Mathew Swabey / Mbed OS ELEC350_Project2

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Dependencies:   serial_terminal sample_hardware PLL_Config SDCard BMP280 Networkbits TextLCD SDBlockDevice

main.cpp@18:3edfb9152b05, 2018-11-30 (annotated)

Committer:
Swabey89
Date:
Fri Nov 30 14:39:10 2018 +0000
Revision:
18:3edfb9152b05
Parent:
17:ead43c1b729d
Child:
19:88d8359306a4
pre-class

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Swabey89 7:e2bf2d703867 1 #include "mbed.h"
Swabey89 1:31c7b4ab552b 2 #include "sample_hardware.hpp"
Swabey89 1:31c7b4ab552b 3 #include "Networkbits.hpp"
Swabey89 5:956984cbe447 4 #include "serial_terminal.hpp"
Swabey89 6:a5394c9e5927 5 #include "SDCard.hpp"
Swabey89 5:956984cbe447 6 #include "rtos.h"
Swabey89 11:3ad0327e8c9f 7 #include "events/mbed_events.h"
Swabey89 8:c81b0ff8b822 8 #include "LCDdisplay.hpp"
Swabey89 5:956984cbe447 9
Swabey89 10:0fffc988d325 10 //Signals
Swabey89 8:c81b0ff8b822 11 #define TAKE_SAMPLE 1
Swabey89 10:0fffc988d325 12
Swabey89 17:ead43c1b729d 13 //Global variables
Swabey89 17:ead43c1b729d 14 float sample_rate = 15;
Swabey89 17:ead43c1b729d 15 FILE* fp;
Swabey89 17:ead43c1b729d 16 FATFileSystem* fs;
Swabey89 10:0fffc988d325 17
Swabey89 17:ead43c1b729d 18 //Shared mutable variables
Swabey89 17:ead43c1b729d 19 struct tm* timeData;
Swabey89 18:3edfb9152b05 20 char cmdBuffer[256];
Swabey89 17:ead43c1b729d 21 RawSerial* pc;
Swabey89 8:c81b0ff8b822 22
Swabey89 8:c81b0ff8b822 23 //Queues
Swabey89 11:3ad0327e8c9f 24 EventQueue SDqueue(32*EVENTS_EVENT_SIZE);
Swabey89 11:3ad0327e8c9f 25 EventQueue LCDqueue(32*EVENTS_EVENT_SIZE);
Swabey89 17:ead43c1b729d 26 EventQueue serialqueue(32*EVENTS_EVENT_SIZE);
Swabey89 1:31c7b4ab552b 27
Swabey89 1:31c7b4ab552b 28 //Threads
Swabey89 17:ead43c1b729d 29 Thread sample_thread(osPriorityHigh);
Swabey89 17:ead43c1b729d 30 Thread serialthread(osPriorityAboveNormal);
Swabey89 11:3ad0327e8c9f 31 Thread SDqueue_thread;
Swabey89 11:3ad0327e8c9f 32 Thread LCDqueue_thread;
Swabey89 0:4afd4940a189 33
Swabey89 17:ead43c1b729d 34 //Timers
Swabey89 8:c81b0ff8b822 35 Ticker sample;
Swabey89 10:0fffc988d325 36
Swabey89 17:ead43c1b729d 37 //Function prototypes
Swabey89 8:c81b0ff8b822 38 void sampleISR(void);
Swabey89 8:c81b0ff8b822 39 void takesample(void);
Swabey89 8:c81b0ff8b822 40 void samples(void);
Swabey89 11:3ad0327e8c9f 41 void serialISR(void);
Swabey89 11:3ad0327e8c9f 42 void serialiser(void);
Swabey89 11:3ad0327e8c9f 43
Swabey89 15:8af9672a6778 44 int main() {
Swabey89 17:ead43c1b729d 45 timeData = new tm;
Swabey89 11:3ad0327e8c9f 46 pc = new RawSerial(USBTX, USBRX);
Swabey89 8:c81b0ff8b822 47
Swabey89 18:3edfb9152b05 48 //Initialisations
Swabey89 17:ead43c1b729d 49 SDcard();
Swabey89 9:fa8a35d9d6c0 50
Swabey89 1:31c7b4ab552b 51 //Power on self test
Swabey89 1:31c7b4ab552b 52 post();
Swabey89 18:3edfb9152b05 53
Swabey89 18:3edfb9152b05 54 //Start threads
Swabey89 18:3edfb9152b05 55 SDqueue_thread.start(callback(&SDqueue, &EventQueue::dispatch_forever));
Swabey89 18:3edfb9152b05 56 LCDqueue_thread.start(callback(&LCDqueue, &EventQueue::dispatch_forever));
Swabey89 18:3edfb9152b05 57 serialthread.start(callback(&serialqueue, &EventQueue::dispatch_forever));
Swabey89 18:3edfb9152b05 58 sample_thread.start(samples);
Swabey89 3:b1583f309b43 59
Swabey89 18:3edfb9152b05 60 //Attach ISRs
Swabey89 18:3edfb9152b05 61 sample.attach(&sampleISR, sample_rate);
Swabey89 11:3ad0327e8c9f 62 pc->attach(serialISR, Serial::RxIrq);
Swabey89 15:8af9672a6778 63
Swabey89 1:31c7b4ab552b 64 //Flash to indicate goodness
Swabey89 1:31c7b4ab552b 65 while(true) {
Swabey89 5:956984cbe447 66 greenLED = !greenLED;
Swabey89 5:956984cbe447 67 Thread::wait(500);
Swabey89 0:4afd4940a189 68 }
Swabey89 0:4afd4940a189 69 }
Swabey89 1:31c7b4ab552b 70
Swabey89 8:c81b0ff8b822 71 void sampleISR()
Swabey89 8:c81b0ff8b822 72 {
Swabey89 8:c81b0ff8b822 73 sample_thread.signal_set(TAKE_SAMPLE);
Swabey89 8:c81b0ff8b822 74 }
Swabey89 8:c81b0ff8b822 75
Swabey89 8:c81b0ff8b822 76 void samples()
Swabey89 8:c81b0ff8b822 77 {
Swabey89 8:c81b0ff8b822 78 while(true)
Swabey89 8:c81b0ff8b822 79 {
Swabey89 8:c81b0ff8b822 80 //High priority thread
Swabey89 8:c81b0ff8b822 81 Thread::signal_wait(TAKE_SAMPLE);
Swabey89 8:c81b0ff8b822 82
Swabey89 11:3ad0327e8c9f 83 //needs to be a class at some point
Swabey89 12:3a54cbaa714c 84 //read time also
Swabey89 8:c81b0ff8b822 85 double temp = sensor.getTemperature();
Swabey89 8:c81b0ff8b822 86 double pressure = sensor.getPressure();
Swabey89 12:3a54cbaa714c 87 float light = adcIn.read();
Swabey89 8:c81b0ff8b822 88
Swabey89 8:c81b0ff8b822 89 //Pass onto queues
Swabey89 12:3a54cbaa714c 90 LCDqueue.call(LCD_display,temp,pressure,light);
Swabey89 8:c81b0ff8b822 91 SDqueue.call(SDaddSample,temp,pressure);
Swabey89 8:c81b0ff8b822 92 }
Swabey89 8:c81b0ff8b822 93 }
Swabey89 1:31c7b4ab552b 94
Swabey89 11:3ad0327e8c9f 95 void serialISR()
Swabey89 11:3ad0327e8c9f 96 {
Swabey89 11:3ad0327e8c9f 97 pc->attach(NULL, Serial::RxIrq);
Swabey89 11:3ad0327e8c9f 98 serialqueue.call(serialiser);
Swabey89 11:3ad0327e8c9f 99 }
Swabey89 1:31c7b4ab552b 100
Swabey89 11:3ad0327e8c9f 101 void serialiser()
Swabey89 12:3a54cbaa714c 102 {
Swabey89 17:ead43c1b729d 103 static int i = 0;
Swabey89 11:3ad0327e8c9f 104 if (pc->readable())
Swabey89 11:3ad0327e8c9f 105 {
Swabey89 18:3edfb9152b05 106 cmdBuffer[i] = pc->getc();
Swabey89 18:3edfb9152b05 107 if (cmdBuffer[i] == '\r')
Swabey89 11:3ad0327e8c9f 108 {
Swabey89 11:3ad0327e8c9f 109 i = 0;
Swabey89 18:3edfb9152b05 110 serialqueue.call(serialterm);
Swabey89 11:3ad0327e8c9f 111 }
Swabey89 11:3ad0327e8c9f 112 else i++;
Swabey89 11:3ad0327e8c9f 113 }
Swabey89 11:3ad0327e8c9f 114 pc->attach(serialISR, Serial::RxIrq);
Swabey89 11:3ad0327e8c9f 115 }