Proper way to define Queue

[SRose]

What is the proper way to use the Queue Library and define a queue that can be used across multiple C files?  I have the following code a my common header

NRF_QUEUE_DEF(uint8_t, m_msg_queue, 36, NRF_QUEUE_MODE_OVERFLOW);
NRF_QUEUE_INTERFACE_DEC(uint8_t, msg_queue);
NRF_QUEUE_INTERFACE_DEF(uint8_t, msg_queue, &m_msg_queue);

I have two source files which have their own headers where each of them include the common header.  When LINKING, i get multiple definition of for the queue.   And yes I have include guards in every *.h  

[Jakub Rzeszutko]

Hi,

You shall move below source to .c file:

NRF_QUEUE_DEF(uint8_t, m_msg_queue, 36, NRF_QUEUE_MODE_OVERFLOW);
NRF_QUEUE_INTERFACE_DEC(uint8_t, msg_queue);
NRF_QUEUE_INTERFACE_DEF(uint8_t, msg_queue, &m_msg_queue);

In other .c file you need this queue add:

extern const nrf_queue_t m_msg_queue;

[SRose]

I put the NRF_QUEUE_INTERFACE_DEC(uint8_t, msg_queue);  in the common header file and put the other two in a .c file and everything is working.