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mpconfigport.h

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  • dispatcher.c 1.14 KiB
    #include <stdlib.h>
    #include "sema.h"
    #include "api/dispatcher.h"
    #include "max32665.h"
    
    int api_dispatcher_init()
    {
    	int ret;
    
    	ret                     = SEMA_Init(NULL);
    	API_CALL_MEM->call_flag = _API_FLAG_IDLE;
    
    	/*
    	 * Enable TX events for both cores.
    	 * TODO: Is this the right place?
    	 */
    	MXC_GCR->evten |=
    		MXC_F_GCR_EVTEN_CPU0TXEVENT | MXC_F_GCR_EVTEN_CPU1TXEVENT;
    
    	return ret;
    }
    
    static bool event_ready = false;
    
    bool api_dispatcher_poll_once()
    {
    	if (event_ready) {
    		return false;
    	}
    
    	while (SEMA_GetSema(_API_SEMAPHORE) == E_BUSY) {
    	}
    
    	if (API_CALL_MEM->call_flag != _API_FLAG_CALLING) {
    		SEMA_FreeSema(_API_SEMAPHORE);
    		return false;
    	}
    
    	event_ready = true;
    	return true;
    }
    
    bool api_dispatcher_poll()
    {
    	if (event_ready) {
    		return true;
    	}
    
    	return api_dispatcher_poll_once();
    }
    
    api_id_t api_dispatcher_exec()
    {
    	if (!event_ready) {
    		return 0;
    	}
    
    	GPIO_OutClr(&debug_pin_1);
    
    	api_id_t id = API_CALL_MEM->id;
    	__api_dispatch_call(id, API_CALL_MEM->buffer);
    	API_CALL_MEM->call_flag = _API_FLAG_RETURNED;
    
    	event_ready = false;
    	SEMA_FreeSema(_API_SEMAPHORE);
    
    	/* Notify the caller that we returned */
    	__SEV();
    	__WFE();
    
    	return id;
    }