Diff: main.cpp

Revision:

0:33686dd26bf9

Child:

1:ad1b075585bc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed May 30 10:40:47 2018 +0000
@@ -0,0 +1,119 @@
+#include "mbed.h"
+#include "mbed_events.h"
+#include "MAX30101.h"
+
+#define FIFO_DATA_MAX 288
+
+DigitalOut pwr1v8(PTA29);
+DigitalOut pwr3v3b(PTB12);
+I2C i2c0(PTB1, PTB0);
+InterruptIn maximInterrupt(PTB18);
+Serial pc(USBTX, USBRX);
+
+EventQueue evqueue(32 * EVENTS_EVENT_SIZE);
+Thread t;
+
+MAX30101 hr(i2c0);
+
+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");
+        
+        // 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, 0xFF);
+        pc.printf("LED set\r\n");
+        
+        MAX30101::SpO2Configuration_u spo2Conf;
+        hr.getSpO2Configuration(spo2Conf);
+        pc.printf("SpO2 Configuration: 0x%02x\r\n", spo2Conf.all);
+        
+        // Enable HR mode
+        MAX30101::ModeConfiguration_u modeConf;
+        modeConf.all = 0;
+        modeConf.bits.mode = MAX30101::HeartRateMode;
+        hr.setModeConfiguration(modeConf);
+        printf("Mode set\r\n");
+    }
+    
+    if (interruptStatus.bits.ppg_rdy == 0x1) {
+        printf("PPG Ready.\r\n");
+        maximInterrupt.disable_irq();
+        while (true) {
+            hr.getInterruptStatus(interruptStatus);
+            printf("Interrupt Status: 0x%02x\r\n", interruptStatus.all);
+            if (interruptStatus.bits.ppg_rdy == 0x1) {
+                uint8_t byte;
+                hr.readRegister(MAX30101::FIFO_DataRegister, byte);
+                printf("Read byte: %hhu\r\n", byte);
+                hr.readRegister(MAX30101::FIFO_DataRegister, byte);
+                printf("Read byte: %hhu\r\n", byte);
+                hr.readRegister(MAX30101::FIFO_DataRegister, byte);
+                printf("Read byte: %hhu\r\n", byte);
+            }
+        }
+    }
+    
+    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);
+//        printf("FIFO has %hu bytes of data\r\n", readBytes);
+//        
+//        for (uint16_t i = 0; i < readBytes; i += 3) {
+//            uint8_t sample[4] = {0};
+//            memcpy(sample, data + i, 3);
+//            printf("Read data: %u\r\n", *(uint32_t *) sample);
+//        }
+    }
+    
+    interruptStatus.all = 0xFF;
+    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;
+    
+    maximInterrupt.fall(interruptHandler);
+    maximInterrupt.enable_irq();
+    
+    MAX30101::InterruptBitField_u interruptStatus;
+    interruptStatus.all = 0xFF;
+    hr.enableInterrupts(interruptStatus);
+    
+//    MAX30101::FIFO_Configuration_u fifoConf;
+//    hr.getFIFOConfiguration(fifoConf);
+//    pc.printf("FIFO Configuration: 0x%02x\r\n", fifoConf.all);
+//    
+//    MAX30101::ModeConfiguration_u modeConf;
+//    hr.getModeConfiguration(modeConf);
+//    pc.printf("Mode Configuration: 0x%02x\r\n", modeConf.all);
+//    
+    
+//    while (true) {
+//        wait(1);
+//        printf("%d\r\n", maximInterrupt.read());    
+//    }
+    return 0;
+}
+