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Dependencies: MAX30003 max32630fthr DS1307
main.cpp@9:24ecf16eab0f, 2020-08-19 (annotated)
- Committer:
- parthsagar2010
- Date:
- Wed Aug 19 19:38:17 2020 +0000
- Revision:
- 9:24ecf16eab0f
- Parent:
- 8:6b9359f81cc0
- Child:
- 10:54aa50490b15
Updated the code with 1 sec packets
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" |
parthsagar2010 | 9:24ecf16eab0f | 5 | #include "ds1307.h" |
parthsagar2010 | 8:6b9359f81cc0 | 6 | |
parthsagar2010 | 9:24ecf16eab0f | 7 | Timer timer_fast; |
coreyharris | 0:38c49bc37c7c | 8 | MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3); |
coreyharris | 0:38c49bc37c7c | 9 | |
parthsagar2010 | 9:24ecf16eab0f | 10 | void task_fast(void); |
parthsagar2010 | 9:24ecf16eab0f | 11 | DigitalOut ledA(LED2); |
coreyharris | 0:38c49bc37c7c | 12 | void ecg_config(MAX30003 &ecgAFE); |
coreyharris | 0:38c49bc37c7c | 13 | |
coreyharris | 0:38c49bc37c7c | 14 | volatile bool ecgFIFOIntFlag = 0; |
parthsagar2010 | 9:24ecf16eab0f | 15 | volatile int16_t onesec_counter = 0; |
parthsagar2010 | 9:24ecf16eab0f | 16 | volatile bool timerflag = 0; |
parthsagar2010 | 8:6b9359f81cc0 | 17 | void ecgFIFO_callback_1() { // Triggered when the ECG FIFO is about to be full |
coreyharris | 0:38c49bc37c7c | 18 | |
coreyharris | 0:38c49bc37c7c | 19 | ecgFIFOIntFlag = 1; |
coreyharris | 0:38c49bc37c7c | 20 | |
coreyharris | 0:38c49bc37c7c | 21 | } |
coreyharris | 0:38c49bc37c7c | 22 | |
coreyharris | 0:38c49bc37c7c | 23 | int main() |
coreyharris | 3:420d5efbd967 | 24 | { |
coreyharris | 6:86ac850c718d | 25 | |
coreyharris | 6:86ac850c718d | 26 | // Constants |
coreyharris | 4:06e258ff0b97 | 27 | const int EINT_STATUS_MASK = 1 << 23; |
coreyharris | 6:86ac850c718d | 28 | const int FIFO_OVF_MASK = 0x7; |
coreyharris | 6:86ac850c718d | 29 | const int FIFO_VALID_SAMPLE_MASK = 0x0; |
coreyharris | 6:86ac850c718d | 30 | const int FIFO_FAST_SAMPLE_MASK = 0x1; |
coreyharris | 6:86ac850c718d | 31 | const int ETAG_BITS_MASK = 0x7; |
parthsagar2010 | 9:24ecf16eab0f | 32 | timer_fast.start(); |
parthsagar2010 | 8:6b9359f81cc0 | 33 | DigitalOut rLed(LED1, LED_OFF); |
coreyharris | 3:420d5efbd967 | 34 | |
coreyharris | 1:86843c27cc81 | 35 | Serial pc(USBTX, USBRX); // Use USB debug probe for serial link |
coreyharris | 1:86843c27cc81 | 36 | pc.baud(115200); // Baud rate = 115200 |
coreyharris | 1:86843c27cc81 | 37 | |
coreyharris | 1:86843c27cc81 | 38 | InterruptIn ecgFIFO_int(P5_4); // Config P5_4 as int. in for the |
parthsagar2010 | 8:6b9359f81cc0 | 39 | ecgFIFO_int.fall(&ecgFIFO_callback_1); // ecg FIFO interrupt at falling edge |
coreyharris | 0:38c49bc37c7c | 40 | |
coreyharris | 1:86843c27cc81 | 41 | SPI spiBus(SPI2_MOSI, SPI2_MISO, SPI2_SCK); // SPI bus, P5_1 = MOSI, |
coreyharris | 1:86843c27cc81 | 42 | // P5_2 = MISO, P5_0 = SCK |
coreyharris | 0:38c49bc37c7c | 43 | |
coreyharris | 4:06e258ff0b97 | 44 | MAX30003 ecgAFE(spiBus, P5_3); // New MAX30003 on spiBus, CS = P5_3 |
parthsagar2010 | 8:6b9359f81cc0 | 45 | |
coreyharris | 4:06e258ff0b97 | 46 | ecg_config(ecgAFE); // Config ECG |
coreyharris | 1:86843c27cc81 | 47 | |
coreyharris | 0:38c49bc37c7c | 48 | |
coreyharris | 4:06e258ff0b97 | 49 | ecgAFE.writeRegister( MAX30003::SYNCH , 0); |
coreyharris | 0:38c49bc37c7c | 50 | |
coreyharris | 4:06e258ff0b97 | 51 | uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status; |
coreyharris | 1:86843c27cc81 | 52 | int16_t ecgSample[32]; |
parthsagar2010 | 9:24ecf16eab0f | 53 | //bool timerflag = false; |
parthsagar2010 | 9:24ecf16eab0f | 54 | int16_t ecgSample_1sec[700]; |
parthsagar2010 | 9:24ecf16eab0f | 55 | int16_t onesec_counter = 0; |
parthsagar2010 | 9:24ecf16eab0f | 56 | int16_t sample = 300; |
coreyharris | 2:812d40f1853d | 57 | |
parthsagar2010 | 9:24ecf16eab0f | 58 | while(1) |
parthsagar2010 | 9:24ecf16eab0f | 59 | { |
parthsagar2010 | 9:24ecf16eab0f | 60 | |
parthsagar2010 | 9:24ecf16eab0f | 61 | if (timer_fast.read() > 1) |
parthsagar2010 | 9:24ecf16eab0f | 62 | { |
parthsagar2010 | 9:24ecf16eab0f | 63 | //timerflag = 1; |
parthsagar2010 | 9:24ecf16eab0f | 64 | ledA = !ledA; |
parthsagar2010 | 9:24ecf16eab0f | 65 | timer_fast.reset(); |
parthsagar2010 | 9:24ecf16eab0f | 66 | int8_t header_device_id[3] = {0,0,210}; |
parthsagar2010 | 9:24ecf16eab0f | 67 | int8_t header_packet_type[2] = {0,2}; |
parthsagar2010 | 9:24ecf16eab0f | 68 | int8_t header_packet_id[4] = {0,0,0,0}; |
parthsagar2010 | 9:24ecf16eab0f | 69 | int8_t header_ecg_datalen[2] = {0,onesec_counter}; |
parthsagar2010 | 9:24ecf16eab0f | 70 | int8_t header_ecg_checksum[2] = {0,0}; |
parthsagar2010 | 9:24ecf16eab0f | 71 | |
parthsagar2010 | 9:24ecf16eab0f | 72 | |
parthsagar2010 | 9:24ecf16eab0f | 73 | //pc.printf("%6d\r\n", sample); |
parthsagar2010 | 9:24ecf16eab0f | 74 | //pc.printf("%6d\r\n", onesec_counter); |
parthsagar2010 | 9:24ecf16eab0f | 75 | |
parthsagar2010 | 9:24ecf16eab0f | 76 | onesec_counter = 0; |
parthsagar2010 | 9:24ecf16eab0f | 77 | } |
coreyharris | 4:06e258ff0b97 | 78 | // Read back ECG samples from the FIFO |
parthsagar2010 | 9:24ecf16eab0f | 79 | else if( (ecgFIFOIntFlag==1))// && (timerflag == 0)) |
parthsagar2010 | 9:24ecf16eab0f | 80 | { |
coreyharris | 2:812d40f1853d | 81 | |
coreyharris | 5:f8d1f651bef5 | 82 | ecgFIFOIntFlag = 0; |
coreyharris | 4:06e258ff0b97 | 83 | status = ecgAFE.readRegister( MAX30003::STATUS ); // Read the STATUS register |
coreyharris | 2:812d40f1853d | 84 | |
coreyharris | 3:420d5efbd967 | 85 | // Check if EINT interrupt asserted |
parthsagar2010 | 9:24ecf16eab0f | 86 | if ( ( status & EINT_STATUS_MASK ) == EINT_STATUS_MASK ) |
parthsagar2010 | 9:24ecf16eab0f | 87 | { |
coreyharris | 3:420d5efbd967 | 88 | |
coreyharris | 4:06e258ff0b97 | 89 | readECGSamples = 0; // Reset sample counter |
coreyharris | 3:420d5efbd967 | 90 | |
coreyharris | 2:812d40f1853d | 91 | do { |
coreyharris | 6:86ac850c718d | 92 | ecgFIFO = ecgAFE.readRegister( MAX30003::ECG_FIFO ); // Read FIFO |
coreyharris | 4:06e258ff0b97 | 93 | ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data |
coreyharris | 6:86ac850c718d | 94 | ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS_MASK; // Isolate ETAG |
coreyharris | 4:06e258ff0b97 | 95 | readECGSamples++; // Increment sample counter |
coreyharris | 3:420d5efbd967 | 96 | |
coreyharris | 3:420d5efbd967 | 97 | // Check that sample is not last sample in FIFO |
coreyharris | 6:86ac850c718d | 98 | } while ( ETAG[readECGSamples-1] == FIFO_VALID_SAMPLE_MASK || |
coreyharris | 6:86ac850c718d | 99 | ETAG[readECGSamples-1] == FIFO_FAST_SAMPLE_MASK ); |
coreyharris | 2:812d40f1853d | 100 | |
coreyharris | 3:420d5efbd967 | 101 | // Check if FIFO has overflowed |
parthsagar2010 | 9:24ecf16eab0f | 102 | if( ETAG[readECGSamples - 1] == FIFO_OVF_MASK ) |
parthsagar2010 | 9:24ecf16eab0f | 103 | { |
coreyharris | 3:420d5efbd967 | 104 | ecgAFE.writeRegister( MAX30003::FIFO_RST , 0); // Reset FIFO |
johnGreeneMaxim | 7:cf0855a0450a | 105 | rLed = 1;//notifies the user that an over flow occured |
coreyharris | 3:420d5efbd967 | 106 | } |
coreyharris | 3:420d5efbd967 | 107 | |
coreyharris | 4:06e258ff0b97 | 108 | // Print results |
parthsagar2010 | 9:24ecf16eab0f | 109 | for( idx = 0; idx < readECGSamples; idx++ ) |
parthsagar2010 | 9:24ecf16eab0f | 110 | { |
parthsagar2010 | 9:24ecf16eab0f | 111 | //pc.printf("%6d\r\n", ecgSample[idx]); |
parthsagar2010 | 9:24ecf16eab0f | 112 | ecgSample_1sec[onesec_counter] = ecgSample[idx]; |
parthsagar2010 | 9:24ecf16eab0f | 113 | onesec_counter++; |
coreyharris | 6:86ac850c718d | 114 | } |
coreyharris | 6:86ac850c718d | 115 | |
coreyharris | 0:38c49bc37c7c | 116 | } |
parthsagar2010 | 9:24ecf16eab0f | 117 | // else |
parthsagar2010 | 9:24ecf16eab0f | 118 | // { |
parthsagar2010 | 9:24ecf16eab0f | 119 | // timerflag = 0; |
parthsagar2010 | 9:24ecf16eab0f | 120 | // } |
parthsagar2010 | 9:24ecf16eab0f | 121 | //else if (timerflag == 1) |
parthsagar2010 | 9:24ecf16eab0f | 122 | //{ |
parthsagar2010 | 9:24ecf16eab0f | 123 | //timerflag = 0; |
parthsagar2010 | 9:24ecf16eab0f | 124 | //pc.printf("1 sec ends :\n"); |
parthsagar2010 | 9:24ecf16eab0f | 125 | //onesec_counter = 0; |
parthsagar2010 | 9:24ecf16eab0f | 126 | //timer_fast.reset(); |
parthsagar2010 | 9:24ecf16eab0f | 127 | //timer_fast.start(); |
parthsagar2010 | 9:24ecf16eab0f | 128 | //delete[] ecgSample_1sec; |
parthsagar2010 | 9:24ecf16eab0f | 129 | //} |
parthsagar2010 | 9:24ecf16eab0f | 130 | |
parthsagar2010 | 9:24ecf16eab0f | 131 | |
coreyharris | 0:38c49bc37c7c | 132 | } |
coreyharris | 0:38c49bc37c7c | 133 | } |
coreyharris | 0:38c49bc37c7c | 134 | } |
coreyharris | 0:38c49bc37c7c | 135 | |
coreyharris | 0:38c49bc37c7c | 136 | |
coreyharris | 0:38c49bc37c7c | 137 | |
coreyharris | 0:38c49bc37c7c | 138 | |
coreyharris | 0:38c49bc37c7c | 139 | void ecg_config(MAX30003& ecgAFE) { |
coreyharris | 0:38c49bc37c7c | 140 | |
coreyharris | 1:86843c27cc81 | 141 | // Reset ECG to clear registers |
coreyharris | 1:86843c27cc81 | 142 | ecgAFE.writeRegister( MAX30003::SW_RST , 0); |
coreyharris | 0:38c49bc37c7c | 143 | |
coreyharris | 1:86843c27cc81 | 144 | // General config register setting |
coreyharris | 1:86843c27cc81 | 145 | MAX30003::GeneralConfiguration_u CNFG_GEN_r; |
coreyharris | 3:420d5efbd967 | 146 | CNFG_GEN_r.bits.en_ecg = 1; // Enable ECG channel |
coreyharris | 3:420d5efbd967 | 147 | CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input |
coreyharris | 3:420d5efbd967 | 148 | CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input |
coreyharris | 3:420d5efbd967 | 149 | CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias |
coreyharris | 3:420d5efbd967 | 150 | CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA |
coreyharris | 3:420d5efbd967 | 151 | CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection |
coreyharris | 1:86843c27cc81 | 152 | ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all); |
coreyharris | 1:86843c27cc81 | 153 | |
coreyharris | 1:86843c27cc81 | 154 | |
coreyharris | 1:86843c27cc81 | 155 | // ECG Config register setting |
coreyharris | 1:86843c27cc81 | 156 | MAX30003::ECGConfiguration_u CNFG_ECG_r; |
coreyharris | 3:420d5efbd967 | 157 | CNFG_ECG_r.bits.dlpf = 1; // Digital LPF cutoff = 40Hz |
coreyharris | 3:420d5efbd967 | 158 | CNFG_ECG_r.bits.dhpf = 1; // Digital HPF cutoff = 0.5Hz |
coreyharris | 3:420d5efbd967 | 159 | CNFG_ECG_r.bits.gain = 3; // ECG gain = 160V/V |
coreyharris | 3:420d5efbd967 | 160 | CNFG_ECG_r.bits.rate = 2; // Sample rate = 128 sps |
coreyharris | 1:86843c27cc81 | 161 | ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all); |
coreyharris | 1:86843c27cc81 | 162 | |
coreyharris | 1:86843c27cc81 | 163 | |
coreyharris | 1:86843c27cc81 | 164 | //R-to-R configuration |
coreyharris | 1:86843c27cc81 | 165 | MAX30003::RtoR1Configuration_u CNFG_RTOR_r; |
coreyharris | 3:420d5efbd967 | 166 | CNFG_RTOR_r.bits.en_rtor = 1; // Enable R-to-R detection |
coreyharris | 1:86843c27cc81 | 167 | ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all); |
coreyharris | 1:86843c27cc81 | 168 | |
coreyharris | 1:86843c27cc81 | 169 | |
coreyharris | 1:86843c27cc81 | 170 | //Manage interrupts register setting |
coreyharris | 1:86843c27cc81 | 171 | MAX30003::ManageInterrupts_u MNG_INT_r; |
coreyharris | 3:420d5efbd967 | 172 | MNG_INT_r.bits.efit = 0b00011; // Assert EINT w/ 4 unread samples |
coreyharris | 3:420d5efbd967 | 173 | MNG_INT_r.bits.clr_rrint = 0b01; // Clear R-to-R on RTOR reg. read back |
coreyharris | 1:86843c27cc81 | 174 | ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all); |
coreyharris | 0:38c49bc37c7c | 175 | |
coreyharris | 0:38c49bc37c7c | 176 | |
coreyharris | 1:86843c27cc81 | 177 | //Enable interrupts register setting |
coreyharris | 1:86843c27cc81 | 178 | MAX30003::EnableInterrupts_u EN_INT_r; |
coreyharris | 5:f8d1f651bef5 | 179 | EN_INT_r.all = 0; |
coreyharris | 3:420d5efbd967 | 180 | EN_INT_r.bits.en_eint = 1; // Enable EINT interrupt |
coreyharris | 4:06e258ff0b97 | 181 | EN_INT_r.bits.en_rrint = 0; // Disable R-to-R interrupt |
coreyharris | 3:420d5efbd967 | 182 | EN_INT_r.bits.intb_type = 3; // Open-drain NMOS with internal pullup |
coreyharris | 1:86843c27cc81 | 183 | ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all); |
coreyharris | 1:86843c27cc81 | 184 | |
coreyharris | 1:86843c27cc81 | 185 | |
coreyharris | 1:86843c27cc81 | 186 | //Dyanmic modes config |
coreyharris | 1:86843c27cc81 | 187 | MAX30003::ManageDynamicModes_u MNG_DYN_r; |
coreyharris | 3:420d5efbd967 | 188 | MNG_DYN_r.bits.fast = 0; // Fast recovery mode disabled |
coreyharris | 1:86843c27cc81 | 189 | ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all); |
coreyharris | 5:f8d1f651bef5 | 190 | |
coreyharris | 5:f8d1f651bef5 | 191 | // MUX Config |
coreyharris | 5:f8d1f651bef5 | 192 | MAX30003::MuxConfiguration_u CNFG_MUX_r; |
coreyharris | 5:f8d1f651bef5 | 193 | CNFG_MUX_r.bits.openn = 0; // Connect ECGN to AFE channel |
coreyharris | 5:f8d1f651bef5 | 194 | CNFG_MUX_r.bits.openp = 0; // Connect ECGP to AFE channel |
coreyharris | 5:f8d1f651bef5 | 195 | ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all); |
coreyharris | 1:86843c27cc81 | 196 | |
coreyharris | 1:86843c27cc81 | 197 | return; |
coreyharris | 0:38c49bc37c7c | 198 | } |
coreyharris | 0:38c49bc37c7c | 199 |