常规GPIO翻转切换输出，如果我们使用的是别人家的MCU，那么就是读改写的过程，比如下面这样子：/**
* [url=home.php?mod=space&uid=247401]@brief[/url] Toggle the specified GPIO pin.
* @param GPIOx where x can be (A..F) to select the GPIO peripheral for STM32G0xx family
* @param GPIO_Pin specifies the pin to be toggled.
* This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
* @retval None
*/
void HAL_GPIO_TogglePin(GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin)
{
uint32_t odr;
/* Check the parameters */
assert_param(IS_GPIO_PIN(GPIO_Pin));
/* get current Output Data Register value */
odr = GPIOx->ODR;
/* Set selected pins that were at low level, and reset ones that were high */
GPIOx->BSRR = ((odr & GPIO_Pin) << GPIO_NUMBER) | (~odr & GPIO_Pin);
}
但如果是MSPM0，那就是下面这个样子：
__STATIC_INLINE void DL_GPIO_togglePins(GPIO_Regs* gpio, uint32_t pins)
{
gpio->DOUTTGL31_0 = pins;
}
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