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Dear micropython developers,
this morning I found about micropython V1.22 and tried this on my Raspberry Pico (non W). But unfortunately I had to find out that my programs stop when the second thread is created.
consider this boot.py to reproduce the issue:
import_threadimportmachineimportasynciofromtimeimportsleep,sleep_msasyncdefthread1task():print("thread 1 started")whileTrue:print("thread 1 talking ... ")awaitasyncio.sleep(1)defthread2task():print("thread 2 started")whileTrue:print("thread 2 talking ... ")sleep(1)if__name__=="__main__":try:loop=asyncio.get_event_loop()messagestart=const(">> starting script in ... ")print(messagestart+f"3")sleep(1)print(messagestart+f"2")sleep(1)print(messagestart+f"1")sleep(1)print(">> Loop is starting")taskobj=loop.create_task(thread1task())print(">> starting second thread...")_thread.start_new_thread(thread2task,())print(">> running loop ...")loop.run_forever()exceptKeyboardInterrupt:loop.stop()_thread.exit()# does not work, code hangsprint(f"INTERRUPTED")
The hangup is not always at the exact same spot, but the "most" debug output I could receive was:
MPY: soft reboot>> starting script in ... 3>> starting script in ... 2>> starting script in ... 1>> Loop is starting>> starting second thread...>> running loop ...thread 2 startedthread 2 talking ...After that the serial port is blocked, device does not react to CTRL+C or any other keys.
Executing the code above with V1.21 has no issues and runs forever as expected.