flexray_handler.c

基于freescale MC9S12XF512 MCU

/*******************************************************************************/
/**
Copyright (c) 2007 Freescale Semiconductor
Freescale Confidential Proprietary
\file       FlexRay_handler.c
\brief      FlexRay module handling routines.
            Code based on the Transmit/Receive application example 
            for the FlexRay UNIFIED driver in interrupt driven mode
            (transmit_receive_node1.c) made by R62779.            
\author     Freescale Semiconductor
\author     Guadalajara Applications Laboratory RTAC Americas
\author     Jaime Orozco
\version    1.0
\date       March/12/2007
*/
/*******************************************************************************/
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/*******************************************************************************/

/** S12X derivative information */ 
#include "M9S12XF512.h"       

/** Standard and driver types */
#include "Fr_UNIFIED_types.h"  

/** UNIFIED driver implementation */         
#include "Fr_UNIFIED.h"        
         
/** Configuration data for the FlexRay node */
#include "Fr_UNIFIED_cfg.h"


/** Return values */
Fr_return_type return_value;      
/** Current protocol state */      
Fr_POC_state_type protocol_state;       
/** Current wakeup status */
Fr_wakeup_state_type wakeup_status;  


/******************************************************************************/
/**
* \brief    Error function for debugging 
* \author   R62779
* \param    u8number: error code
* \return   void
*/
void Failed(uint8 u8number)               
{    
    while(1);       /* Function only for debugging, CC should be restarted  */
}


/*******************************************************************************/
/**
* \brief    FlexRay module configuration
* \author   Jaime Orozco
* \param    void
* \return   void
*/
void vfnFlexRay_Init(void) {   
 
    /* Enable the FlexRay CC and force it into FR_POCSTATE_CONFIG */
    return_value = Fr_init(&Fr_HW_cfg_00, &Fr_low_level_cfg_set_00);
    if(return_value == FR_NOT_SUCCESS) 
        Failed(1);   /* Call debug function in case of any error */

    /* Initialization of the FlexRay CC with protocol configuration parameter */
    Fr_set_configuration(&Fr_HW_cfg_00, &Fr_low_level_cfg_set_00);
    
    
    /* Leave FR_POCSTATE_CONFIG state */
    return_value = Fr_leave_configuration_mode();
    if(return_value == FR_NOT_SUCCESS)
        Failed(2);   /* Call debug function in case of any error */

    /* Retrieve the wakeup state */
    wakeup_status = Fr_get_wakeup_state();
    
    /* Check whether a wakeup pattern has been received */
    if(wakeup_status == FR_WAKEUPSTATE_UNDEFINED)
    {   /* No wakeup pattern has been received */
        /* Initiate wakeup procedure */
        return_value = Fr_send_wakeup();
        if(return_value == FR_NOT_SUCCESS)
            Failed(3);   /* Call debug function in case of any error */    
    }
       
    protocol_state = Fr_get_POC_state();    /* Load current POC state */
    
    /* Wait till the FR CC is not in the FR_POCSTATE_READY */
    while(Fr_get_POC_state() != FR_POCSTATE_READY)  
    {
        protocol_state = Fr_get_POC_state();    /* Load current POC state */
    }                   
} 


/************************************************************************************/