RE: Interrupt context to main context with nRF Connect SDK 2.3.0

ViktorVarjas — Tue, 11 Jul 2023 12:50:13 GMT

Hi Hieu!

Thank you very much, this is what I was looking for. Especially the "system workqueue" is the option I need, which is not really the focus of the fundamental course. It seems that the "system workqueue" is preferred solution as long as it is not full.

Important parameter in proj.conf:

CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE = 2048 (default size)

To offload work from interrupt context:

struct k_work work;

void offload_function(struct k_work *work_tem)
{
	//do work here
}

void IRQ_handler(const struct device *dev, struct gpio_callback *cb, uint32_t pins)
{
	k_work_submit(&work);       // submit to queue from the interrupt handler
}

void main(void)
{
    //other initializations such as BLE, IRQ handlers, etc
    
    k_work_init(&work, offload_function);
}

All the best,

Viktor

RE: Interrupt context to main context with nRF Connect SDK 2.3.0

Hieu — Tue, 11 Jul 2023 00:31:57 GMT

Hi Viktor,

For this, you could refer to our free nRF Connect SDK Fundamental course. Of immediate interest to your question would be Lesson 7: Multithreaded applications, and Lesson 8: Thread synchronization. However, I recommend going over the entire course if you are new to the nRF Connect SDK.

Hieu