOSI,
coreyharris 1:86843c27cc81 92 // P5_2 = MISO, P5_0 = SCK
parthsagar2010 10:54aa50490b15 93
coreyharris 4:06e258ff0b97 94 MAX30003 ecgAFE(spiBus, P5_3); // New MAX30003 on spiBus, CS = P5_3
parthsagar2010 8:6b9359f81cc0 95
coreyharris 4:06e258ff0b97 96 ecg_config(ecgAFE); // Config ECG
parthsagar2010 12:10b49ad3c492 97
coreyharris 0:38c49bc37c7c 98
coreyharris 4:06e258ff0b97 99 ecgAFE.writeRegister( MAX30003::SYNCH , 0);
coreyharris 0:38c49bc37c7c 100
coreyharris 4:06e258ff0b97 101 uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status;
coreyharris 1:86843c27cc81 102 int16_t ecgSample[32];
parthsagar2010 9:24ecf16eab0f 103 //bool timerflag = false;
parthsagar2010 10:54aa50490b15 104 int16_t ecgSample_1sec[200];
parthsagar2010 10:54aa50490b15 105 uint8_t ecg_1 = 0;
parthsagar2010 10:54aa50490b15 106 uint8_t ecg_2 = 0;
parthsagar2010 10:54aa50490b15 107 uint16_t onesec_counter = 0;
parthsagar2010 10:54aa50490b15 108 uint16_t onesec_counter_temp = 0;
parthsagar2010 10:54aa50490b15 109
parthsagar2010 9:24ecf16eab0f 110 int16_t sample = 300;
parthsagar2010 10:54aa50490b15 111 uint8_t final[10];
parthsagar2010 12:10b49ad3c492 112
parthsagar2010 10:54aa50490b15 113 uint16_t checksum_ = 0;
parthsagar2010 10:54aa50490b15 114 uint16_t mod_checksum = 0;
parthsagar2010 10:54aa50490b15 115
parthsagar2010 10:54aa50490b15 116 uint8_t p_1 = 0;
parthsagar2010 10:54aa50490b15 117 uint8_t p_2 = 0;
parthsagar2010 10:54aa50490b15 118 uint8_t p_3 = 0;
parthsagar2010 10:54aa50490b15 119 uint8_t p_4 = 0;
kidecha_rahul 18:101042d225ef 120 // uint8_t channel_num= 1;
parthsagar2010 16:520034b124b6 121 uint8_t channel_num[1]= {1};
parthsagar2010 10:54aa50490b15 122 uint8_t data_len_1 = 0;
parthsagar2010 10:54aa50490b15 123 uint8_t data_len_2 = 0;
parthsagar2010 12:10b49ad3c492 124 uint32_t packet_1 = 0;
parthsagar2010 10:54aa50490b15 125 uint8_t cksm_1 = 0;
parthsagar2010 10:54aa50490b15 126 uint8_t cksm_2 = 0;
parthsagar2010 10:54aa50490b15 127 uint8_t header_device_id[3] = {0,0,210};
kidecha_rahul 19:0a602ad15284 128 //uint8_t header_device_id[3] = {0,0,1}; //for rahul
parthsagar2010 10:54aa50490b15 129 uint8_t header_packet_type[2] = {0,2};
parthsagar2010 10:54aa50490b15 130
parthsagar2010 10:54aa50490b15 131 uint8_t ending[5] = {'@','#','%','!','7'};
parthsagar2010 10:54aa50490b15 132
parthsagar2010 15:0356e9454a60 133 bool flip = true;
parthsagar2010 15:0356e9454a60 134 int sampleps = 0;
parthsagar2010 15:0356e9454a60 135
parthsagar2010 16:520034b124b6 136 char buf[20];//={"1622326341"};
parthsagar2010 15:0356e9454a60 137 // pc.write("Welcome",8*sizeof(char));
parthsagar2010 15:0356e9454a60 138 // printf("In the main loop"); //printf("In the main loop");
parthsagar2010 11:300afaf2696b 139 bool flag_first = false;
parthsagar2010 15:0356e9454a60 140 bool timestamp_reader = false;
kidecha_rahul 17:f0008ebb1040 141
kidecha_rahul 17:f0008ebb1040 142
kidecha_rahul 19:0a602ad15284 143 //---------------------------------software RTC check---------------------------------------------//
kidecha_rahul 19:0a602ad15284 144 do
kidecha_rahul 19:0a602ad15284 145 {
kidecha_rahul 19:0a602ad15284 146 if (pc.readable())
kidecha_rahul 19:0a602ad15284 147 {
kidecha_rahul 19:0a602ad15284 148 scanf("%s",buf);
kidecha_rahul 19:0a602ad15284 149 //printf("The entered string is %s : \n ",buf);*/
kidecha_rahul 19:0a602ad15284 150 // buf[20] = 1621297647;
kidecha_rahul 19:0a602ad15284 151 packet_1 = atoi(buf);
kidecha_rahul 19:0a602ad15284 152 set_time(packet_1);
parthsagar2010 12:10b49ad3c492 153
kidecha_rahul 19:0a602ad15284 154 if ((packet_1 % 60) == 0)
kidecha_rahul 19:0a602ad15284 155 {
kidecha_rahul 19:0a602ad15284 156 for (int u = 0;u<3;u++)
kidecha_rahul 19:0a602ad15284 157 {
kidecha_rahul 19:0a602ad15284 158 if (pc.readable())
kidecha_rahul 19:0a602ad15284 159 {
kidecha_rahul 19:0a602ad15284 160 scanf("%s",buf);
kidecha_rahul 19:0a602ad15284 161 printf("Entered the minute string %s : \n ",buf);
kidecha_rahul 19:0a602ad15284 162
kidecha_rahul 19:0a602ad15284 163 packet_1 = atoi(buf);
kidecha_rahul 19:0a602ad15284 164 set_time(packet_1);
kidecha_rahul 19:0a602ad15284 165 }
kidecha_rahul 19:0a602ad15284 166 }
kidecha_rahul 19:0a602ad15284 167 timestamp_reader = true;
kidecha_rahul 19:0a602ad15284 168 }
kidecha_rahul 19:0a602ad15284 169 else
kidecha_rahul 19:0a602ad15284 170 {
kidecha_rahul 19:0a602ad15284 171 //printf("The timestamp is not divisible by 60 \n");
kidecha_rahul 19:0a602ad15284 172 }
kidecha_rahul 19:0a602ad15284 173 flag_first = true;
kidecha_rahul 19:0a602ad15284 174
kidecha_rahul 19:0a602ad15284 175 }
kidecha_rahul 19:0a602ad15284 176
kidecha_rahul 19:0a602ad15284 177 } while (timestamp_reader==false); // take the third timestamp
kidecha_rahul 19:0a602ad15284 178
kidecha_rahul 17:f0008ebb1040 179
parthsagar2010 16:520034b124b6 180 while(1)
parthsagar2010 9:24ecf16eab0f 181 {
parthsagar2010 10:54aa50490b15 182
parthsagar2010 9:24ecf16eab0f 183
parthsagar2010 15:0356e9454a60 184 if ((onesec_counter>=125))
parthsagar2010 9:24ecf16eab0f 185 {
parthsagar2010 11:300afaf2696b 186 //t.start();
parthsagar2010 10:54aa50490b15 187 //ledA = !ledA;
kidecha_rahul 18:101042d225ef 188 pc.write((uint8_t *)header_device_id, sizeof(header_device_id)); // device ID
parthsagar2010 10:54aa50490b15 189
kidecha_rahul 18:101042d225ef 190 pc.write((uint8_t *)header_packet_type, sizeof(header_packet_type)); // packet type
kidecha_rahul 18:101042d225ef 191
kidecha_rahul 19:0a602ad15284 192 time_t seconds = time(NULL);
kidecha_rahul 19:0a602ad15284 193 packet_1 = seconds;
kidecha_rahul 19:0a602ad15284 194
kidecha_rahul 17:f0008ebb1040 195 //time_t seconds = time(NULL); // if remove it the timestamp will be static
kidecha_rahul 19:0a602ad15284 196 //packet_1 ++;
kidecha_rahul 19:0a602ad15284 197 // printf("Time as seconds since January 1, 1970 = %d\n", packet_1);
parthsagar2010 10:54aa50490b15 198 p_1 = packet_1 & 0xff;
parthsagar2010 10:54aa50490b15 199 p_2 = (packet_1 >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 200 p_3 = (packet_1 >> 16) & 0xff;
parthsagar2010 10:54aa50490b15 201 p_4 = (packet_1 >> 24) & 0xff;
parthsagar2010 10:54aa50490b15 202 // checksum_ = checksum_ + (packet_1 & 0xffff) + ((packet_1 >> 16) & 0xffff) ;
parthsagar2010 10:54aa50490b15 203 checksum_ = checksum_ + p_1 + p_2 + p_3 + p_4 ;
parthsagar2010 10:54aa50490b15 204 uint8_t header_packet_id[4] = {p_4,p_3,p_2,p_1};
kidecha_rahul 18:101042d225ef 205 pc.write((uint8_t *)header_packet_id, sizeof(header_packet_id)); // packet ID
kidecha_rahul 18:101042d225ef 206
kidecha_rahul 18:101042d225ef 207
parthsagar2010 16:520034b124b6 208 pc.write((uint8_t *)channel_num, sizeof(channel_num));
kidecha_rahul 18:101042d225ef 209
parthsagar2010 10:54aa50490b15 210 onesec_counter_temp = onesec_counter * 2;
parthsagar2010 10:54aa50490b15 211 data_len_1 = onesec_counter_temp & 0xff;
parthsagar2010 10:54aa50490b15 212 data_len_2 = (onesec_counter_temp >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 213 checksum_ = checksum_ + data_len_1 + data_len_2;
parthsagar2010 10:54aa50490b15 214 //pc.write((uint32_t *)packet_1, sizeof(packet_1));
parthsagar2010 10:54aa50490b15 215 uint8_t header_ecg_datalen[2] = {data_len_2,data_len_1};
parthsagar2010 10:54aa50490b15 216 pc.write((uint8_t *)header_ecg_datalen, sizeof(header_ecg_datalen));
kidecha_rahul 18:101042d225ef 217
parthsagar2010 10:54aa50490b15 218 mod_checksum = checksum_ % 65536 ;
parthsagar2010 10:54aa50490b15 219 cksm_1 = mod_checksum & 0xff;
parthsagar2010 10:54aa50490b15 220 cksm_2 = (mod_checksum >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 221 uint8_t header_ecg_checksum[2] = {cksm_2,cksm_1};
parthsagar2010 10:54aa50490b15 222 pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
parthsagar2010 10:54aa50490b15 223
parthsagar2010 10:54aa50490b15 224 pc.write((int16_t *)ecgSample_1sec,onesec_counter * sizeof(int16_t));
parthsagar2010 15:0356e9454a60 225 // printf("Samples per second %d \n", (onesec_counter));
parthsagar2010 10:54aa50490b15 226 onesec_counter = 0;
parthsagar2010 10:54aa50490b15 227 // memset(ecgSample_1sec, 0, sizeof(ecgSample_1sec));
parthsagar2010 10:54aa50490b15 228
parthsagar2010 10:54aa50490b15 229 pc.write((uint8_t *)ending, sizeof(ending));
parthsagar2010 10:54aa50490b15 230 checksum_ = 0;
parthsagar2010 15:0356e9454a60 231 //t.stop();
parthsagar2010 11:300afaf2696b 232 // auto us = t.elapsed_time().count();
parthsagar2010 15:0356e9454a60 233 // float time_taken = us/1000000;
parthsagar2010 15:0356e9454a60 234 // printf("Timer time: %lu ms \n", (time_taken*100));
parthsagar2010 15:0356e9454a60 235 // t.reset();
parthsagar2010 15:0356e9454a60 236 // timer_fast.reset();
parthsagar2010 9:24ecf16eab0f 237 }
coreyharris 4:06e258ff0b97 238 // Read back ECG samples from the FIFO
parthsagar2010 9:24ecf16eab0f 239 else if( (ecgFIFOIntFlag==1))// && (timerflag == 0))
parthsagar2010 9:24ecf16eab0f 240 {
coreyharris 2:812d40f1853d 241
coreyharris 5:f8d1f651bef5 242 ecgFIFOIntFlag = 0;
coreyharris 4:06e258ff0b97 243 status = ecgAFE.readRegister( MAX30003::STATUS ); // Read the STATUS register
coreyharris 2:812d40f1853d 244
coreyharris 3:420d5efbd967 245 // Check if EINT interrupt asserted
parthsagar2010 9:24ecf16eab0f 246 if ( ( status & EINT_STATUS_MASK ) == EINT_STATUS_MASK )
parthsagar2010 9:24ecf16eab0f 247 {
coreyharris 3:420d5efbd967 248
coreyharris 4:06e258ff0b97 249 readECGSamples = 0; // Reset sample counter
coreyharris 3:420d5efbd967 250
coreyharris 2:812d40f1853d 251 do {
coreyharris 6:86ac850c718d 252 ecgFIFO = ecgAFE.readRegister( MAX30003::ECG_FIFO ); // Read FIFO
coreyharris 4:06e258ff0b97 253 ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data
parthsagar2010 10:54aa50490b15 254 ecgSample[readECGSamples] = ((ecgSample[readECGSamples]<<8)&0xFF00)|((ecgSample[readECGSamples]>>8)&0x00FF);
coreyharris 6:86ac850c718d 255 ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS_MASK; // Isolate ETAG
coreyharris 4:06e258ff0b97 256 readECGSamples++; // Increment sample counter
coreyharris 3:420d5efbd967 257
coreyharris 3:420d5efbd967 258 // Check that sample is not last sample in FIFO
coreyharris 6:86ac850c718d 259 } while ( ETAG[readECGSamples-1] == FIFO_VALID_SAMPLE_MASK ||
coreyharris 6:86ac850c718d 260 ETAG[readECGSamples-1] == FIFO_FAST_SAMPLE_MASK );
coreyharris 2:812d40f1853d 261
coreyharris 3:420d5efbd967 262 // Check if FIFO has overflowed
parthsagar2010 9:24ecf16eab0f 263 if( ETAG[readECGSamples - 1] == FIFO_OVF_MASK )
parthsagar2010 9:24ecf16eab0f 264 {
coreyharris 3:420d5efbd967 265 ecgAFE.writeRegister( MAX30003::FIFO_RST , 0); // Reset FIFO
johnGreeneMaxim 7:cf0855a0450a 266 rLed = 1;//notifies the user that an over flow occured
coreyharris 3:420d5efbd967 267 }
parthsagar2010 10:54aa50490b15 268 //uint8_t header_ecg_checksum[2] = {'%','%'};
parthsagar2010 10:54aa50490b15 269 //pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
coreyharris 3:420d5efbd967 270
parthsagar2010 10:54aa50490b15 271 //pc.write((int16_t *)ecgSample,readECGSamples * sizeof(int16_t ));
parthsagar2010 10:54aa50490b15 272 //memcpy(ecgSample_1sec , ecgSample, sizeof(ecgSample));
parthsagar2010 10:54aa50490b15 273
parthsagar2010 10:54aa50490b15 274 //memcpy(ecgSample_1sec + (onesec_counter * sizeof(int16_t)), ecgSample, sizeof(ecgSample));
parthsagar2010 15:0356e9454a60 275
parthsagar2010 15:0356e9454a60 276 if (flip)
parthsagar2010 15:0356e9454a60 277 {
parthsagar2010 15:0356e9454a60 278 sampleps = 12;
parthsagar2010 15:0356e9454a60 279 //printf("Flipped 12\r\n");
parthsagar2010 15:0356e9454a60 280 }
parthsagar2010 15:0356e9454a60 281 else
parthsagar2010 15:0356e9454a60 282 {
parthsagar2010 15:0356e9454a60 283 sampleps = 13;
parthsagar2010 15:0356e9454a60 284 // printf("Flipped 13\r\n");
parthsagar2010 15:0356e9454a60 285 }
parthsagar2010 15:0356e9454a60 286
parthsagar2010 15:0356e9454a60 287 for( idx = 0; idx < sampleps; idx++ )
parthsagar2010 9:24ecf16eab0f 288 {
parthsagar2010 9:24ecf16eab0f 289 //pc.printf("%6d\r\n", ecgSample[idx]);
parthsagar2010 9:24ecf16eab0f 290 ecgSample_1sec[onesec_counter] = ecgSample[idx];
parthsagar2010 10:54aa50490b15 291
parthsagar2010 10:54aa50490b15 292 cksm_1 = ecgSample[idx] & 0xff;
parthsagar2010 10:54aa50490b15 293 cksm_2 = (ecgSample[idx] >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 294 checksum_ += cksm_1 + cksm_2;
parthsagar2010 9:24ecf16eab0f 295 onesec_counter++;
coreyharris 6:86ac850c718d 296 }
parthsagar2010 15:0356e9454a60 297 flip =!flip;
parthsagar2010 15:0356e9454a60 298 rLed = ! rLed;
coreyharris 0:38c49bc37c7c 299 }
parthsagar2010 10:54aa50490b15 300
coreyharris 0:38c49bc37c7c 301 }
coreyharris 0:38c49bc37c7c 302 }
coreyharris 0:38c49bc37c7c 303 }
coreyharris 0:38c49bc37c7c 304
coreyharris 0:38c49bc37c7c 305
coreyharris 0:38c49bc37c7c 306
coreyharris 0:38c49bc37c7c 307
coreyharris 0:38c49bc37c7c 308 void ecg_config(MAX30003& ecgAFE) {
coreyharris 0:38c49bc37c7c 309
coreyharris 1:86843c27cc81 310 // Reset ECG to clear registers
coreyharris 1:86843c27cc81 311 ecgAFE.writeRegister( MAX30003::SW_RST , 0);
coreyharris 0:38c49bc37c7c 312
coreyharris 1:86843c27cc81 313 // General config register setting
coreyharris 1:86843c27cc81 314 MAX30003::GeneralConfiguration_u CNFG_GEN_r;
coreyharris 3:420d5efbd967 315 CNFG_GEN_r.bits.en_ecg = 1; // Enable ECG channel
coreyharris 3:420d5efbd967 316 CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input
coreyharris 3:420d5efbd967 317 CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input
coreyharris 3:420d5efbd967 318 CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias
coreyharris 3:420d5efbd967 319 CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA
coreyharris 3:420d5efbd967 320 CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection
parthsagar2010 12:10b49ad3c492 321 //CNFG_GEN_r.bits.fmstr = 1; //125 sps FMSTR 1
coreyharris 1:86843c27cc81 322 ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all);
coreyharris 1:86843c27cc81 323
coreyharris 1:86843c27cc81 324
coreyharris 1:86843c27cc81 325 // ECG Config register setting
coreyharris 1:86843c27cc81 326 MAX30003::ECGConfiguration_u CNFG_ECG_r;
coreyharris 3:420d5efbd967 327 CNFG_ECG_r.bits.dlpf = 1; // Digital LPF cutoff = 40Hz
coreyharris 3:420d5efbd967 328 CNFG_ECG_r.bits.dhpf = 1; // Digital HPF cutoff = 0.5Hz
coreyharris 3:420d5efbd967 329 CNFG_ECG_r.bits.gain = 3; // ECG gain = 160V/V
coreyharris 3:420d5efbd967 330 CNFG_ECG_r.bits.rate = 2; // Sample rate = 128 sps
coreyharris 1:86843c27cc81 331 ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all);
coreyharris 1:86843c27cc81 332
coreyharris 1:86843c27cc81 333
coreyharris 1:86843c27cc81 334 //R-to-R configuration
coreyharris 1:86843c27cc81 335 MAX30003::RtoR1Configuration_u CNFG_RTOR_r;
coreyharris 3:420d5efbd967 336 CNFG_RTOR_r.bits.en_rtor = 1; // Enable R-to-R detection
coreyharris 1:86843c27cc81 337 ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all);
coreyharris 1:86843c27cc81 338
coreyharris 1:86843c27cc81 339
coreyharris 1:86843c27cc81 340 //Manage interrupts register setting
coreyharris 1:86843c27cc81 341 MAX30003::ManageInterrupts_u MNG_INT_r;
coreyharris 3:420d5efbd967 342 MNG_INT_r.bits.efit = 0b00011; // Assert EINT w/ 4 unread samples
coreyharris 3:420d5efbd967 343 MNG_INT_r.bits.clr_rrint = 0b01; // Clear R-to-R on RTOR reg. read back
coreyharris 1:86843c27cc81 344 ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all);
coreyharris 0:38c49bc37c7c 345
coreyharris 0:38c49bc37c7c 346
coreyharris 1:86843c27cc81 347 //Enable interrupts register setting
coreyharris 1:86843c27cc81 348 MAX30003::EnableInterrupts_u EN_INT_r;
coreyharris 5:f8d1f651bef5 349 EN_INT_r.all = 0;
coreyharris 3:420d5efbd967 350 EN_INT_r.bits.en_eint = 1; // Enable EINT interrupt
coreyharris 4:06e258ff0b97 351 EN_INT_r.bits.en_rrint = 0; // Disable R-to-R interrupt
coreyharris 3:420d5efbd967 352 EN_INT_r.bits.intb_type = 3; // Open-drain NMOS with internal pullup
coreyharris 1:86843c27cc81 353 ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all);
coreyharris 1:86843c27cc81 354
coreyharris 1:86843c27cc81 355
coreyharris 1:86843c27cc81 356 //Dyanmic modes config
coreyharris 1:86843c27cc81 357 MAX30003::ManageDynamicModes_u MNG_DYN_r;
coreyharris 3:420d5efbd967 358 MNG_DYN_r.bits.fast = 0; // Fast recovery mode disabled
coreyharris 1:86843c27cc81 359 ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all);
coreyharris 5:f8d1f651bef5 360
coreyharris 5:f8d1f651bef5 361 // MUX Config
coreyharris 5:f8d1f651bef5 362 MAX30003::MuxConfiguration_u CNFG_MUX_r;
coreyharris 5:f8d1f651bef5 363 CNFG_MUX_r.bits.openn = 0; // Connect ECGN to AFE channel
coreyharris 5:f8d1f651bef5 364 CNFG_MUX_r.bits.openp = 0; // Connect ECGP to AFE channel
coreyharris 5:f8d1f651bef5 365 ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all);
coreyharris 1:86843c27cc81 366
coreyharris 1:86843c27cc81 367 return;
coreyharris 0:38c49bc37c7c 368 }
coreyharris 0:38c49bc37c7c 369