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MCUXpresso: Fix the LPC GPIO IRQ driver 

The IRQ disable was always disabling both rising
and falling edges of the interrupt thereby causing
failures in cases when one of the two should stay enabled.

Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
pull/11064/head
Mahesh Mahadevan 2019-07-17 15:18:59 -05:00
parent 3d5489a6f8
commit 34619e55a6
1 changed files with 27 additions and 8 deletions
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35
targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC/gpio_irq_api.c
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@ -67,6 +67,13 @@ int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32
return -1;
}
obj->pin = pin & 0x1F;
obj->port = pin / 32;
if (obj->port >= INTERRUPT_PORTS) {
return -1;
}
irq_handler = handler;
for (i = 0; i < NUMBER_OF_GPIO_INTS; i++) {
@ -82,13 +89,6 @@ int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32
return -1;
}
obj->pin = pin & 0x1F;
obj->port = pin / 32;
if (obj->port >= INTERRUPT_PORTS) {
return -1;
}
/* Connect trigger sources to PINT */
INPUTMUX_Init(INPUTMUX);
@ -139,7 +139,26 @@ void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable)
}
}
} else {
PINT_PinInterruptConfig(PINT, (pint_pin_int_t)obj->ch, kPINT_PinIntEnableNone, NULL);
if (event == IRQ_RISE) {
/* Checking if falling edge interrupt is already enabled on this pin */
if (PINT->IENF & (1U << obj->ch)) {
/* Leave falling edge interrupt enabled */
PINT_PinInterruptConfig(PINT, (pint_pin_int_t)obj->ch, kPINT_PinIntEnableFallEdge, pint_intr_callback);
} else {
/* Both rising and falling edge interrupt are disabled */
PINT_PinInterruptConfig(PINT, (pint_pin_int_t)obj->ch, kPINT_PinIntEnableNone, pint_intr_callback);
}
} else {
/* Checking if rising edge interrupt is already enabled on this pin */
if (PINT->IENR & (1U << obj->ch)) {
/* Leave rising edge interrupt enabled */
PINT_PinInterruptConfig(PINT, (pint_pin_int_t)obj->ch, kPINT_PinIntEnableRiseEdge, pint_intr_callback);
} else {
/* Both rising and falling edge interrupt are disabled */
PINT_PinInterruptConfig(PINT, (pint_pin_int_t)obj->ch, kPINT_PinIntEnableNone, pint_intr_callback);
}
}
}
}