István Cserny / Mbed 2 deprecated Lab08_rtos_signals

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Dependencies:   mbed mbed-rtos

main.cpp@0:bd08296227ad, 2022-03-17 (annotated)

Committer:
cspista
Date:
Thu Mar 17 12:43:28 2022 +0000
Revision:
0:bd08296227ad
Final version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cspista 0:bd08296227ad 1 #include "mbed.h"
cspista 0:bd08296227ad 2 #include "rtos.h"
cspista 0:bd08296227ad 3
cspista 0:bd08296227ad 4 DigitalOut led(LED1);
cspista 0:bd08296227ad 5
cspista 0:bd08296227ad 6 void led_thread(void const *argument) {
cspista 0:bd08296227ad 7 while (true) {
cspista 0:bd08296227ad 8 // Signal flags that are reported as event are automatically cleared.
cspista 0:bd08296227ad 9 osEvent evt = Thread::signal_wait(0); //Wait for any signal
cspista 0:bd08296227ad 10 switch(evt.status) {
cspista 0:bd08296227ad 11 case osOK:
cspista 0:bd08296227ad 12 printf("osOK\n"); //no error or event occurred
cspista 0:bd08296227ad 13 break;
cspista 0:bd08296227ad 14 case osEventSignal:
cspista 0:bd08296227ad 15 printf("osEventSignal = %#05x\n",evt.value.signals); //signal event occurred
cspista 0:bd08296227ad 16 break;
cspista 0:bd08296227ad 17 case osEventTimeout:
cspista 0:bd08296227ad 18 printf("osEventTimeout\n"); //timeout occurred
cspista 0:bd08296227ad 19 break;
cspista 0:bd08296227ad 20 case osErrorValue:
cspista 0:bd08296227ad 21 printf("osErrorValue\n"); //value of a parameter is out of range
cspista 0:bd08296227ad 22 break;
cspista 0:bd08296227ad 23 default:
cspista 0:bd08296227ad 24 printf("Unknown error flag: %#08x\n",(uint32_t)evt.status);
cspista 0:bd08296227ad 25 break;
cspista 0:bd08296227ad 26 };
cspista 0:bd08296227ad 27 led = !led;
cspista 0:bd08296227ad 28 }
cspista 0:bd08296227ad 29 }
cspista 0:bd08296227ad 30
cspista 0:bd08296227ad 31 int main (void) {
cspista 0:bd08296227ad 32 int32_t signal_mask = 0x1;
cspista 0:bd08296227ad 33 Thread thread2(led_thread);
cspista 0:bd08296227ad 34 while (true) {
cspista 0:bd08296227ad 35 Thread::wait(1000);
cspista 0:bd08296227ad 36 thread2.signal_set(signal_mask);
cspista 0:bd08296227ad 37 signal_mask <<=1;
cspista 0:bd08296227ad 38 if(signal_mask > 0x8000) signal_mask=0x1;
cspista 0:bd08296227ad 39 }
cspista 0:bd08296227ad 40 }