lld_gpio.c

本程序为ST公司开发的源代码

/*____________________________________________________________________________
| FILE:         lld_gpio.c
| PROJECT:      OS20_ACCORDO+
| SW-COMPONENT: 
|_____________________________________________________________________________
| DESCRIPTION:  Low level driver for General Purpose I/O Ports                                      
|_____________________________________________________________________________
| COPYRIGHT:    (c) 2005 STMicroelectronics, Arzano (ITALY)
| HISTORY:
| Date      | Modification               					| Author
|_____________________________________________________________________________
| 05.10.27  | Initial revision								| M. De Martino           
|____________________________________________________________________________*/

#include "lld_gpio.h"

#ifdef __cplusplus
extern "C" {
#endif

/************************************************************************
| external declarations                    
|-----------------------------------------------------------------------*/

/************************************************************************
| defines and macros (scope: module-local)
|-----------------------------------------------------------------------*/

/************************************************************************
| typedefs (scope: module-local)
|-----------------------------------------------------------------------*/

/************************************************************************
| variable definitions (scope: global)
|-----------------------------------------------------------------------*/

/************************************************************************
| variable definitions (scope: module-local)
|-----------------------------------------------------------------------*/
/* Place Gpio's pheripheral according to scatter file */
#pragma arm section zidata = "GpioA_map"
	volatile rGpio GpioA;
	
#pragma arm section zidata

#pragma arm section zidata = "GpioB_map"
	volatile rGpio GpioB;
	
#pragma arm section zidata
 
/************************************************************************
| function prototypes (scope: module-local)
|-----------------------------------------------------------------------*/

/************************************************************************
| function implementations (scope: module-local)
|-----------------------------------------------------------------------*/

/************************************************************************
| function implementations (scope: global)
|-----------------------------------------------------------------------*/
/************************************************************************
*                                                                       *
* FUNCTIONS                                                             *
*                                                                       *
*      LLD_GPIO_SetOutput                                               *
*                                                                       *
* DESCRIPTION                                                           *
*                                                                       *
*      Program the u8Pin of the id GPIO port as output push pull.       *
*                                                                       *
* CALLS                                                                 *
*                                                                       *
*      LLD macros                                                       *
*                                                                       *
* INPUTS                                                                *
*                                                                       *
*      GPIO_ID id: GPIO identificator                                   *
*      tU8 u8in: Pin number                                             *
*                                                                       *
* OUTPUTS                                                               *
*                                                                       *
*      None                                                             *
*                                                                       *
************************************************************************/
tVoid LLD_GPIO_SetPPOutput(GPIO_ID id, tU8 u8Pin)
{
   /* The Output configuration is Pc0=1, Pc1=0, Pc2=1 */
   tU16 u16Buffer;

   if( GPIO_A == id )
   {
      u16Buffer = rd16_reg(GpioA,Pc0);
      wr16_reg(GpioA,Pc0,u16Buffer | (1<<u8Pin)); /* set bit u8Pin. */

      u16Buffer = rd16_reg(GpioA,Pc1);
      wr16_reg(GpioA,Pc1,u16Buffer & ~(1<<u8Pin)); /* clear bit u8Pin. */

      u16Buffer = rd16_reg(GpioA,Pc2);
      wr16_reg(GpioA,Pc2,u16Buffer | (1<<u8Pin)); /* set bit u8Pin. */
   }

   if( GPIO_B == id )
   {
      u16Buffer = rd16_reg(GpioB,Pc0);
      wr16_reg(GpioB,Pc0,u16Buffer | (1<<u8Pin)); /* set bit u8Pin. */

      u16Buffer = rd16_reg(GpioB,Pc1);
      wr16_reg(GpioB,Pc1,u16Buffer & ~(1<<u8Pin)); /* clear bit u8Pin. */

      u16Buffer = rd16_reg(GpioB,Pc2);
      wr16_reg(GpioB,Pc2,u16Buffer | (1<<u8Pin)); /* set bit u8Pin. */
   }
}

/************************************************************************
*                                                                       *
* FUNCTIONS                                                             *
*                                                                       *
*      LLD_GPIO_SetOutput                                               *
*                                                                       *
* DESCRIPTION                                                           *
*                                                                       *
*      Program the u8Pin of the id GPIO port as output open drain.      *
*                                                                       *
* CALLS                                                                 *
*                                                                       *
*      LLD macros                                                       *
*                                                                       *
* INPUTS                                                                *
*                                                                       *
*      GPIO_ID id: GPIO identificator                                   *
*      tU8 u8in: Pin number                                             *
*                                                                       *
* OUTPUTS                                                               *
*                                                                       *
*      None                                                             *
*                                                                       *
************************************************************************/
tVoid LLD_GPIO_SetODOutput(GPIO_ID id, tU8 u8Pin)
{
   /* The Output configuration is Pc0=0, Pc1=0, Pc2=1 */
   tU16 u16Buffer;

   if( GPIO_A == id )
   {
      u16Buffer = rd16_reg(GpioA,Pc0);
      wr16_reg(GpioA,Pc0,u16Buffer & ~(1<<u8Pin)); /* clear bit u8Pin. */

      u16Buffer = rd16_reg(GpioA,Pc1);
      wr16_reg(GpioA,Pc1,u16Buffer & ~(1<<u8Pin)); /* clear bit u8Pin. */

      u16Buffer = rd16_reg(GpioA,Pc2);
      wr16_reg(GpioA,Pc2,u16Buffer | (1<<u8Pin)); /* set bit u8Pin. */
   }

   if( GPIO_B == id )
   {
      u16Buffer = rd16_reg(GpioB,Pc0);
      wr16_reg(GpioB,Pc0,u16Buffer & ~(1<<u8Pin)); /* clear bit u8Pin. */

      u16Buffer = rd16_reg(GpioB,Pc1);
      wr16_reg(GpioB,Pc1,u16Buffer & ~(1<<u8Pin)); /* clear bit u8Pin. */

      u16Buffer = rd16_reg(GpioB,Pc2);
      wr16_reg(GpioB,Pc2,u16Buffer | (1<<u8Pin)); /* set bit u8Pin. */
   }
}

/************************************************************************
*                                                                       *
* FUNCTIONS                                                             *
*                                                                       *
*      LLD_GPIO_SetAFPPOutput                                           *
*                                                                       *
* DESCRIPTION                                                           *
*                                                                       *
*      Program the u8Pin of the id GPIO port as output alternate        *
*      function push pull                                               *
* CALLS                                                                 *
*                                                                       *
*      LLD macros                                                       *
*                                                                       *
* INPUTS                                                                *
*                                                                       *
*      GPIO_ID id: GPIO identificator                                   *
*      tU8 u8in: Pin number                                             *
*                                                                       *
* OUTPUTS                                                               *
*                                                                       *
*      None                                                             *
*                                                                       *
************************************************************************/
tVoid LLD_GPIO_SetAFPPOutput(GPIO_ID id, tU8 u8Pin)
{
   /* The Output configuration is Pc0=1, Pc1=1, Pc2=1 */
   tU16 u16Buffer;

   if( GPIO_A == id )
   {
      u16Buffer = rd16_reg(GpioA,Pc0);
      wr16_reg(GpioA,Pc0,u16Buffer | (1<<u8Pin)); /* set bit u8Pin. */

      u16Buffer = rd16_reg(GpioA,Pc1);
      wr16_reg(GpioA,Pc1,u16Buffer | (1<<u8Pin)); /* set bit u8Pin. */

      u16Buffer = rd16_reg(GpioA,Pc2);
      wr16_reg(GpioA,Pc2,u16Buffer | (1<<u8Pin)); /* set bit u8Pin. */
   }

   if( GPIO_B == id )
   {
      u16Buffer = rd16_reg(GpioB,Pc0);
      wr16_reg(GpioB,Pc0,u16Buffer | (1<<u8Pin)); /* set bit u8Pin. */

      u16Buffer = rd16_reg(GpioB,Pc1);
      wr16_reg(GpioB,Pc1,u16Buffer | (1<<u8Pin)); /* set bit u8Pin. */

      u16Buffer = rd16_reg(GpioB,Pc2);
      wr16_reg(GpioB,Pc2,u16Buffer | (1<<u8Pin)); /* set bit u8Pin. */
   }
}

/************************************************************************
*                                                                       *
* FUNCTIONS                                                             *
*                                                                       *
*      LLD_GPIO_SetAFODOutput                                             *
*                                                                       *
* DESCRIPTION                                                           *
*                                                                       *
*      Program the u8Pin of the id GPIO port as output alternate        *
*      function open drain.                                             *
* CALLS                                                                 *
*                                                                       *
*      LLD macros                                                       *
*                                                                       *
* INPUTS                                                                *
*                                                                       *
*      GPIO_ID id: GPIO identificator                                   *
*      tU8 u8in: Pin number                                             *
*                                                                       *
* OUTPUTS                                                               *