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删除RTC，改用TIM进行非中断定时时间戳

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不吃油炸鸡
2026-02-02 10:37:50 +08:00
parent 68d900e3ea
commit 508718358a
22 changed files with 25405 additions and 35195 deletions
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116
Power_Pico/Core/Src/tim.c
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@@ -22,11 +22,17 @@
/* USER CODE BEGIN 0 */
// 64位总微秒计数器
static volatile uint64_t g_total_microseconds = 0;
// 上一次读取的TIM5计数值
static volatile uint32_t g_last_tim_value = 0;
/* USER CODE END 0 */
TIM_HandleTypeDef htim1;
TIM_HandleTypeDef htim2;
TIM_HandleTypeDef htim4;
TIM_HandleTypeDef htim5;
/* TIM1 init function */
void MX_TIM1_Init(void)
@@ -172,6 +178,49 @@ void MX_TIM4_Init(void)
/* USER CODE END TIM4_Init 2 */
HAL_TIM_MspPostInit(&htim4);
}
/* TIM5 init function */
void MX_TIM5_Init(void)
{
/* USER CODE BEGIN TIM5_Init 0 */
/* USER CODE END TIM5_Init 0 */
TIM_MasterConfigTypeDef sMasterConfig = {0};
TIM_OC_InitTypeDef sConfigOC = {0};
/* USER CODE BEGIN TIM5_Init 1 */
/* USER CODE END TIM5_Init 1 */
htim5.Instance = TIM5;
htim5.Init.Prescaler = 95;
htim5.Init.CounterMode = TIM_COUNTERMODE_UP;
htim5.Init.Period = 4294967295;
htim5.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim5.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_PWM_Init(&htim5) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim5, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
sConfigOC.OCMode = TIM_OCMODE_PWM1;
sConfigOC.Pulse = 0;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
if (HAL_TIM_PWM_ConfigChannel(&htim5, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM5_Init 2 */
/* USER CODE END TIM5_Init 2 */
}
void HAL_TIM_PWM_MspInit(TIM_HandleTypeDef* tim_pwmHandle)
@@ -203,6 +252,17 @@ void HAL_TIM_PWM_MspInit(TIM_HandleTypeDef* tim_pwmHandle)
/* USER CODE END TIM4_MspInit 1 */
}
else if(tim_pwmHandle->Instance==TIM5)
{
/* USER CODE BEGIN TIM5_MspInit 0 */
/* USER CODE END TIM5_MspInit 0 */
/* TIM5 clock enable */
__HAL_RCC_TIM5_CLK_ENABLE();
/* USER CODE BEGIN TIM5_MspInit 1 */
/* USER CODE END TIM5_MspInit 1 */
}
}
void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* tim_baseHandle)
@@ -296,6 +356,17 @@ void HAL_TIM_PWM_MspDeInit(TIM_HandleTypeDef* tim_pwmHandle)
/* USER CODE END TIM4_MspDeInit 1 */
}
else if(tim_pwmHandle->Instance==TIM5)
{
/* USER CODE BEGIN TIM5_MspDeInit 0 */
/* USER CODE END TIM5_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_TIM5_CLK_DISABLE();
/* USER CODE BEGIN TIM5_MspDeInit 1 */
/* USER CODE END TIM5_MspDeInit 1 */
}
}
void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* tim_baseHandle)
@@ -316,4 +387,49 @@ void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* tim_baseHandle)
/* USER CODE BEGIN 1 */
/**
* @brief 更新并获取64位的总微秒数 (核心函数)
* @note 此函数应该被周期性调用（例如在UI的500ms定时器中）
* 来处理32位计数器的溢出并累加到64位变量中。
*/
void UpdateMicrosecondCounter(void)
{
uint32_t current_tim_value = __HAL_TIM_GET_COUNTER(&htim5);
uint32_t diff;
if (current_tim_value >= g_last_tim_value) {
// 没有溢出
diff = current_tim_value - g_last_tim_value;
} else {
// 32位计数器已经溢出
// diff = (最大值 - 上一次的值) + 当前值 + 1
diff = (0xFFFFFFFF - g_last_tim_value) + current_tim_value + 1;
}
g_total_microseconds += diff;
g_last_tim_value = current_tim_value;
}
/**
* @brief 获取累计的64位微秒数
* @retval 64位的总微秒数
*/
uint64_t GetMicrosecondCounter(void)
{
// 在读取前先更新一次，以获取最精确的值
UpdateMicrosecondCounter();
return g_total_microseconds;
}
/**
* @brief 清除累计的微秒计数器
*/
void ClearMicrosecondCounter(void)
{
g_total_microseconds = 0;
// 同时重置TIM5的硬件计数器和软件记录值
__HAL_TIM_SET_COUNTER(&htim5, 0);
g_last_tim_value = 0;
}
/* USER CODE END 1 */