working - HRTC, MUX
Dependencies: MAX30003 ds3231 max32630fthr
main.cpp@24:fc2c2d105e6a, 2021-12-21 (annotated)
- Committer:
- parthsagar2010
- Date:
- Tue Dec 21 01:27:49 2021 +0000
- Revision:
- 24:fc2c2d105e6a
- Parent:
- 23:7590d93dfa5f
k
Who changed what in which revision?
User | Revision | Line number | New 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 | 23:7590d93dfa5f | 29 | DigitalOut S0(P4_0); //blue |
kidecha_rahul | 23:7590d93dfa5f | 30 | DigitalOut S1(P5_6); |
kidecha_rahul | 23:7590d93dfa5f | 31 | //DigitalOut S2(P3_3); |
kidecha_rahul | 23:7590d93dfa5f | 32 | //DigitalOut S3(P3_2); //white |
kidecha_rahul | 19:7a084dc2f09d | 33 | |
kidecha_rahul | 22:07eec382c267 | 34 | //channel feedback |
kidecha_rahul | 23:7590d93dfa5f | 35 | DigitalIn A(P5_5); //P17 |
kidecha_rahul | 23:7590d93dfa5f | 36 | //DigitalIn B(P6_0); //P18 |
kidecha_rahul | 23:7590d93dfa5f | 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; |
parthsagar2010 | 24:fc2c2d105e6a | 68 | S1=0; |
kidecha_rahul | 23:7590d93dfa5f | 69 | // S2=0; |
kidecha_rahul | 23:7590d93dfa5f | 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 | 23:7590d93dfa5f | 81 | |
kidecha_rahul | 23:7590d93dfa5f | 82 | |
kidecha_rahul | 17:f0008ebb1040 | 83 | //-------------------------------------------------------------RTC-------------------------------------------------------------// |
kidecha_rahul | 23:7590d93dfa5f | 84 | //instantiate rtc object |
kidecha_rahul | 17:f0008ebb1040 | 85 | Ds3231 rtc(SDA, SCL); |
kidecha_rahul | 23:7590d93dfa5f | 86 | if (A==0) |
kidecha_rahul | 23:7590d93dfa5f | 87 | { |
kidecha_rahul | 23:7590d93dfa5f | 88 | uint16_t rtn_val; |
kidecha_rahul | 23:7590d93dfa5f | 89 | //time = 12:00:00 AM 12hr mode |
parthsagar2010 | 24:fc2c2d105e6a | 90 | ds3231_time_t time = {50,40,13,1,0}; //seconds, min, hours, am=0/pm=1, mode 12=1/24=0 |
kidecha_rahul | 17:f0008ebb1040 | 91 | |
kidecha_rahul | 17:f0008ebb1040 | 92 | rtn_val = rtc.set_time(time); |
kidecha_rahul | 17:f0008ebb1040 | 93 | |
kidecha_rahul | 23:7590d93dfa5f | 94 | //see datasheet for calendar format |
parthsagar2010 | 24:fc2c2d105e6a | 95 | ds3231_calendar_t calendar = {5,2,9,21}; //day date month year |
kidecha_rahul | 17:f0008ebb1040 | 96 | |
kidecha_rahul | 23:7590d93dfa5f | 97 | rtn_val = rtc.set_calendar(calendar); |
kidecha_rahul | 17:f0008ebb1040 | 98 | |
kidecha_rahul | 17:f0008ebb1040 | 99 | //see datasheet for calendar format |
kidecha_rahul | 23:7590d93dfa5f | 100 | ds3231_cntl_stat_t data = {0x1C, 0x08}; |
kidecha_rahul | 17:f0008ebb1040 | 101 | |
kidecha_rahul | 23:7590d93dfa5f | 102 | rtn_val = rtc.set_cntl_stat_reg(data); |
kidecha_rahul | 23:7590d93dfa5f | 103 | }//------------------------------------------------------------------------------------------------------------------------------// |
kidecha_rahul | 17:f0008ebb1040 | 104 | |
kidecha_rahul | 17:f0008ebb1040 | 105 | |
kidecha_rahul | 22:07eec382c267 | 106 | //timer_fast.start(); |
parthsagar2010 | 15:0356e9454a60 | 107 | DigitalOut rLed(LED2, LED_ON); |
parthsagar2010 | 10:54aa50490b15 | 108 | // pc.baud(9600); |
coreyharris | 3:420d5efbd967 | 109 | |
parthsagar2010 | 11:300afaf2696b | 110 | //pc.set_baud(115200); // Baud rate = 115200 |
parthsagar2010 | 11:300afaf2696b | 111 | //pc.set_format( |
parthsagar2010 | 11:300afaf2696b | 112 | // /* bits */ 8, |
parthsagar2010 | 11:300afaf2696b | 113 | // /* parity */ BufferedSerial::None, |
parthsagar2010 | 11:300afaf2696b | 114 | // /* stop bit */ 1 //1 |
parthsagar2010 | 11:300afaf2696b | 115 | //); |
parthsagar2010 | 10:54aa50490b15 | 116 | //uart_1.baud(115200); |
coreyharris | 1:86843c27cc81 | 117 | InterruptIn ecgFIFO_int(P5_4); // Config P5_4 as int. in for the |
parthsagar2010 | 8:6b9359f81cc0 | 118 | ecgFIFO_int.fall(&ecgFIFO_callback_1); // ecg FIFO interrupt at falling edge |
coreyharris | 0:38c49bc37c7c | 119 | |
coreyharris | 1:86843c27cc81 | 120 | SPI spiBus(SPI2_MOSI, SPI2_MISO, SPI2_SCK); // SPI bus, P5_1 = MOSI, |
coreyharris | 1:86843c27cc81 | 121 | // P5_2 = MISO, P5_0 = SCK |
parthsagar2010 | 10:54aa50490b15 | 122 | |
coreyharris | 4:06e258ff0b97 | 123 | MAX30003 ecgAFE(spiBus, P5_3); // New MAX30003 on spiBus, CS = P5_3 |
parthsagar2010 | 8:6b9359f81cc0 | 124 | |
coreyharris | 4:06e258ff0b97 | 125 | ecg_config(ecgAFE); // Config ECG |
parthsagar2010 | 12:10b49ad3c492 | 126 | |
coreyharris | 0:38c49bc37c7c | 127 | |
coreyharris | 4:06e258ff0b97 | 128 | ecgAFE.writeRegister( MAX30003::SYNCH , 0); |
coreyharris | 0:38c49bc37c7c | 129 | |
coreyharris | 4:06e258ff0b97 | 130 | uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status; |
coreyharris | 1:86843c27cc81 | 131 | int16_t ecgSample[32]; |
parthsagar2010 | 9:24ecf16eab0f | 132 | //bool timerflag = false; |
kidecha_rahul | 22:07eec382c267 | 133 | int16_t ecgSample_1sec[125]; |
parthsagar2010 | 10:54aa50490b15 | 134 | uint8_t ecg_1 = 0; |
parthsagar2010 | 10:54aa50490b15 | 135 | uint8_t ecg_2 = 0; |
parthsagar2010 | 10:54aa50490b15 | 136 | uint16_t onesec_counter = 0; |
parthsagar2010 | 10:54aa50490b15 | 137 | uint16_t onesec_counter_temp = 0; |
parthsagar2010 | 10:54aa50490b15 | 138 | |
kidecha_rahul | 22:07eec382c267 | 139 | // int16_t sample = 300; |
kidecha_rahul | 22:07eec382c267 | 140 | // uint8_t final[10]; |
parthsagar2010 | 12:10b49ad3c492 | 141 | |
parthsagar2010 | 10:54aa50490b15 | 142 | uint16_t checksum_ = 0; |
parthsagar2010 | 10:54aa50490b15 | 143 | uint16_t mod_checksum = 0; |
parthsagar2010 | 10:54aa50490b15 | 144 | |
parthsagar2010 | 10:54aa50490b15 | 145 | uint8_t p_1 = 0; |
parthsagar2010 | 10:54aa50490b15 | 146 | uint8_t p_2 = 0; |
parthsagar2010 | 10:54aa50490b15 | 147 | uint8_t p_3 = 0; |
parthsagar2010 | 10:54aa50490b15 | 148 | uint8_t p_4 = 0; |
kidecha_rahul | 18:101042d225ef | 149 | // uint8_t channel_num= 1; |
kidecha_rahul | 20:2e999e6568c1 | 150 | uint8_t channel_num[1]= {0}; |
parthsagar2010 | 10:54aa50490b15 | 151 | uint8_t data_len_1 = 0; |
parthsagar2010 | 10:54aa50490b15 | 152 | uint8_t data_len_2 = 0; |
parthsagar2010 | 12:10b49ad3c492 | 153 | uint32_t packet_1 = 0; |
parthsagar2010 | 10:54aa50490b15 | 154 | uint8_t cksm_1 = 0; |
parthsagar2010 | 10:54aa50490b15 | 155 | uint8_t cksm_2 = 0; |
parthsagar2010 | 10:54aa50490b15 | 156 | uint8_t header_device_id[3] = {0,0,210}; |
kidecha_rahul | 19:7a084dc2f09d | 157 | // uint8_t header_device_id[3] = {0,0,1}; //for rahul |
parthsagar2010 | 10:54aa50490b15 | 158 | uint8_t header_packet_type[2] = {0,2}; |
parthsagar2010 | 10:54aa50490b15 | 159 | |
parthsagar2010 | 10:54aa50490b15 | 160 | uint8_t ending[5] = {'@','#','%','!','7'}; |
parthsagar2010 | 10:54aa50490b15 | 161 | |
parthsagar2010 | 15:0356e9454a60 | 162 | bool flip = true; |
kidecha_rahul | 22:07eec382c267 | 163 | uint8_t sampleps = 0; |
parthsagar2010 | 15:0356e9454a60 | 164 | |
parthsagar2010 | 16:520034b124b6 | 165 | char buf[20];//={"1622326341"}; |
parthsagar2010 | 15:0356e9454a60 | 166 | // pc.write("Welcome",8*sizeof(char)); |
parthsagar2010 | 15:0356e9454a60 | 167 | // printf("In the main loop"); //printf("In the main loop"); |
parthsagar2010 | 11:300afaf2696b | 168 | bool flag_first = false; |
parthsagar2010 | 15:0356e9454a60 | 169 | bool timestamp_reader = false; |
kidecha_rahul | 17:f0008ebb1040 | 170 | |
kidecha_rahul | 17:f0008ebb1040 | 171 | |
kidecha_rahul | 19:7a084dc2f09d | 172 | //---------------------------------hardware RTC check---------------------------------------------// |
kidecha_rahul | 17:f0008ebb1040 | 173 | time_t epoch_time; |
kidecha_rahul | 17:f0008ebb1040 | 174 | |
kidecha_rahul | 17:f0008ebb1040 | 175 | do { |
kidecha_rahul | 23:7590d93dfa5f | 176 | // rtc.get_time(&time); |
kidecha_rahul | 23:7590d93dfa5f | 177 | // rtc.get_calendar(&calendar); |
kidecha_rahul | 17:f0008ebb1040 | 178 | epoch_time = rtc.get_epoch(); |
kidecha_rahul | 17:f0008ebb1040 | 179 | //printf("seconds since the Epoch: %ld\n", epoch_time); |
parthsagar2010 | 12:10b49ad3c492 | 180 | |
kidecha_rahul | 17:f0008ebb1040 | 181 | packet_1 = epoch_time; |
kidecha_rahul | 23:7590d93dfa5f | 182 | }while((epoch_time % 60)!=0); // come out at the start of minute |
kidecha_rahul | 23:7590d93dfa5f | 183 | |
kidecha_rahul | 19:7a084dc2f09d | 184 | |
kidecha_rahul | 17:f0008ebb1040 | 185 | |
parthsagar2010 | 16:520034b124b6 | 186 | while(1) |
parthsagar2010 | 9:24ecf16eab0f | 187 | { |
kidecha_rahul | 19:7a084dc2f09d | 188 | |
parthsagar2010 | 15:0356e9454a60 | 189 | if ((onesec_counter>=125)) |
kidecha_rahul | 23:7590d93dfa5f | 190 | { //t++; |
parthsagar2010 | 11:300afaf2696b | 191 | //t.start(); |
parthsagar2010 | 10:54aa50490b15 | 192 | //ledA = !ledA; |
kidecha_rahul | 18:101042d225ef | 193 | pc.write((uint8_t *)header_device_id, sizeof(header_device_id)); // device ID |
parthsagar2010 | 10:54aa50490b15 | 194 | |
kidecha_rahul | 18:101042d225ef | 195 | pc.write((uint8_t *)header_packet_type, sizeof(header_packet_type)); // packet type |
kidecha_rahul | 18:101042d225ef | 196 | |
kidecha_rahul | 17:f0008ebb1040 | 197 | epoch_time = rtc.get_epoch(); |
kidecha_rahul | 17:f0008ebb1040 | 198 | //time_t seconds = time(NULL); // if remove it the timestamp will be static |
kidecha_rahul | 17:f0008ebb1040 | 199 | packet_1 = epoch_time; // |
parthsagar2010 | 12:10b49ad3c492 | 200 | //packet_1 ++; |
parthsagar2010 | 15:0356e9454a60 | 201 | // printf("Time as seconds since January 1, 1970 = %d\n", packet_1); |
parthsagar2010 | 10:54aa50490b15 | 202 | p_1 = packet_1 & 0xff; |
parthsagar2010 | 10:54aa50490b15 | 203 | p_2 = (packet_1 >> 8) & 0xff; |
parthsagar2010 | 10:54aa50490b15 | 204 | p_3 = (packet_1 >> 16) & 0xff; |
parthsagar2010 | 10:54aa50490b15 | 205 | p_4 = (packet_1 >> 24) & 0xff; |
parthsagar2010 | 10:54aa50490b15 | 206 | // checksum_ = checksum_ + (packet_1 & 0xffff) + ((packet_1 >> 16) & 0xffff) ; |
parthsagar2010 | 10:54aa50490b15 | 207 | checksum_ = checksum_ + p_1 + p_2 + p_3 + p_4 ; |
parthsagar2010 | 10:54aa50490b15 | 208 | uint8_t header_packet_id[4] = {p_4,p_3,p_2,p_1}; |
kidecha_rahul | 18:101042d225ef | 209 | pc.write((uint8_t *)header_packet_id, sizeof(header_packet_id)); // packet ID |
kidecha_rahul | 18:101042d225ef | 210 | |
kidecha_rahul | 18:101042d225ef | 211 | |
parthsagar2010 | 16:520034b124b6 | 212 | pc.write((uint8_t *)channel_num, sizeof(channel_num)); |
kidecha_rahul | 18:101042d225ef | 213 | |
parthsagar2010 | 10:54aa50490b15 | 214 | onesec_counter_temp = onesec_counter * 2; |
parthsagar2010 | 10:54aa50490b15 | 215 | data_len_1 = onesec_counter_temp & 0xff; |
parthsagar2010 | 10:54aa50490b15 | 216 | data_len_2 = (onesec_counter_temp >> 8) & 0xff; |
parthsagar2010 | 10:54aa50490b15 | 217 | checksum_ = checksum_ + data_len_1 + data_len_2; |
parthsagar2010 | 10:54aa50490b15 | 218 | //pc.write((uint32_t *)packet_1, sizeof(packet_1)); |
parthsagar2010 | 10:54aa50490b15 | 219 | uint8_t header_ecg_datalen[2] = {data_len_2,data_len_1}; |
parthsagar2010 | 10:54aa50490b15 | 220 | pc.write((uint8_t *)header_ecg_datalen, sizeof(header_ecg_datalen)); |
kidecha_rahul | 18:101042d225ef | 221 | |
parthsagar2010 | 10:54aa50490b15 | 222 | mod_checksum = checksum_ % 65536 ; |
parthsagar2010 | 10:54aa50490b15 | 223 | cksm_1 = mod_checksum & 0xff; |
parthsagar2010 | 10:54aa50490b15 | 224 | cksm_2 = (mod_checksum >> 8) & 0xff; |
parthsagar2010 | 10:54aa50490b15 | 225 | uint8_t header_ecg_checksum[2] = {cksm_2,cksm_1}; |
parthsagar2010 | 10:54aa50490b15 | 226 | pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum)); |
parthsagar2010 | 10:54aa50490b15 | 227 | |
parthsagar2010 | 10:54aa50490b15 | 228 | pc.write((int16_t *)ecgSample_1sec,onesec_counter * sizeof(int16_t)); |
parthsagar2010 | 15:0356e9454a60 | 229 | // printf("Samples per second %d \n", (onesec_counter)); |
parthsagar2010 | 10:54aa50490b15 | 230 | onesec_counter = 0; |
parthsagar2010 | 10:54aa50490b15 | 231 | // memset(ecgSample_1sec, 0, sizeof(ecgSample_1sec)); |
parthsagar2010 | 10:54aa50490b15 | 232 | |
parthsagar2010 | 10:54aa50490b15 | 233 | pc.write((uint8_t *)ending, sizeof(ending)); |
parthsagar2010 | 10:54aa50490b15 | 234 | checksum_ = 0; |
parthsagar2010 | 15:0356e9454a60 | 235 | //t.stop(); |
parthsagar2010 | 11:300afaf2696b | 236 | // auto us = t.elapsed_time().count(); |
parthsagar2010 | 15:0356e9454a60 | 237 | // float time_taken = us/1000000; |
parthsagar2010 | 15:0356e9454a60 | 238 | // printf("Timer time: %lu ms \n", (time_taken*100)); |
parthsagar2010 | 15:0356e9454a60 | 239 | // t.reset(); |
parthsagar2010 | 15:0356e9454a60 | 240 | // timer_fast.reset(); |
kidecha_rahul | 19:7a084dc2f09d | 241 | |
kidecha_rahul | 19:7a084dc2f09d | 242 | if (t==10) //C1 |
kidecha_rahul | 19:7a084dc2f09d | 243 | { |
kidecha_rahul | 19:7a084dc2f09d | 244 | S0=1; |
kidecha_rahul | 19:7a084dc2f09d | 245 | S1=0; |
kidecha_rahul | 23:7590d93dfa5f | 246 | //S2=0; |
kidecha_rahul | 23:7590d93dfa5f | 247 | //S3=0; |
kidecha_rahul | 20:2e999e6568c1 | 248 | channel_num[0]= {1}; |
kidecha_rahul | 19:7a084dc2f09d | 249 | } |
kidecha_rahul | 19:7a084dc2f09d | 250 | if (t==20) //C2 |
kidecha_rahul | 19:7a084dc2f09d | 251 | { |
kidecha_rahul | 19:7a084dc2f09d | 252 | S0=0; |
kidecha_rahul | 19:7a084dc2f09d | 253 | S1=1; |
kidecha_rahul | 23:7590d93dfa5f | 254 | //S2=0; |
kidecha_rahul | 23:7590d93dfa5f | 255 | //S3=0; |
kidecha_rahul | 20:2e999e6568c1 | 256 | channel_num[0]= {2}; |
kidecha_rahul | 19:7a084dc2f09d | 257 | } |
kidecha_rahul | 19:7a084dc2f09d | 258 | |
kidecha_rahul | 19:7a084dc2f09d | 259 | if (t==30) // C0 |
kidecha_rahul | 19:7a084dc2f09d | 260 | { |
kidecha_rahul | 19:7a084dc2f09d | 261 | S0=0; |
kidecha_rahul | 19:7a084dc2f09d | 262 | S1=0; |
kidecha_rahul | 23:7590d93dfa5f | 263 | //S2=0; |
kidecha_rahul | 23:7590d93dfa5f | 264 | //S3=0; |
kidecha_rahul | 20:2e999e6568c1 | 265 | channel_num[0]= {0}; |
kidecha_rahul | 19:7a084dc2f09d | 266 | t=0;} |
kidecha_rahul | 21:193a10530741 | 267 | |
kidecha_rahul | 23:7590d93dfa5f | 268 | /* if (A==0) //5_7 = P17 |
kidecha_rahul | 22:07eec382c267 | 269 | {//t=50; |
kidecha_rahul | 22:07eec382c267 | 270 | S0=0; |
kidecha_rahul | 22:07eec382c267 | 271 | S1=0; |
kidecha_rahul | 22:07eec382c267 | 272 | S2=0; |
kidecha_rahul | 22:07eec382c267 | 273 | S3=0; |
kidecha_rahul | 22:07eec382c267 | 274 | channel_num[0]= {0};} |
kidecha_rahul | 22:07eec382c267 | 275 | |
kidecha_rahul | 22:07eec382c267 | 276 | if (B==0) // 6_0 = P18 |
kidecha_rahul | 22:07eec382c267 | 277 | { |
kidecha_rahul | 21:193a10530741 | 278 | S0=1; |
kidecha_rahul | 21:193a10530741 | 279 | S1=0; |
kidecha_rahul | 21:193a10530741 | 280 | S2=0; |
kidecha_rahul | 21:193a10530741 | 281 | S3=0; |
kidecha_rahul | 22:07eec382c267 | 282 | channel_num[0]= {1};} |
kidecha_rahul | 22:07eec382c267 | 283 | |
kidecha_rahul | 22:07eec382c267 | 284 | if (C==0) // 4_0 = P19 |
kidecha_rahul | 22:07eec382c267 | 285 | { |
kidecha_rahul | 21:193a10530741 | 286 | S0=0; |
kidecha_rahul | 21:193a10530741 | 287 | S1=1; |
kidecha_rahul | 21:193a10530741 | 288 | S2=0; |
kidecha_rahul | 21:193a10530741 | 289 | S3=0; |
kidecha_rahul | 23:7590d93dfa5f | 290 | channel_num[0]= {2};} */ |
kidecha_rahul | 19:7a084dc2f09d | 291 | |
parthsagar2010 | 9:24ecf16eab0f | 292 | } |
coreyharris | 4:06e258ff0b97 | 293 | // Read back ECG samples from the FIFO |
kidecha_rahul | 20:2e999e6568c1 | 294 | else if(ecgFIFOIntFlag==1)// && (timerflag == 0)) |
parthsagar2010 | 9:24ecf16eab0f | 295 | { |
coreyharris | 2:812d40f1853d | 296 | |
coreyharris | 5:f8d1f651bef5 | 297 | ecgFIFOIntFlag = 0; |
coreyharris | 4:06e258ff0b97 | 298 | status = ecgAFE.readRegister( MAX30003::STATUS ); // Read the STATUS register |
coreyharris | 2:812d40f1853d | 299 | |
coreyharris | 3:420d5efbd967 | 300 | // Check if EINT interrupt asserted |
parthsagar2010 | 9:24ecf16eab0f | 301 | if ( ( status & EINT_STATUS_MASK ) == EINT_STATUS_MASK ) |
parthsagar2010 | 9:24ecf16eab0f | 302 | { |
coreyharris | 3:420d5efbd967 | 303 | |
coreyharris | 4:06e258ff0b97 | 304 | readECGSamples = 0; // Reset sample counter |
coreyharris | 3:420d5efbd967 | 305 | |
coreyharris | 2:812d40f1853d | 306 | do { |
coreyharris | 6:86ac850c718d | 307 | ecgFIFO = ecgAFE.readRegister( MAX30003::ECG_FIFO ); // Read FIFO |
coreyharris | 4:06e258ff0b97 | 308 | ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data |
parthsagar2010 | 10:54aa50490b15 | 309 | ecgSample[readECGSamples] = ((ecgSample[readECGSamples]<<8)&0xFF00)|((ecgSample[readECGSamples]>>8)&0x00FF); |
coreyharris | 6:86ac850c718d | 310 | ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS_MASK; // Isolate ETAG |
coreyharris | 4:06e258ff0b97 | 311 | readECGSamples++; // Increment sample counter |
coreyharris | 3:420d5efbd967 | 312 | |
coreyharris | 3:420d5efbd967 | 313 | // Check that sample is not last sample in FIFO |
coreyharris | 6:86ac850c718d | 314 | } while ( ETAG[readECGSamples-1] == FIFO_VALID_SAMPLE_MASK || |
coreyharris | 6:86ac850c718d | 315 | ETAG[readECGSamples-1] == FIFO_FAST_SAMPLE_MASK ); |
coreyharris | 2:812d40f1853d | 316 | |
coreyharris | 3:420d5efbd967 | 317 | // Check if FIFO has overflowed |
parthsagar2010 | 9:24ecf16eab0f | 318 | if( ETAG[readECGSamples - 1] == FIFO_OVF_MASK ) |
parthsagar2010 | 9:24ecf16eab0f | 319 | { |
coreyharris | 3:420d5efbd967 | 320 | ecgAFE.writeRegister( MAX30003::FIFO_RST , 0); // Reset FIFO |
johnGreeneMaxim | 7:cf0855a0450a | 321 | rLed = 1;//notifies the user that an over flow occured |
coreyharris | 3:420d5efbd967 | 322 | } |
parthsagar2010 | 10:54aa50490b15 | 323 | //uint8_t header_ecg_checksum[2] = {'%','%'}; |
parthsagar2010 | 10:54aa50490b15 | 324 | //pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum)); |
coreyharris | 3:420d5efbd967 | 325 | |
parthsagar2010 | 10:54aa50490b15 | 326 | //pc.write((int16_t *)ecgSample,readECGSamples * sizeof(int16_t )); |
parthsagar2010 | 10:54aa50490b15 | 327 | //memcpy(ecgSample_1sec , ecgSample, sizeof(ecgSample)); |
parthsagar2010 | 10:54aa50490b15 | 328 | |
parthsagar2010 | 10:54aa50490b15 | 329 | //memcpy(ecgSample_1sec + (onesec_counter * sizeof(int16_t)), ecgSample, sizeof(ecgSample)); |
parthsagar2010 | 15:0356e9454a60 | 330 | |
parthsagar2010 | 15:0356e9454a60 | 331 | if (flip) |
parthsagar2010 | 15:0356e9454a60 | 332 | { |
parthsagar2010 | 15:0356e9454a60 | 333 | sampleps = 12; |
parthsagar2010 | 15:0356e9454a60 | 334 | //printf("Flipped 12\r\n"); |
parthsagar2010 | 15:0356e9454a60 | 335 | } |
parthsagar2010 | 15:0356e9454a60 | 336 | else |
parthsagar2010 | 15:0356e9454a60 | 337 | { |
parthsagar2010 | 15:0356e9454a60 | 338 | sampleps = 13; |
parthsagar2010 | 15:0356e9454a60 | 339 | // printf("Flipped 13\r\n"); |
parthsagar2010 | 15:0356e9454a60 | 340 | } |
parthsagar2010 | 15:0356e9454a60 | 341 | |
parthsagar2010 | 15:0356e9454a60 | 342 | for( idx = 0; idx < sampleps; idx++ ) |
parthsagar2010 | 9:24ecf16eab0f | 343 | { |
parthsagar2010 | 9:24ecf16eab0f | 344 | //pc.printf("%6d\r\n", ecgSample[idx]); |
parthsagar2010 | 9:24ecf16eab0f | 345 | ecgSample_1sec[onesec_counter] = ecgSample[idx]; |
parthsagar2010 | 10:54aa50490b15 | 346 | |
parthsagar2010 | 10:54aa50490b15 | 347 | cksm_1 = ecgSample[idx] & 0xff; |
parthsagar2010 | 10:54aa50490b15 | 348 | cksm_2 = (ecgSample[idx] >> 8) & 0xff; |
parthsagar2010 | 10:54aa50490b15 | 349 | checksum_ += cksm_1 + cksm_2; |
parthsagar2010 | 9:24ecf16eab0f | 350 | onesec_counter++; |
coreyharris | 6:86ac850c718d | 351 | } |
parthsagar2010 | 15:0356e9454a60 | 352 | flip =!flip; |
parthsagar2010 | 15:0356e9454a60 | 353 | rLed = ! rLed; |
coreyharris | 0:38c49bc37c7c | 354 | } |
parthsagar2010 | 10:54aa50490b15 | 355 | |
coreyharris | 0:38c49bc37c7c | 356 | } |
coreyharris | 0:38c49bc37c7c | 357 | } |
coreyharris | 0:38c49bc37c7c | 358 | } |
coreyharris | 0:38c49bc37c7c | 359 | |
coreyharris | 0:38c49bc37c7c | 360 | |
coreyharris | 0:38c49bc37c7c | 361 | |
coreyharris | 0:38c49bc37c7c | 362 | |
coreyharris | 0:38c49bc37c7c | 363 | void ecg_config(MAX30003& ecgAFE) { |
coreyharris | 0:38c49bc37c7c | 364 | |
coreyharris | 1:86843c27cc81 | 365 | // Reset ECG to clear registers |
coreyharris | 1:86843c27cc81 | 366 | ecgAFE.writeRegister( MAX30003::SW_RST , 0); |
coreyharris | 0:38c49bc37c7c | 367 | |
coreyharris | 1:86843c27cc81 | 368 | // General config register setting |
coreyharris | 1:86843c27cc81 | 369 | MAX30003::GeneralConfiguration_u CNFG_GEN_r; |
coreyharris | 3:420d5efbd967 | 370 | CNFG_GEN_r.bits.en_ecg = 1; // Enable ECG channel |
kidecha_rahul | 21:193a10530741 | 371 | CNFG_GEN_r.bits.fmstr = 1; // set frequency to 32000kHz |
coreyharris | 3:420d5efbd967 | 372 | CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input |
coreyharris | 3:420d5efbd967 | 373 | CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input |
coreyharris | 3:420d5efbd967 | 374 | CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias |
coreyharris | 3:420d5efbd967 | 375 | CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA |
coreyharris | 3:420d5efbd967 | 376 | CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection |
parthsagar2010 | 12:10b49ad3c492 | 377 | //CNFG_GEN_r.bits.fmstr = 1; //125 sps FMSTR 1 |
coreyharris | 1:86843c27cc81 | 378 | ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all); |
coreyharris | 1:86843c27cc81 | 379 | |
coreyharris | 1:86843c27cc81 | 380 | |
coreyharris | 1:86843c27cc81 | 381 | // ECG Config register setting |
coreyharris | 1:86843c27cc81 | 382 | MAX30003::ECGConfiguration_u CNFG_ECG_r; |
coreyharris | 3:420d5efbd967 | 383 | CNFG_ECG_r.bits.dlpf = 1; // Digital LPF cutoff = 40Hz |
coreyharris | 3:420d5efbd967 | 384 | CNFG_ECG_r.bits.dhpf = 1; // Digital HPF cutoff = 0.5Hz |
coreyharris | 3:420d5efbd967 | 385 | CNFG_ECG_r.bits.gain = 3; // ECG gain = 160V/V |
kidecha_rahul | 21:193a10530741 | 386 | CNFG_ECG_r.bits.rate = 2; // Sample rate = 125 sps |
coreyharris | 1:86843c27cc81 | 387 | ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all); |
coreyharris | 1:86843c27cc81 | 388 | |
coreyharris | 1:86843c27cc81 | 389 | |
coreyharris | 1:86843c27cc81 | 390 | //R-to-R configuration |
coreyharris | 1:86843c27cc81 | 391 | MAX30003::RtoR1Configuration_u CNFG_RTOR_r; |
coreyharris | 3:420d5efbd967 | 392 | CNFG_RTOR_r.bits.en_rtor = 1; // Enable R-to-R detection |
coreyharris | 1:86843c27cc81 | 393 | ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all); |
coreyharris | 1:86843c27cc81 | 394 | |
coreyharris | 1:86843c27cc81 | 395 | |
coreyharris | 1:86843c27cc81 | 396 | //Manage interrupts register setting |
coreyharris | 1:86843c27cc81 | 397 | MAX30003::ManageInterrupts_u MNG_INT_r; |
coreyharris | 3:420d5efbd967 | 398 | MNG_INT_r.bits.efit = 0b00011; // Assert EINT w/ 4 unread samples |
coreyharris | 3:420d5efbd967 | 399 | MNG_INT_r.bits.clr_rrint = 0b01; // Clear R-to-R on RTOR reg. read back |
coreyharris | 1:86843c27cc81 | 400 | ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all); |
coreyharris | 0:38c49bc37c7c | 401 | |
coreyharris | 0:38c49bc37c7c | 402 | |
coreyharris | 1:86843c27cc81 | 403 | //Enable interrupts register setting |
coreyharris | 1:86843c27cc81 | 404 | MAX30003::EnableInterrupts_u EN_INT_r; |
coreyharris | 5:f8d1f651bef5 | 405 | EN_INT_r.all = 0; |
coreyharris | 3:420d5efbd967 | 406 | EN_INT_r.bits.en_eint = 1; // Enable EINT interrupt |
coreyharris | 4:06e258ff0b97 | 407 | EN_INT_r.bits.en_rrint = 0; // Disable R-to-R interrupt |
coreyharris | 3:420d5efbd967 | 408 | EN_INT_r.bits.intb_type = 3; // Open-drain NMOS with internal pullup |
coreyharris | 1:86843c27cc81 | 409 | ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all); |
coreyharris | 1:86843c27cc81 | 410 | |
coreyharris | 1:86843c27cc81 | 411 | |
coreyharris | 1:86843c27cc81 | 412 | //Dyanmic modes config |
coreyharris | 1:86843c27cc81 | 413 | MAX30003::ManageDynamicModes_u MNG_DYN_r; |
coreyharris | 3:420d5efbd967 | 414 | MNG_DYN_r.bits.fast = 0; // Fast recovery mode disabled |
coreyharris | 1:86843c27cc81 | 415 | ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all); |
coreyharris | 5:f8d1f651bef5 | 416 | |
coreyharris | 5:f8d1f651bef5 | 417 | // MUX Config |
coreyharris | 5:f8d1f651bef5 | 418 | MAX30003::MuxConfiguration_u CNFG_MUX_r; |
coreyharris | 5:f8d1f651bef5 | 419 | CNFG_MUX_r.bits.openn = 0; // Connect ECGN to AFE channel |
coreyharris | 5:f8d1f651bef5 | 420 | CNFG_MUX_r.bits.openp = 0; // Connect ECGP to AFE channel |
coreyharris | 5:f8d1f651bef5 | 421 | ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all); |
coreyharris | 1:86843c27cc81 | 422 | |
coreyharris | 1:86843c27cc81 | 423 | return; |
coreyharris | 0:38c49bc37c7c | 424 | } |
coreyharris | 0:38c49bc37c7c | 425 |