main.cpp

00001 /**
00002  *  @file       Main.cpp
00003  *  @brief      Send pulse waveform and pulse rate 
00004  *  @date       2014.08.08
00005  *  @version    1.0.0
00006  */
00007 #include "mbed.h"
00008 #include "USBSerial.h"
00009 #include "PulseRate.h"
00010 
00011 #define PACKET_HEADER (0xAA)
00012 #define PULSE_RATE_ID (0xBB)
00013 #define BYTE_MASK (0xFF)
00014 
00015 USBSerial serial;
00016 PulseRate pr(p20, LED1, p26); /* AD, LED, Beep */
00017 
00018 /** Send data packet
00019  *  @param      second_val  Byte data at packet address 0x01
00020  *  @param      data_val    Short data at packet address 0x02, 0x03
00021  */
00022 bool send_packet(int second_val, int data_val)
00023 {
00024     if(serial.writeable()) {
00025         serial.putc(PACKET_HEADER);
00026         serial.putc(second_val & BYTE_MASK);
00027         serial.putc((data_val >> 8 ) & BYTE_MASK);
00028         serial.putc(data_val & BYTE_MASK);
00029         return true;
00030     }
00031     else
00032     {
00033         return false;
00034     }
00035 }
00036 
00037 /** Main function
00038  */
00039 int main() {
00040     uint32_t num;
00041     int32_t wave;
00042     uint32_t rate;
00043     
00044     pr.start_sampling();    /* start procedure */
00045 
00046     while(1) {
00047         /* Pulse waveform */
00048         if(pr.get_wave(num, wave)) {
00049             send_packet(num, wave);
00050         }
00051         /* Pulse rate */
00052         if(pr.get_pr_val(rate)) {
00053             send_packet(PULSE_RATE_ID, rate);
00054         }
00055     }
00056 }