帮我写一个用标准库函数stm32c8t6,通过温湿度传感器控制水泵,当超过设定温度时,水泵启动的代码
时间: 2024-02-25 15:51:29 浏览: 22
好的,以下是一个使用标准库函数的示例代码:
```c
#include "stm32f1xx.h"
#define TEMP_THRESHOLD 25 // 设定温度阈值为25度
ADC_HandleTypeDef hadc1;
TIM_HandleTypeDef htim2;
void SystemClock_Config(void);
int main(void)
{
HAL_Init();
SystemClock_Config();
// 初始化 ADC 和 TIM
__HAL_RCC_ADC1_CLK_ENABLE();
hadc1.Instance = ADC1;
hadc1.Init.ContinuousConvMode = ENABLE;
hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
hadc1.Init.NbrOfChannel = 1;
HAL_ADC_Init(&hadc1);
ADC_ChannelConfTypeDef sConfig = {0};
sConfig.Channel = ADC_CHANNEL_0; // 使用 ADC1 的通道0
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;
HAL_ADC_ConfigChannel(&hadc1, &sConfig);
__HAL_RCC_TIM2_CLK_ENABLE();
htim2.Instance = TIM2;
htim2.Init.Prescaler = 7200 - 1; // 计数器频率为10kHz
htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
htim2.Init.Period = 1000 - 1; // 计数器计满1s
htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
HAL_TIM_Base_Init(&htim2);
// 启动 TIM
HAL_TIM_Base_Start_IT(&htim2);
// 初始化 GPIO
__HAL_RCC_GPIOA_CLK_ENABLE();
GPIO_InitTypeDef GPIO_InitStruct = {0};
GPIO_InitStruct.Pin = GPIO_PIN_1;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
while (1)
{
// 读取温度
HAL_ADC_Start(&hadc1);
HAL_ADC_PollForConversion(&hadc1, 100);
uint16_t adcValue = HAL_ADC_GetValue(&hadc1);
float temp = (float)adcValue / 4096.0f * 3.3f * 100.0f;
HAL_ADC_Stop(&hadc1);
// 判断温度是否超过阈值
if (temp > TEMP_THRESHOLD)
{
// 启动水泵
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_1, GPIO_PIN_SET);
}
else
{
// 关闭水泵
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_1, GPIO_PIN_RESET);
}
HAL_Delay(1000); // 延时1s
}
}
void SysTick_Handler(void)
{
HAL_IncTick();
}
void TIM2_IRQHandler(void)
{
HAL_TIM_IRQHandler(&htim2);
}
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
if (htim->Instance == TIM2)
{
HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_13); // 每1s翻转一次 LED
}
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
RCC_OscInitStruct.HSIState = RCC_HSI_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();
}
/** 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_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
```
以上代码与前面使用了标准库函数来初始化 ADC、TIM 和 GPIO,并使用 HAL_ADC_Start、HAL_ADC_PollForConversion 和 HAL_ADC_GetValue 来读取温度传感器的电压值,用 HAL_GPIO_WritePin 来控制水泵的开关状态。其他部分的代码与前面相同。