GPIO_ResetBits()这个库函数的好多问题

暴躁小浣熊 · 发表于 2015-3-29 20:24:57

GPIO_ResetBits()这个库函数的功能、用法及参数定义，函数与引脚之间、函数与参数之间、函数与寄存器之间的联系
原谅我一个新手，什么都不懂~~

lycreturn · 发表于 2015-3-29 20:24:58

[mw_shl_code=c,true]慢慢来，自行下去翻译[/mw_shl_code] [mw_shl_code=c,true]/** * @brief Sets the selected data port bits. * @param GPIOx: where x can be (A..G) to select the GPIO peripheral. * @param GPIO_Pin: specifies the port bits to be written. * This parameter can be any combination of GPIO_Pin_x where x can be (0..15). * @retval None */ void GPIO_SetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin) { /* Check the parameters */ assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); assert_param(IS_GPIO_PIN(GPIO_Pin)); GPIOx->BSRR = GPIO_Pin; } /** * @brief Clears the selected data port bits. * @param GPIOx: where x can be (A..G) to select the GPIO peripheral. * @param GPIO_Pin: specifies the port bits to be written. * This parameter can be any combination of GPIO_Pin_x where x can be (0..15). * @retval None */ void GPIO_ResetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin) { /* Check the parameters */ assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); assert_param(IS_GPIO_PIN(GPIO_Pin)); GPIOx->BRR = GPIO_Pin; } [/mw_shl_code]