dsdaf
Dependencies: FXOS8700 Hexi_KW40Z Hexi_OLED_SSD1351 MAX30101
Fork of HeartRate by
main.cpp
- Committer:
- xihan94
- Date:
- 2018-06-01
- Revision:
- 3:2e12e0cd1f26
- Parent:
- 1:ad1b075585bc
- Child:
- 4:eb89733b8642
File content as of revision 3:2e12e0cd1f26:
#include "mbed.h" #include "mbed_events.h" #include "MAX30101.h" #define FIFO_DATA_MAX 288 DigitalOut pwr1v8(PTA29); DigitalOut pwr3v3b(PTC13); DigitalOut pwr15v(PTB12); I2C i2c0(PTB1, PTB0); InterruptIn maximInterrupt(PTB18); Serial pc(USBTX, USBRX); EventQueue evqueue(32 * EVENTS_EVENT_SIZE); Thread t; MAX30101 hr(i2c0); int mask_ppg = 0; uint32_t count = 0; void interruptHandlerQueued() { MAX30101::InterruptBitField_u interruptStatus; hr.getInterruptStatus(interruptStatus); // printf("Interrupt Status: 0x%02x\r\n", interruptStatus.all); if (interruptStatus.bits.pwr_rdy == 0x1) { // printf("Powered on\r\n"); // Soft reset MAX30101::ModeConfiguration_u modeConf; modeConf.all = 0; modeConf.bits.reset = 1; hr.setModeConfiguration(modeConf); wait(0.01); // Configure FIFO MAX30101::FIFO_Configuration_u fifoConf; hr.getFIFOConfiguration(fifoConf); // pc.printf("FIFO Configuration: 0x%02x\r\n", fifoConf.all); // Set LED power hr.setLEDPulseAmplitude(MAX30101::LED1_PA, 0x0C); hr.setLEDPulseAmplitude(MAX30101::ProxModeLED_PA, 0x19); // pc.printf("LED set\r\n"); MAX30101::SpO2Configuration_u spo2Conf; hr.getSpO2Configuration(spo2Conf); spo2Conf.bits.led_pw = MAX30101::PW_1; spo2Conf.bits.spo2_sr = MAX30101::SR_100_Hz; hr.setSpO2Configuration(spo2Conf); hr.getSpO2Configuration(spo2Conf); // pc.printf("SpO2 Configuration: 0x%02x\r\n", spo2Conf.all); // Proximity settings hr.setProxIntThreshold(0x14); // Enable HR mode modeConf.all = 0; modeConf.bits.mode = MAX30101::HeartRateMode; hr.setModeConfiguration(modeConf); // printf("Mode set\r\n"); } if (interruptStatus.bits.prox_int == 0x1) { // printf("Proximity Triggered, entered HR Mode."); } if (interruptStatus.bits.ppg_rdy == 0x1) { // printf("PPG Ready.\r\n"); mask_ppg = 1; } if (interruptStatus.bits.a_full == 0x1) { // printf("FIFO Almost Full.\r\n"); uint8_t data[FIFO_DATA_MAX]; uint16_t readBytes = 0; hr.readFIFO(MAX30101::OneLedChannel, data, readBytes); for (uint16_t i = 0; i < readBytes; i += 3) { uint8_t sample[4] = {0}; sample[0] = data[i + 2]; sample[1] = data[i + 1]; sample[2] = data[i]; printf("%u\r\n", *(uint32_t *) sample); } } interruptStatus.all = 0xFF; if (mask_ppg == 1) { interruptStatus.bits.ppg_rdy = 0; } hr.enableInterrupts(interruptStatus); } void interruptHandler() { evqueue.call(interruptHandlerQueued); } // main() runs in its own thread in the OS int main() { // printf("Hello world.\r\n"); t.start(callback(&evqueue, &EventQueue::dispatch_forever)); pwr1v8 = 1; pwr3v3b = 1; pwr15v = 0; maximInterrupt.fall(interruptHandler); maximInterrupt.enable_irq(); MAX30101::InterruptBitField_u interruptStatus; interruptStatus.all = 0xFF; hr.enableInterrupts(interruptStatus); return 0; }