setups12x.h

来自「关于XD256的应用实例,用于汽车电子开发之用」· C头文件 代码 · 共 49 行

/*****************************************************
 setupS12X.h - Startup and initialization code HCS12X
 ----------------------------------------------------
 tility functions to setup the HCS12X cores:
 - Contains the main entry point of the application 
   that initializes the PLL and calls the main function
   through the standard C startup code.
 - Includes a function to setup the XGATE core.
  
 *****************************************************/

#ifndef __SETUPS12X_H_
#define __SETUPS12X_H_

#include "hidef.h" /* this file declares symbols user by the CodeWarrior environment */

/*************************************************************************************
 This is the main entry point for the application. The reset vector shall pint to this 
 function
-------------------------------------------------------------------------------------*/
 
#pragma CODE_SEG __NEAR_SEG NON_BANKED  /* make sure this code is located in non banked */  
 
interrupt void S12X_EntryPoint(void);

#pragma CODE_SEG DEFAULT                /* back to the standard segment */


/*************************************************************************************
 Initializes the XGATE core and needs to be called before interrupts are enabled.
 Note: Prior to calling this function, the interrupt priority registers need to be 
       set up!
-------------------------------------------------------------------------------------*/

void S12X_SetupXGATE(void);


/*************************************************************************************
 Use this function to set the priority and core that handles interrupts.
 Channel:  the interrupt number (vector address/2)
 Priority: the interrupt priority (1..7). If the XGATE should handle the request, RQST
           can be masked to the interrupt level
-------------------------------------------------------------------------------------*/

#define	RQST        0x80               

void S12X_SetInterruptPriority(uchar Channel, uchar Priority);

#endif