reset.c

usbn9603等时传输的firmware

 /*----------------------------------------------------------------------------
 *  Copyright (c) 200 by National Semiconductor Corporation
 *  National Semiconductor Corporation
 *
 *  All rights reserved
 *
 *<<<-------------------------------------------------------------------------
 *  File Contents:
 *	Reset routines
 *
 *  Project: USB Demo firmware
 *  Author : Yan Nosovitsky
 *  Date   : Oct 2001
 *----------------------------------------------------------------------->>>*/

#include "..\include\all.h"

/*<<<------------------------------------------------------------------------- 
 *
 * The software reset routine. Initializes the main system blocks (like
 * stacks, wait-states, dispach table) before we can start working.
 *
 *--------------------------------------------------------------------------*/ 
void c_reset(void)
{
    u_int saved_psr;
	WORD i;

	// delay to make cristal stable
	for(i=0 ;i< 0xFFFF ;i++);

	ICU_init();
	/*First set the environment clock*/
	/* This way you set the clock 8MHz max performence */
	//HFCGP = 0x04;
	//HFCGCTRL1 |= HFCGCTRL1_LOAD96;
//	if (GET_DIP_SW1() & 0x80){
//		/* This way you set the clock 8MHz max performence */
//		HFCGN = 0x0B;
//		HFCGML = 0x7C;
//		HFCGMH = 0x0A;
//	}
//	else {
		/* This way you set the clock 20MHz max performence */
		HFCGN = 0x0A;
		HFCGML = 0xD6;
		HFCGMH = 0x17; 
//	}

	HFCGCTRL1 |= HFCGCTRL1_LOAD;

	/*Set the memory to work with late write, and enable the BIU unit*/
	BCFG = 0;
	MCFG = MCFG_ENEIO;
	MCFGSH = MCFG_ENEIO;
	
	IOCFG = IOCFG_HOLD0 | IOCFG_HOLD1; /* 0 wait state, 3 hold clock, 0 idle cycle*/
	SZCFG1 = SZCFG1_BW | SZCFG1_FRE;

	/*Set the Leds presentation     */
	PFALT = 0x0;		/*Set IOPF port aternate function to work as GPIO port*/
	PFDIR = 0xFF;		/*Set the direction of the IOPF port to output*/
	SET_ID_LEDS(0);		/*Turn off all the Leds*/
	RESET_USB_LED();

	/*Set the GPIO port to 0x55*/
	PCALT = 0;		/*Set IOPC alternate funcion to GPIO*/
	PCDIR = 0xFF;	/*Set all the IOPC port to output*/
	PCDOUT = 0x0;	/*Set the output of the IOPC port to 0x55*/
	
    /* USBN9604 init */
    USBN9604_init();
	
	/*enable usb interrupt*/
	//ICU_unmask_int(USB_NODE_INT);
    
	/* SCANPSC100F init */
//	SCANPSC100F_init();

	/*enable usb interrupt*/
	USB_int_enable();

	//Watchdog initialization
	WATCHDOG_INIT;
	
	//USB_Init();
	
	/* Enable interrupts */
    _spr_("psr",saved_psr);
    saved_psr |= PSR_E_BIT_MASK | PSR_I_BIT_MASK;
    _lpr_("psr",saved_psr);

	dprintf(("write done\n"));

	main();
}

/*----------------------------------------------------------------------------
 * void panic(msg)
 *
 * This function is a hook for catching anomalous/catastrophic events.
 * It can be replacable by the user (since it resides in a library)
 * simply by defining it somewhere else.
 *
 * It assumes the 'msg' contains some information about the problem,
 * (although you don't HAVE to pass it anything).
 * Examining the context (active routines on the current stack, 'where'
 * from within the debugger) may further direct you to the problem.
 *
 * This is here only for debugging - if you get here - it is a real problem
 * that should never happen in a final product.
 * In the 'production' we do a cold-reset from here, just in case...
 * In principle, 'panic' should be never called in a real product.
 *--------------------------------------------------------------------------*/
public int panic(char *str)
{
#ifdef DEBUG
	printf(str);
	ROM_BPT;
#else
	WATCHDOG_RESET;
#endif
    return 0;
}