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【NUCLEO-H533RE评测】+利用定时器实现计时

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晒太阳的懒猫 发布时间:2024-7-14 21:26

因为打算用STM32H533做一个分析I2C、SPI时序的小设备,这几天就尝试使用定时器去实现精确计时。在使用CubeMX进行设计的时候,

图片1.png

HCLK是可以设到250MHz,但为了方便后面计算,我在这里设置为100MHz。这样,按照计算,设置Timers的溢出值为10000时,Timer的溢出时间就是1ms。实测结果:

图片2.png

可以看到,多多少少还是有出入的。不知道是不是因为开发板主频太高、亦或是我的示波器能力达不到,总之不是那么理想。后面用这样的计数去计算脉冲宽度,可能会有偏差。

另外在使用CubeIDE的时候,千万不要想着用CubeMX去调整时钟、增减GPIO或者其它外设,生成代码,因为会把你已经做好的工程破坏的面目全非。比如有个stm32h5xx_util_i3c.h文件,没戏用CubeMX生成代码后,都会导致这个文件丢失。我是在原来程序的基础上,利用CubeMX去建立其他工程后,拷贝代码过来,来调整程序的。

目前的主程序代码如下:

/* USER CODE BEGIN Header */

/**

---

* @file : main.c
* @brief : Main program body

---

* @attention
*
* Copyright (c) 2024 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** "gui.h"

**#include** "oled.h"

**#define** I3C_IDX_FRAME_1 0U /* Index of Frame 1 */

**#define** I3C_IDX_FRAME_2 1U /* Index of Frame 2 */

I3C_HandleTypeDef hi3c1;

I3C_HandleTypeDef hi3c2;

TIM_HandleTypeDef htim2;

// 与帧上下文相关的上下文缓冲区包含通信的不同缓冲值

I3C_XferTypeDef aContextBuffers[2];

// DAA过程中检测到的目标数量

__IO uint32_t uwTargetCount = 0;

// I3C发送用的缓冲区

uint8_t aTxBuffer[0x0F];

// I3C接收用的缓冲区

uint8_t aRxBuffer[RXBUFFERSIZE];

// HAL用来计算通信的控制数据的缓冲区

uint32_t aControlBuffer[0xF];

/********************/

/* Target Descriptor */

/********************/

TargetDesc_TypeDef TargetDesc1 = {

"TARGET_ID1",

DEVICE_ID1,

0x0000000000000000,

0x00,

TARGET1_DYN_ADDR,

};

/********************/

/* Target Descriptor */

/********************/

TargetDesc_TypeDef TargetDesc2 = {

"TARGET_ID2",

DEVICE_ID2,

0x0000000000000000,

0x00,

TARGET2_DYN_ADDR,

};

// 目标描述符数组

TargetDesc_TypeDef *aTargetDesc[2] = {

&TargetDesc1, /* DEVICE_ID1 */

&TargetDesc2 /* DEVICE_ID2 */

};

/* Variable to catch HotJoin event */

__IO uint32_t uwHotJoinRequested = 0;

/* Buffer that contain payload data, mean PID, BCR, DCR */

uint8_t aPayloadBuffer[64*COUNTOF(aTargetDesc)];

// 设置CCC关联数据的数组

uint8_t aDISEC_data[1] = {0x08};

/* Variable to display reading data */

uint32_t uwDisplayDelay = 0U;

int16_t Temperature = 0;

int16_t aGyroscope[3] = {0};

int16_t aAccelerometer[3] = {0};

// 广播用CCC的描述符

I3C_CCCTypeDef aBroadcast_CCC[] = {

// 目标地址 CCC Value CCC data + defbyte pointer CCC size + defbyte Direction */

{0, Broadcast_DISEC, {aDISEC_data, 1}, LL_I3C_DIRECTION_WRITE},

{0, Broadcast_RSTDAA, {NULL, 0}, LL_I3C_DIRECTION_WRITE},

};

UART_HandleTypeDef huart1;

**void** **SystemClock_Config** (**void** );

**static** **void** **MX_GPIO_Init** (**void** );

**static** **void** **MX_I3C1_Init** (**void** );

**static** **void** **MX_I3C2_Init** (**void** );

**static** **void** **MX_USART1_UART_Init** (**void** );

**static** **void** **MX_TIM2_Init** (**void** );

**static** **void** **EXTI13_IRQHandler_Config** (**void** );

**void** **checkI3CDevice** (**void** );

/**

* @brief The application entry point.
* @retval int

*/

uint8_t flag=0;

**int** **main** (**void** ) {

// 复位所有外设,初始化Flash接口和Systick。

HAL_Init();

// 设置系统时钟

SystemClock_Config();

// 初始化相关外设

MX_GPIO_Init();

MX_I3C1_Init();

MX_I3C2_Init();

MX_USART1_UART_Init();

MX_TIM2_Init();

EXTI13_IRQHandler_Config();

// 初始化OLED并显示信息

OLED_Init();

OLED_Clear(0);

GUI_ShowString(0, 0, (uint8_t*)"Test STM32H533 I3C", 8, 1);

HAL_Delay(100);

**if** (HAL_I3C_ActivateNotification(&hi3c1, NULL, HAL_I3C_IT_HJIE) != *HAL_OK* ) {

/* Error_Handler() function is called when error occurs. */

Error_Handler();

}

**while** (1) {

//checkI3CDevice();

}

}

// 检查是否存在I3C设备(由子设备发出请求,主设备响应后,分发地址)

**void** **checkI3CDevice** (**void** ) {

// 等待目标连接上

**while** (uwHotJoinRequested == 0U) {

// 为热连接启动监听

**if** (flag == 0) {

// I3C2发出连接请求

**if** (HAL_I3C_Tgt_HotJoinReq_IT(&hi3c2) != *HAL_OK* ) {

Error_Handler();

} **else** {

flag = 1;

}

}

}

// 分配动态地址

**if** (HAL_I3C_Ctrl_DynAddrAssign_IT(&hi3c1, I3C_ONLY_ENTDAA) != *HAL_OK* ) {

Error_Handler();

}

// 获取状态

**while** (HAL_I3C_GetState(&hi3c1) != *HAL_I3C_STATE_LISTEN* ) {

}

// 复位,等待捕捉其它I3C设备

uwHotJoinRequested = 0;

}

/**

* @brief System Clock Configuration
* @retval None

*/

// 240MHz

//void SystemClock_Config(void) {

// RCC_OscInitTypeDef RCC_OscInitStruct = {0};

// RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

//

// /** Configure the main internal regulator output voltage

// */

// __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3);

//

// while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}

//

// /** 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.HSIDiv = RCC_HSI_DIV2;

// RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;

// RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;

// 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_CLOCKTYPE_PCLK3;

// RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;

// RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

// RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

// RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

// RCC_ClkInitStruct.APB3CLKDivider = RCC_HCLK_DIV1;

//

// if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK) {

// Error_Handler();

// }

//}

//100MHz

**void** **SystemClock_Config** (**void** )

{

RCC_OscInitTypeDef RCC_OscInitStruct = {0};

RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

/** Configure the main internal regulator output voltage

*/

__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3);

**while** (!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}

/** Initializes the RCC Oscillators according to the specified parameters

* in the RCC_OscInitTypeDef structure.

*/

RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_CSI;

RCC_OscInitStruct.CSIState = RCC_CSI_ON;

RCC_OscInitStruct.CSICalibrationValue = RCC_CSICALIBRATION_DEFAULT;

RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

RCC_OscInitStruct.PLL.PLLSource = RCC_PLL1_SOURCE_CSI;

RCC_OscInitStruct.PLL.PLLM = 1;

RCC_OscInitStruct.PLL.PLLN = 50;

RCC_OscInitStruct.PLL.PLLP = 2;

RCC_OscInitStruct.PLL.PLLQ = 2;

RCC_OscInitStruct.PLL.PLLR = 2;

RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1_VCIRANGE_2;

RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1_VCORANGE_WIDE;

RCC_OscInitStruct.PLL.PLLFRACN = 0;

**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_CLOCKTYPE_PCLK3;

RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

RCC_ClkInitStruct.APB3CLKDivider = RCC_HCLK_DIV1;

**if** (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != *HAL_OK* )

{

Error_Handler();

}

}

/**

* @brief I3C1 Initialization Function
* @param None
* @retval None

*/

**static** **void** **MX_I3C1_Init** (**void** ) {

I3C_FifoConfTypeDef sFifoConfig = {0};

I3C_CtrlConfTypeDef sCtrlConfig = {0};

hi3c1.Instance = I3C1;

hi3c1.Mode = *HAL_I3C_MODE_CONTROLLER* ;

hi3c1.Init.CtrlBusCharacteristic.SDAHoldTime = HAL_I3C_SDA_HOLD_TIME_1_5;

hi3c1.Init.CtrlBusCharacteristic.WaitTime = HAL_I3C_OWN_ACTIVITY_STATE_0;

hi3c1.Init.CtrlBusCharacteristic.SCLPPLowDuration = 0x09;

hi3c1.Init.CtrlBusCharacteristic.SCLI3CHighDuration = 0x09;

hi3c1.Init.CtrlBusCharacteristic.SCLODLowDuration = 0x59;

hi3c1.Init.CtrlBusCharacteristic.SCLI2CHighDuration = 0x00;

hi3c1.Init.CtrlBusCharacteristic.BusFreeDuration = 0x32;

hi3c1.Init.CtrlBusCharacteristic.BusIdleDuration = 0xf8;

**if** (HAL_I3C_Init(&hi3c1) != *HAL_OK* )

{

Error_Handler();

}

/** Configure FIFO

*/

sFifoConfig.RxFifoThreshold = HAL_I3C_RXFIFO_THRESHOLD_1_4;

sFifoConfig.TxFifoThreshold = HAL_I3C_TXFIFO_THRESHOLD_1_4;

sFifoConfig.ControlFifo = HAL_I3C_CONTROLFIFO_DISABLE;

sFifoConfig.StatusFifo = HAL_I3C_STATUSFIFO_DISABLE;

**if** (HAL_I3C_SetConfigFifo(&hi3c1, &sFifoConfig) != *HAL_OK* )

{

Error_Handler();

}

/** Configure controller

*/

sCtrlConfig.DynamicAddr = 0;

sCtrlConfig.StallTime = 0x00;

sCtrlConfig.HotJoinAllowed = *ENABLE* ;

sCtrlConfig.ACKStallState = *DISABLE* ;

sCtrlConfig.CCCStallState = *DISABLE* ;

sCtrlConfig.TxStallState = *DISABLE* ;

sCtrlConfig.RxStallState = *DISABLE* ;

sCtrlConfig.HighKeeperSDA = *DISABLE* ;

**if** (HAL_I3C_Ctrl_Config(&hi3c1, &sCtrlConfig) != *HAL_OK* )

{

Error_Handler();

}

}

/**

* @brief I3C2 Initialization Function
* @param None
* @retval None

*/

**static** **void** **MX_I3C2_Init** (**void** ) {

I3C_FifoConfTypeDef sFifoConfig = {0};

I3C_TgtConfTypeDef sTgtConfig = {0};

hi3c2.Instance = I3C2;

hi3c2.Mode = *HAL_I3C_MODE_TARGET* ;

hi3c2.Init.TgtBusCharacteristic.BusAvailableDuration = 0xf8;

**if** (HAL_I3C_Init(&hi3c2) != *HAL_OK* ) {

Error_Handler();

}

/** Configure FIFO

*/

sFifoConfig.RxFifoThreshold = HAL_I3C_RXFIFO_THRESHOLD_1_4;

sFifoConfig.TxFifoThreshold = HAL_I3C_TXFIFO_THRESHOLD_1_4;

sFifoConfig.ControlFifo = HAL_I3C_CONTROLFIFO_DISABLE;

sFifoConfig.StatusFifo = HAL_I3C_STATUSFIFO_DISABLE;

**if** (HAL_I3C_SetConfigFifo(&hi3c2, &sFifoConfig) != *HAL_OK* ) {

Error_Handler();

}

/** Configure Target

*/

sTgtConfig.Identifier = 0xC7;

sTgtConfig.MIPIIdentifier = DEVICE_ID2;

sTgtConfig.CtrlRoleRequest = *DISABLE* ;

sTgtConfig.HotJoinRequest = *ENABLE* ;

sTgtConfig.IBIRequest = *DISABLE* ;

sTgtConfig.IBIPayload = *DISABLE* ;

sTgtConfig.IBIPayloadSize = HAL_I3C_PAYLOAD_EMPTY;

sTgtConfig.MaxReadDataSize = 0xFF;

sTgtConfig.MaxWriteDataSize = 0xFF;

sTgtConfig.CtrlCapability = *DISABLE* ;

sTgtConfig.GroupAddrCapability = *DISABLE* ;

sTgtConfig.DataTurnAroundDuration = HAL_I3C_TURNAROUND_TIME_TSCO_LESS_12NS;

sTgtConfig.MaxReadTurnAround = 0;

sTgtConfig.MaxDataSpeed = HAL_I3C_GETMXDS_FORMAT_1;

sTgtConfig.MaxSpeedLimitation = *DISABLE* ;

sTgtConfig.HandOffActivityState = HAL_I3C_HANDOFF_ACTIVITY_STATE_0;

sTgtConfig.HandOffDelay = *DISABLE* ;

sTgtConfig.PendingReadMDB = *DISABLE* ;

**if** (HAL_I3C_Tgt_Config(&hi3c2, &sTgtConfig) != *HAL_OK* )

{

Error_Handler();

}

}

/**

* @brief TIM2 Initialization Function
* @param None
* @retval None

*/

**static** **void** **MX_TIM2_Init** (**void** )

{

TIM_ClockConfigTypeDef sClockSourceConfig = {0};

TIM_MasterConfigTypeDef sMasterConfig = {0};

/* USER CODE BEGIN TIM2_Init 1 */

/* USER CODE END TIM2_Init 1 */

htim2.Instance = TIM2;

htim2.Init.Prescaler = 0;

htim2.Init.CounterMode = TIM_COUNTERMODE_UP;

htim2.Init.Period = 100000; // 100MHz:1mS

htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;

htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;

**if** (HAL_TIM_Base_Init(&htim2) != *HAL_OK* ) {

Error_Handler();

}

sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;

**if** (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != *HAL_OK* ) {

Error_Handler();

}

sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;

sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_ENABLE;

**if** (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != *HAL_OK* ) {

Error_Handler();

}

// 允许Timer2中断

HAL_TIM_Base_Start_IT(&htim2);

HAL_NVIC_EnableIRQ(*TIM2_IRQn* );

}

/**

* @brief USART1 Initialization Function
* @param None
* @retval None

*/

**static** **void** **MX_USART1_UART_Init** (**void** ) {

huart1.Instance = USART1;

huart1.Init.BaudRate = 115200;

huart1.Init.WordLength = UART_WORDLENGTH_8B;

huart1.Init.StopBits = UART_STOPBITS_1;

huart1.Init.Parity = UART_PARITY_NONE;

huart1.Init.Mode = UART_MODE_TX_RX;

huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;

huart1.Init.OverSampling = UART_OVERSAMPLING_16;

huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;

huart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;

huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;

**if** (HAL_UART_Init(&huart1) != *HAL_OK* ) {

Error_Handler();

}

**if** (HAL_UARTEx_SetTxFifoThreshold(&huart1, UART_TXFIFO_THRESHOLD_1_8) != *HAL_OK* ) {

Error_Handler();

}

**if** (HAL_UARTEx_SetRxFifoThreshold(&huart1, UART_RXFIFO_THRESHOLD_1_8) != *HAL_OK* ) {

Error_Handler();

}

**if** (HAL_UARTEx_DisableFifoMode(&huart1) != *HAL_OK* ) {

Error_Handler();

}

}

/**

* @brief GPIO Initialization Function
* @param None
* @retval None

*/

**static** **void** **MX_GPIO_Init** (**void** ) {

GPIO_InitTypeDef GPIO_InitStruct = {0};

/* GPIO Ports Clock Enable */

__HAL_RCC_GPIOC_CLK_ENABLE();

__HAL_RCC_GPIOA_CLK_ENABLE();

__HAL_RCC_GPIOB_CLK_ENABLE();

/*Configure GPIO pin Output Level */

HAL_GPIO_WritePin(USER_LED_GPIO_Port, USER_LED_Pin, *GPIO_PIN_RESET* );

/*Configure GPIO pin Output Level */

HAL_GPIO_WritePin(GPIOA, OLED_SCL_Pin|OLED_SDA_Pin, *GPIO_PIN_SET* );

// 设置用户按钮使用的GPIO口

GPIO_InitStruct.Pin = USER_BUTTON_Pin;

GPIO_InitStruct.Mode = GPIO_MODE_INPUT;

GPIO_InitStruct.Pull = GPIO_NOPULL;

HAL_GPIO_Init(USER_BUTTON_GPIO_Port, &GPIO_InitStruct);

// 设置用户LED按钮使用的GPIO口

GPIO_InitStruct.Pin = USER_LED_Pin;

GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;

GPIO_InitStruct.Pull = GPIO_NOPULL;

GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;

HAL_GPIO_Init(USER_LED_GPIO_Port, &GPIO_InitStruct);

// 设置OLED使用的接口(模拟方式)

GPIO_InitStruct.Pin = OLED_SCL_Pin|OLED_SDA_Pin;

GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;

GPIO_InitStruct.Pull = GPIO_PULLUP;

GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;

HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

}

/**

* @brief 从机请求地址分配的回调函数
* @par Called functions
* - HAL_I3C_TgtReqDynamicAddrCallback()
* - HAL_I3C_Ctrl_SetDynamicAddress()
* @retval None

*/

**void** **HAL_I3C_TgtReqDynamicAddrCallback** (I3C_HandleTypeDef *hi3c, uint64_t targetPayload) {

**printf** ("从机请求地址分配。");

GUI_ShowString(0, 16, (uint8_t*)"ReqAddr", 8, 1);

/* Update Payload on aTargetDesc */

aTargetDesc[uwTargetCount]->TARGET_BCR_DCR_PID = targetPayload;

/* Send associated dynamic address */

HAL_I3C_Ctrl_SetDynAddr(hi3c, aTargetDesc[uwTargetCount++]->DYNAMIC_ADDR);

}

/**

* @brief 控制器完成动态地址的分配的回调函数
* @param hi3c : [IN] 包含配置信息的结构体.
* @retval None

*/

**void** **HAL_I3C_CtrlDAACpltCallback** (I3C_HandleTypeDef *hi3c) {

**printf** ("完成动态地址的分配。");

GUI_ShowString(60, 16, (uint8_t*)"Addr OK", 8, 1);

}

/**

* @brief 收到连接请求后代额回调函数.
* @par Called functions
* - HAL_I3C_NotifyCallback()
* @retval None

*/

**void** **HAL_I3C_NotifyCallback** (I3C_HandleTypeDef *hi3c, uint32_t eventId) {

**if** ((eventId & EVENT_ID_HJ) == EVENT_ID_HJ) {

HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_5);

// 建立收到连接请求的标志

**printf** ("收到连接请求!");

GUI_ShowString(0, 8, (uint8_t*)"Notify", 8, 1);

uwHotJoinRequested = 1;

}

}

/**

* @brief 从机(I3C2)连接成功的回调函数.
* 函数目的是为了检查热连接过程是否完成
* @par Called functions
* - HAL_I3C_TgtHotJoinCallback()
* @retval None

*/

**void** **HAL_I3C_TgtHotJoinCallback** (I3C_HandleTypeDef *hi3c, uint8_t dynamicAddress) {

// 从机连上

GUI_ShowString(0, 24, (uint8_t*)"Target Addr=", 8, 1);

GUI_ShowNum(100, 24, dynamicAddress, 2, 8, 1);

**printf** ("Slave is OK! Address=%d", dynamicAddress);

}

/**

* @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 */

}

// 定时器2的溢出中断回调函数

**void** **HAL_TIM_PeriodElapsedCallback** (TIM_HandleTypeDef *htim) {

// static unsigned char ledState = 0;

// if (htim == (&htim2)) {

// if (ledState == 0)

// BSP_LED_Off(LED2);

// else

// BSP_LED_On(LED2);

// ledState = !ledState;

// }

BSP_LED_Toggle(LED2);

}

/* USER CODE BEGIN 4 */

/**

* @brief Configures EXTI line 13 (connected to PC.13 pin) in interrupt mode
* @param None
* @retval None

*/

**static** **void** **EXTI13_IRQHandler_Config** (**void** )

{

GPIO_InitTypeDef GPIO_InitStructure;

/* Enable GPIOC clock */

__HAL_RCC_GPIOC_CLK_ENABLE();

/* Configure PC.13 pin as input floating */

GPIO_InitStructure.Mode = GPIO_MODE_IT_RISING_FALLING; //GPIO_MODE_IT_FALLING;

GPIO_InitStructure.Pull = GPIO_NOPULL;

GPIO_InitStructure.Pin = BUTTON_USER_PIN;

HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);

/* Enable and set line 13 Interrupt to the lowest priority */

HAL_NVIC_SetPriority(*EXTI13_IRQn* , 2, 0);

HAL_NVIC_EnableIRQ(*EXTI13_IRQn* );

}

**void** **HAL_GPIO_EXTI_Rising_Callback** (uint16_t GPIO_Pin) {

// 判断是不是来自PC13的

**if** (GPIO_Pin == BUTTON_USER_PIN) {

/* Toggle LED2 */

BSP_LED_On(LED2);

}

}

**void** **HAL_GPIO_EXTI_Falling_Callback** (uint16_t GPIO_Pin) {

// 判断是不是来自PC13的

**if** (GPIO_Pin == BUTTON_USER_PIN) {

/* Toggle LED2 */

BSP_LED_Off(LED2);

}

}

**#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 */

程序里加了开发板上用户按钮的上升沿和下降沿中断。后面制作辅助设备,还需要很多按钮。这次的程序主要就是为了产生计时器,后面继续追加按钮、菜单方面的操作。

收藏 评论1 发布时间:2024-7-14 21:26

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1个回答
y369369 回答时间:2024-8-6 08:54:22

markdown写这种帖子会不会快点

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