Sharing of functions that may be used in bare metal programs based on S3C6410

Files and functions that may be used in bare metal programs

#include“system.h”

/*************************************************************************************************************************

* Function: voidSetEINT_TriggerMode(u8EINT0_N, u8Trigger)

*Function: Set the external interrupt group 0 trigger mode

* Parameters: EINT0_N: interrupt source number (see: Interrupt group 0 number definition); Trigger: trigger mode (EXT_LowLevel: low level trigger; EXT_HighLevel: high level trigger;

EXT_NegEdge: falling edge trigger; EXT_PosEdge: rising edge trigger; EXT_Edge: edge trigger)

*Return: None

*Depends on: underlying macro definitions

*Author: cp1300@139.com

* Date: 20120304

*Last modified: 20120304

* Note: No. GPN0---》GPN1 5G PL8---》GPL14GPM0---》GPM4, interrupt settings must be set two by two

*************************************************************************************************************************/

voidSetEINT0_TriggerMode（vu8EINT0_N，vu8Trigger）

{

if（EINT0_N&0x80）//EINT0CON1

{

EINT0_N-=0x80; //subtract flag

rEINT0CON1&=~（7《

rEINT0CON1|=Trigger《

}

else//EINT0CON0

{

rEINT0CON0&=~（7《

rEINT0CON0|=Trigger《

}

}

/*************************************************************************************************************************

* Function: void Set_GateClk(u8HCLK_DIV, Func tionalStateEnable )

* Function: CLK clock gating setting (HCLK, PCLK, SCLK)

*Parameters: CLK_DIV: peripheral (see: CLK gated clock definition); Enable = ENABLE, 1 to enable; = DISABLE, 0 to disable

*Return: None

*Depends on: underlying macro definitions

*Author: cp1300@139.com

*Time: 20120305

*Last modified: 20121005

* Note: PCLK_GATE adds the mark 0x40, SCLK_GATE adds the mark 0x80;

*************************************************************************************************************************/

voidSet_GateClk（vu8CLK_DIV，FuncTIonalStateEnable）

{

vu32*P=&rHCLK_GATE;

if（CLK_DIV&0x80）//SCLK

{

P=&rSCLK_GATE;

CLK_DIV-=0x80; //Remove the mark

}

elseif（CLK_DIV&0x40）//PCLK

{

P=&rPCLK_GATE;

CLK_DIV-=0x40; //Remove the mark

}

if (Enable == ENABLE) // Enable

*P|=1《

else//disability

*P&=~（1《

}

/*************************************************************************************************************************

* Function: voidSet_INTtoIRQ(u8INT_N)

*Function: Set an interrupt as IRQ

* Parameters: INT_N: interrupt number (see: Interrupt source number definition);

*Return: None

*Depends on: underlying macro definitions

*Author: cp1300@139.com

*Time: 20120305

*Last modified: 20120305

*Description: Set an interrupt to normal interrupt mode

*************************************************************************************************************************/

voidSet_INTtoIRQ（vu8INT_N）

{

if（INT_N》31）//VIC1

{

INT_N-=32;

VIC1-》INTSELECT&=~（1《

}

else//VIC0

VIC0-》INTSELECT&=~（1《

}

/*************************************************************************************************************************

* Function: voidSet_INTtoFIQ(u8INT_N)

*Function: Set an interrupt to FIQ

* Parameters: INT_N: interrupt number (see: Interrupt source number definition);

*Return: None

*Depends on: underlying macro definitions

*Author: cp1300@139.com

*Time: 20120305

*Last modified: 20120305

* Description: Set an interrupt to fast interrupt mode

*************************************************************************************************************************/

voidSet_INTtoFIQ（vu8INT_N）

{

if（INT_N》31）//VIC1

{

INT_N-=32;

VIC1-》INTSELECT|=（1《

}

else//VIC0

VIC0-》INTSELECT|=（1《

}

/**********************************************************************************