7 years, 5 months ago.

I also have just had the exact same problem, is it thread.start() is it Thread t(); t.start(obj). The documentation is all over the shop. My threads are not starting, I can find 3 different examples of how to use threading

Example 1

1. include "mbed.h"
2. include "rtos.h"

DigitalOut led1(LED1); DigitalOut led2(LED2);

void led2_thread(void const *args) { while (true) { led2 = !led2; Thread::wait(1000); } }

int main() { Thread thread(led2_thread);

while (true) { led1 = !led1; Thread::wait(500); } }

Example 2:

Blink function toggles the led in a long running loop void blink(void) { while (running) { led1 = 0; Thread::wait(1000); led1 = 1; Thread::wait(1000); } }

int main() { running = true; thread.start(blink); }

Example 3 void some_function(int i);

int main(void) { int a = 2;

Thread t1(); t1.start(some_function, a); this won't work }

None are working for me. I appreciate that this is a technology preview but it appears to be chopping and changing so much the documentation is out of date making me less inclined to use mbeds.

7 years, 5 months ago.

The #include "rtos.h" statement clearly indicates that Example 1 is incorrect. In mbed 2 the rtos functionality was defined in a separate header file rtos.h. In mbed 5 the rtos functionality definitions were integrated into the mbed.h file and the rtos.h file is no longer used. When attempting to use mbed 5.2 one also need to make sure the mbed library included in the project is mbed-os and not mbed. The mbed library implements the old mbed 2 functionality. As of 11/23/2016 the online ide's library import wizard will not find the mbed-os library; however it can be added to an online ide project by using the import via URL option with the following url https://github.com/ARMmbed/mbed-os/. Also portions of the rtos functionality were broken in the 5.1.X releases of the mbed library; therefore one needs to ensure they are using the 5.2.0 or later release of the mbed-os library.