To use a single PWM object in multiple threads, you would need to employ a locking mechanism to control access to the PWM object. Here's a general approach based on the text book <MicroPyhon Programming the Pico>
1.Create a single instance of the PWM object in your main thread or a shared scope.
2. Initialize a lock object using the _thread module. For example:
3. In each thread that needs to interact with the pwm_object, you should:
Acquire the lock before performing any operations on the PWM object (e.g., setting frequency, duty cycle).
Perform the necessary operations on the pwm_object.
Release the lock after the operations are complete.
In the _thread module you will find functions that can be used like:
myLock.acquire() and myLock.release() to protect a shared variable.
By using a lock, you ensure that only one thread can access and modify the state of the pwm_object at any given time, preventing race conditions and potential errors. The try...finally block is crucial to ensure that the lock is always released, even if an exception occurs within the critical section.
Hopefully this helps guide you in the right direction.
1.Create a single instance of the PWM object in your main thread or a shared scope.
2. Initialize a lock object using the _thread module. For example:
3. In each thread that needs to interact with the pwm_object, you should:
Acquire the lock before performing any operations on the PWM object (e.g., setting frequency, duty cycle).
Perform the necessary operations on the pwm_object.
Release the lock after the operations are complete.
In the _thread module you will find functions that can be used like:
myLock.acquire() and myLock.release() to protect a shared variable.
By using a lock, you ensure that only one thread can access and modify the state of the pwm_object at any given time, preventing race conditions and potential errors. The try...finally block is crucial to ensure that the lock is always released, even if an exception occurs within the critical section.
Hopefully this helps guide you in the right direction.
Statistics: Posted by hoodhlab — Fri Mar 28, 2025 12:55 am