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[LPC11U68] Fix pin interrupt select offset 

* Fix incorrect comment
* Add offset value calculation by interrupt port number
pull/2747/head
Toyomasa Watarai 2016-09-20 15:24:56 +09:00
parent eccecd3735
commit d52498f2fa
1 changed files with 10 additions and 2 deletions
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12
hal/targets/hal/TARGET_NXP/TARGET_LPC11U6X/gpio_irq_api.c
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@ -59,7 +59,7 @@ void gpio_irq6(void) {handle_interrupt_in(6);}
void gpio_irq7(void) {handle_interrupt_in(7);}
int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id) {
// PINT only supprt PIO0_*, PIO1_* and from PIO2_0 to PIO0_7 interrupt
// PINT only supprt PIO0_*, PIO1_* and from PIO2_0 to PIO2_7 interrupt
if (pin >= P2_8) return -1;
irq_handler = handler;
@ -79,7 +79,15 @@ int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32
/* Enable AHB clock to the PIN, GPIO and IOCON domain. */
LPC_SYSCON->SYSAHBCLKCTRL |= ((1 << 19) | (1 << 16) | (1 << 7));
LPC_SYSCON->PINTSEL[obj->ch] = ((((pin >> PORT_SHIFT) & 0x3) * 24) + ((pin >> PIN_SHIFT) & 0x1F));
/* Gets offset value for each port */
uint32_t offset;
switch ((pin >> PORT_SHIFT) & 0x3) {
case 0: offset = 0; break; // PIO0[23:0]
case 1: offset = 24; break; // PIO1[31:0]
case 2: offset = 56; break; // PIO2[7:0]
}
/* Set the INTPIN number : offset + pin_number */
LPC_SYSCON->PINTSEL[obj->ch] = (offset + ((pin >> PIN_SHIFT) & 0x1F));
// Interrupt Wake-Up Enable
LPC_SYSCON->STARTERP0 |= (1 << obj->ch);