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求助各位兄弟帮忙看看，最近在使用安富莱的AD7606采集电压时出了问题，采集一个直流电压数据是没有问题的，采集交流电压的话数据输出都是正数，如果采集一个0轴以上的交流信号数据也是不正确，会乱跳动，这是我的代码，求助各位帮忙看看出了什么问题。我的pwm频率是50k,采集的信号是1k的。
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2025 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "spi.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdio.h>
#include "string.h"
#include "AD9833.h"
#include "AD9833_Setup.h"
volatile uint16_t SAMPLING_POINTS = 55;
volatile uint8_t nums = 0;
volatile uint8_t ad7606SamplingDoneFlag = 0;
volatile float data[8][55];
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
void AD7606_STM32F407VET6(uint8_t RANGE, uint8_t OS)
{
volatile uint16_t ii = 0;
volatile uint8_t MODE = 0;
volatile uint8_t M[3] = {0x00, 0x00, 0x00};
/*Initialize CS pin*/
// HAL_GPIO_WritePin(GPIOA, AD_CS_PIN_Pin, GPIO_PIN_RESET);
/*Reset AD7606*/
HAL_GPIO_WritePin(GPIOA, AD_RESET_PIN_Pin, GPIO_PIN_RESET);
HAL_Delay(1);
HAL_GPIO_WritePin(GPIOA, AD_RESET_PIN_Pin, GPIO_PIN_SET);
HAL_Delay(1);
HAL_GPIO_WritePin(GPIOA, AD_RESET_PIN_Pin, GPIO_PIN_RESET);
// /*PWM*/
// HAL_TIM_PWM_Start(&htim2,TIM_CHANNEL_2); //CA通道转换
/*Define OS pin*/
MODE = OS;
for(ii=0;ii<3;ii++)
{
M[ii] = MODE % 2;
MODE = MODE / 2;
}
if(M[0] == 1)
{
HAL_GPIO_WritePin(GPIOB, AD_OS0_PIN_Pin, GPIO_PIN_SET);
}
else
{
HAL_GPIO_WritePin(GPIOB, AD_OS0_PIN_Pin, GPIO_PIN_RESET);
}
if(M[1] == 1)
{
HAL_GPIO_WritePin(GPIOB, AD_OS1_PIN_Pin, GPIO_PIN_SET);
}
else
{
HAL_GPIO_WritePin(GPIOB, AD_OS1_PIN_Pin, GPIO_PIN_RESET);
}
if(M[2] == 1)
{
HAL_GPIO_WritePin(GPIOB, AD_OS2_PIN_Pin, GPIO_PIN_SET);
}
else
{
HAL_GPIO_WritePin(GPIOB, AD_OS2_PIN_Pin, GPIO_PIN_RESET);
}
if(RANGE == 1)
{
HAL_GPIO_WritePin(GPIOA, AD_RANGE_PIN_Pin, GPIO_PIN_SET);
}
else
{
HAL_GPIO_WritePin(GPIOA, AD_RANGE_PIN_Pin, GPIO_PIN_RESET);
}
/*PWM*/
HAL_TIM_PWM_Start(&htim2,TIM_CHANNEL_2); //CA通道转换
}
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
char buffer[8];
volatile int32_t i=0;
/* 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_SPI1_Init();
MX_TIM2_Init();
MX_USART3_UART_Init();
/* USER CODE BEGIN 2 */
AD9833_Typedef AD9833_1;
AD9833_Init(&AD9833_1);
float Frequency,Phase;
Frequency=1000;
Phase=0;
AD9833_SetWave(SIN, *(&AD9833_1));
AD9833_SetWaveData(Frequency,Phase,*(&AD9833_1));
char msg[30];
sprintf(msg, "ad7606\n");
HAL_UART_Transmit(&huart3, (uint8_t*)msg, strlen(msg), 10);
HAL_NVIC_DisableIRQ(EXTI4_IRQn);
AD7606_STM32F407VET6(0, 0);
HAL_NVIC_EnableIRQ(EXTI4_IRQn);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
if(ad7606SamplingDoneFlag == 1)
{
// __HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_2, 105);
HAL_TIM_PWM_Stop(&htim2, TIM_CHANNEL_2); //停止转换
// 计算均值和RMS
float mean = 0.0f, sum_squares = 0.0f;
for(int n = 5; n < SAMPLING_POINTS; n++) {
mean += data[0][n];
sum_squares += data[0][n] * data[0][n];
}
mean /= (SAMPLING_POINTS-5);
float rms = sqrtf(sum_squares / (SAMPLING_POINTS-5));
for (uint16_t n = 5; n < SAMPLING_POINTS; n++) // 注意: n < 100, 不是<=100
{
sprintf(buffer, "%1.4f\r\n", data[0][n]); // 发送通道1数据
HAL_UART_Transmit(&huart3, (uint8_t*)buffer, strlen(buffer), 10);
}
sprintf(buffer, "Mean:%+1.4fV, RMS:%+1.4fV\r\n", mean, rms);
HAL_UART_Transmit(&huart3, (uint8_t*)buffer, strlen(buffer), 10);
nums = 0;
ad7606SamplingDoneFlag = 0;
AD7606_STM32F407VET6(0, 0);
HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_2);
__HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_2, 103);
}
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Configure the main internal regulator output voltage
*/
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLM = 8;
RCC_OscInitStruct.PLL.PLLN = 168;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 4;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
{
Error_Handler();
}
}
/* USER CODE BEGIN 4 */
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
volatile uint8_t i = 0;
volatile uint8_t first_bit = 0;
uint8_t byte[2];
volatile uint16_t receive;
volatile uint8_t chari = 0;
char buffer[8];
if(GPIO_Pin == AD_BUSY_PIN_Pin)
{
if(ad7606SamplingDoneFlag == 0 && nums < SAMPLING_POINTS)
{
for(i = 0; i < 8; i++)
{
HAL_GPIO_WritePin(GPIOA, AD_CS_PIN_Pin, GPIO_PIN_RESET); //使能数据帧传输
__NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP();
HAL_SPI_Receive(&hspi1, byte, 2, 100); //提取V1通道数据
__NOP(); __NOP(); __NOP(); __NOP(); __NOP(); __NOP();
uint16_t receive = (byte[0] << 8) | byte[1]; //将两个8位数据整合成一个16位数据
// first_bit = (byte[0] >> 7) & 1; //提取接收数据的符号位，1-，0+
int16_t raw_value = (int16_t)receive; // 正确处理二进制补码
data[i][nums] = (raw_value+21) * 5.0f / 32768.0f; // ±5V范围
// data[i][nums] = raw_value;
HAL_GPIO_WritePin(GPIOA, AD_CS_PIN_Pin, GPIO_PIN_SET);
}
nums++;
if(nums >= SAMPLING_POINTS)
{
ad7606SamplingDoneFlag = 1; //nums=100时，停止读数据
}
}
}
}
//void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) {
// if (GPIO_Pin == AD_BUSY_PIN_Pin) {
// HAL_UART_Transmit(&huart3, (uint8_t*)"BUSY IRQ!\n", 10, 100);
// }
//}
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
__disable_irq();
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
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发表于 2025-7-12 17:29:11
发表于 2025-7-14 09:04:48
楼主
