本帖最后由 **kfu 于 2013-6-4 11:33 编辑
这个不是判断问题，而是当初你在设置中断引脚的时候都是不能把PB1和PD1同时设置为中断源的。如果非要设置，后面设置的会把前面的覆盖掉的。- */**
- * ·[url=home.php?mod=space&uid=247401]@brief[/url] Selects the GPIO pin used as EXTI Line.
- * @param GPIO_PortSource: selects the GPIO port to be used as source for EXTI lines.
- * This parameter can be GPIO_PortSourceGPIOx where x can be (A..G).
- * @param GPIO_PinSource: specifies the EXTI line to be configured.
- * This parameter can be GPIO_PinSourcex where x can be (0..15).
- * @retval None
- */
- void GPIO_EXTILineConfig(uint8_t GPIO_PortSource, uint8_t GPIO_PinSource)
- {
- uint32_t tmp = 0x00;
- /* Check the parameters */
- assert_param(IS_GPIO_EXTI_PORT_SOURCE(GPIO_PortSource));
- assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource));
-
- tmp = ((uint32_t)0x0F) << (0x04 * (GPIO_PinSource & (uint8_t)0x03));
- AFIO->EXTICR[GPIO_PinSource >> 0x02] &= ~tmp;
- AFIO->EXTICR[GPIO_PinSource >> 0x02] |= (((uint32_t)GPIO_PortSource) << (0x04 * (GPIO_PinSource & (uint8_t)0x03)));
- }
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