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

• 🌿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)=10KHzHAL_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