tool/mbed/mbed-sdk/libraries/tests/rtos/mbed/signals/main.cpp

   1 #include "mbed.h"
   2 #include "test_env.h"
   3 #include "rtos.h"
   4
   5 #define SIGNALS_TO_EMIT     100
   6 #define SIGNAL_HANDLE_DELEY 25
   7 #define SIGNAL_SET_VALUE    0x01
   8
   9 /*
  10  * The stack size is defined in cmsis_os.h mainly dependent on the underlying toolchain and
  11  * the C standard library. For GCC, ARM_STD and IAR it is defined with a size of 2048 bytes
  12  * and for ARM_MICRO 512. Because of reduce RAM size some targets need a reduced stacksize.
  13  */
  14 #if defined(TARGET_STM32L053R8) || defined(TARGET_STM32L053C8)
  15     #define STACK_SIZE DEFAULT_STACK_SIZE/4
  16 #else
  17     #define STACK_SIZE DEFAULT_STACK_SIZE
  18 #endif
  19
  20 DigitalOut led(LED1);
  21 volatile int signal_counter = 0;
  22
  23 void led_thread(void const *argument) {
  24     while (true) {
  25         // Signal flags that are reported as event are automatically cleared.
  26         Thread::signal_wait(SIGNAL_SET_VALUE);
  27         led = !led;
  28         signal_counter++;
  29     }
  30 }
  31
  32 int main (void) {
  33     MBED_HOSTTEST_TIMEOUT(20);
  34     MBED_HOSTTEST_SELECT(default_auto);
  35     MBED_HOSTTEST_DESCRIPTION(Signals messaging);
  36     MBED_HOSTTEST_START("RTOS_4");
  37
  38     Thread thread(led_thread, NULL, osPriorityNormal, STACK_SIZE);
  39     bool result = true;
  40
  41     while (true) {
  42         Thread::wait(2 * SIGNAL_HANDLE_DELEY);
  43         thread.signal_set(SIGNAL_SET_VALUE);
  44         if (signal_counter == SIGNALS_TO_EMIT) {
  45             printf("Handled %d signals\r\n", signal_counter);
  46             break;
  47         }
  48     }
  49     MBED_HOSTTEST_RESULT(result);
  50     return 0;
  51 }