myinit.c

来自「mcf5307实验源代码」· C语言 代码 · 共 148 行

#include  "..\NUCLEUS\mcf5307.h"
#include  "..\NUCLEUS\nucleus.h"
#include  "myinit.h"
//#include "uart.h"

extern unsigned char RxData[4096]; 
extern unsigned char TxData[4096];  
extern unsigned char Uart1_TxCompleted;       //0xff means receive ok
extern unsigned char Uart1_RxCompleted;       //0xff means receive ok
extern NU_MEMORY_POOL  System_Memory;

//Global Variable Used For Uart1
extern unsigned char *   Uart1_RxPointer;         //Pointer to Rx Buf
extern unsigned long int Uart1_RxRequestLength;   //how many Data to receive 

MCF5307_IMM *imm;
extern NU_TASK Task_3;
extern NU_SEMAPHORE    Semaphore_uart_trans;
extern NU_SEMAPHORE    Semaphore_uart_receive;
//extern void (*NU_old_vect_routine)(INT);
NU_HISR HISR_Control;
NU_HISR NetControllerHisr;
CHAR HISR_Stack[1024];
//extern void Net_Lisr();
//extern void NetCtlrHisr(void);

VOID Example_LISR(INT vector)
{
  asm("  MOVE.L  #$10000248,A0  ");        
  asm("  MOVE.W	#$FFFF,(A0)   ");	
  imm->sim.IPR = ~0;
  Interrupt_UART1();	
  NU_Activate_HISR(&HISR_Control);
  
}
void RegUartLISR(void)
{

	VOID (*old_lisr)(INT);
	/* Register the LISR with vector 10. The previously registered
	LISR is returned in old_lisr. */
	NU_Register_LISR(0x19, Example_LISR, &old_lisr);
	

}
/*
int RegNetLISR(void)
{
	STATUS  status;
	status = NU_Register_LISR (0x1a, Net_Lisr, &NU_old_vect_routine);
	if(status != NU_SUCCESS)
	{
		return NU_FALSE;
	}
	return (NU_SUCCESS);
}

int RegNetHISR(void)
{
    STATUS  status;
    VOID    *pointer;
    status = NU_Allocate_Memory (&System_Memory, &pointer, 1024, NU_NO_SUSPEND);
    if (status != NU_SUCCESS)
    {
		return NU_FALSE;
    }

    status = NU_Create_HISR (&NetControllerHisr, "NetCtlr",
                                NetCtlrHisr, 1, pointer, 1024);
    if (status != NU_SUCCESS)
    {
		return NU_FALSE;
    }		
    return (NU_SUCCESS);
}
*/
VOID Example_HISR(void)
{

 // NU_Resume_Task(&Task_3);
 
 asm("  MOVE.L  #$10000248,A0  ");       
 asm("  MOVE.W	#$0000,(A0)   ");
 if(Uart1_TxCompleted==0xff)  
    NU_Release_Semaphore(&Semaphore_uart_trans);            //notify the Printf function
 if(Uart1_RxCompleted==0xff)  
    NU_Release_Semaphore(&Semaphore_uart_receive);    
 asm("  MOVE.L  #$10000248,A0  ");
 asm("  MOVE.W	#$FFFF,(A0)   ");
 
}

void RegUartHISR(void)
{
  	
  	STATUS status;
  	void (*old_lisr)(INT);
  	
  	status=NU_Create_HISR(&HISR_Control, "EXMPHISR",Example_HISR, 2, HISR_Stack, 500);

}


void SystemInit()
{
 
 imm= (MCF5307_IMM *)0x10000000;   
 Uart1_ReInit(imm);                           //re init uart as 9600
 
 imm->sim.AVCR=0xFE;   //0xd4;                //enable ext. int. auto vect.
 imm->sim.IRQPAR=0x20;   //ext.irq 5-3-1 -> 5-3-2  //0x80;              // ext. IRQ  5-3-1 mapped to IRQ   4/6/2
                         //中断向量0x1a
 imm->sim.IMR=(0x0000
                |MCF5307_SIM_IMR_DMA3
 	        |MCF5307_SIM_IMR_DMA2
 		|MCF5307_SIM_IMR_DMA1
 		|MCF5307_SIM_IMR_DMA0
 		|MCF5307_SIM_IMR_UART2
// 		|MCF5307_SIM_IMR_UART1
 		|MCF5307_SIM_IMR_MBUS
 		|MCF5307_SIM_IMR_TIMER2
// 		|MCF5307_SIM_IMR_TIMER1
 		|MCF5307_SIM_IMR_SWT
 		|MCF5307_SIM_IMR_EINT7
 		|MCF5307_SIM_IMR_EINT6
 		|MCF5307_SIM_IMR_EINT5
 		|MCF5307_SIM_IMR_EINT4
 		|MCF5307_SIM_IMR_EINT3
//		|MCF5307_SIM_IMR_EINT2                  //enable net card
 		|MCF5307_SIM_IMR_EINT1 
 	       );  
 		
 asm("		move.w		#0x2000,SR      ");    //enable interrupt
 
  Uart1_RxPointer=RxData;
  Uart1_RxRequestLength=0x01;
  Uart1_ReadyToReceive();
//  InitMbus();
 RegUartHISR();
 RegUartLISR();
// RegNetHISR();
// RegNetLISR();
 
 cpu_cache_disable();
 EnableCache();
}