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updated for mbed os 5.4
Fork of Task641 by
main.cpp@1:4fb27aea76b2, 2016-03-08 (annotated)
- Committer:
- noutram
- Date:
- Tue Mar 08 12:26:28 2016 +0000
- Revision:
- 1:4fb27aea76b2
- Parent:
- 0:f916cefba2f4
- Child:
- 2:70084af839d3
Solution for 6.1.5
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
noutram | 0:f916cefba2f4 | 1 | #include "mbed.h" |
noutram | 0:f916cefba2f4 | 2 | #include "rtos.h" |
noutram | 0:f916cefba2f4 | 3 | |
noutram | 0:f916cefba2f4 | 4 | #define RED_DONE 1 |
noutram | 0:f916cefba2f4 | 5 | #define YELLOW_DONE 2 |
noutram | 0:f916cefba2f4 | 6 | |
noutram | 0:f916cefba2f4 | 7 | |
noutram | 0:f916cefba2f4 | 8 | //Function declarations |
noutram | 0:f916cefba2f4 | 9 | void countUP(void const *args); |
noutram | 0:f916cefba2f4 | 10 | void countDOWN(void const *args); |
noutram | 0:f916cefba2f4 | 11 | |
noutram | 0:f916cefba2f4 | 12 | //Digital outputs |
noutram | 0:f916cefba2f4 | 13 | DigitalOut onBoardLED(LED1); |
noutram | 0:f916cefba2f4 | 14 | DigitalOut redLED(D7); |
noutram | 0:f916cefba2f4 | 15 | DigitalOut yellowLED(D6); |
noutram | 0:f916cefba2f4 | 16 | DigitalOut greenLED(D5); |
noutram | 0:f916cefba2f4 | 17 | |
noutram | 0:f916cefba2f4 | 18 | //Digital inputs |
noutram | 0:f916cefba2f4 | 19 | DigitalIn onBoardSwitch(USER_BUTTON); |
noutram | 0:f916cefba2f4 | 20 | DigitalIn SW1(D4); |
noutram | 0:f916cefba2f4 | 21 | DigitalIn SW2(D3); |
noutram | 0:f916cefba2f4 | 22 | |
noutram | 1:4fb27aea76b2 | 23 | //MUTEX Lock |
noutram | 1:4fb27aea76b2 | 24 | Mutex *countLock; |
noutram | 0:f916cefba2f4 | 25 | |
noutram | 0:f916cefba2f4 | 26 | //Thread ID for the Main function (CMSIS API) |
noutram | 0:f916cefba2f4 | 27 | osThreadId tidMain; |
noutram | 0:f916cefba2f4 | 28 | |
noutram | 0:f916cefba2f4 | 29 | //Stared mutable state |
noutram | 0:f916cefba2f4 | 30 | volatile long long count = 0; |
noutram | 0:f916cefba2f4 | 31 | |
noutram | 0:f916cefba2f4 | 32 | //Threads |
noutram | 0:f916cefba2f4 | 33 | void countUP(void const *args) |
noutram | 0:f916cefba2f4 | 34 | { |
noutram | 0:f916cefba2f4 | 35 | redLED = 1; |
noutram | 0:f916cefba2f4 | 36 | |
noutram | 0:f916cefba2f4 | 37 | for (unsigned int n=0; n<10000; n++) { |
noutram | 1:4fb27aea76b2 | 38 | //Take lock |
noutram | 1:4fb27aea76b2 | 39 | countLock->lock(); |
noutram | 1:4fb27aea76b2 | 40 | |
noutram | 1:4fb27aea76b2 | 41 | //Critical section(s) |
noutram | 0:f916cefba2f4 | 42 | count++; |
noutram | 0:f916cefba2f4 | 43 | count++; |
noutram | 0:f916cefba2f4 | 44 | count++; |
noutram | 0:f916cefba2f4 | 45 | count++; |
noutram | 0:f916cefba2f4 | 46 | count++; |
noutram | 0:f916cefba2f4 | 47 | count++; |
noutram | 0:f916cefba2f4 | 48 | count++; |
noutram | 0:f916cefba2f4 | 49 | count++; |
noutram | 0:f916cefba2f4 | 50 | count++; |
noutram | 0:f916cefba2f4 | 51 | count++; |
noutram | 1:4fb27aea76b2 | 52 | |
noutram | 1:4fb27aea76b2 | 53 | //Release lock |
noutram | 1:4fb27aea76b2 | 54 | countLock->unlock(); |
noutram | 0:f916cefba2f4 | 55 | } |
noutram | 0:f916cefba2f4 | 56 | |
noutram | 0:f916cefba2f4 | 57 | redLED = 0; |
noutram | 0:f916cefba2f4 | 58 | osSignalSet(tidMain, RED_DONE); //Signal main thread we are done |
noutram | 0:f916cefba2f4 | 59 | } |
noutram | 0:f916cefba2f4 | 60 | |
noutram | 0:f916cefba2f4 | 61 | void countDOWN(void const *args) |
noutram | 0:f916cefba2f4 | 62 | { |
noutram | 0:f916cefba2f4 | 63 | yellowLED = 1; |
noutram | 0:f916cefba2f4 | 64 | |
noutram | 0:f916cefba2f4 | 65 | for (unsigned int n=0; n<10000; n++) { |
noutram | 1:4fb27aea76b2 | 66 | //Take lock |
noutram | 1:4fb27aea76b2 | 67 | countLock->lock(); |
noutram | 1:4fb27aea76b2 | 68 | |
noutram | 1:4fb27aea76b2 | 69 | //Critical section(s) |
noutram | 0:f916cefba2f4 | 70 | count--; |
noutram | 0:f916cefba2f4 | 71 | count--; |
noutram | 0:f916cefba2f4 | 72 | count--; |
noutram | 0:f916cefba2f4 | 73 | count--; |
noutram | 0:f916cefba2f4 | 74 | count--; |
noutram | 0:f916cefba2f4 | 75 | count--; |
noutram | 0:f916cefba2f4 | 76 | count--; |
noutram | 0:f916cefba2f4 | 77 | count--; |
noutram | 0:f916cefba2f4 | 78 | count--; |
noutram | 1:4fb27aea76b2 | 79 | count--; |
noutram | 1:4fb27aea76b2 | 80 | |
noutram | 1:4fb27aea76b2 | 81 | //Release lock |
noutram | 1:4fb27aea76b2 | 82 | countLock->unlock(); |
noutram | 0:f916cefba2f4 | 83 | } |
noutram | 0:f916cefba2f4 | 84 | |
noutram | 0:f916cefba2f4 | 85 | osSignalSet(tidMain, YELLOW_DONE); //Signal main thread we are done |
noutram | 0:f916cefba2f4 | 86 | yellowLED = 0; |
noutram | 0:f916cefba2f4 | 87 | } |
noutram | 0:f916cefba2f4 | 88 | |
noutram | 0:f916cefba2f4 | 89 | |
noutram | 0:f916cefba2f4 | 90 | //Main thread |
noutram | 0:f916cefba2f4 | 91 | int main() { |
noutram | 0:f916cefba2f4 | 92 | redLED = 0; |
noutram | 0:f916cefba2f4 | 93 | yellowLED = 0; |
noutram | 0:f916cefba2f4 | 94 | greenLED = 1; |
noutram | 0:f916cefba2f4 | 95 | |
noutram | 0:f916cefba2f4 | 96 | //Main thread ID |
noutram | 0:f916cefba2f4 | 97 | tidMain = Thread::gettid(); |
noutram | 0:f916cefba2f4 | 98 | |
noutram | 1:4fb27aea76b2 | 99 | //Create lock |
noutram | 1:4fb27aea76b2 | 100 | countLock = new Mutex(); |
noutram | 1:4fb27aea76b2 | 101 | |
noutram | 0:f916cefba2f4 | 102 | //Press the switch to run concurrently |
noutram | 0:f916cefba2f4 | 103 | if (onBoardSwitch == 1) { |
noutram | 0:f916cefba2f4 | 104 | printf("Running sequntially\n"); |
noutram | 0:f916cefba2f4 | 105 | countUP(NULL); |
noutram | 0:f916cefba2f4 | 106 | countDOWN(NULL); |
noutram | 0:f916cefba2f4 | 107 | } else { |
noutram | 0:f916cefba2f4 | 108 | printf("Running concurrently\n"); |
noutram | 0:f916cefba2f4 | 109 | Thread t1(countUP); |
noutram | 0:f916cefba2f4 | 110 | Thread t2(countDOWN); |
noutram | 0:f916cefba2f4 | 111 | |
noutram | 0:f916cefba2f4 | 112 | //Wait for the ALL_ON signal |
noutram | 0:f916cefba2f4 | 113 | Thread::signal_wait(RED_DONE,osWaitForever); |
noutram | 0:f916cefba2f4 | 114 | Thread::signal_wait(YELLOW_DONE,osWaitForever); |
noutram | 0:f916cefba2f4 | 115 | } |
noutram | 0:f916cefba2f4 | 116 | |
noutram | 0:f916cefba2f4 | 117 | printf("Final result = %lld\n", count); |
noutram | 0:f916cefba2f4 | 118 | if (count == 0) { |
noutram | 0:f916cefba2f4 | 119 | greenLED = 0; |
noutram | 0:f916cefba2f4 | 120 | } |
noutram | 1:4fb27aea76b2 | 121 | |
noutram | 1:4fb27aea76b2 | 122 | //Tidy |
noutram | 1:4fb27aea76b2 | 123 | delete countLock; |
noutram | 1:4fb27aea76b2 | 124 | |
noutram | 0:f916cefba2f4 | 125 | while(true); |
noutram | 0:f916cefba2f4 | 126 | } |