87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
/******************************************************************************
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* @file jb_timer.c
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* @brief TIM6 1ms 基础定时器硬件驱动实现
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* @author cyWu <1917507415@qq.com>
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* @date 2026.08.10
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* @version V1.0.1
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* @history
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* - V1.0.1, 2026.08.10, cyWu, 软件 ms 计数交还协议层，本模块仅负责 TIM6 硬件
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* - V1.0.0, 2026.08.10, cyWu, 首次发布
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******************************************************************************/
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#include "jb_timer.h"
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#include "log.h"
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/*============================================================================*/
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/* 私有变量 */
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/*============================================================================*/
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TIM_HandleTypeDef g_jb_tim_handle;
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static uint8_t s_initialized;
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/*============================================================================*/
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/* 公有接口 */
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/*============================================================================*/
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/**
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* @brief 初始化 TIM6 为 1ms 周期中断
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* @return JbTimer_Ret_t
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*/
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JbTimer_Ret_t jb_timer_init(void)
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{
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uint32_t pclk1;
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uint32_t tim_clk;
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if (s_initialized)
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{
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return JB_TIMER_OK;
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}
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/* APB 不分频时 TIMCLK=PCLK1；分频时 TIMCLK=2*PCLK1 */
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pclk1 = HAL_RCC_GetPCLK1Freq();
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if ((RCC->CFGR & RCC_CFGR_PPRE) == RCC_HCLK_DIV1)
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{
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tim_clk = pclk1;
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}
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else
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{
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tim_clk = pclk1 * 2U;
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}
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g_jb_tim_handle.Instance = JB_TIMER;
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g_jb_tim_handle.Init.Prescaler = (tim_clk / 1000000U) - 1U;
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g_jb_tim_handle.Init.CounterMode = TIM_COUNTERMODE_UP;
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g_jb_tim_handle.Init.Period = (1000U * JB_TIMER_PERIOD_MS) - 1U;
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g_jb_tim_handle.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
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g_jb_tim_handle.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
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g_jb_tim_handle.Init.RepetitionCounter = 0;
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if (HAL_TIM_Base_Init(&g_jb_tim_handle) != HAL_OK)
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{
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return JB_TIMER_ERR_HAL;
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}
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if (HAL_TIM_Base_Start_IT(&g_jb_tim_handle) != HAL_OK)
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{
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return JB_TIMER_ERR_HAL;
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}
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s_initialized = 1U;
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appPrintf(LOG_NOTIC, "TIM6 1ms timer started, pclk=%lu tim_clk=%lu\r\n",
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(unsigned long)pclk1, (unsigned long)tim_clk);
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return JB_TIMER_OK;
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}
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/**
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* @brief 获取初始化状态
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* @return JbTimer_Ret_t
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*/
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JbTimer_Ret_t jb_timer_get_status(void)
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{
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if (!s_initialized)
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{
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return JB_TIMER_ERR_NOT_INIT;
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}
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return JB_TIMER_OK;
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}
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