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PIO[ABCD] handlers improvement using ATSAM3X8E CLZ instruction #3983

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Merged
merged 1 commit into from
Jan 5, 2016
Merged

PIO[ABCD] handlers improvement using ATSAM3X8E CLZ instruction #3983

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64 changes: 32 additions & 32 deletions hardware/arduino/sam/cores/arduino/WInterrupts.c
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Original file line number Diff line number Diff line change
Expand Up @@ -134,47 +134,47 @@ extern "C" {
#endif

void PIOA_Handler(void) {
uint32_t isr = PIOA->PIO_ISR;
uint32_t i;
for (i=0; i<32; i++, isr>>=1) {
if ((isr & 0x1) == 0)
continue;
if (callbacksPioA[i])
callbacksPioA[i]();
}
uint32_t isr = PIOA->PIO_ISR;
uint8_t leading_zeros;
while((leading_zeros=__CLZ(isr))<32)
{
uint8_t pin=32-leading_zeros-1;
if(callbacksPioA[pin]) callbacksPioA[pin]();
isr=isr&(~(1<<pin));
}
}

void PIOB_Handler(void) {
uint32_t isr = PIOB->PIO_ISR;
uint32_t i;
for (i=0; i<32; i++, isr>>=1) {
if ((isr & 0x1) == 0)
continue;
if (callbacksPioB[i])
callbacksPioB[i]();
}
uint32_t isr = PIOB->PIO_ISR;
uint8_t leading_zeros;
while((leading_zeros=__CLZ(isr))<32)
{
uint8_t pin=32-leading_zeros-1;
if(callbacksPioB[pin]) callbacksPioB[pin]();
isr=isr&(~(1<<pin));
}
}

void PIOC_Handler(void) {
uint32_t isr = PIOC->PIO_ISR;
uint32_t i;
for (i=0; i<32; i++, isr>>=1) {
if ((isr & 0x1) == 0)
continue;
if (callbacksPioC[i])
callbacksPioC[i]();
}
uint32_t isr = PIOC->PIO_ISR;
uint8_t leading_zeros;
while((leading_zeros=__CLZ(isr))<32)
{
uint8_t pin=32-leading_zeros-1;
if(callbacksPioC[pin]) callbacksPioC[pin]();
isr=isr&(~(1<<pin));
}
}

void PIOD_Handler(void) {
uint32_t isr = PIOD->PIO_ISR;
uint32_t i;
for (i=0; i<32; i++, isr>>=1) {
if ((isr & 0x1) == 0)
continue;
if (callbacksPioD[i])
callbacksPioD[i]();
}
uint32_t isr = PIOD->PIO_ISR;
uint8_t leading_zeros;
while((leading_zeros=__CLZ(isr))<32)
{
uint8_t pin=32-leading_zeros-1;
if(callbacksPioD[pin]) callbacksPioD[pin]();
isr=isr&(~(1<<pin));
}
}

#ifdef __cplusplus
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