lld_gpio.c

本程序为ST公司开发的源代码

*                                                                       *
*      None                                                             *
*                                                                       *
************************************************************************/
tVoid LLD_GPIO_SetAFODOutput(GPIO_ID id, tU8 u8Pin)
{
   /* The Output configuration is Pc0=0, 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_SetInput                                                *
*                                                                       *
* DESCRIPTION                                                           *
*                                                                       *
*      Program the u8Pin of the id GPIO port as input.                  *
*                                                                       *
* CALLS                                                                 *
*                                                                       *
*      LLD macros                                                       *
*                                                                       *
* INPUTS                                                                *
*                                                                       *
*      GPIO_ID id: GPIO identificator                                   *
*      tU8 u8in: Pin number                                             *
*                                                                       *
* OUTPUTS                                                               *
*                                                                       *
*      None                                                             *
*                                                                       *
************************************************************************/
tVoid LLD_GPIO_SetInput(GPIO_ID id, tU8 u8Pin)
{
   /* The Input configuration is Pc0=1, Pc1=0, Pc2=0 */
   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)); /* clear 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)); /* clear bit u8Pin. */
   }
}

/************************************************************************
*                                                                       *
* FUNCTIONS                                                             *
*                                                                       *
*      LLD_GPIO_SetInput2                                               *
*                                                                       *
* DESCRIPTION                                                           *
*                                                                       *
*      Program the u8Pin of the id GPIO port as input, variant 010      *
*                                                                       *
* CALLS                                                                 *
*                                                                       *
*      LLD macros                                                       *
*                                                                       *
* INPUTS                                                                *
*                                                                       *
*      GPIO_ID id: GPIO identificator                                   *
*      tU8 u8in: Pin number                                             *
*                                                                       *
* OUTPUTS                                                               *
*                                                                       *
*      None                                                             *
*                                                                       *
************************************************************************/
tVoid LLD_GPIO_SetInput2(GPIO_ID id, tU8 u8Pin)
{
   /* The Input configuration is Pc0=0, Pc1=1, Pc2=0 */
   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)); /* set bit u8Pin. */

      u16Buffer = rd16_reg(GpioA,Pc2);
      wr16_reg(GpioA,Pc2,u16Buffer & ~(1<<u8Pin)); /* clear 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)); /* set bit u8Pin. */

      u16Buffer = rd16_reg(GpioB,Pc2);
      wr16_reg(GpioB,Pc2,u16Buffer & ~(1<<u8Pin)); /* clear bit u8Pin. */
   }
}

/************************************************************************
*                                                                       *
* FUNCTIONS                                                             *
*                                                                       *
*      LLD_GPIO_SetBiDirect                                             *
*                                                                       *
* DESCRIPTION                                                           *
*                                                                       *
*      Program the u8Pin of the id GPIO port as bidirectional.          *
*                                                                       *
* CALLS                                                                 *
*                                                                       *
*      LLD macros                                                       *
*                                                                       *
* INPUTS                                                                *
*                                                                       *
*      GPIO_ID id: GPIO identificator                                   *
*      tU8 u8in: Pin number                                             *
*                                                                       *
* OUTPUTS                                                               *
*                                                                       *
*      None                                                             *
*                                                                       *
************************************************************************/
tVoid LLD_GPIO_SetBiDirect(GPIO_ID id, tU8 u8Pin)
{
   /* The Input configuration is Pc0=1, Pc1=1, Pc2=0 */
   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)); /* clear 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)); /* clear bit u8Pin. */
   }
}

/************************************************************************
*                                                                       *
* FUNCTIONS                                                             *
*                                                                       *
*      LLD_GPIO_SetHiZ                                                  *
*                                                                       *
* DESCRIPTION                                                           *
*                                                                       *
*      Program the u8Pin of the id GPIO port as hi Z.                   *
*                                                                       *
* CALLS                                                                 *
*                                                                       *
*      LLD macros                                                       *
*                                                                       *
* INPUTS                                                                *
*                                                                       *
*      GPIO_ID id: GPIO identificator                                   *
*      tU8 u8in: Pin number                                             *
*                                                                       *
* OUTPUTS                                                               *
*                                                                       *
*      None                                                             *
*                                                                       *
************************************************************************/
tVoid LLD_GPIO_SetHiZ(GPIO_ID id, tU8 u8Pin)
{
   /* The Tristate configuration is Pc0=0, Pc1=0, Pc2=0 */
   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)); /* clear 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);