[问答]

STM32F4 定时器触发三ADC 规则+注入

问答对人有帮助，内容完整，我也想知道答案 0 想要使用高级定时器相互触发，同时用定时器触发三个ADC的多路规则通道和注入通道，可是写好程序后ADC总是未被触发看了几遍也找不到问题，请教一下大家 ADC配置： ADC_CommonInitStructure.ADC_Mode = ADC_TripleMode_RegSimult; //adc三重模式 ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2; ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_1; ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles; ADC_CommonInit(&ADC_CommonInitStructure); // Channel-specific settings ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b; //ADC分辨率双模式 12位精度 ADC_InitStructure.ADC_ScanConvMode = ENABLE; //扫描模式 ADC_InitStructure.ADC_ContinuousConvMode = DISABLE; ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Falling; //选择外部触发方式下降沿触发 ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T8_CC1; //选择TIM8_CC1触发规则组开始转换的外部事件 ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //数据右对齐 ADC_InitStructure.ADC_NbrOfConversion = 4; //指定使用规则通道组完成转换的次数采样通道数 ADC_Init(ADC1, &ADC_InitStructure); ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None; //不使用外部触发（多ADC模式中，外部事件触发必须仅触发主ADC，从ADC设置为软件触发) ADC_InitStructure.ADC_ExternalTrigConv = 0; ADC_Init(ADC2, &ADC_InitStructure); ADC_Init(ADC3, &ADC_InitStructure); // Enable DMA request after last transfer (Multi-ADC mode) 多ADC模式下使能源数据变化时开启DMA传输 ADC_MultiModeDMARequestAfterLastTransferCmd(ENABLE); // Injected channels for current measurement at end of cycle ADC_ExternalTrigInjectedConvConfig(ADC1, ADC_ExternalTrigInjecConv_T1_CC4); ADC_ExternalTrigInjectedConvConfig(ADC2, ADC_ExternalTrigInjecConv_T8_CC2); ADC_ExternalTrigInjectedConvEdgeConfig(ADC1, ADC_ExternalTrigInjecConvEdge_Falling); ADC_ExternalTrigInjectedConvEdgeConfig(ADC2, ADC_ExternalTrigInjecConvEdge_Falling); ADC_InjectedSequencerLengthConfig(ADC1, 2); //设置注入通道长度 1-4 ADC_InjectedSequencerLengthConfig(ADC2, 2); ADC_Channels(); // Interrupt ADC_ITConfig(ADC1, ADC_IT_JEOC, ENABLE); //使能ADC的JEOC中断源注入转换中断屏蔽结束 ADC_AutoInjectedConvCmd(ADC1, ENABLE); ADC_AutoInjectedConvCmd(ADC2, ENABLE); //Enable ADC_DMA ADC_DMACmd(ADC1, ENABLE); ADC_DMACmd(ADC2, ENABLE); ADC_DMACmd(ADC3, ENABLE); // Enable ADC1 ADC_Cmd(ADC1, ENABLE); // Enable ADC2 ADC_Cmd(ADC2, ENABLE); // Enable ADC3 ADC_Cmd(ADC3, ENABLE); 复制代码定时器配置 void TIM1_Config(void) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; TIM_DeInit(TIM1); TIM1->CNT = 0; // TIM1 clock enable RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE); // Time Base configuration TIM_TimeBaseStructure.TIM_Prescaler = 8399; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseStructure.TIM_Period = 9999; TIM_TimeBaseStructure.TIM_ClockDivision = 0; //时钟分割 TIM_TimeBaseStructure.TIM_RepetitionCounter = 0; TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); // Channel 1, 2 and 3 Configuration in PWM mode TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable; TIM_OCInitStructure.TIM_Pulse = TIM1->ARR / 2; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出比较极性高 TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High; //互补输出极性高 TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set; //空闲状态期间输出比较引脚状态 TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Set; TIM_OC4Init(TIM1, &TIM_OCInitStructure); TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Enable); TIM_CCPreloadControl(TIM1, ENABLE); TIM_ARRPreloadConfig(TIM1, ENABLE); // TIM1 Master and TIM8 slave TIM_SelectOutputTrigger(TIM1, TIM_TRGOSource_Update); TIM_SelectMasterSlaveMode(TIM1, TIM_MasterSlaveMode_Enable); TIM_CCxCmd(TIM1, TIM_Channel_4, TIM_CCx_Enable); // Enable TIM1 and TIM8 TIM_Cmd(TIM1, ENABLE); // Main Output Enable TIM_CtrlPWMOutputs(TIM1, ENABLE); //设置TIM1 的PWM输出使能 } void TIM8_Config(void) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; TIM_DeInit(TIM8); TIM8->CNT = 0; // ------------- Timer8 for ADC sampling ------------- // // Time Base configuration RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8, ENABLE); TIM_TimeBaseStructure.TIM_Prescaler = 8399; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseStructure.TIM_Period = 9999; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_RepetitionCounter = 0; TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure); TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = TIM8->ARR / 2; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High; TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set; TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Set; TIM_OC1Init(TIM8, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM8, TIM_OCPreload_Enable); TIM_OC2Init(TIM8, &TIM_OCInitStructure); TIM_OC2PreloadConfig(TIM8, TIM_OCPreload_Enable); TIM_ARRPreloadConfig(TIM8, ENABLE); TIM_CCPreloadControl(TIM8, ENABLE); TIM_CtrlPWMOutputs(TIM8, ENABLE); TIM_SelectInputTrigger(TIM8, TIM_TS_ITR0); //选择输入触发源 ITR0 TIM_SelectSlaveMode(TIM8, TIM_SlaveMode_Reset); //计数器从模式选择所选的触发信号上升沿重新初始化 TIM_ITRxExternalClockConfig(TIM8, TIM_TS_ITR0); //选择ITR0为触发源提供时钟 TIM_CCxCmd(TIM8, TIM_Channel_1, TIM_CCx_Enable); TIM_CCxCmd(TIM8, TIM_Channel_2, TIM_CCx_Enable); TIM_ITConfig(TIM8, TIM_IT_CC1, ENABLE); TIM_ITConfig(TIM8, TIM_IT_CC2, ENABLE); TIM_Cmd(TIM8, ENABLE); } 复制代码 0 已退回10积分
2018-1-15 14:44:52　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × richthoffen 该类别下有 182 个回答。邀请回答 7vyydyfwef 该类别下有 57 个回答。邀请回答我是卖报的小男孩该类别下有 32 个回答，其中被选为最佳答案 1 次。邀请回答 chenbingjy 该类别下有 31 个回答。邀请回答谦谦三君子该类别下有 27 个回答。邀请回答短短该类别下有 25 个回答。邀请回答 YY599566 该类别下有 22 个回答。邀请回答 dingyang598 该类别下有 22 个回答，其中被选为最佳答案 1 次。邀请回答 nvuuweew 该类别下有 22 个回答。邀请回答 60user16 该类别下有 19 个回答。邀请回答 hapyy 该类别下有 19 个回答。邀请回答 h1654155957.9572 该类别下有 19 个回答。邀请回答 HEHELA 该类别下有 18 个回答。邀请回答 DerSohn 该类别下有 18 个回答。邀请回答 huhu12 该类别下有 18 个回答。邀请回答 csz9981 该类别下有 15 个回答。邀请回答天地直方该类别下有 15 个回答。邀请回答 dull20112011 该类别下有 15 个回答。邀请回答陈军该类别下有 15 个回答。邀请回答 sfafa 该类别下有 14 个回答。邀请回答举报别抢我的锅相关推荐 • STM32L431RCT6进如STOP模式后，ADC注入通道定时器会正常触发但不会触发注入通道 204 • 如何实现定时器TIM3输出PWM波触发ADC采样呢 1776 • STM32F4的通用定时器有何特点及应用呢 1058 • STM32L431RCT6触发ADC模拟看门狗规则通道转换后，由定时器触发的注入通道中断会失效怎么处理？ 234 • STM32F4定时器中断的作用是什么？ 1312 • stm32f4定时器基本应用是什么？ 702 • STM32F4定时器的计数器模式有哪几种呢 2758 • stm32F4 ADC基本介绍 3162 • 如何对STM32F4的通用定时器进行配置呢 1314 • STM32F4的基本定时器是由哪些部分组成的 818 1个回答