WB32F10x Standard Peripherals Firmware Library

TIM TIM1 PWMOutput example

      *************** (C) COPYRIGHT 2020 - 2023 Westberry Technology ***************
      * @file    TIM/TIM_TIM1_PWMOutput/readme.txt
      * @author  Westberry Application Team
      * @version V0.1.10
      * @date    05-January-2023
      * @brief   Description of the TIM_TIM1_PWMOutput example.
      ******************************************************************************
      * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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      * TIME. AS A RESULT, WESTBERRY SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
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例程描述

本例程演示了如何配置TIM外设生成PWM（脉冲调制）
系统时钟工作在96Mhz，通过PLL配置产生。PLL时钟源是外部8Mhz晶振。APB1的分频比是1，APB2的分频比是1。
将TIM1CLK频率设置为SystemCoreClock，以获得96MHz下的TIM1计数器时钟，预分频器计算如下：

- Prescaler = (TIM1CLK / TIM1 counter clock) - 1
  TIM1 Frequency = TIM1 counter clock / (ARR + 1)
  = 96MHz / 65536 = 1.46KHz
  TIM1->CCR1寄存器值等于0x7FFF，因此TIM1通道1生成频率等于1.46KHz、占空比等于50的PWM信号：
  TIM1 Channel1占空比=（TIM1_CCR1 / TIM1_ARR + 1）* 100 = 50%
  可以使用示波器显示脉宽调制波形。

目录内容

- TIM/TIM_TIM1_PWMOutput/TIM_TIM1_PWMOutput.uvprojx MDK5工程文件
- TIM/TIM_TIM1_PWMOutput/TIM_TIM1_PWMOutput.uvoptx MDK5工程配置文件
- TIM/TIM_TIM1_PWMOutput/JLinkSettings.ini Jlink配置文件
- TIM/TIM_TIM1_PWMOutput/main.c 主程序

硬件和软件环境

- 硬件平台搭建
  - HSE 连接外部8MHz晶振
  - 将TIM1引脚连接到示波器上，以监测波形:
    - TIM1_CH1 pin (PA.08)

如何使用？

为了使程序工作，您必须执行以下操作 :

- 使用 MDK5 打开此例程文件夹中的 TIM_TIM1_PWMOutput.uvprojx 工程
- 重新编译该工程并下载到目标存储器中

- 运行此例程

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  © COPYRIGHT 2020 - 2023 Westberry Technology