CC1310 GPIOinterupt例程里面 回调函数如何清中断

An array of @ref GPIO_CallbackFxn elements that is used to store
 *  callback function pointers for GPIO pins configured with interrupts.
 *  The indexes for these array elements correspond to the pins defined
 *  in the GPIO_pinConfig array. These function pointers can be defined
 *  statically by referencing the callback function name in the array
 *  element, or dynamically, by setting the array element to NULL and using
 *  GPIO_setCallback() at runtime to plug the callback entry.
 *  Pins not used for interrupts can be omitted from the callback array to
 *  reduce memory usage (if they are placed at the end of GPIO_pinConfig
 *  array). The callback function syntax should match the following:
 *  @code
 *  void (*GPIO_CallbackFxn)(uint_least8_t index);
 *  @endcode
 *  The index parameter is the same index that was passed to
 *  GPIO_setCallback(). This allows the same callback function to be used
 *  for multiple GPIO interrupts, by using the index to identify the GPIO
 *  that caused the interrupt.
 *  Keep in mind that the callback functions will be called in the context of
 *  an interrupt service routine and should be designed accordingly.  When an
 *  interrupt is triggered, the interrupt status of all (interrupt enabled) pins
 *  on a port will be read, cleared, and the respective callbacks will be
 *  executed.  Callbacks will be called in order from least significant bit to
 *  most significant bit.
 *  Below is an MSP432 device specific example of the GPIO_CallbackFxn array:
 *  @code
 *  //
 *  // Array of callback function pointers
 *  // NOTE: The order of the pin configurations must coincide with what was
 *  //       defined in MSP_EXP432P401R.h
 *  // NOTE: Pins not used for interrupts can be omitted from callbacks array
 *  //       to reduce memory usage (if placed at end of gpioPinConfigs
 *  //       array).
 *  //
 *  GPIO_CallbackFxn gpioCallbackFunctions[] = {
 *      // MSP_EXP432P401R_GPIO_S1
 *      NULL,
 *      // MSP_EXP432P401R_GPIO_S2
 *      NULL
 *  };
 *  @endcode
 *

看下上面的说明：

* Keep in mind that the callback functions will be called in the context of
* an interrupt service routine and should be designed accordingly. When an
* interrupt is triggered, the interrupt status of all (interrupt enabled) pins
* on a port will be read, cleared, and the respective callbacks will be
* executed. Callbacks will be called in order from least significant bit to
* most significant bit.