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v1 updated for mbed os 5.4
Fork of Task631-mbedos54 by
main.cpp
- Committer:
- noutram
- Date:
- 2016-03-21
- Revision:
- 9:31031bbb59c7
- Parent:
- 8:c5663f5fa848
- Child:
- 10:624be54e5299
File content as of revision 9:31031bbb59c7:
#include "mbed.h" #include "rtos.h" #include "string.h" #include <stdio.h> #include <ctype.h> #define SWITCH1_RELEASE 1 void thread1( const void* ); void thread2( const void* ); void switchISR(); //Analogue inputs AnalogIn adcIn(A0); //Digital outputs DigitalOut onBoardLED(LED1); DigitalOut redLED(D7); DigitalOut yellowLED(D6); DigitalOut greenLED(D5); //Digital inputs DigitalIn onBoardSwitch(USER_BUTTON); DigitalIn sw1(D4); //CONSIDER CHANGING THIS TO AN INTERRUPT DigitalIn sw2(D3); //Threads Thread *t1; //Queues - "A message can be a integer or pointer value to a certain type T that is sent to a thread or interrupt service routine." Queue<uint32_t, 5> *queue; // Call this on precise intervals void adcISR() { //Option to starve the queue if (sw2 == 1) return; //Read sample - make a copy uint32_t sample = (uint32_t)(4095*adcIn.read()); //Write to queue osStatus stat = queue->put((uint32_t*)sample); //Check if succesful if (stat == osErrorResource) { redLED = 1; printf("queue->put() Error code: %4Xh, Resource not available\r\n", stat); } } //Normal priority thread (consumer) void thread1( const void* arg ) { while (true) { //Read queue - block (with timeout) osEvent evt = queue->get(5000); //With timeout //Check status of get() switch (evt.status) { case osEventMessage: //Normal status printf("value = %d\n\r", evt.value.v); greenLED = !greenLED; break; case osEventTimeout: //Timeout printf("queue->get() returned %02x status (timeout)\n\r", evt.status); break; default: //All other errors (see cmsis_os.h for meaning of error code) printf("queue->get() returned %02x status\n\r", evt.status); break; } //Block up consumer if switch is held down //Will fill the queue if held long enough while (sw1 == 1); } //end while } // Main thread int main() { redLED = 0; yellowLED = 0; greenLED = 0; //Start message printf("Welcome\n"); //Queue queue = new Queue<uint32_t,5>(); //Hook up timer interrupt Ticker timer; timer.attach(&adcISR, 1.0); //Threads t1 = new Thread(&thread1); printf("Main Thread\n"); while (true) { Thread::wait(5000); puts("Main Thread Alive"); } }