GPIO引脚初始化编程：STM32F103芯片DAC的两个模拟

2025-04-06 02:00:43

推荐回答（1个）

回答1：

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
    
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
    DAC_InitStructure.DAC_Trigger = DAC_Trigger_Software;
    DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;
    DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Disable;
    DAC_Init(DAC_Channel_1, &DAC_InitStructure);
    DAC_Init(DAC_Channel_2, &DAC_InitStructure);