STM32G4 TIM1触发ADC转换

STM32G4 TIM1触发ADC转换

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• 📍相关篇《HAL STM32G4 +ADC手动触发采集+各种滤波算法实现》
• 🎈《HAL STM32G4 +TIM1 3路PWM互补输出+VOFA波形演示》
• 📍《HAL STM32G4内部运放的使用》

• ✨继欧拉电子无刷电机驱动相关视频学习 -- STM32G4 FOC开发实战---TIM1 ADC COMP DAC级联

STM32G4 FOC开发实战---TIM1 ADC COMP DAC级联

• 🌿相对应的文章：https://mp.weixin.qq.com/s?__biz=MzkwMDIzNjA1MQ==&mid=2247484140&idx=1&sn=38128f6f5f8b7afc35a9dd191a4718a8&chksm=c0465490f731dd864907d18ec837e37801062578ac0971eed810268a2efccece02990606e874&mpshare=1&scene=23&srcid=03247g3pxdbfnU0CUA8vrM2i&sharer_shareinfo=411eecf8ebc86fc522cf982bb036e8b0&sharer_shareinfo_first=411eecf8ebc86fc522cf982bb036e8b0#rd

✨跟着视频学习过程中，还是出现了不少状况，在实际测试过程中，发现测试结果并不如视频效果预期。于是各种检查和找问题。

• 📌与本篇知识相关内容参考：《手把手移植 simpleFOC (五)：电流检测 篇》
• 🧨《手写STM32 FOC记录-----pwm触发adc电流采样》

• 🔖在以上参考内容中，解决了不能进入ADC中断的问题。

⛳注意事项

• 🌿在上面的视频讲解和文章内容中，没有提及在STM32CubeMX软件中对ADC中断的开启。
• 🌿ADC注入转换，需要开启对应的中断。具体参考下面main代码初始化配置。

📙本篇工程功能实现概要

• 🌾STM32G4高级定时器1（TIM1）产生3路互补PWM。：PWM互补输出通过调整PWM信号的占空比来控制电机的转速，通过改变信号的极性来控制电机的转向，从而实现精确的电机控制。
• 🌾利用高级定时器1（TIM1）通道4，触发ADC采样。
• 🌾使能ADC1注入通道：ADC1 ->AIN3、ADC1 -> AIN11
• 🌾使能ADC2注入通道：ADC2 ->AIN1

• 配合内部的OPAMP，ADC准确的采样三相电流。

• 🌾使能DAC3 OUT1输出，映射到芯片内部外设。

• 在三相电流过流时及时封波.

• TIM1通道4触发ADC注入转换测试：
  

🛠代码配置

• 📝main

int main(void)
{
  /* USER CODE BEGIN 1 */
//     float temp[5];
//	uint8_t TempData[12];//16  ADC:12;PWM:16 OPM:24
  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_TIM1_Init();
  MX_USART1_UART_Init();
  MX_ADC1_Init();
  MX_COMP1_Init();
  MX_DAC3_Init();
  MX_ADC2_Init();
  MX_OPAMP1_Init();
  MX_OPAMP2_Init();
  MX_OPAMP3_Init();
  /* USER CODE BEGIN 2 */
    //	TIM1->PSC = 30000;//VOFA上位机观测，开启
    //	TIM1->ARR = 10000;

//    TIM1->CCR1 = 2000;
//    TIM1->CCR2 = 5000;
//    TIM1->CCR3 = 4000;

    HAL_TIM_Base_Start(&htim1);
    //	HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_1);
    //	HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_2);
    //	HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_3);
    //	HAL_TIMEx_PWMN_Start(&htim1,TIM_CHANNEL_1);
    //	HAL_TIMEx_PWMN_Start(&htim1,TIM_CHANNEL_2);
    //	HAL_TIMEx_PWMN_Start(&htim1,TIM_CHANNEL_3);


    HAL_OPAMP_Start(&hopamp1);
    HAL_OPAMP_Start(&hopamp2);
    HAL_OPAMP_Start(&hopamp3);

    //HAL_UART_Receive_IT(&huart3，(uint8_t *)&aRxBuffer,1);
    HAL_ADCEx_Calibration_Start(&hadc1, ADC_SINGLE_ENDED);//ADC自校验
    HAL_ADCEx_Calibration_Start(&hadc2, ADC_SINGLE_ENDED);
		
    TIM1->ARR = 8000 - 1;
    TIM1->CCR4 = 8000 - 2;//PWM_F=160MHz/(8000*2)=10KHz
    HAL_TIM_Base_Start(&htim1);
    HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_4);//用于产生ADC触发事件

		 __HAL_ADC_ENABLE_IT(&hadc1, ADC_IT_JEOC);//需要开启ADC注入中断
		 __HAL_ADC_ENABLE_IT(&hadc2, ADC_IT_JEOC);
    
		HAL_ADCEx_InjectedStart_IT(&hadc1);
		HAL_ADCEx_InjectedStart(&hadc2);
		
    HAL_DAC_Start(&hdac3, DAC_CHANNEL_1);
		HAL_DAC_SetValue(&hdac3, DAC_CHANNEL_1, DAC_ALIGN_12B_R, 3000);
    
		HAL_COMP_Start(&hcomp1);//启动比较器
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
    while(1) {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
        HAL_ADC_Start(&hadc1);
        HAL_ADC_Start(&hadc2);
        Vpoten = HAL_ADC_GetValue(&hadc1);
        adc_vbus = HAL_ADC_GetValue(&hadc2);
        Vbus = adc_vbus * 3.3f / 4096 * 26;
        HAL_Delay(10);

    }
  /* USER CODE END 3 */
}

• 🌿按键中断

void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
    /*Preventunusedargument(s)compilationwarning */
    // UNUSED(GPIO_Pin);
    if(KEY1_Pin == GPIO_Pin) {
        HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_1);
        HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_2);
        HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_3);
        HAL_TIMEx_PWMN_Start(&htim1, TIM_CHANNEL_1);
        HAL_TIMEx_PWMN_Start(&htim1, TIM_CHANNEL_2);
        HAL_TIMEx_PWMN_Start(&htim1, TIM_CHANNEL_3);
        HAL_GPIO_TogglePin(LED_GPIO_Port, LED_Pin);
    }
    // if(KEY2_Pin == GPI0_Pin)//没有配置该按键
    //	{
    // HAL_TIM_PWM_Stop(&htim1, TIM_CHANNEL_1);
    // HAL_TIM_PWM_Stop(&htim1, TIM_CHANNEL_2);
    // HAL_TIM_PWM_Stop(&htim1, TIM_CHANNEL_3);
    // HAL_TIMEx_PWMN_Stop(&htim1, TIM_CHANNEL_1);
    // HAL_TIMEx_PWMN_Stop(&htim1, TIM_CHANNEL_2);
    // HAL_TIMEx_PWMN_Stop(&htim1, TIM_CHANNEL_3);
    //	}
}

• 🌿ADC注入中断回调

void HAL_ADCEx_InjectedConvCpltCallback(ADC_HandleTypeDef *hadc)
{
    static uint8_t cnt;
    /*Preventunused argument(s)compilation warning */
//     UNUSED(hadc);
    if(hadc == &hadc1) {
        if(ADC_offset == 0) {
            cnt++;
            adc1_in1 = hadc1.Instance->JDR1;
            adc1_in2 = hadc2.Instance->JDR1;
            adc1_in3 = hadc1.Instance->JDR2;
            IA_Offset += adc1_in1;
            IB_Offset += adc1_in2;
            IC_Offset += adc1_in3;
        }
        if(cnt >= 10) {
            ADC_offset = 1;
            IA_Offset = IA_Offset / 10;
            IB_Offset = IB_Offset / 10;
            IC_Offset = IC_Offset / 10;
        }
    } else {
        HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_4);
        adc1_in1 = hadc1.Instance->JDR1;
        Ia = (adc1_in1 - IA_Offset) * 0.0193359375f;
        adc1_in2 = hadc2.Instance->JDR1;
        Ib = (adc1_in2 - IB_Offset) * 0.0193359375f;
        adc1_in3 = hadc1.Instance->JDR2;
        Ic = (adc1_in3 - IC_Offset) * 0.0193359375f;
        TIM1->CCR1 = 2000;
        TIM1->CCR2 = 4000;
        TIM1->CCR3 = 6000;
        load_data[0] = Ia;
        load_data[1] = Ib;
        load_data[2] = Ic;
        load_data[3] = 0;
        load_data[4] = 0;
//        memcpy(tempData, (uint8_t *)&load_data, sizeof(load_data));
//        HAL_UART_Transmit_DMA(&huart1, (uint8_t *)tempData, 6 * 4);
    }
}

📚测试工程源码

链接：https://pan.baidu.com/s/1eWC-KZDSMnUfOTAn-wMgmg?pwd=s50q 
提取码：s50q