50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
/*
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blink Task
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*/
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/* Includes ----------------------------------------------------------------- */
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#include "task/user_task.h"
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/* USER INCLUDE BEGIN */
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#include "bsp/pwm.h"
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#include <math.h>
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/* USER INCLUDE END */
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/* Private typedef ---------------------------------------------------------- */
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/* Private define ----------------------------------------------------------- */
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/* Private macro ------------------------------------------------------------ */
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/* Private variables -------------------------------------------------------- */
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/* USER STRUCT BEGIN */
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/* USER STRUCT END */
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/* Private function --------------------------------------------------------- */
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/* Exported functions ------------------------------------------------------- */
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void Task_blink(void *argument) {
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(void)argument; /* 未使用argument，消除警告 */
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/* 计算任务运行到指定频率需要等待的tick数 */
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const uint32_t delay_tick = osKernelGetTickFreq() / BLINK_FREQ;
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osDelay(BLINK_INIT_DELAY); /* 延时一段时间再开启任务 */
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uint32_t tick = osKernelGetTickCount(); /* 控制任务运行频率的计时 */
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/* USER CODE INIT BEGIN */
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BSP_PWM_Stop(BSP_PWM_LED_R);
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BSP_PWM_Stop(BSP_PWM_LED_B);
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BSP_PWM_SetComp(BSP_PWM_LED_G, 0.0f);
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BSP_PWM_Start(BSP_PWM_LED_G);
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/* USER CODE INIT END */
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while (1) {
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tick += delay_tick; /* 计算下一个唤醒时刻 */
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/* USER CODE BEGIN */
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// 呼吸灯 - 基于tick的正弦波
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float duty = (sinf(tick * 0.003f) + 1.0f) * 0.5f; // 0到1之间的正弦波，加快频率
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BSP_PWM_SetComp(BSP_PWM_LED_G, duty);
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/* USER CODE END */
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osDelayUntil(tick); /* 运行结束，等待下一次唤醒 */
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}
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} |