stm32F103VCT6对超声波获取的数据进行实时显示
时间: 2024-02-04 13:03:55 浏览: 98
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对于STM32F103VCT6芯片,我们可以使用STM32CubeMX和Keil MDK来实现超声波获取的数据实时显示。以下是一种可能的实现方式:
1. 使用STM32CubeMX生成初始化代码,包括GPIO、TIM和DMA等配置。
2. 在main函数中,初始化TIM和DMA,并启动定时器。
3. 在DMA传输完成中断中,读取DMA缓冲区中的数据,并将其存储在一个数组中。
4. 使用串口通信将数据发送到PC端,并在PC端使用串口调试工具进行实时显示。
以下是一个示例代码,用于实现上述功能:
```
#include "stm32f1xx_hal.h"
#include "stdio.h"
#define BUFFER_SIZE 100
TIM_HandleTypeDef htim2;
DMA_HandleTypeDef hdma_tim2_ch2;
uint16_t buffer[BUFFER_SIZE];
uint16_t data[BUFFER_SIZE];
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_TIM2_Init(void);
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_DMA_Init();
MX_TIM2_Init();
HAL_TIM_Base_Start(&htim2);
HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_2);
HAL_DMA_Start_IT(&hdma_tim2_ch2, (uint32_t)&TIM2->CCR2, (uint32_t)buffer, BUFFER_SIZE);
while (1)
{
// 读取数据
for (int i = 0; i < BUFFER_SIZE; i++)
{
data[i] = buffer[i];
}
// 发送数据到PC端
for (int i = 0; i < BUFFER_SIZE; i++)
{
printf("%d ", data[i]);
}
printf("\n");
HAL_Delay(100);
}
}
void HAL_TIM_PWM_PulseFinishedCallback(TIM_HandleTypeDef *htim)
{
if (htim->Instance == TIM2 && htim->Channel == HAL_TIM_ACTIVE_CHANNEL_2)
{
HAL_DMA_Start_IT(&hdma_tim2_ch2, (uint32_t)&TIM2->CCR2, (uint32_t)buffer, BUFFER_SIZE);
}
}
void DMA1_Channel2_IRQHandler(void)
{
HAL_DMA_IRQHandler(&hdma_tim2_ch2);
}
void HAL_DMA_IRQHandler(DMA_HandleTypeDef *hdma)
{
if (hdma->Instance == DMA1_Channel2)
{
HAL_DMA_IRQHandler(&hdma_tim2_ch2);
}
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
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_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
static void MX_TIM2_Init(void)
{
TIM_OC_InitTypeDef sConfigOC = {0};
htim2.Instance = TIM2;
htim2.Init.Prescaler = 71;
htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
htim2.Init.Period = 999;
htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
if (HAL_TIM_PWM_Init(&htim2) != HAL_OK)
{
Error_Handler();
}
sConfigOC.OCMode = TIM_OCMODE_PWM1;
sConfigOC.Pulse = 499;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
if (HAL_TIM_PWM_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_2) != HAL_OK)
{
Error_Handler();
}
}
static void MX_DMA_Init(void)
{
__HAL_RCC_DMA1_CLK_ENABLE();
hdma_tim2_ch2.Instance = DMA1_Channel2;
hdma_tim2_ch2.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_tim2_ch2.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_tim2_ch2.Init.MemInc = DMA_MINC_ENABLE;
hdma_tim2_ch2.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
hdma_tim2_ch2.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
hdma_tim2_ch2.Init.Mode = DMA_CIRCULAR;
hdma_tim2_ch2.Init.Priority = DMA_PRIORITY_HIGH;
if (HAL_DMA_Init(&hdma_tim2_ch2) != HAL_OK)
{
Error_Handler();
}
__HAL_LINKDMA(&htim2, hdma[TIM_DMA_ID_CC2], hdma_tim2_ch2);
HAL_NVIC_SetPriority(DMA1_Channel2_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA1_Channel2_IRQn);
}
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
__HAL_RCC_GPIOA_CLK_ENABLE();
GPIO_InitStruct.Pin = GPIO_PIN_1;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
void Error_Handler(void)
{
__disable_irq();
while (1)
{
}
}
```
在这个示例代码中,我们使用了TIM2作为定时器,通过PWM信号驱动超声波传感器,使用DMA传输数据,并通过串口通信将数据发送到PC端。你可以根据自己的需要修改代码,以适应实际情况。
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