http://gg.eefocus.com/www/delivery/lg.php?bannerid=0&campaignid=0&zoneid=462&loc=http%3A%2F%2Fwww.stmcu.org.cn%2Fmodule%2Fforum%2Fforum.php%3Fmod%3Dviewthread%26tid%3D612644%26page%3D1%23pid2330038&referer=http%3A%2F%2Fwww.stmcu.org.cn%2Fmodule%2Fforum%2Fhome.php%3Fmod%3Dspacecp%26ac%3Dcredit%26showcredit%3D1&cb=fcafa1cef2 以keil里自带的stm32的CPU为例，对PWM波形跟踪观测，打开C:\Keil\ARM\Boards\Keil\MCBSTM32\PWM_2目录下的stm32的Dome，第一步：进行仿真配置，如图： https://www.stmcu.org.cn/module/forum/data/attachment/forum/201803/20/135254wmkcnn0mtzenam4p.jpg 把开工程中的Abstract.txt文件有对工程的描述，PWM从PB0.8和PB0.9输出，稍后将它加入软件逻辑分析仪里。 The 'PWM' project is a simple program for the STM32F103RBT6 using Keil 'MCBSTM32' Evaluation Board and demonstrating the use of PWM (Pulse Width Modulation) with Timer TIM4 . Example functionality: - Clock Settings: - XTAL = 8.00 MHz - SYSCLK = 72.00 MHz - HCLK = SYSCLK = 72.00 MHz - PCLK1 = HCLK/2 = 36.00 MHz - PCLK2 = HCLK = 72.00 MHz - ADCLK = PCLK2/6 = 12.00 MHz - SYSTICK = HCLK/8 = 9.00 MHz - TIM4 is running at 100Hz. LEDs PB8, PB9 are dimmed using the PWM function of TIM4 channel3,channel4 The Timer program is available in different targets: Simulator: - configured for software Simulator MCBSTM32: - runs from Internal Flash located on chip (used for production or target debugging) 第二、选择软件仿真 https://www.stmcu.org.cn/module/forum/data/attachment/forum/201803/20/135332ybsccs7zhqdatqka.jpg 第三、编译程序，如果程序没有错的话，将出现以下线框编译信息，然后进入调试，点出红色的“D"按,如下图所示 https://www.stmcu.org.cn/module/forum/data/attachment/forum/201803/20/135353c3bvu6zblvb3zuzv.jpg第四步、把软件逻辑分析仪把，并把要观察的波形信号拉到逻辑分析仪里，如果进入调试状态下没有"sysbols"标签话，点击“View”菜单弹出来，从“Peripheral Register”里把要观察的(GPIOB_IDR输出的PWM信号会从这个寄存器反映出来)信号拖到逻辑析分析里， https://www.stmcu.org.cn/module/forum/data/attachment/forum/201803/20/135412inidp8njnu8doqdo.jpg 第五步、把不用的bit屏蔽掉，并按bit形式显示，配置如图 https://www.stmcu.org.cn/module/forum/data/attachment/forum/201803/20/135433vsojkbsmsui2oo7m.jpg 第六步，点“GO”按钮进入全速运行，OK，PWM波形出来了，用IN和OUT可以调扫描时间，如下图 https://www.stmcu.org.cn/module/forum/data/attachment/forum/201803/20/135453um9x9qs2qmxeu9rj.jpg
