![](/media/cache/group/default_image.jpg.50x50_q85.jpg)
Test2
Dependencies: MAX30003 max32630fthr DS1307
main.cpp
- Committer:
- parthsagar2010
- Date:
- 2020-09-29
- Revision:
- 12:10b49ad3c492
- Parent:
- 11:300afaf2696b
- Child:
- 13:0e7bbc06083f
File content as of revision 12:10b49ad3c492:
#include "MAX30003.h" #include "mbed.h" #include "max32630fthr.h" #include "ds1307.h" //#include <BufferedSerial.h> #include <string> //#include <Serial.h> #define TARGET_TX_PIN P3_1 #define TARGET_RX_PIN P3_0 Timer timer_fast; Timer t; MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3); void task_fast(void); DigitalOut ledA(LED2); void ecg_config(MAX30003 &ecgAFE); //BufferedSerial pc(P3_1,P3_0); // Use USB debug probe for serial link static Unbuffered static BufferedSerial pc(TARGET_TX_PIN, TARGET_RX_PIN, 9600); //Serial uart_1(USBTX, USBRX); // Use USB debug probe for serial link static Unbuffered // //Serial pc(P3_1,P3_0); volatile bool ecgFIFOIntFlag = 0; volatile bool timerflag = 0; FileHandle *mbed::mbed_override_console(int fd) { return &pc; } void ecgFIFO_callback_1() { // Triggered when the ECG FIFO is about to be full ecgFIFOIntFlag = 1; } time_t asUnixTime(int year, int mon, int mday, int hour, int min, int sec) { struct tm t; t.tm_year = year - 1900; t.tm_mon = mon - 1; // convert to 0 based month t.tm_mday = mday; t.tm_hour = hour; t.tm_min = min; t.tm_sec = sec; t.tm_isdst = -1; // Is Daylight saving time on? 1 = yes, 0 = no, -1 = unknown return mktime(&t); // returns seconds elapsed since January 1, 1970 (begin of the Epoch) } int main(void) { // Constants const int EINT_STATUS_MASK = 1 << 23; const int FIFO_OVF_MASK = 0x7; const int FIFO_VALID_SAMPLE_MASK = 0x0; const int FIFO_FAST_SAMPLE_MASK = 0x1; const int ETAG_BITS_MASK = 0x7; timer_fast.start(); DigitalOut rLed(LED1, LED_OFF); // pc.baud(9600); //pc.set_baud(115200); // Baud rate = 115200 //pc.set_format( // /* bits */ 8, // /* parity */ BufferedSerial::None, // /* stop bit */ 1 //1 //); //uart_1.baud(115200); InterruptIn ecgFIFO_int(P5_4); // Config P5_4 as int. in for the ecgFIFO_int.fall(&ecgFIFO_callback_1); // ecg FIFO interrupt at falling edge SPI spiBus(SPI2_MOSI, SPI2_MISO, SPI2_SCK); // SPI bus, P5_1 = MOSI, // P5_2 = MISO, P5_0 = SCK MAX30003 ecgAFE(spiBus, P5_3); // New MAX30003 on spiBus, CS = P5_3 ecg_config(ecgAFE); // Config ECG ecgAFE.writeRegister( MAX30003::SYNCH , 0); uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status; int16_t ecgSample[32]; //bool timerflag = false; int16_t ecgSample_1sec[200]; uint8_t ecg_1 = 0; uint8_t ecg_2 = 0; uint16_t onesec_counter = 0; uint16_t onesec_counter_temp = 0; int16_t sample = 300; uint8_t final[10]; uint16_t checksum_ = 0; uint16_t mod_checksum = 0; uint8_t p_1 = 0; uint8_t p_2 = 0; uint8_t p_3 = 0; uint8_t p_4 = 0; uint8_t data_len_1 = 0; uint8_t data_len_2 = 0; uint32_t packet_1 = 0; uint8_t cksm_1 = 0; uint8_t cksm_2 = 0; uint8_t header_device_id[3] = {0,0,210}; uint8_t header_packet_type[2] = {0,2}; uint8_t ending[5] = {'@','#','%','!','7'}; char buf[20]; pc.write("Welcome",8*sizeof(char)); printf("In the main loop"); bool flag_first = false; int counter_reader = 0; do { if (pc.readable()) { scanf("%s",buf); printf("The entered string is %s : \n ",buf); packet_1 = atoi(buf); set_time(packet_1); counter_reader++; //flag_first = true; } }while (counter_reader<=3); // take the third timestamp while(1) { if (timer_fast.read() >= 0.95) { //t.start(); //ledA = !ledA; pc.write((uint8_t *)header_device_id, sizeof(header_device_id)); pc.write((uint8_t *)header_packet_type, sizeof(header_packet_type)); time_t seconds = time(NULL); packet_1 = seconds; //packet_1 ++; //printf("Time as seconds since January 1, 1970 = %d\n", packet_1); p_1 = packet_1 & 0xff; p_2 = (packet_1 >> 8) & 0xff; p_3 = (packet_1 >> 16) & 0xff; p_4 = (packet_1 >> 24) & 0xff; // checksum_ = checksum_ + (packet_1 & 0xffff) + ((packet_1 >> 16) & 0xffff) ; checksum_ = checksum_ + p_1 + p_2 + p_3 + p_4 ; uint8_t header_packet_id[4] = {p_4,p_3,p_2,p_1}; pc.write((uint8_t *)header_packet_id, sizeof(header_packet_id)); onesec_counter_temp = onesec_counter * 2; data_len_1 = onesec_counter_temp & 0xff; data_len_2 = (onesec_counter_temp >> 8) & 0xff; checksum_ = checksum_ + data_len_1 + data_len_2; //pc.write((uint32_t *)packet_1, sizeof(packet_1)); uint8_t header_ecg_datalen[2] = {data_len_2,data_len_1}; pc.write((uint8_t *)header_ecg_datalen, sizeof(header_ecg_datalen)); mod_checksum = checksum_ % 65536 ; cksm_1 = mod_checksum & 0xff; cksm_2 = (mod_checksum >> 8) & 0xff; uint8_t header_ecg_checksum[2] = {cksm_2,cksm_1}; pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum)); pc.write((int16_t *)ecgSample_1sec,onesec_counter * sizeof(int16_t)); onesec_counter = 0; // memset(ecgSample_1sec, 0, sizeof(ecgSample_1sec)); pc.write((uint8_t *)ending, sizeof(ending)); checksum_ = 0; // t.stop(); // auto us = t.elapsed_time().count(); // printf("Timer time: %llu ms \n", us); timer_fast.reset(); } // Read back ECG samples from the FIFO else if( (ecgFIFOIntFlag==1))// && (timerflag == 0)) { ecgFIFOIntFlag = 0; status = ecgAFE.readRegister( MAX30003::STATUS ); // Read the STATUS register // Check if EINT interrupt asserted if ( ( status & EINT_STATUS_MASK ) == EINT_STATUS_MASK ) { readECGSamples = 0; // Reset sample counter do { ecgFIFO = ecgAFE.readRegister( MAX30003::ECG_FIFO ); // Read FIFO ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data ecgSample[readECGSamples] = ((ecgSample[readECGSamples]<<8)&0xFF00)|((ecgSample[readECGSamples]>>8)&0x00FF); ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS_MASK; // Isolate ETAG readECGSamples++; // Increment sample counter // Check that sample is not last sample in FIFO } while ( ETAG[readECGSamples-1] == FIFO_VALID_SAMPLE_MASK || ETAG[readECGSamples-1] == FIFO_FAST_SAMPLE_MASK ); // Check if FIFO has overflowed if( ETAG[readECGSamples - 1] == FIFO_OVF_MASK ) { ecgAFE.writeRegister( MAX30003::FIFO_RST , 0); // Reset FIFO rLed = 1;//notifies the user that an over flow occured } //uint8_t header_ecg_checksum[2] = {'%','%'}; //pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum)); //pc.write((int16_t *)ecgSample,readECGSamples * sizeof(int16_t )); //memcpy(ecgSample_1sec , ecgSample, sizeof(ecgSample)); //memcpy(ecgSample_1sec + (onesec_counter * sizeof(int16_t)), ecgSample, sizeof(ecgSample)); for( idx = 0; idx < readECGSamples; idx++ ) { //pc.printf("%6d\r\n", ecgSample[idx]); ecgSample_1sec[onesec_counter] = ecgSample[idx]; cksm_1 = ecgSample[idx] & 0xff; cksm_2 = (ecgSample[idx] >> 8) & 0xff; checksum_ += cksm_1 + cksm_2; onesec_counter++; } } } } } void ecg_config(MAX30003& ecgAFE) { // Reset ECG to clear registers ecgAFE.writeRegister( MAX30003::SW_RST , 0); // General config register setting MAX30003::GeneralConfiguration_u CNFG_GEN_r; CNFG_GEN_r.bits.en_ecg = 1; // Enable ECG channel CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection //CNFG_GEN_r.bits.fmstr = 1; //125 sps FMSTR 1 ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all); // ECG Config register setting MAX30003::ECGConfiguration_u CNFG_ECG_r; CNFG_ECG_r.bits.dlpf = 1; // Digital LPF cutoff = 40Hz CNFG_ECG_r.bits.dhpf = 1; // Digital HPF cutoff = 0.5Hz CNFG_ECG_r.bits.gain = 3; // ECG gain = 160V/V CNFG_ECG_r.bits.rate = 2; // Sample rate = 128 sps ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all); //R-to-R configuration MAX30003::RtoR1Configuration_u CNFG_RTOR_r; CNFG_RTOR_r.bits.en_rtor = 1; // Enable R-to-R detection ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all); //Manage interrupts register setting MAX30003::ManageInterrupts_u MNG_INT_r; MNG_INT_r.bits.efit = 0b00011; // Assert EINT w/ 4 unread samples MNG_INT_r.bits.clr_rrint = 0b01; // Clear R-to-R on RTOR reg. read back ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all); //Enable interrupts register setting MAX30003::EnableInterrupts_u EN_INT_r; EN_INT_r.all = 0; EN_INT_r.bits.en_eint = 1; // Enable EINT interrupt EN_INT_r.bits.en_rrint = 0; // Disable R-to-R interrupt EN_INT_r.bits.intb_type = 3; // Open-drain NMOS with internal pullup ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all); //Dyanmic modes config MAX30003::ManageDynamicModes_u MNG_DYN_r; MNG_DYN_r.bits.fast = 0; // Fast recovery mode disabled ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all); // MUX Config MAX30003::MuxConfiguration_u CNFG_MUX_r; CNFG_MUX_r.bits.openn = 0; // Connect ECGN to AFE channel CNFG_MUX_r.bits.openp = 0; // Connect ECGP to AFE channel ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all); return; }