fixed some bugs about interrupt
When I used the pin's interrupt, I always get a FALSE state.
So I read the drv_gpio.c and has found that function gpio_exti_source_select has not  truly set yet and the GPIO input mode and the EXTI_(bitno) should be correct.
@@ -350,8 +350,6 @@ static rt_err_t gd32vf_pin_irq_enable(struct rt_device *device, rt_base_t pin,
return RT_ENOSYS;
}
- /* configure pin as input */
- gpio_init(index->gpio_periph, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, index->pin);
if (enabled == PIN_IRQ_ENABLE)
{
irqindex = bit2bitno(index->pin);
@@ -372,24 +370,31 @@ static rt_err_t gd32vf_pin_irq_enable(struct rt_device *device, rt_base_t pin,
/* enable and set EXTI interrupt to the lowest priority */
eclic_irq_enable(irqmap->irqno, 1, 1);
- gpio_exti_source_select(GPIO_PORT_SOURCE_GPIOA, GPIO_PIN_SOURCE_0);
+ /* select SOURCE_PORT_x and SOURCE_PIN_x */
+ gpio_exti_source_select(index->index >> 4, irqindex);
/* Configure GPIO_InitStructure */
switch (pin_irq_hdr_tab[irqindex].mode)
{
case PIN_IRQ_MODE_RISING:
+ gpio_init( index->gpio_periph, GPIO_MODE_IPD, GPIO_OSPEED_50MHZ,
+ index->pin );
exti_init(EXTI_(irqindex), EXTI_INTERRUPT, EXTI_TRIG_RISING);
break;
case PIN_IRQ_MODE_FALLING:
+ gpio_init( index->gpio_periph, GPIO_MODE_IPU, GPIO_OSPEED_50MHZ,
+ index->pin );
exti_init(EXTI_(irqindex), EXTI_INTERRUPT, EXTI_TRIG_FALLING);
break;
case PIN_IRQ_MODE_RISING_FALLING:
+ gpio_init(index->gpio_periph, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ,
+ index->pin);
exti_init(EXTI_(irqindex), EXTI_INTERRUPT, EXTI_TRIG_BOTH);
break;
}
pin_irq_enable_mask |= irqmap->pinbit;
-
- exti_interrupt_flag_clear(EXTI_(index->pin));
+ /* irqindex should be bitno and then EXTI_(x) can be the bit */
+ exti_interrupt_flag_clear(EXTI_(irqindex));
rt_hw_interrupt_enable(level);
}
@@ -408,7 +413,7 @@ static rt_err_t gd32vf_pin_irq_enable(struct rt_device *device, rt_base_t pin,
pin_irq_enable_mask &= ~irqmap->pinbit;
eclic_irq_disable(irqmap->irqno);
- exti_interrupt_flag_clear(EXTI_(index->pin));
+ exti_interrupt_flag_clear(EXTI_(irqindex));
rt_hw_interrupt_enable(level);
}
