Parth Sagar / Mbed OS MAX3000_Beta_July_first_demo

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Dependencies:   MAX30003 max32630fthr

main.cpp@16:520034b124b6, 2021-06-09 (annotated)

Committer:
parthsagar2010
Date:
Wed Jun 09 17:04:56 2021 +0000
Revision:
16:520034b124b6
Parent:
15:0356e9454a60
Child:
17:f0008ebb1040
channel_num+1 mux_config

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
parthsagar2010 16:520034b124b6 10 #define TARGET_TX_PIN P0_1
parthsagar2010 16:520034b124b6 11 #define TARGET_RX_PIN P0_0
parthsagar2010 11:300afaf2696b 12
parthsagar2010 9:24ecf16eab0f 13 Timer timer_fast;
parthsagar2010 10:54aa50490b15 14 Timer t;
coreyharris 0:38c49bc37c7c 15 MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
coreyharris 0:38c49bc37c7c 16
parthsagar2010 9:24ecf16eab0f 17 void task_fast(void);
parthsagar2010 9:24ecf16eab0f 18 DigitalOut ledA(LED2);
parthsagar2010 13:0e7bbc06083f 19
parthsagar2010 16:520034b124b6 20 DigitalOut EN(P1_7);
parthsagar2010 16:520034b124b6 21 DigitalOut A0(P1_4);
parthsagar2010 16:520034b124b6 22 DigitalOut A1(P7_2);
parthsagar2010 16:520034b124b6 23
coreyharris 0:38c49bc37c7c 24 void ecg_config(MAX30003 &ecgAFE);
parthsagar2010 11:300afaf2696b 25 //BufferedSerial pc(P3_1,P3_0); // Use USB debug probe for serial link static Unbuffered
parthsagar2010 15:0356e9454a60 26 static BufferedSerial pc(TARGET_TX_PIN, TARGET_RX_PIN, 230400); // 230400 works well
parthsagar2010 11:300afaf2696b 27
parthsagar2010 10:54aa50490b15 28 //Serial uart_1(USBTX, USBRX); // Use USB debug probe for serial link static Unbuffered
parthsagar2010 10:54aa50490b15 29 //
parthsagar2010 10:54aa50490b15 30 //Serial pc(P3_1,P3_0);
coreyharris 0:38c49bc37c7c 31 volatile bool ecgFIFOIntFlag = 0;
parthsagar2010 9:24ecf16eab0f 32 volatile bool timerflag = 0;
parthsagar2010 11:300afaf2696b 33
parthsagar2010 11:300afaf2696b 34 FileHandle *mbed::mbed_override_console(int fd)
parthsagar2010 11:300afaf2696b 35 {
parthsagar2010 11:300afaf2696b 36 return &pc;
parthsagar2010 11:300afaf2696b 37 }
parthsagar2010 11:300afaf2696b 38
parthsagar2010 8:6b9359f81cc0 39 void ecgFIFO_callback_1() { // Triggered when the ECG FIFO is about to be full
coreyharris 0:38c49bc37c7c 40
coreyharris 0:38c49bc37c7c 41 ecgFIFOIntFlag = 1;
coreyharris 0:38c49bc37c7c 42 }
coreyharris 0:38c49bc37c7c 43
parthsagar2010 12:10b49ad3c492 44 time_t asUnixTime(int year, int mon, int mday, int hour, int min, int sec) {
parthsagar2010 12:10b49ad3c492 45 struct tm t;
parthsagar2010 12:10b49ad3c492 46 t.tm_year = year - 1900;
parthsagar2010 12:10b49ad3c492 47 t.tm_mon = mon - 1; // convert to 0 based month
parthsagar2010 12:10b49ad3c492 48 t.tm_mday = mday;
parthsagar2010 12:10b49ad3c492 49 t.tm_hour = hour;
parthsagar2010 12:10b49ad3c492 50 t.tm_min = min;
parthsagar2010 12:10b49ad3c492 51 t.tm_sec = sec;
parthsagar2010 12:10b49ad3c492 52 t.tm_isdst = -1; // Is Daylight saving time on? 1 = yes, 0 = no, -1 = unknown
parthsagar2010 12:10b49ad3c492 53
parthsagar2010 12:10b49ad3c492 54 return mktime(&t); // returns seconds elapsed since January 1, 1970 (begin of the Epoch)
parthsagar2010 12:10b49ad3c492 55 }
parthsagar2010 11:300afaf2696b 56 int main(void)
coreyharris 3:420d5efbd967 57 {
parthsagar2010 16:520034b124b6 58 int t=0;
parthsagar2010 16:520034b124b6 59
parthsagar2010 16:520034b124b6 60 EN=0;
parthsagar2010 16:520034b124b6 61 EN=1;
parthsagar2010 16:520034b124b6 62 A0=0;
parthsagar2010 16:520034b124b6 63 A1=1;
parthsagar2010 16:520034b124b6 64
parthsagar2010 16:520034b124b6 65
parthsagar2010 16:520034b124b6 66
parthsagar2010 11:300afaf2696b 67 // Constants
coreyharris 4:06e258ff0b97 68 const int EINT_STATUS_MASK = 1 << 23;
coreyharris 6:86ac850c718d 69 const int FIFO_OVF_MASK = 0x7;
coreyharris 6:86ac850c718d 70 const int FIFO_VALID_SAMPLE_MASK = 0x0;
coreyharris 6:86ac850c718d 71 const int FIFO_FAST_SAMPLE_MASK = 0x1;
coreyharris 6:86ac850c718d 72 const int ETAG_BITS_MASK = 0x7;
parthsagar2010 9:24ecf16eab0f 73 timer_fast.start();
parthsagar2010 15:0356e9454a60 74 DigitalOut rLed(LED2, LED_ON);
parthsagar2010 10:54aa50490b15 75 // pc.baud(9600);
coreyharris 3:420d5efbd967 76
parthsagar2010 11:300afaf2696b 77 //pc.set_baud(115200); // Baud rate = 115200
parthsagar2010 11:300afaf2696b 78 //pc.set_format(
parthsagar2010 11:300afaf2696b 79 // /* bits */ 8,
parthsagar2010 11:300afaf2696b 80 // /* parity */ BufferedSerial::None,
parthsagar2010 11:300afaf2696b 81 // /* stop bit */ 1 //1
parthsagar2010 11:300afaf2696b 82 //);
parthsagar2010 10:54aa50490b15 83 //uart_1.baud(115200);
coreyharris 1:86843c27cc81 84 InterruptIn ecgFIFO_int(P5_4); // Config P5_4 as int. in for the
parthsagar2010 8:6b9359f81cc0 85 ecgFIFO_int.fall(&ecgFIFO_callback_1); // ecg FIFO interrupt at falling edge
coreyharris 0:38c49bc37c7c 86
coreyharris 1:86843c27cc81 87 SPI spiBus(SPI2_MOSI, SPI2_MISO, SPI2_SCK); // SPI bus, P5_1 = MOSI,
coreyharris 1:86843c27cc81 88 // P5_2 = MISO, P5_0 = SCK
parthsagar2010 10:54aa50490b15 89
coreyharris 4:06e258ff0b97 90 MAX30003 ecgAFE(spiBus, P5_3); // New MAX30003 on spiBus, CS = P5_3
parthsagar2010 8:6b9359f81cc0 91
coreyharris 4:06e258ff0b97 92 ecg_config(ecgAFE); // Config ECG
parthsagar2010 12:10b49ad3c492 93
coreyharris 0:38c49bc37c7c 94
coreyharris 4:06e258ff0b97 95 ecgAFE.writeRegister( MAX30003::SYNCH , 0);
coreyharris 0:38c49bc37c7c 96
coreyharris 4:06e258ff0b97 97 uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status;
coreyharris 1:86843c27cc81 98 int16_t ecgSample[32];
parthsagar2010 9:24ecf16eab0f 99 //bool timerflag = false;
parthsagar2010 10:54aa50490b15 100 int16_t ecgSample_1sec[200];
parthsagar2010 10:54aa50490b15 101 uint8_t ecg_1 = 0;
parthsagar2010 10:54aa50490b15 102 uint8_t ecg_2 = 0;
parthsagar2010 10:54aa50490b15 103 uint16_t onesec_counter = 0;
parthsagar2010 10:54aa50490b15 104 uint16_t onesec_counter_temp = 0;
parthsagar2010 10:54aa50490b15 105
parthsagar2010 9:24ecf16eab0f 106 int16_t sample = 300;
parthsagar2010 10:54aa50490b15 107 uint8_t final[10];
parthsagar2010 12:10b49ad3c492 108
parthsagar2010 10:54aa50490b15 109 uint16_t checksum_ = 0;
parthsagar2010 10:54aa50490b15 110 uint16_t mod_checksum = 0;
parthsagar2010 10:54aa50490b15 111
parthsagar2010 10:54aa50490b15 112 uint8_t p_1 = 0;
parthsagar2010 10:54aa50490b15 113 uint8_t p_2 = 0;
parthsagar2010 10:54aa50490b15 114 uint8_t p_3 = 0;
parthsagar2010 10:54aa50490b15 115 uint8_t p_4 = 0;
parthsagar2010 16:520034b124b6 116 uint8_t channel_num[1]= {1};
parthsagar2010 10:54aa50490b15 117 uint8_t data_len_1 = 0;
parthsagar2010 10:54aa50490b15 118 uint8_t data_len_2 = 0;
parthsagar2010 12:10b49ad3c492 119 uint32_t packet_1 = 0;
parthsagar2010 10:54aa50490b15 120 uint8_t cksm_1 = 0;
parthsagar2010 10:54aa50490b15 121 uint8_t cksm_2 = 0;
parthsagar2010 10:54aa50490b15 122 uint8_t header_device_id[3] = {0,0,210};
parthsagar2010 10:54aa50490b15 123 uint8_t header_packet_type[2] = {0,2};
parthsagar2010 10:54aa50490b15 124
parthsagar2010 10:54aa50490b15 125 uint8_t ending[5] = {'@','#','%','!','7'};
parthsagar2010 10:54aa50490b15 126
parthsagar2010 15:0356e9454a60 127 bool flip = true;
parthsagar2010 15:0356e9454a60 128 int sampleps = 0;
parthsagar2010 15:0356e9454a60 129
parthsagar2010 16:520034b124b6 130 char buf[20];//={"1622326341"};
parthsagar2010 15:0356e9454a60 131 // pc.write("Welcome",8*sizeof(char));
parthsagar2010 15:0356e9454a60 132 // printf("In the main loop"); //printf("In the main loop");
parthsagar2010 11:300afaf2696b 133 bool flag_first = false;
parthsagar2010 15:0356e9454a60 134 bool timestamp_reader = false;
parthsagar2010 16:520034b124b6 135 /* do
parthsagar2010 16:520034b124b6 136 {
parthsagar2010 16:520034b124b6 137 if (pc.readable())
parthsagar2010 16:520034b124b6 138 {
parthsagar2010 16:520034b124b6 139 scanf("%s",buf);
parthsagar2010 16:520034b124b6 140 printf("The entered string is %s : \n ",buf);*/
parthsagar2010 16:520034b124b6 141 // buf[20] = 1621297647;
parthsagar2010 16:520034b124b6 142 packet_1 = 1623243727; //atoi(buf);
parthsagar2010 12:10b49ad3c492 143 set_time(packet_1);
parthsagar2010 12:10b49ad3c492 144
parthsagar2010 16:520034b124b6 145 /* if ((packet_1 % 60) == 0)
parthsagar2010 15:0356e9454a60 146 {
parthsagar2010 16:520034b124b6 147 for (int u = 0;u<3;u++)
parthsagar2010 15:0356e9454a60 148 {
parthsagar2010 15:0356e9454a60 149 if (pc.readable())
parthsagar2010 15:0356e9454a60 150 {
parthsagar2010 15:0356e9454a60 151 scanf("%s",buf);
parthsagar2010 15:0356e9454a60 152 printf("Entered the minute string %s : \n ",buf);
parthsagar2010 15:0356e9454a60 153
parthsagar2010 15:0356e9454a60 154 packet_1 = atoi(buf);
parthsagar2010 15:0356e9454a60 155 set_time(packet_1);
parthsagar2010 15:0356e9454a60 156 }
parthsagar2010 16:520034b124b6 157 }
parthsagar2010 16:520034b124b6 158 timestamp_reader = true;
parthsagar2010 16:520034b124b6 159 }
parthsagar2010 16:520034b124b6 160 else
parthsagar2010 16:520034b124b6 161 {
parthsagar2010 15:0356e9454a60 162 //printf("The timestamp is not divisible by 60 \n");
parthsagar2010 16:520034b124b6 163 /* }
parthsagar2010 16:520034b124b6 164 flag_first = true;
coreyharris 2:812d40f1853d 165
parthsagar2010 11:300afaf2696b 166 }
parthsagar2010 11:300afaf2696b 167
parthsagar2010 16:520034b124b6 168 } while (timestamp_reader==false); */ // take the third timestamp
parthsagar2010 16:520034b124b6 169 while(1)
parthsagar2010 9:24ecf16eab0f 170 {
parthsagar2010 10:54aa50490b15 171
parthsagar2010 9:24ecf16eab0f 172
parthsagar2010 15:0356e9454a60 173 if ((onesec_counter>=125))
parthsagar2010 9:24ecf16eab0f 174 {
parthsagar2010 11:300afaf2696b 175 //t.start();
parthsagar2010 10:54aa50490b15 176 //ledA = !ledA;
parthsagar2010 12:10b49ad3c492 177
parthsagar2010 16:520034b124b6 178
parthsagar2010 16:520034b124b6 179
parthsagar2010 16:520034b124b6 180
parthsagar2010 10:54aa50490b15 181 pc.write((uint8_t *)header_device_id, sizeof(header_device_id));
parthsagar2010 10:54aa50490b15 182
parthsagar2010 10:54aa50490b15 183 pc.write((uint8_t *)header_packet_type, sizeof(header_packet_type));
parthsagar2010 16:520034b124b6 184 time_t seconds = time(NULL); // if remove it the timestamp will be static
parthsagar2010 16:520034b124b6 185 packet_1 = seconds; //
parthsagar2010 12:10b49ad3c492 186 //packet_1 ++;
parthsagar2010 15:0356e9454a60 187 // printf("Time as seconds since January 1, 1970 = %d\n", packet_1);
parthsagar2010 10:54aa50490b15 188 p_1 = packet_1 & 0xff;
parthsagar2010 10:54aa50490b15 189 p_2 = (packet_1 >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 190 p_3 = (packet_1 >> 16) & 0xff;
parthsagar2010 10:54aa50490b15 191 p_4 = (packet_1 >> 24) & 0xff;
parthsagar2010 10:54aa50490b15 192 // checksum_ = checksum_ + (packet_1 & 0xffff) + ((packet_1 >> 16) & 0xffff) ;
parthsagar2010 10:54aa50490b15 193 checksum_ = checksum_ + p_1 + p_2 + p_3 + p_4 ;
parthsagar2010 10:54aa50490b15 194 uint8_t header_packet_id[4] = {p_4,p_3,p_2,p_1};
parthsagar2010 10:54aa50490b15 195 pc.write((uint8_t *)header_packet_id, sizeof(header_packet_id));
parthsagar2010 16:520034b124b6 196 pc.write((uint8_t *)channel_num, sizeof(channel_num));
parthsagar2010 10:54aa50490b15 197 onesec_counter_temp = onesec_counter * 2;
parthsagar2010 10:54aa50490b15 198 data_len_1 = onesec_counter_temp & 0xff;
parthsagar2010 10:54aa50490b15 199 data_len_2 = (onesec_counter_temp >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 200 checksum_ = checksum_ + data_len_1 + data_len_2;
parthsagar2010 10:54aa50490b15 201 //pc.write((uint32_t *)packet_1, sizeof(packet_1));
parthsagar2010 10:54aa50490b15 202 uint8_t header_ecg_datalen[2] = {data_len_2,data_len_1};
parthsagar2010 10:54aa50490b15 203 pc.write((uint8_t *)header_ecg_datalen, sizeof(header_ecg_datalen));
parthsagar2010 10:54aa50490b15 204 mod_checksum = checksum_ % 65536 ;
parthsagar2010 10:54aa50490b15 205 cksm_1 = mod_checksum & 0xff;
parthsagar2010 10:54aa50490b15 206 cksm_2 = (mod_checksum >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 207 uint8_t header_ecg_checksum[2] = {cksm_2,cksm_1};
parthsagar2010 10:54aa50490b15 208 pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
parthsagar2010 10:54aa50490b15 209
parthsagar2010 10:54aa50490b15 210 pc.write((int16_t *)ecgSample_1sec,onesec_counter * sizeof(int16_t));
parthsagar2010 15:0356e9454a60 211 // printf("Samples per second %d \n", (onesec_counter));
parthsagar2010 10:54aa50490b15 212 onesec_counter = 0;
parthsagar2010 10:54aa50490b15 213 // memset(ecgSample_1sec, 0, sizeof(ecgSample_1sec));
parthsagar2010 10:54aa50490b15 214
parthsagar2010 10:54aa50490b15 215 pc.write((uint8_t *)ending, sizeof(ending));
parthsagar2010 10:54aa50490b15 216 checksum_ = 0;
parthsagar2010 15:0356e9454a60 217 //t.stop();
parthsagar2010 11:300afaf2696b 218 // auto us = t.elapsed_time().count();
parthsagar2010 15:0356e9454a60 219 // float time_taken = us/1000000;
parthsagar2010 15:0356e9454a60 220 // printf("Timer time: %lu ms \n", (time_taken*100));
parthsagar2010 15:0356e9454a60 221 // t.reset();
parthsagar2010 15:0356e9454a60 222 // timer_fast.reset();
parthsagar2010 9:24ecf16eab0f 223 }
coreyharris 4:06e258ff0b97 224 // Read back ECG samples from the FIFO
parthsagar2010 9:24ecf16eab0f 225 else if( (ecgFIFOIntFlag==1))// && (timerflag == 0))
parthsagar2010 9:24ecf16eab0f 226 {
coreyharris 2:812d40f1853d 227
coreyharris 5:f8d1f651bef5 228 ecgFIFOIntFlag = 0;
coreyharris 4:06e258ff0b97 229 status = ecgAFE.readRegister( MAX30003::STATUS ); // Read the STATUS register
coreyharris 2:812d40f1853d 230
coreyharris 3:420d5efbd967 231 // Check if EINT interrupt asserted
parthsagar2010 9:24ecf16eab0f 232 if ( ( status & EINT_STATUS_MASK ) == EINT_STATUS_MASK )
parthsagar2010 9:24ecf16eab0f 233 {
coreyharris 3:420d5efbd967 234
coreyharris 4:06e258ff0b97 235 readECGSamples = 0; // Reset sample counter
coreyharris 3:420d5efbd967 236
coreyharris 2:812d40f1853d 237 do {
coreyharris 6:86ac850c718d 238 ecgFIFO = ecgAFE.readRegister( MAX30003::ECG_FIFO ); // Read FIFO
coreyharris 4:06e258ff0b97 239 ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data
parthsagar2010 10:54aa50490b15 240 ecgSample[readECGSamples] = ((ecgSample[readECGSamples]<<8)&0xFF00)|((ecgSample[readECGSamples]>>8)&0x00FF);
coreyharris 6:86ac850c718d 241 ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS_MASK; // Isolate ETAG
coreyharris 4:06e258ff0b97 242 readECGSamples++; // Increment sample counter
coreyharris 3:420d5efbd967 243
coreyharris 3:420d5efbd967 244 // Check that sample is not last sample in FIFO
coreyharris 6:86ac850c718d 245 } while ( ETAG[readECGSamples-1] == FIFO_VALID_SAMPLE_MASK ||
coreyharris 6:86ac850c718d 246 ETAG[readECGSamples-1] == FIFO_FAST_SAMPLE_MASK );
coreyharris 2:812d40f1853d 247
coreyharris 3:420d5efbd967 248 // Check if FIFO has overflowed
parthsagar2010 9:24ecf16eab0f 249 if( ETAG[readECGSamples - 1] == FIFO_OVF_MASK )
parthsagar2010 9:24ecf16eab0f 250 {
coreyharris 3:420d5efbd967 251 ecgAFE.writeRegister( MAX30003::FIFO_RST , 0); // Reset FIFO
johnGreeneMaxim 7:cf0855a0450a 252 rLed = 1;//notifies the user that an over flow occured
coreyharris 3:420d5efbd967 253 }
parthsagar2010 10:54aa50490b15 254 //uint8_t header_ecg_checksum[2] = {'%','%'};
parthsagar2010 10:54aa50490b15 255 //pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
coreyharris 3:420d5efbd967 256
parthsagar2010 10:54aa50490b15 257 //pc.write((int16_t *)ecgSample,readECGSamples * sizeof(int16_t ));
parthsagar2010 10:54aa50490b15 258 //memcpy(ecgSample_1sec , ecgSample, sizeof(ecgSample));
parthsagar2010 10:54aa50490b15 259
parthsagar2010 10:54aa50490b15 260 //memcpy(ecgSample_1sec + (onesec_counter * sizeof(int16_t)), ecgSample, sizeof(ecgSample));
parthsagar2010 15:0356e9454a60 261
parthsagar2010 15:0356e9454a60 262 if (flip)
parthsagar2010 15:0356e9454a60 263 {
parthsagar2010 15:0356e9454a60 264 sampleps = 12;
parthsagar2010 15:0356e9454a60 265 //printf("Flipped 12\r\n");
parthsagar2010 15:0356e9454a60 266 }
parthsagar2010 15:0356e9454a60 267 else
parthsagar2010 15:0356e9454a60 268 {
parthsagar2010 15:0356e9454a60 269 sampleps = 13;
parthsagar2010 15:0356e9454a60 270 // printf("Flipped 13\r\n");
parthsagar2010 15:0356e9454a60 271 }
parthsagar2010 15:0356e9454a60 272
parthsagar2010 15:0356e9454a60 273 for( idx = 0; idx < sampleps; idx++ )
parthsagar2010 9:24ecf16eab0f 274 {
parthsagar2010 9:24ecf16eab0f 275 //pc.printf("%6d\r\n", ecgSample[idx]);
parthsagar2010 9:24ecf16eab0f 276 ecgSample_1sec[onesec_counter] = ecgSample[idx];
parthsagar2010 10:54aa50490b15 277
parthsagar2010 10:54aa50490b15 278 cksm_1 = ecgSample[idx] & 0xff;
parthsagar2010 10:54aa50490b15 279 cksm_2 = (ecgSample[idx] >> 8) & 0xff;
parthsagar2010 10:54aa50490b15 280 checksum_ += cksm_1 + cksm_2;
parthsagar2010 9:24ecf16eab0f 281 onesec_counter++;
coreyharris 6:86ac850c718d 282 }
parthsagar2010 15:0356e9454a60 283 flip =!flip;
parthsagar2010 15:0356e9454a60 284 rLed = ! rLed;
coreyharris 0:38c49bc37c7c 285 }
parthsagar2010 10:54aa50490b15 286
coreyharris 0:38c49bc37c7c 287 }
coreyharris 0:38c49bc37c7c 288 }
coreyharris 0:38c49bc37c7c 289 }
coreyharris 0:38c49bc37c7c 290
coreyharris 0:38c49bc37c7c 291
coreyharris 0:38c49bc37c7c 292
coreyharris 0:38c49bc37c7c 293
coreyharris 0:38c49bc37c7c 294 void ecg_config(MAX30003& ecgAFE) {
coreyharris 0:38c49bc37c7c 295
coreyharris 1:86843c27cc81 296 // Reset ECG to clear registers
coreyharris 1:86843c27cc81 297 ecgAFE.writeRegister( MAX30003::SW_RST , 0);
coreyharris 0:38c49bc37c7c 298
coreyharris 1:86843c27cc81 299 // General config register setting
coreyharris 1:86843c27cc81 300 MAX30003::GeneralConfiguration_u CNFG_GEN_r;
coreyharris 3:420d5efbd967 301 CNFG_GEN_r.bits.en_ecg = 1; // Enable ECG channel
coreyharris 3:420d5efbd967 302 CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input
coreyharris 3:420d5efbd967 303 CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input
coreyharris 3:420d5efbd967 304 CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias
coreyharris 3:420d5efbd967 305 CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA
coreyharris 3:420d5efbd967 306 CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection
parthsagar2010 12:10b49ad3c492 307 //CNFG_GEN_r.bits.fmstr = 1; //125 sps FMSTR 1
coreyharris 1:86843c27cc81 308 ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all);
coreyharris 1:86843c27cc81 309
coreyharris 1:86843c27cc81 310
coreyharris 1:86843c27cc81 311 // ECG Config register setting
coreyharris 1:86843c27cc81 312 MAX30003::ECGConfiguration_u CNFG_ECG_r;
coreyharris 3:420d5efbd967 313 CNFG_ECG_r.bits.dlpf = 1; // Digital LPF cutoff = 40Hz
coreyharris 3:420d5efbd967 314 CNFG_ECG_r.bits.dhpf = 1; // Digital HPF cutoff = 0.5Hz
coreyharris 3:420d5efbd967 315 CNFG_ECG_r.bits.gain = 3; // ECG gain = 160V/V
coreyharris 3:420d5efbd967 316 CNFG_ECG_r.bits.rate = 2; // Sample rate = 128 sps
coreyharris 1:86843c27cc81 317 ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all);
coreyharris 1:86843c27cc81 318
coreyharris 1:86843c27cc81 319
coreyharris 1:86843c27cc81 320 //R-to-R configuration
coreyharris 1:86843c27cc81 321 MAX30003::RtoR1Configuration_u CNFG_RTOR_r;
coreyharris 3:420d5efbd967 322 CNFG_RTOR_r.bits.en_rtor = 1; // Enable R-to-R detection
coreyharris 1:86843c27cc81 323 ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all);
coreyharris 1:86843c27cc81 324
coreyharris 1:86843c27cc81 325
coreyharris 1:86843c27cc81 326 //Manage interrupts register setting
coreyharris 1:86843c27cc81 327 MAX30003::ManageInterrupts_u MNG_INT_r;
coreyharris 3:420d5efbd967 328 MNG_INT_r.bits.efit = 0b00011; // Assert EINT w/ 4 unread samples
coreyharris 3:420d5efbd967 329 MNG_INT_r.bits.clr_rrint = 0b01; // Clear R-to-R on RTOR reg. read back
coreyharris 1:86843c27cc81 330 ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all);
coreyharris 0:38c49bc37c7c 331
coreyharris 0:38c49bc37c7c 332
coreyharris 1:86843c27cc81 333 //Enable interrupts register setting
coreyharris 1:86843c27cc81 334 MAX30003::EnableInterrupts_u EN_INT_r;
coreyharris 5:f8d1f651bef5 335 EN_INT_r.all = 0;
coreyharris 3:420d5efbd967 336 EN_INT_r.bits.en_eint = 1; // Enable EINT interrupt
coreyharris 4:06e258ff0b97 337 EN_INT_r.bits.en_rrint = 0; // Disable R-to-R interrupt
coreyharris 3:420d5efbd967 338 EN_INT_r.bits.intb_type = 3; // Open-drain NMOS with internal pullup
coreyharris 1:86843c27cc81 339 ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all);
coreyharris 1:86843c27cc81 340
coreyharris 1:86843c27cc81 341
coreyharris 1:86843c27cc81 342 //Dyanmic modes config
coreyharris 1:86843c27cc81 343 MAX30003::ManageDynamicModes_u MNG_DYN_r;
coreyharris 3:420d5efbd967 344 MNG_DYN_r.bits.fast = 0; // Fast recovery mode disabled
coreyharris 1:86843c27cc81 345 ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all);
coreyharris 5:f8d1f651bef5 346
coreyharris 5:f8d1f651bef5 347 // MUX Config
coreyharris 5:f8d1f651bef5 348 MAX30003::MuxConfiguration_u CNFG_MUX_r;
coreyharris 5:f8d1f651bef5 349 CNFG_MUX_r.bits.openn = 0; // Connect ECGN to AFE channel
coreyharris 5:f8d1f651bef5 350 CNFG_MUX_r.bits.openp = 0; // Connect ECGP to AFE channel
coreyharris 5:f8d1f651bef5 351 ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all);
coreyharris 1:86843c27cc81 352
coreyharris 1:86843c27cc81 353 return;
coreyharris 0:38c49bc37c7c 354 }
coreyharris 0:38c49bc37c7c 355