init.c

基于mcf5307开发板的sed1335控制液晶屏显示的程序

/* 
 * Purpose:		Initialize ColdFire 5307
 *
 */

#define IMMaddr	0x10000000
#define SDRAMaddr 0x00000000
#define SDRAMsize 0x00800000	//8M
#define SRAMaddr 0x00800000
#define SRAMsize (4 * 1024)	    //4k	

#include "mcf5307.h" 
void
mcf5307_sim_init (MCF5307_IMM *imm)
{
	
        /************************************************************************/
        /*                                                                      */
        /*  This routine executed upon reset to initialize MCF5307              */
        /*  peripherals, except Chip Selects and DRAM.  An initial stack must   */
        /*  have been setup in the internal SRAM in order for this routine to 	*/
	/*  work.      								*/
        /*                                                                      */
        /************************************************************************/

        /************************************************************************/
        /*  SIM                                                                 */
        /************************************************************************/
        imm->sim.SYPCR = 0;   /*  Disable the Software Watchdog                         */
        imm->sim.PAR = 0xff00;     /*  a23-a31 , gen. out                   */
    //    imm->parallel_port.PADDR =0x00ff;
        imm->sim.IRQPAR = 0;  /*  IRQ1,3,5 are Internal Interrupts 1,3,5, respectively  */
        imm->sim.PLLCR = 0x80;   /*  Disable CPU STOP Instruction                          */
        imm->sim.MPARK = 0;   /*  Disable external visibility of internal bus           */
        imm->sim.IPR = ~0;    /*  Clear all pending interrupts                          */
        imm->sim.IMR = ( 0    /*  Mask all interrupt sources                            */
                | 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_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
                | MCF5307_SIM_IMR_EINT1 ) ;
        imm->sim.AVCR = (0
		| MCF5307_SIM_AVCR_AVEC7 
		| MCF5307_SIM_AVCR_AVEC6
		| MCF5307_SIM_AVCR_AVEC5
		| MCF5307_SIM_AVCR_AVEC4
		| MCF5307_SIM_AVCR_AVEC3
		| MCF5307_SIM_AVCR_AVEC2
		| MCF5307_SIM_AVCR_AVEC1
                | MCF5307_SIM_AVCR_BLK ); 
        /*      Block address strobe for external AVEC   */
        /*      Setup Interrupt Source Vectors           */
        /*      All interrupts are autovectored          */
        /*      The levels are set to the numbers shown  */
        /*      The priorities exceed the type shown     */
        imm->sim.ICR0 = ( 0                     /* Software Watchdog */
                | MCF5307_SIM_ICR_AVEC
                | MCF5307_SIM_ICR_IL(7)
                | MCF5307_SIM_ICR_IP_EXT ) ;
        imm->sim.ICR1 = ( 0
                | MCF5307_SIM_ICR_AVEC          /* Timer 1 */
                | MCF5307_SIM_ICR_IL(5)
                | MCF5307_SIM_ICR_IP_EXT
                | MCF5307_SIM_ICR_IP_INT ) ;
	imm->sim.ICR2 = ( 0
                | MCF5307_SIM_ICR_AVEC          /* Timer 2 */
                | MCF5307_SIM_ICR_IL(5)
                | MCF5307_SIM_ICR_IP_INT ) ;
	imm->sim.ICR3 = ( 0
                | MCF5307_SIM_ICR_AVEC          /* MBUS */
                | MCF5307_SIM_ICR_IL(3) ) ;
        imm->sim.ICR4 = ( 0
                | MCF5307_SIM_ICR_AVEC          /* UART 1 */
                | MCF5307_SIM_ICR_IL(3)
                | MCF5307_SIM_ICR_IP_EXT ) ;
        imm->sim.ICR5 = ( 0
                | MCF5307_SIM_ICR_AVEC          /* UART 2 */
                | MCF5307_SIM_ICR_IL(3)
                | MCF5307_SIM_ICR_IP_INT ) ;
        imm->sim.ICR6 = ( 0
                | MCF5307_SIM_ICR_AVEC          /* DMA 0 */
                | MCF5307_SIM_ICR_IL(2) ) ;
        imm->sim.ICR7 = ( 0
                | MCF5307_SIM_ICR_AVEC          /* DMA 1 */
                | MCF5307_SIM_ICR_IL(2)
                | MCF5307_SIM_ICR_IP_INT ) ;
        imm->sim.ICR8 = ( 0
                | MCF5307_SIM_ICR_AVEC          /* DMA 2 */
                | MCF5307_SIM_ICR_IL(2)
                | MCF5307_SIM_ICR_IP_EXT ) ;
        imm->sim.ICR9 = ( 0
                | MCF5307_SIM_ICR_AVEC          /* DMA 3 */
                | MCF5307_SIM_ICR_IL(2)
                | MCF5307_SIM_ICR_IP_EXT
                | MCF5307_SIM_ICR_IP_INT ) ;
        imm->sim.ICR10 = ( 0
                | MCF5307_SIM_ICR_AVEC          /* unused */
                | MCF5307_SIM_ICR_IL(1) ) ;
        imm->sim.ICR11 = ( 0
                | MCF5307_SIM_ICR_AVEC          /* unused */
                | MCF5307_SIM_ICR_IL(1)
                | MCF5307_SIM_ICR_IP_EXT ) ;
}
 
void
mcf5307_timer_init (MCF5307_IMM *imm)
{
        /************************************************************************/
        /*  Timers                                                              */
        /************************************************************************/
 
        imm->timer.TMR1 = 0 ;   /* Stop clock and disable timer */
        imm->timer.TMR2 = 0 ;   /* Stop clock and disable timer */
}
 
void
mcf5307_pport_init (MCF5307_IMM *imm)
{
        /************************************************************************/
        /*  Parallel Port                                                       */
        /************************************************************************/
 
        imm->parallel_port.PADDR = 0xff;   /* Init PADDR to all outputs  */
}
 
void
mcf5307_mbus_init (MCF5307_IMM *imm)
{
        /************************************************************************/
	/*  MBUS								*/
        /************************************************************************/

	imm->mbus.MBCR = 0;     /* Disable MBUS */
}
 
void
mcf5307_dma_init (MCF5307_IMM *imm)
{
        /************************************************************************/
        /*  DMA                                                                 */
        /************************************************************************/
 
        imm->dma.DCR0 = 0;      /* Disable DMA 0 */
        imm->dma.DCR1 = 0;      /* Disable DMA 1 */
        imm->dma.DCR2 = 0;      /* Disable DMA 2 */
        imm->dma.DCR3 = 0;      /* Disable DMA 3 */
}



void
mcf5307_uart_init(MCF5307_IMM *imm)
{
	/************************************************************************/
	/*									*/
	/*  This routine initializes UART 1 and UART 2 on the board.		*/
	/*									*/
	/************************************************************************/

	/************************************************************************/
	/*  UART 1								*/
	/************************************************************************/

	imm->uart1.UCR1 = MCF5307_UART_UCR_RESET_TX;	/* Transmitter Reset	*/
	imm->uart1.UCR1 = MCF5307_UART_UCR_RESET_RX;	/* Receiver Reset	*/
	imm->uart1.UCR1 = MCF5307_UART_UCR_RESET_MR;	/* Mode Register Reset	*/

	imm->uart1.UMR11_UMR21 = ( 0
		/* RTS is automatically negated	*/
		/* Interrupts when FIFO is full	*/
		/* Error occurs in BLOCK mode	*/
		| MCF5307_UART_UMR1_PM_NONE		/* No parity	*/
		| MCF5307_UART_UMR1_BC_8		/* 8 bits per character	*/
		) ;
	imm->uart1.UMR11_UMR21 = ( 0
		| MCF5307_UART_UMR2_CM_NORMAL		/* No echo or loopback	*/
		/* Transmitter RTS has no effect */
		/* Transmitter CTS has no effect */
		| MCF5307_UART_UMR2_STOP_BITS(7)	/* 1 stop bit	*/
		) ;
	imm->uart1.USR1_UCSR1 = ( 0
		| MCF5307_UART_UCSR_RCS(0xd)	/* Set receiver baud by timer	*/
		| MCF5307_UART_UCSR_TCS(0xd)	/* Set transmitter baud by timer*/
		) ;
	imm->uart1.UIPCR1_UACR1 = ( 0
		| MCF5307_UART_UACR_CTMS_TIMER	/* Set baud by timers	*/
		) ;
	imm->uart1.UISR1_UIMR1 = 0;		/* Disable all interrupts	*/


	imm->uart1.UBG11 = 0;
	imm->uart1.UBG21 = 0x49;		/* Set baud to 19200.	Baudrate= BCLKO/32/UBG */

	/************************************************************************/
	/*  UART 2								*/
	/************************************************************************/

	imm->uart2.UCR2 = ( 0		/* Disable UART 2 */
		| MCF5307_UART_UCR_TX_DISABLED
		| MCF5307_UART_UCR_RX_DISABLED
		) ;
}

void mcf5307_cs_init (MCF5307_IMM *imm)
{
	 unsigned short int Temp;
        /************************************************************************/
        /*                                                                      */
        /*  This routine initializes ChipSelects to setup peripherals.          */
        /*                                                                      */