MDK怎么用虚拟示波器查看生成的pwm波形？
本帖最后由 孤鸿踏雪遗梦 于 2016-1-15 23:22 编辑新手，如题。用cubemax设置定时器，产生pwm信号。进入Debug后在Logic Analyze里，怎么添加IO口查看呢？最好有图说明，谢谢。 这个直没用过。。。
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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 at100Hz.
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
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