Vaibhav Murali / Mbed OS HeartRate

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Dependencies:   FXOS8700 Hexi_KW40Z Hexi_OLED_SSD1351 MAX30101

Fork of HeartRate by Xi Han

main.cpp@2:9dfb7ebaaa6e, 2018-06-01 (annotated)

Committer:
xihan94
Date:
Fri Jun 01 19:09:47 2018 +0000
Revision:
2:9dfb7ebaaa6e
Parent:
1:ad1b075585bc 
Demo start;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
xihan94 0:33686dd26bf9 1 #include "mbed.h"
xihan94 0:33686dd26bf9 2 #include "mbed_events.h"
xihan94 0:33686dd26bf9 3 #include "MAX30101.h"
xihan94 0:33686dd26bf9 4
xihan94 0:33686dd26bf9 5 #define FIFO_DATA_MAX 288
xihan94 0:33686dd26bf9 6
xihan94 0:33686dd26bf9 7 DigitalOut pwr1v8(PTA29);
xihan94 1:ad1b075585bc 8 DigitalOut pwr3v3b(PTC13);
xihan94 1:ad1b075585bc 9 DigitalOut pwr15v(PTB12);
xihan94 0:33686dd26bf9 10 I2C i2c0(PTB1, PTB0);
xihan94 0:33686dd26bf9 11 InterruptIn maximInterrupt(PTB18);
xihan94 0:33686dd26bf9 12 Serial pc(USBTX, USBRX);
xihan94 0:33686dd26bf9 13
xihan94 0:33686dd26bf9 14 EventQueue evqueue(32 * EVENTS_EVENT_SIZE);
xihan94 0:33686dd26bf9 15 Thread t;
xihan94 0:33686dd26bf9 16
xihan94 0:33686dd26bf9 17 MAX30101 hr(i2c0);
xihan94 0:33686dd26bf9 18
xihan94 1:ad1b075585bc 19 int mask_ppg = 0;
xihan94 1:ad1b075585bc 20 uint32_t count = 0;
xihan94 0:33686dd26bf9 21 void interruptHandlerQueued() {
xihan94 0:33686dd26bf9 22
xihan94 0:33686dd26bf9 23 MAX30101::InterruptBitField_u interruptStatus;
xihan94 0:33686dd26bf9 24 hr.getInterruptStatus(interruptStatus);
xihan94 0:33686dd26bf9 25 printf("Interrupt Status: 0x%02x\r\n", interruptStatus.all);
xihan94 0:33686dd26bf9 26
xihan94 0:33686dd26bf9 27 if (interruptStatus.bits.pwr_rdy == 0x1) {
xihan94 0:33686dd26bf9 28 printf("Powered on\r\n");
xihan94 0:33686dd26bf9 29
xihan94 2:9dfb7ebaaa6e 30 // // Soft reset
xihan94 2:9dfb7ebaaa6e 31 // MAX30101::ModeConfiguration_u modeConf;
xihan94 2:9dfb7ebaaa6e 32 // modeConf.all = 0;
xihan94 2:9dfb7ebaaa6e 33 // modeConf.bits.reset = 1;
xihan94 2:9dfb7ebaaa6e 34 // hr.setModeConfiguration(modeConf);
xihan94 2:9dfb7ebaaa6e 35 // wait(0.01);
xihan94 2:9dfb7ebaaa6e 36 //
xihan94 2:9dfb7ebaaa6e 37 // // Configure FIFO
xihan94 2:9dfb7ebaaa6e 38 // MAX30101::FIFO_Configuration_u fifoConf;
xihan94 2:9dfb7ebaaa6e 39 // hr.getFIFOConfiguration(fifoConf);
xihan94 2:9dfb7ebaaa6e 40 // pc.printf("FIFO Configuration: 0x%02x\r\n", fifoConf.all);
xihan94 2:9dfb7ebaaa6e 41 //
xihan94 2:9dfb7ebaaa6e 42 // // Set LED power
xihan94 2:9dfb7ebaaa6e 43 // hr.setLEDPulseAmplitude(MAX30101::LED1_PA, 0x0C);
xihan94 2:9dfb7ebaaa6e 44 // hr.setLEDPulseAmplitude(MAX30101::ProxModeLED_PA, 0x19);
xihan94 2:9dfb7ebaaa6e 45 // pc.printf("LED set\r\n");
xihan94 2:9dfb7ebaaa6e 46 //
xihan94 2:9dfb7ebaaa6e 47 // MAX30101::SpO2Configuration_u spo2Conf;
xihan94 2:9dfb7ebaaa6e 48 // hr.getSpO2Configuration(spo2Conf);
xihan94 2:9dfb7ebaaa6e 49 // spo2Conf.bits.led_pw = MAX30101::PW_1;
xihan94 2:9dfb7ebaaa6e 50 // spo2Conf.bits.spo2_sr = MAX30101::SR_100_Hz;
xihan94 2:9dfb7ebaaa6e 51 // hr.setSpO2Configuration(spo2Conf);
xihan94 2:9dfb7ebaaa6e 52 // hr.getSpO2Configuration(spo2Conf);
xihan94 2:9dfb7ebaaa6e 53 // pc.printf("SpO2 Configuration: 0x%02x\r\n", spo2Conf.all);
xihan94 2:9dfb7ebaaa6e 54 //
xihan94 2:9dfb7ebaaa6e 55 // // Proximity settings
xihan94 2:9dfb7ebaaa6e 56 // hr.setProxIntThreshold(0x14);
xihan94 2:9dfb7ebaaa6e 57 //
xihan94 2:9dfb7ebaaa6e 58 // // Enable HR mode
xihan94 2:9dfb7ebaaa6e 59 // modeConf.all = 0;
xihan94 2:9dfb7ebaaa6e 60 // modeConf.bits.mode = MAX30101::HeartRateMode;
xihan94 2:9dfb7ebaaa6e 61 // hr.setModeConfiguration(modeConf);
xihan94 2:9dfb7ebaaa6e 62 // printf("Mode set\r\n");
xihan94 0:33686dd26bf9 63 }
xihan94 0:33686dd26bf9 64
xihan94 2:9dfb7ebaaa6e 65 // if (interruptStatus.bits.prox_int == 0x1) {
xihan94 2:9dfb7ebaaa6e 66 // printf("Proximity Triggered, entered HR Mode.");
xihan94 2:9dfb7ebaaa6e 67 // }
xihan94 2:9dfb7ebaaa6e 68 //
xihan94 2:9dfb7ebaaa6e 69 // if (interruptStatus.bits.ppg_rdy == 0x1) {
xihan94 2:9dfb7ebaaa6e 70 // printf("PPG Ready.\r\n");
xihan94 2:9dfb7ebaaa6e 71 // mask_ppg = 1;
xihan94 2:9dfb7ebaaa6e 72 // }
xihan94 2:9dfb7ebaaa6e 73 //
xihan94 2:9dfb7ebaaa6e 74 // if (interruptStatus.bits.a_full == 0x1) {
xihan94 2:9dfb7ebaaa6e 75 // printf("FIFO Almost Full.\r\n");
xihan94 2:9dfb7ebaaa6e 76 // uint8_t data[FIFO_DATA_MAX];
xihan94 2:9dfb7ebaaa6e 77 // uint16_t readBytes = 0;
xihan94 2:9dfb7ebaaa6e 78 // hr.readFIFO(MAX30101::OneLedChannel, data, readBytes);
xihan94 2:9dfb7ebaaa6e 79 //
xihan94 2:9dfb7ebaaa6e 80 // for (uint16_t i = 0; i < readBytes; i += 3) {
xihan94 2:9dfb7ebaaa6e 81 // uint8_t sample[4] = {0};
xihan94 2:9dfb7ebaaa6e 82 // sample[0] = data[i + 2];
xihan94 2:9dfb7ebaaa6e 83 // sample[1] = data[i + 1];
xihan94 2:9dfb7ebaaa6e 84 // sample[2] = data[i];
xihan94 2:9dfb7ebaaa6e 85 //
xihan94 2:9dfb7ebaaa6e 86 // printf("%u\r\n", *(uint32_t *) sample);
xihan94 2:9dfb7ebaaa6e 87 // }
xihan94 2:9dfb7ebaaa6e 88 // }
xihan94 2:9dfb7ebaaa6e 89 //
xihan94 2:9dfb7ebaaa6e 90 // interruptStatus.all = 0xFF;
xihan94 2:9dfb7ebaaa6e 91 // if (mask_ppg == 1) {
xihan94 2:9dfb7ebaaa6e 92 // interruptStatus.bits.ppg_rdy = 0;
xihan94 2:9dfb7ebaaa6e 93 // }
xihan94 2:9dfb7ebaaa6e 94 // hr.enableInterrupts(interruptStatus);
xihan94 0:33686dd26bf9 95 }
xihan94 0:33686dd26bf9 96
xihan94 0:33686dd26bf9 97 void interruptHandler() {
xihan94 0:33686dd26bf9 98 evqueue.call(interruptHandlerQueued);
xihan94 0:33686dd26bf9 99 }
xihan94 0:33686dd26bf9 100
xihan94 0:33686dd26bf9 101 // main() runs in its own thread in the OS
xihan94 0:33686dd26bf9 102 int main() {
xihan94 0:33686dd26bf9 103 printf("Hello world.\r\n");
xihan94 0:33686dd26bf9 104
xihan94 0:33686dd26bf9 105 t.start(callback(&evqueue, &EventQueue::dispatch_forever));
xihan94 0:33686dd26bf9 106
xihan94 0:33686dd26bf9 107 pwr1v8 = 1;
xihan94 0:33686dd26bf9 108 pwr3v3b = 1;
xihan94 1:ad1b075585bc 109 pwr15v = 0;
xihan94 0:33686dd26bf9 110
xihan94 0:33686dd26bf9 111 maximInterrupt.fall(interruptHandler);
xihan94 0:33686dd26bf9 112 maximInterrupt.enable_irq();
xihan94 0:33686dd26bf9 113
xihan94 0:33686dd26bf9 114 MAX30101::InterruptBitField_u interruptStatus;
xihan94 0:33686dd26bf9 115 interruptStatus.all = 0xFF;
xihan94 0:33686dd26bf9 116 hr.enableInterrupts(interruptStatus);
xihan94 0:33686dd26bf9 117
xihan94 0:33686dd26bf9 118 return 0;
xihan94 0:33686dd26bf9 119 }
xihan94 0:33686dd26bf9 120