写一个基于STM32的红外遥控学习代码
时间: 2024-06-08 16:05:52 浏览: 12
以下是一个基于STM32的红外遥控学习代码的示例。这个示例使用了STM32CubeMX和HAL库。
```c
#include "main.h"
#include "stm32f1xx_hal.h"
#define IR_PIN GPIO_PIN_0
#define IR_PORT GPIOA
#define LED_PIN GPIO_PIN_1
#define LED_PORT GPIOA
#define COMMAND_SIZE 32
TIM_HandleTypeDef htim1;
GPIO_InitTypeDef GPIO_InitStruct;
uint32_t irData[COMMAND_SIZE];
uint8_t irDataIndex = 0;
uint8_t irLearningMode = 0;
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_TIM1_Init(void);
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_TIM1_Init();
while (1)
{
if (irDataIndex == COMMAND_SIZE)
{
HAL_TIM_Base_Stop_IT(&htim1);
HAL_GPIO_WritePin(LED_PORT, LED_PIN, GPIO_PIN_RESET);
}
}
}
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
if (htim->Instance == TIM1)
{
irData[irDataIndex++] = HAL_TIM_ReadCapturedValue(&htim1, TIM_CHANNEL_1);
HAL_TIM_IC_Start_IT(&htim1, TIM_CHANNEL_1);
}
}
void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim)
{
if (htim->Instance == TIM1 && htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1)
{
if (irDataIndex < COMMAND_SIZE)
{
irData[irDataIndex++] = HAL_TIM_ReadCapturedValue(&htim1, TIM_CHANNEL_1);
}
else
{
HAL_TIM_IC_Stop_IT(&htim1, TIM_CHANNEL_1);
HAL_TIM_Base_Start_IT(&htim1);
irDataIndex = 0;
HAL_GPIO_WritePin(LED_PORT, LED_PIN, GPIO_PIN_SET);
}
}
}
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
if (GPIO_Pin == IR_PIN)
{
if (irLearningMode)
{
HAL_TIM_IC_Start_IT(&htim1, TIM_CHANNEL_1);
}
}
}
static void MX_TIM1_Init(void)
{
TIM_ClockConfigTypeDef sClockSourceConfig = { 0 };
TIM_MasterConfigTypeDef sMasterConfig = { 0 };
TIM_IC_InitTypeDef sConfigIC = { 0 };
htim1.Instance = TIM1;
htim1.Init.Prescaler = 72 - 1;
htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
htim1.Init.Period = 0xFFFF;
htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
HAL_TIM_Base_Init(&htim1);
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig);
HAL_TIM_IC_Init(&htim1);
sConfigIC.ICPolarity = TIM_ICPOLARITY_FALLING;
sConfigIC.ICSelection = TIM_ICSELECTION_DIRECTTI;
sConfigIC.ICPrescaler = TIM_ICPSC_DIV1;
sConfigIC.ICFilter = 0;
HAL_TIM_IC_ConfigChannel(&htim1, &sConfigIC, TIM_CHANNEL_1);
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig);
HAL_TIM_Base_Start_IT(&htim1);
}
static void MX_GPIO_Init(void)
{
__HAL_RCC_GPIOA_CLK_ENABLE();
GPIO_InitStruct.Pin = IR_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(IR_PORT, &GPIO_InitStruct);
GPIO_InitStruct.Pin = LED_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(LED_PORT, &GPIO_InitStruct);
HAL_NVIC_SetPriority(EXTI0_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(EXTI0_IRQn);
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = { 0 };
RCC_ClkInitTypeDef RCC_ClkInitStruct = { 0 };
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();
}
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();
}
}
```
在这个示例中,我们使用了STM32的TIM1模块来捕获红外信号。每当红外信号下降沿被检测到时,我们将定时器的当前值保存到一个数组中。一旦我们捕获了足够的信号,就会停止捕获并将数据存储到数组中。
要开始捕获红外信号,请将红外接收器连接到PA0引脚,并将LED连接到PA1引脚。在这个示例中,我们使用PA0的下降沿来触发红外信号捕获。当我们进入学习模式时,我们将捕获的红外信号存储在一个数组中,并在数组填满时停止捕获。
这只是一个简单的示例,可以根据您的需求进行更改和扩展。
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