Radu-Adrian Marcu / Mbed OS SOFT253_GroupA_AssignmentRepo

3rd Repo, trying to figure this out.

Dependencies:   LPS25H hts221

Fork of SOFT253_Template_Weather_OS_54 by Stage-1 Students SoCEM

main.cpp@36:19d3f752f9c3, 2017-04-05 (annotated)

Committer:
FairyMental
Date:
Wed Apr 05 13:33:32 2017 +0000
Revision:
36:19d3f752f9c3
Parent:
35:484e384f9bf1
Child:
37:00775e368a71
Nick hasn't found a solution yet, implemented thread with a signal to do reading at a specified time.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
FairyMental 36:19d3f752f9c3 1
Jonathan Austin 0:2757d7abb7d9 2 #include "mbed.h"
martinsimpson 32:260a288be58f 3 #include "rtos.h"
FairyMental 34:09ed07f2acba 4 #include "string.h"
FairyMental 34:09ed07f2acba 5 #include <stdio.h>
FairyMental 34:09ed07f2acba 6 #include <ctype.h>
FairyMental 36:19d3f752f9c3 7 #include "hts221.h"
martinsimpson 32:260a288be58f 8 #include "LPS25H.h"
martinsimpson 32:260a288be58f 9
FairyMental 36:19d3f752f9c3 10 #define SIGNAL_doMeasure 1
FairyMental 36:19d3f752f9c3 11 #define SWITCH1_RELEASE 90
FairyMental 34:09ed07f2acba 12
FairyMental 34:09ed07f2acba 13 void thread1();
FairyMental 34:09ed07f2acba 14
martinsimpson 32:260a288be58f 15 DigitalOut myled(LED1);
martinsimpson 32:260a288be58f 16 I2C i2c2(I2C_SDA, I2C_SCL);
martinsimpson 32:260a288be58f 17 LPS25H barometer(i2c2, LPS25H_V_CHIP_ADDR);
FairyMental 34:09ed07f2acba 18 HTS221 measurer(I2C_SDA, I2C_SCL);
FairyMental 34:09ed07f2acba 19 DigitalIn onBoardSwitch(USER_BUTTON);
FairyMental 34:09ed07f2acba 20
martinsimpson 32:260a288be58f 21
FairyMental 34:09ed07f2acba 22 //Threads
FairyMental 34:09ed07f2acba 23 Thread *t1;
FairyMental 34:09ed07f2acba 24 Thread *t2;
FairyMental 34:09ed07f2acba 25 int count= 0;
FairyMental 34:09ed07f2acba 26 //Class type
FairyMental 34:09ed07f2acba 27 class Measure {
FairyMental 34:09ed07f2acba 28 public:
FairyMental 34:09ed07f2acba 29 float temperature;
FairyMental 34:09ed07f2acba 30 float humidity;
FairyMental 34:09ed07f2acba 31 float pressure;
FairyMental 34:09ed07f2acba 32
FairyMental 34:09ed07f2acba 33 //Constructor
FairyMental 34:09ed07f2acba 34 Measure(float f, float h, float p) {
FairyMental 34:09ed07f2acba 35 temperature = f;
FairyMental 34:09ed07f2acba 36 humidity = h;
FairyMental 34:09ed07f2acba 37 pressure = p;
FairyMental 34:09ed07f2acba 38 }
FairyMental 34:09ed07f2acba 39 };
FairyMental 34:09ed07f2acba 40
FairyMental 34:09ed07f2acba 41 //Mail queue
FairyMental 34:09ed07f2acba 42 Mail<Measure, 16> mail_box;
FairyMental 34:09ed07f2acba 43
FairyMental 34:09ed07f2acba 44
FairyMental 34:09ed07f2acba 45 // Call this on precise intervals
FairyMental 36:19d3f752f9c3 46 void DoMeasure() {
FairyMental 35:484e384f9bf1 47
FairyMental 36:19d3f752f9c3 48 while(true)
FairyMental 36:19d3f752f9c3 49 {
FairyMental 36:19d3f752f9c3 50 printf("Awaiting signal \r\n\r\n");
FairyMental 36:19d3f752f9c3 51 Thread::signal_wait(SIGNAL_doMeasure);
FairyMental 36:19d3f752f9c3 52 //Read sample - make a copy
FairyMental 36:19d3f752f9c3 53 float temperature = 0 , humidity = 0,pressure = 0;
FairyMental 34:09ed07f2acba 54
FairyMental 34:09ed07f2acba 55
FairyMental 34:09ed07f2acba 56
FairyMental 36:19d3f752f9c3 57 //Allocate a block from the memory pool
FairyMental 36:19d3f752f9c3 58 Measure *measure = mail_box.alloc();
FairyMental 36:19d3f752f9c3 59 if (measure == NULL)
FairyMental 36:19d3f752f9c3 60 {
FairyMental 36:19d3f752f9c3 61 //Out of memory
FairyMental 36:19d3f752f9c3 62 printf("Out of memory\n\r");
FairyMental 36:19d3f752f9c3 63 return;
FairyMental 36:19d3f752f9c3 64 }
FairyMental 34:09ed07f2acba 65
FairyMental 36:19d3f752f9c3 66 //Fill in the data
FairyMental 36:19d3f752f9c3 67 measurer.ReadTempHumi(&temperature,&humidity);
FairyMental 36:19d3f752f9c3 68 barometer.get();
FairyMental 36:19d3f752f9c3 69 pressure = barometer.pressure();
FairyMental 36:19d3f752f9c3 70
FairyMental 34:09ed07f2acba 71
FairyMental 36:19d3f752f9c3 72 measure->temperature = temperature;
FairyMental 36:19d3f752f9c3 73 measure->humidity = humidity;
FairyMental 36:19d3f752f9c3 74 measure->pressure = pressure;
FairyMental 36:19d3f752f9c3 75
FairyMental 36:19d3f752f9c3 76 //Write to queue
FairyMental 36:19d3f752f9c3 77 osStatus stat = mail_box.put(measure); //Note we are sending the "pointer"
martinsimpson 32:260a288be58f 78
FairyMental 36:19d3f752f9c3 79 //Check if succesful
FairyMental 36:19d3f752f9c3 80 if (stat == osErrorResource) {
FairyMental 36:19d3f752f9c3 81 printf("queue->put() Error code: %4Xh, Resource not available\r\n", stat);
FairyMental 36:19d3f752f9c3 82 mail_box.free(measure);
FairyMental 36:19d3f752f9c3 83 return;
FairyMental 36:19d3f752f9c3 84 }
FairyMental 34:09ed07f2acba 85 }
FairyMental 34:09ed07f2acba 86 }
FairyMental 34:09ed07f2acba 87
FairyMental 34:09ed07f2acba 88 //Normal priority thread (consumer)
FairyMental 34:09ed07f2acba 89 void thread1()
FairyMental 34:09ed07f2acba 90 {
FairyMental 34:09ed07f2acba 91 while (true) {
FairyMental 34:09ed07f2acba 92 //Block on the queue
FairyMental 34:09ed07f2acba 93 osEvent evt = mail_box.get();
FairyMental 34:09ed07f2acba 94
FairyMental 34:09ed07f2acba 95 //Check status
FairyMental 34:09ed07f2acba 96 if (evt.status == osEventMail) {
FairyMental 34:09ed07f2acba 97 Measure *measure = (Measure*)evt.value.p; //This is the pointer (address)
FairyMental 34:09ed07f2acba 98 //Make a copy
FairyMental 34:09ed07f2acba 99 printf("Consumer: %fC | %f% % | %f \r\n", measure->temperature, measure->humidity,measure->pressure);
FairyMental 34:09ed07f2acba 100 Measure msr(measure->temperature, measure->humidity,measure->pressure);
FairyMental 34:09ed07f2acba 101 //We are done with this, so give back the memory to the pool
FairyMental 34:09ed07f2acba 102 mail_box.free(measure);
FairyMental 34:09ed07f2acba 103
FairyMental 34:09ed07f2acba 104 //Echo to the terminal
FairyMental 34:09ed07f2acba 105
FairyMental 34:09ed07f2acba 106 } else {
FairyMental 34:09ed07f2acba 107 printf("ERROR: %x\n\r", evt.status);
FairyMental 34:09ed07f2acba 108 }
FairyMental 34:09ed07f2acba 109
FairyMental 34:09ed07f2acba 110 } //end while
FairyMental 34:09ed07f2acba 111 }
FairyMental 36:19d3f752f9c3 112 void SendSignalDoMeasure()
FairyMental 36:19d3f752f9c3 113 {
FairyMental 36:19d3f752f9c3 114 t2->signal_set(SIGNAL_doMeasure);
FairyMental 36:19d3f752f9c3 115 }
FairyMental 34:09ed07f2acba 116
FairyMental 34:09ed07f2acba 117 // Main thread
FairyMental 34:09ed07f2acba 118 int main() {
FairyMental 34:09ed07f2acba 119
FairyMental 34:09ed07f2acba 120 measurer.init();
FairyMental 34:09ed07f2acba 121 measurer.calib();
FairyMental 34:09ed07f2acba 122 //Start message
FairyMental 34:09ed07f2acba 123 printf("Welcome\n");
FairyMental 34:09ed07f2acba 124
FairyMental 34:09ed07f2acba 125 //Hook up timer interrupt
FairyMental 36:19d3f752f9c3 126 Ticker timer;
FairyMental 36:19d3f752f9c3 127 timer.attach(&SendSignalDoMeasure, 5.0);
FairyMental 34:09ed07f2acba 128
FairyMental 34:09ed07f2acba 129 //Threads
FairyMental 34:09ed07f2acba 130 t1 = new Thread();
FairyMental 34:09ed07f2acba 131 t1->start(thread1);
FairyMental 34:09ed07f2acba 132 t2 = new Thread();
FairyMental 36:19d3f752f9c3 133 t2->start(DoMeasure);
FairyMental 34:09ed07f2acba 134
FairyMental 34:09ed07f2acba 135 printf("Main Thread\n");
FairyMental 34:09ed07f2acba 136 while(1)
martinsimpson 32:260a288be58f 137 {
FairyMental 35:484e384f9bf1 138 Thread::wait(3000);
FairyMental 34:09ed07f2acba 139 float temp,humi;
FairyMental 34:09ed07f2acba 140 measurer.ReadTempHumi(&temp, &humi);
FairyMental 34:09ed07f2acba 141 barometer.get();
FairyMental 36:19d3f752f9c3 142 // t2->signal_set(SIGNAL_doMeasure);
FairyMental 36:19d3f752f9c3 143 printf("Main Thread Measures: %fC %f %f \r\n", temp, humi,barometer.pressure());
FairyMental 34:09ed07f2acba 144
martinsimpson 32:260a288be58f 145 }
Jonathan Austin 0:2757d7abb7d9 146 }
FairyMental 34:09ed07f2acba 147