rt_err_t gd32_pin_detach_irq(struct rt_device *device, rt_int32_t pin) { const struct pin_index *index; rt_base_t level; rt_int32_t hdr_index = -1; index = get_pin(pin); if (index == RT_NULL) { return RT_EINVAL; } hdr_index = bit2bitno(index->pin); if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map)) { return RT_EINVAL; } level = rt_hw_interrupt_disable(); if (pin_irq_hdr_tab[hdr_index].pin == -1) { rt_hw_interrupt_enable(level); return RT_EOK; } pin_irq_hdr_tab[hdr_index].pin = -1; pin_irq_hdr_tab[hdr_index].hdr = RT_NULL; pin_irq_hdr_tab[hdr_index].mode = 0; pin_irq_hdr_tab[hdr_index].args = RT_NULL; rt_hw_interrupt_enable(level); return RT_EOK; }
rt_inline const struct pin_irq_map *get_pin_irq_map(rt_uint32_t pinbit) { rt_int32_t mapindex = bit2bitno(pinbit); if (mapindex < 0 || mapindex >= ITEM_NUM(pin_irq_map)) { return RT_NULL; } return &pin_irq_map[mapindex]; };
rt_err_t gd32_pin_attach_irq(struct rt_device *device, rt_int32_t pin, rt_uint32_t mode, void (*hdr)(void *args), void *args) { const struct pin_index *index; rt_base_t level; rt_int32_t hdr_index = -1; index = get_pin(pin); if (index == RT_NULL) { return RT_EINVAL; } hdr_index = bit2bitno(index->pin); if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map)) { return RT_EINVAL; } level = rt_hw_interrupt_disable(); if (pin_irq_hdr_tab[hdr_index].pin == pin && pin_irq_hdr_tab[hdr_index].hdr == hdr && pin_irq_hdr_tab[hdr_index].mode == mode && pin_irq_hdr_tab[hdr_index].args == args) { rt_hw_interrupt_enable(level); return RT_EOK; } if (pin_irq_hdr_tab[hdr_index].pin != -1) { rt_hw_interrupt_enable(level); return RT_EFULL; } pin_irq_hdr_tab[hdr_index].pin = pin; pin_irq_hdr_tab[hdr_index].hdr = hdr; pin_irq_hdr_tab[hdr_index].mode = mode; pin_irq_hdr_tab[hdr_index].args = args; rt_hw_interrupt_enable(level); return RT_EOK; }
rt_err_t gd32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_t enabled) { const struct pin_index *index; const struct pin_irq_map *irqmap; rt_base_t level; rt_int32_t hdr_index = -1; exti_trig_type_enum trigger_mode; index = get_pin(pin); if (index == RT_NULL) { return RT_EINVAL; } if (enabled == PIN_IRQ_ENABLE) { hdr_index = bit2bitno(index->pin); if (hdr_index < 0 || hdr_index >= ITEM_NUM(pin_irq_map)) { return RT_EINVAL; } level = rt_hw_interrupt_disable(); if (pin_irq_hdr_tab[hdr_index].pin == -1) { rt_hw_interrupt_enable(level); return RT_EINVAL; } irqmap = &pin_irq_map[hdr_index]; switch (pin_irq_hdr_tab[hdr_index].mode) { case PIN_IRQ_MODE_RISING: trigger_mode = EXTI_TRIG_RISING; break; case PIN_IRQ_MODE_FALLING: trigger_mode = EXTI_TRIG_FALLING; break; case PIN_IRQ_MODE_RISING_FALLING: trigger_mode = EXTI_TRIG_BOTH; break; default: rt_hw_interrupt_enable(level); return RT_EINVAL; } //rcu_periph_clock_enable(RCU_AF); /* enable and set interrupt priority */ nvic_irq_enable(irqmap->irqno, 5U); /* connect EXTI line to GPIO pin */ syscfg_exti_line_config(index->port_src, index->pin_src); /* configure EXTI line */ exti_init((exti_line_enum)(index->pin), EXTI_INTERRUPT, trigger_mode); exti_interrupt_flag_clear((exti_line_enum)(index->pin)); rt_hw_interrupt_enable(level); } else if (enabled == PIN_IRQ_DISABLE) { irqmap = get_pin_irq_map(index->pin); if (irqmap == RT_NULL) { return RT_EINVAL; } nvic_irq_disable(irqmap->irqno); } else { return RT_EINVAL; } return RT_EOK; }
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) { pin_irq_hdr(bit2bitno(GPIO_Pin)); }
rt_err_t stm32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_t enabled) { const struct pin_index *index; const struct pin_irq_map *irqmap; rt_base_t level; rt_int32_t irqindex = -1; GPIO_InitTypeDef GPIO_InitStruct; index = get_pin(pin); if (index == RT_NULL) { return RT_ENOSYS; } if (enabled == PIN_IRQ_ENABLE) { irqindex = bit2bitno(index->pin); if (irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map)) { return RT_ENOSYS; } level = rt_hw_interrupt_disable(); if (pin_irq_hdr_tab[irqindex].pin == -1) { rt_hw_interrupt_enable(level); return RT_ENOSYS; } irqmap = &pin_irq_map[irqindex]; /* GPIO Periph clock enable */ index->rcc(); /* Configure GPIO_InitStructure */ GPIO_InitStruct.Pin = index->pin; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; switch (pin_irq_hdr_tab[irqindex].mode) { case PIN_IRQ_MODE_RISING: GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING; break; case PIN_IRQ_MODE_FALLING: GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING; break; case PIN_IRQ_MODE_RISING_FALLING: GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING_FALLING; break; } HAL_GPIO_Init(index->gpio, &GPIO_InitStruct); HAL_NVIC_SetPriority(irqmap->irqno, 5, 0); HAL_NVIC_EnableIRQ(irqmap->irqno); rt_hw_interrupt_enable(level); } else if (enabled == PIN_IRQ_DISABLE) { irqmap = get_pin_irq_map(index->pin); if (irqmap == RT_NULL) { return RT_ENOSYS; } HAL_NVIC_DisableIRQ(irqmap->irqno); } else { return RT_ENOSYS; } return RT_EOK; }