Steven Kay / Mbed 2 deprecated Embedded_Software_Assignment_2

Example software for a Cyclic Executive

Dependencies:   MCP23017 SDFileSystem WattBob_TextLCD mbed

main.cpp@0:5989ac10c4d3, 2016-02-15 (annotated)

Committer:
sk398
Date:
Mon Feb 15 21:56:19 2016 +0000
Revision:
0:5989ac10c4d3
Child:
1:221d677fe0d3
All tasks implemented as classes and in a single file.; ; Task3 is fnished; All others are not

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sk398 0:5989ac10c4d3 1 #include "mbed.h"
sk398 0:5989ac10c4d3 2
sk398 0:5989ac10c4d3 3 #define WATCHDOG_PULSE_WIDTH 15
sk398 0:5989ac10c4d3 4
sk398 0:5989ac10c4d3 5 class Task1 // Square Wave Reader - read every second
sk398 0:5989ac10c4d3 6 {
sk398 0:5989ac10c4d3 7
sk398 0:5989ac10c4d3 8 public:
sk398 0:5989ac10c4d3 9 Task1::Task1(PinName squareWaveInPin)
sk398 0:5989ac10c4d3 10 {
sk398 0:5989ac10c4d3 11 Timer Task1Timer;
sk398 0:5989ac10c4d3 12 _squareWaveIn = new DigitalIn(squareWaveInPin);
sk398 0:5989ac10c4d3 13 }
sk398 0:5989ac10c4d3 14
sk398 0:5989ac10c4d3 15 int Task1::MeasureFreq()
sk398 0:5989ac10c4d3 16 {
sk398 0:5989ac10c4d3 17
sk398 0:5989ac10c4d3 18
sk398 0:5989ac10c4d3 19 }
sk398 0:5989ac10c4d3 20
sk398 0:5989ac10c4d3 21
sk398 0:5989ac10c4d3 22 private:
sk398 0:5989ac10c4d3 23
sk398 0:5989ac10c4d3 24 DigitalIn *_squareWaveIn;
sk398 0:5989ac10c4d3 25 };
sk398 0:5989ac10c4d3 26
sk398 0:5989ac10c4d3 27 class Task2 // Digital Input Reader - Read every 300ms
sk398 0:5989ac10c4d3 28 {
sk398 0:5989ac10c4d3 29 public:
sk398 0:5989ac10c4d3 30 Task2::Task2()
sk398 0:5989ac10c4d3 31 {
sk398 0:5989ac10c4d3 32
sk398 0:5989ac10c4d3 33 }
sk398 0:5989ac10c4d3 34
sk398 0:5989ac10c4d3 35 private:
sk398 0:5989ac10c4d3 36
sk398 0:5989ac10c4d3 37 };
sk398 0:5989ac10c4d3 38
sk398 0:5989ac10c4d3 39 class Task3 // Watchdog Pulse - output every 300ms
sk398 0:5989ac10c4d3 40 {
sk398 0:5989ac10c4d3 41 public:
sk398 0:5989ac10c4d3 42 Task3::Task3(WatchdogPin)
sk398 0:5989ac10c4d3 43 {
sk398 0:5989ac10c4d3 44 _Watchdog = new DigitalOut(WatchdogPin)
sk398 0:5989ac10c4d3 45 }
sk398 0:5989ac10c4d3 46
sk398 0:5989ac10c4d3 47 Task3::OutputWatchdogPulse()
sk398 0:5989ac10c4d3 48 {
sk398 0:5989ac10c4d3 49 _Watchdog -> write(HIGH);
sk398 0:5989ac10c4d3 50 wait_ms(WATCHDOG_PULSE_WIDTH);
sk398 0:5989ac10c4d3 51 _Watchdog -> wirte(LOW);
sk398 0:5989ac10c4d3 52 }
sk398 0:5989ac10c4d3 53
sk398 0:5989ac10c4d3 54 private:
sk398 0:5989ac10c4d3 55 DigitalOut *_Watchdog;
sk398 0:5989ac10c4d3 56
sk398 0:5989ac10c4d3 57 };
sk398 0:5989ac10c4d3 58
sk398 0:5989ac10c4d3 59 class Task4 // Read Analogue inputs - read every 400ms
sk398 0:5989ac10c4d3 60 {
sk398 0:5989ac10c4d3 61 public:
sk398 0:5989ac10c4d3 62 Task4::Task4()
sk398 0:5989ac10c4d3 63 {
sk398 0:5989ac10c4d3 64
sk398 0:5989ac10c4d3 65 }
sk398 0:5989ac10c4d3 66
sk398 0:5989ac10c4d3 67 private:
sk398 0:5989ac10c4d3 68
sk398 0:5989ac10c4d3 69 };
sk398 0:5989ac10c4d3 70
sk398 0:5989ac10c4d3 71 DigitalOut myled(LED1);
sk398 0:5989ac10c4d3 72
sk398 0:5989ac10c4d3 73 Task1 task1(p5); // Square wave Measurement
sk398 0:5989ac10c4d3 74
sk398 0:5989ac10c4d3 75 Task2 task3(p6); // Watchdog Pulse
sk398 0:5989ac10c4d3 76
sk398 0:5989ac10c4d3 77
sk398 0:5989ac10c4d3 78 int main() {
sk398 0:5989ac10c4d3 79 while(1) {
sk398 0:5989ac10c4d3 80 myled = 1;
sk398 0:5989ac10c4d3 81 wait(0.2);
sk398 0:5989ac10c4d3 82 myled = 0;
sk398 0:5989ac10c4d3 83 wait(0.2);
sk398 0:5989ac10c4d3 84 }
sk398 0:5989ac10c4d3 85 }