sio_drv.c

展讯SC6600D例程

/******************************************************************************
 ** File Name:      sio_drv.c                                                 *
 ** Author:         Xueliang.Wang                                             *
 ** DATE:           11/10/2005                                                *
 ** Copyright:      2005 Spreatrum, Incoporated. All Rights Reserved.         *
 ** Description:                                                              *
 ******************************************************************************

 ******************************************************************************
 **                        Edit History                                       *
 ** ------------------------------------------------------------------------- *
 ** DATE            NAME            DESCRIPTION                               *
 ** 11/10/2005      Xueliang.Wang   Create.                                   *
 ******************************************************************************/
#ifndef _SIO_DRV_C
#define _SIO_DRV_C

/**---------------------------------------------------------------------------*
 **                         Dependencies                                      *
 **---------------------------------------------------------------------------*/
#include "sio_drv.h"
#include "arm_reg.h"
#include "sc6600d_reg.h"

/**---------------------------------------------------------------------------*
 **                         Compiler Flag                                     *
 **---------------------------------------------------------------------------*/
#ifdef __cplusplus
    extern   "C"
    {
#endif

/**---------------------------------------------------------------------------*
 **                         Global Variables                                  *
 **---------------------------------------------------------------------------*/

/**---------------------------------------------------------------------------*
 **                     Local Function Prototypes                             *
 **---------------------------------------------------------------------------*/

/**---------------------------------------------------------------------------*
 **                         Function Definitions                              *
 **---------------------------------------------------------------------------*/
/*****************************************************************************/
//  Description:    The function initialize sio.
//	Global resource dependence: 
//  Author:         Xueliang.Wang
//	Note:
/*****************************************************************************/
PUBLIC BOOLEAN SIO_Init( // 
    UART_PORT_E com_id  // 
    )
{
	arm_uart_s *	arm_uart_ptr;
	
	if (COM0 == com_id)
	{
		*(volatile uint32 *)GR_GEN2 &= ~(BIT_8 | BIT_9);
		*(volatile uint32 *)GR_GEN1 |= BIT_22;		
		
		arm_uart_ptr = (arm_uart_s *)ARM_UART0_BASE;
	}
	else if (COM1 == com_id)
	{
		*(volatile uint32 *)GR_GEN2 &= ~(BIT_10 | BIT_11 | BIT_14);
		*(volatile uint32 *)GR_GEN1 |= BIT_23;		
		
		arm_uart_ptr = (arm_uart_s *)ARM_UART1_BASE;
	}
	else
	{
		return FALSE;
	}
		
	arm_uart_ptr->ie	= 0;
	arm_uart_ptr->ctl0	= 0x1C;	//0b00011100
	arm_uart_ptr->ctl1 	= 0;
	arm_uart_ptr->clkd0	= 0x71;
	arm_uart_ptr->clkd1	= 0x00;

	return TRUE;
}

/*****************************************************************************/
//  Description:    The function get a char from sio.
//	Global resource dependence: 
//  Author:         Xueliang.Wang
//	Note:
/*****************************************************************************/
PUBLIC char SIO_GetChar(    //
    UART_PORT_E com_id      //
    )
{
	arm_uart_s *	arm_uart_ptr;
	
	if (COM0 == com_id)
	{
		arm_uart_ptr = (arm_uart_s *)ARM_UART0_BASE;
	}
	else if (COM1 == com_id)
	{
		arm_uart_ptr = (arm_uart_s *)ARM_UART1_BASE;
	}
	else
	{
		return 0;
	}
	
	//If receive fifo is empty, waiting.
	while((arm_uart_ptr->sts1 & 0xFF) == 0);
	
	return ((char)arm_uart_ptr->rxd);
}

/*****************************************************************************/
//  Description:    The function output a char to sio.
//	Global resource dependence: 
//  Author:         Xueliang.Wang
//	Note:
/*****************************************************************************/
PUBLIC void SIO_PutChar(    // 
    UART_PORT_E com_id,     // 
    char c                  // 
    )
{
	arm_uart_s *	arm_uart_ptr;
	
	if (COM0 == com_id)
	{
		arm_uart_ptr = (arm_uart_s *)ARM_UART0_BASE;
	}
	else if (COM1 == com_id)
	{
		arm_uart_ptr = (arm_uart_s *)ARM_UART1_BASE;
	}
	else
	{
		return ;
	}
	
	//If the transfer fifo is nearly full, waiting.
	while(((arm_uart_ptr->sts1 & 0xFF00) >> 8) > 126);
	
	arm_uart_ptr->txd = (uint32)c;
}

/*****************************************************************************/
//  Description:    The function output a string to sio.
//	Global resource dependence: 
//  Author:         Xueliang.Wang
//	Note:
/*****************************************************************************/
PUBLIC void SIO_PutChars(   // 
    UART_PORT_E com_id,     // 
    const char * str_buf,   // 
    uint32      str_len     // 
    )
{
	uint32	i;
	
	for (i = 0; i < str_len; i++)
	{
		SIO_PutChar(com_id, *(str_buf+i));
	}
}

/**---------------------------------------------------------------------------*
 **                         Compiler Flag                                     *
 **---------------------------------------------------------------------------*/
#ifdef __cplusplus
    }
#endif

#endif  // _SIO_DRV_C