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@0:33686dd26bf9, 2018-05-30 (annotated)

Committer:
xihan94
Date:
Wed May 30 10:40:47 2018 +0000
Revision:
0:33686dd26bf9
Child:
1:ad1b075585bc
dev

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