sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Need additional IRQ mapping

Browse Source 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2734 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2010-06-06 17:22:05 +00:00
parent 7f382114a0
commit 2b120a3269
1 changed files with 59 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
arch/arm/src/lpc17xx/lpc17_gpioint.c
View File

@ -241,12 +241,70 @@ static void lpc17_setintedge(uint32_t intbase, unsigned int pin, unsigned int ed
* Name: lpc17_irq2port
*
* Description:
* Get the stored interrupt edge configuration.
* Given an IRQ number, return the GPIO port number (0 or 2) of the interrupt.
*
****************************************************************************/
static int lpc17_irq2port(int irq)
{
/* Set 1: 12 interrupts p0.0-p0.11 */
if (irq >= LPC17_VALID_FIRST0L && irq < (LPC17_VALID_FIRST0L+LPC17_VALID_NIRQS0L)
{
return 0;
}
/* Set 2: 16 interrupts p0.15-p0.30 */
else if (irq >= LPC17_VALID_FIRST0H && irq < (LPC17_VALID_FIRST0H+LPC17_VALID_NIRQS0H)
{
return 0;
}
/* Set 3: 14 interrupts p2.0-p2.13 */
else if (irq >= LPC17_VALID_NIRQS2 && irq < (LPC17_VALID_FIRST2+LPC17_VALID_NIRQS2)
{
return 2;
}
return -EINVAL;
}
/****************************************************************************
* Name: lpc17_irq2pin
*
* Description:
* Given an IRQ number, return the GPIO pin number (0..31) of the interrupt.
*
****************************************************************************/
static int lpc17_irq2port(int irq)
{
/* Set 1: 12 interrupts p0.0-p0.11 */
if (irq >= LPC17_VALID_FIRST0L && irq < (LPC17_VALID_FIRST0L+LPC17_VALID_NIRQS0L)
{
return irq - LPC17_VALID_FIRST0L + LPC17_VALID_SHIFT0L;
}
/* Set 2: 16 interrupts p0.15-p0.30 */
else if (irq >= LPC17_VALID_FIRST0H && irq < (LPC17_VALID_FIRST0H+LPC17_VALID_NIRQS0H)
{
return irq - LPC17_VALID_FIRST0H + LPC17_VALID_SHIFT0H;
12
}
/* Set 3: 14 interrupts p2.0-p2.13 */
else if (irq >= LPC17_VALID_NIRQS2 && irq < (LPC17_VALID_FIRST2+LPC17_VALID_NIRQS2)
{
return irq - LPC17_VALID_FIRST0H + LPC17_VALID_SHIFT2;
}
return -EINVAL;
}
/****************************************************************************
* Global Functions