pio.c

嵌入式系统

    {
        case APD_PIOA:  *muxdata1 = *(volatile unsigned long *)(mux1_reg);
                        *muxdata2 = *(volatile unsigned long *)(mux2_reg);
                        break;
        case APD_PIOB:  *muxdata1 = *(volatile unsigned long *)(mux1_reg);
                        *muxdata2 = *(volatile unsigned long *)(mux2_reg);
                        break;
        case APD_PIOC:  *muxdata1 = *(volatile APD_USHORT *)(mux1_reg);
                        *muxdata2 = *(volatile APD_USHORT *)(mux2_reg);
                        break;
        case APD_PIOD:  *muxdata1 = *(volatile APD_USHORT *)(mux1_reg);
                        break;
        default:        break;
    }
}

/******************************************************************************
@@ [Name]       : apd_PIOSetAsInput
@@ [Summary]    : This function set the specified pins as input for the PIO port
@@ [Argument]   : port: specify the PIO port number
@@                APD_PIOA for portA
@@                APD_PIOB for portB
@@                APD_PIOC for portC
@@                APD_PIOD for portD
@@                portvalue:    specify which pins in the port is to be set as input
@@                Valid range is 0 to 0xFFFFFFFF
@@ [Return]     : None
@@ [Desc]       : Set the specified pins as input.
@@ [Note]       : (1) For LH79531: APD_PIOF is not valid because it cannot be used as a PIO function.
@@                (2) For LH79532 and LH79533: APD_PIOE and APD_PIOF are not used.
@@ [History]    : 
@@ [END]
******************************************************************************/

void apd_PIOSetAsInput(APD_PIO_PORT port, unsigned long port_value)
{
    unsigned long control_reg;
    control_reg = APD_PIOBASE + (port * APD_PIOCH_OFST) + APD_PIOCTRL_OFST;
    *(volatile unsigned long *)control_reg &= ~port_value;
}

/******************************************************************************
@@ [Name]       : apd_PIOSetAsOutput
@@ [Summary]    : This function set the specified pins as output for the PIO port
@@ [Argument]   : port: specify the PIO port number
@@                APD_PIOA for portA
@@                APD_PIOB for portB
@@                APD_PIOC for portC
@@                APD_PIOD for portD
@@                portvalue:    specify which pins in the port is to be set as output
@@                Valid range is 0 to 0xFFFFFFFF
@@ [Return]     : None
@@ [Desc]       : Set the specified pins as output.
@@ [Note]       : (1) For LH79531: APD_PIOF is not valid because it cannot be used as a PIO function.
@@                (2) For LH79532 and LH79533: APD_PIOE and APD_PIOF are not used.
@@ [History]    : 
@@ [END]
******************************************************************************/

void apd_PIOSetAsOutput(APD_PIO_PORT port, unsigned long port_value)
{
    unsigned long control_reg;
    control_reg = APD_PIOBASE + (port * APD_PIOCH_OFST) + APD_PIOCTRL_OFST;
    *(volatile unsigned long *)control_reg |= port_value;
}

/******************************************************************************
@@ [Name]       : apd_PIOSetPortData
@@ [Summary]    : This function writes the port value into the specified PIO port
@@ [Argument]   : port: specify the PIO port number
@@                APD_PIOA for portA
@@                APD_PIOB for portB
@@                APD_PIOC for portC
@@                APD_PIOD for portD
@@                portvalue:    specify the value to be written in the port
@@                Valid range is 0 to 0xFFFFFFFF
@@ [Return]     : None
@@ [Desc]       : Writes the port value into the specified port
@@ [Note]       : (1) For LH79531: APD_PIOF is not valid because it cannot be used as a PIO function.
@@                (2) For LH79532 and LH79533: APD_PIOE and APD_PIOF are not used.
@@ [History]    :
******************************************************************************/

void apd_PIOSetPortData(APD_PIO_PORT port, unsigned long port_value)
{
    unsigned long data_reg;
    data_reg = APD_PIOBASE + (port * APD_PIOCH_OFST) + APD_PIODATA_OFST;
    *(volatile unsigned long *)data_reg = port_value;
}

/******************************************************************************
@@ [Name]       : apd_PIOSetBit
@@ [Summary]    : This function sets a bit of the specified port to 1
@@ [Argument]   : port: specify the PIO port number
@@                APD_PIOA for portA
@@                APD_PIOB for portB
@@                APD_PIOC for portC
@@                APD_PIOD for portD
@@                APD_PIOE for portE (For LH79531 only)
@@                bit_num:  specify which bit to set to 1
@@                Valid range is 0 to 31
@@ [Return]     : None
@@ [Desc]       : Set a sinlge bit to 1 for the specific PIO port.
@@ [Note]       : (1) For LH79531: APD_PIOF is not valid because it cannot be used as a PIO function.
@@                (2) For LH79532 and LH79533: APD_PIOE and APD_PIOF are not used.
@@
@@ [History]    : 10/11/2000    Tan WK      Version 1.0
******************************************************************************/

void apd_PIOSetBit(APD_PIO_PORT port, unsigned char bit_num)
{
    unsigned long dataset_reg;

    dataset_reg = APD_PIOBASE + (port* APD_PIOCH_OFST) + APD_PIODATASET_OFST;

    *(volatile unsigned long *)dataset_reg = APD_PIO_BITSHIFT << bit_num;
}

/******************************************************************************
@@ [Name]       : apd_PIOClrBit
@@ [Summary]    : This function clears a bit of the specified port to 0
@@ [Argument]   : port: specify the PIO port number
@@                APD_PIOA for portA
@@                APD_PIOB for portB
@@                APD_PIOC for portC
@@                APD_PIOD for portD
@@                APD_PIOE for portE (For LH79531 only)
@@                bit_num:  specify which bit to clear to 0
@@                Valid range is 0 to 31
@@ [Return]     : None
@@ [Desc]       : Clear a sinlge bit to 0 for the specific PIO port.
@@ [Note]       : (1) For LH79531: APD_PIOF is not valid because it cannot be used as a PIO function.
@@                (2) For LH79532 and LH79533: APD_PIOE and APD_PIOF are not used.
@@ [History]    : 10/11/2000    Tan WK      Version 1.0
@@                18/01/2001    Tan WK      Version 1.1 Remove OR function, write
@@                                          bitnum into PIODataSet directly
@@                19/02/2001    Tan WK      Version 1.2 Calculate address.
@@                01/06/2001    Tan WK      Version 2.0  No change
@@                29/08/2001    Teo LL      Version 3.0  No change for LH79533
@@ [END]
******************************************************************************/

void apd_PIOClrBit(APD_PIO_PORT port, unsigned char bit_num)
{
    unsigned long datareset_reg;
    datareset_reg = APD_PIOBASE + (port * APD_PIOCH_OFST) + APD_PIODATARESET_OFST;
    *(volatile unsigned long *)datareset_reg = APD_PIO_BITSHIFT << bit_num;
}

/*****************************************************************************
	project Jn-00 PIO initial 
	set PIOA,PIOB,PIOC,PIOD as output/input or function1,2,3
*****************************************************************************/
void apd_PIOInit(void)
{
	unsigned long mux_data2;
	unsigned long mux_data1;
	mux_data1=0x0007fff;	//PIOA 0~14 as LCD driver.(CASIO)
	mux_data2=0x1fb8000;	//Reg: PIOA 19~24 as function3(CASIO)
	
/* setup PIOA */
	apd_PIOSetMuxFunc(APD_PIOA,mux_data1,mux_data2);
/* set PIOA output & input */
	apd_PIOSetAsOutput(APD_PIOA,0x1147ff4);	
	apd_PIOSetAsInput(APD_PIOA,0x0eb800b);
	
/* setup PIOB */
	apd_PIOSetMuxFunc(APD_PIOB,0x40070,0x6000);
/* set PIOB output &input */
	apd_PIOSetAsOutput(APD_PIOB,0xadff08);
	apd_PIOSetAsInput(APD_PIOB,0x5200f7);
	
/* setup PIOC */	
	apd_PIOSetMuxFunc(APD_PIOC,0x04,0x00);
/* set PIOC output & input */
	apd_PIOSetAsOutput(APD_PIOC,0x3447);
	apd_PIOSetAsInput(APD_PIOC,0xcbb8);	

/* setup PIOD */
	apd_PIOSetMuxFunc(APD_PIOD,0x00,0xffff);
/* set PIOD output & input */
	apd_PIOSetAsOutput(APD_PIOD,0x00);
	apd_PIOSetAsInput(APD_PIOD,0xffff);
}