István Cserny / Mbed 2 deprecated Lab07_RTOS_mutex

RTOS example - using stdio_mutex controlling the access to printf(). Note that this is necessary only for Cortex-M0 MCU-s

Dependencies:   mbed mbed-rtos

main.cpp@0:fe1656248d2b, 2022-02-24 (annotated)

Committer:
cspista
Date:
Thu Feb 24 08:06:02 2022 +0000
Revision:
0:fe1656248d2b
final version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cspista 0:fe1656248d2b 1 #include "mbed.h"
cspista 0:fe1656248d2b 2 #include "rtos.h"
cspista 0:fe1656248d2b 3
cspista 0:fe1656248d2b 4 Serial pc(USBTX,USBRX); //UART via ST-Link
cspista 0:fe1656248d2b 5 Mutex stdio_mutex;
cspista 0:fe1656248d2b 6
cspista 0:fe1656248d2b 7 void notify(const char* name, int state)
cspista 0:fe1656248d2b 8 {
cspista 0:fe1656248d2b 9 stdio_mutex.lock();
cspista 0:fe1656248d2b 10 pc.printf("%s: %d\n\r", name, state);
cspista 0:fe1656248d2b 11 stdio_mutex.unlock();
cspista 0:fe1656248d2b 12 }
cspista 0:fe1656248d2b 13
cspista 0:fe1656248d2b 14 void test_thread(void const *args)
cspista 0:fe1656248d2b 15 {
cspista 0:fe1656248d2b 16 while (true) {
cspista 0:fe1656248d2b 17 notify((const char*)args, 0);
cspista 0:fe1656248d2b 18 Thread::wait(1000);
cspista 0:fe1656248d2b 19 notify((const char*)args, 1);
cspista 0:fe1656248d2b 20 Thread::wait(1000);
cspista 0:fe1656248d2b 21 }
cspista 0:fe1656248d2b 22 }
cspista 0:fe1656248d2b 23
cspista 0:fe1656248d2b 24 int main()
cspista 0:fe1656248d2b 25 {
cspista 0:fe1656248d2b 26 pc.baud(115200);
cspista 0:fe1656248d2b 27 Thread t2(test_thread, (void *)"Th 2");
cspista 0:fe1656248d2b 28 Thread t3(test_thread, (void *)"Th 3");
cspista 0:fe1656248d2b 29 test_thread((void *)"Th 1");
cspista 0:fe1656248d2b 30 }