没有产生中断，不知道什么原因

我想用不同的方式实现IO的中断功能。你知道我哪里错了吗？

void PT_GpioInit() { gpio_config_t io_conf; //disable interrupt io_conf.intr_type = GPIO_PIN_INTR_DISABLE; //set as output mode io_conf.mode = GPIO_MODE_OUTPUT; //bit mask of the pins that you want to set,e.g.GPIO18/19 io_conf.pin_bit_mask = GPIO_OUTPUT_PIN_SEL; //disable pull-down mode io_conf.pul...