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我从G473的DAC 3生成输出信号，并在跟随器模式下通过OPAMP 1输出该值。运算放大器引脚的输出***保持在低电平。 我将CUBEIDE中的DAC设置为： static void MX_DAC3_Init(void) { DAC_ChannelConfTypeDef sConfig = {0}; hdac3.Instance = DAC3; if (HAL_DAC_Init(&hdac3) != HAL_OK) { Error_Handler(); } /** DAC channel OUT1 config */ sConfig.DAC_HighFrequency = DAC_HIGH_FREQUENCY_INTERFACE_MODE_AUTOMATIC; sConfig.DAC_DMADoubleDataMode = DISABLE; sConfig.DAC_SignedFormat = DISABLE; sConfig.DAC_SampleAndHold = DAC_SAMPLEANDHOLD_DISABLE; sConfig.DAC_Trigger = DAC_TRIGGER_NONE; sConfig.DAC_Trigger2 = DAC_TRIGGER_NONE; sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_DISABLE; sConfig.DAC_ConnectOnChipPeripheral = DAC_CHIPCONNECT_INTERNAL; sConfig.DAC_UserTrimming = DAC_TRIMMING_FACTORY; if (HAL_DAC_ConfigChannel(&hdac3, &sConfig, DAC_CHANNEL_1) != HAL_OK){ Error_Handler(); }}我将CUBEIDE中的OPAMP设置为： static void MX_OPAMP1_Init(void){ hopamp1.Instance = OPAMP1; hopamp1.Init.PowerMode = OPAMP_POWERMODE_NORMAL; hopamp1.Init.Mode = OPAMP_FOLLOWER_MODE; hopamp1.Init.NonInvertingInput = OPAMP_NONINVERTINGINPUT_DAC; hopamp1.Init.InternalOutput = DISABLE; hopamp1.Init.TimerControlledMuxmode = OPAMP_TIMERCONTROLLEDMUXMODE_DISABLE; hopamp1.Init.UserTrimming = OPAMP_TRIMMING_FACTORY; if (HAL_OPAMP_Init(&hopamp1) != HAL_OK) { Error_Handler(); }}
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