- Forums
- Product Forums
- General Purpose MicrocontrollersGeneral Purpose Microcontrollers
- i.MX Forumsi.MX Forums
- QorIQ Processing PlatformsQorIQ Processing Platforms
- Identification and SecurityIdentification and Security
- Power ManagementPower Management
- Wireless ConnectivityWireless Connectivity
- RFID / NFCRFID / NFC
- Advanced AnalogAdvanced Analog
- Neural Processing UnitsNeural Processing Units
- MCX Microcontrollers
- S32G
- S32K
- S32V
- MPC5xxx
- Other NXP Products
- S12 / MagniV Microcontrollers
- Powertrain and Electrification Analog Drivers
- Sensors
- Vybrid Processors
- Digital Signal Controllers
- 8-bit Microcontrollers
- ColdFire/68K Microcontrollers and Processors
- PowerQUICC Processors
- OSBDM and TBDML
- S32M
- S32Z/E
-
- Solution Forums
- Software Forums
- MCUXpresso Software and ToolsMCUXpresso Software and Tools
- CodeWarriorCodeWarrior
- MQX Software SolutionsMQX Software Solutions
- Model-Based Design Toolbox (MBDT)Model-Based Design Toolbox (MBDT)
- FreeMASTER
- eIQ Machine Learning Software
- Embedded Software and Tools Clinic
- S32 SDK
- S32 Design Studio
- GUI Guider
- Zephyr Project
- Voice Technology
- Application Software Packs
- Secure Provisioning SDK (SPSDK)
- Processor Expert Software
- Generative AI & LLMs
-
- Topics
- Mobile Robotics - Drones and RoversMobile Robotics - Drones and Rovers
- NXP Training ContentNXP Training Content
- University ProgramsUniversity Programs
- Rapid IoT
- NXP Designs
- SafeAssure-Community
- OSS Security & Maintenance
- Using Our Community
-
- Cloud Lab Forums
-
- Knowledge Bases
- ARM Microcontrollers
- i.MX Processors
- Identification and Security
- Model-Based Design Toolbox (MBDT)
- QorIQ Processing Platforms
- S32 Automotive Processing Platform
- Wireless Connectivity
- CodeWarrior
- MCUXpresso Suite of Software and Tools
- MQX Software Solutions
- RFID / NFC
- Advanced Analog
- Neural Processing Units
-
- NXP Tech Blogs
- Home
- :
- Translated Content
- :
- Multi Source Translation Content
- :
- 2401984_zh-CN
2401984_zh-CN
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Options
- Subscribe to RSS Feed
- Mark as New
- Mark as Read
- Bookmark
- Subscribe
- Printer Friendly Page
- Report Inappropriate Content
2401984_zh-CN
2401984_zh-CN
我现在在开发nxp的s32k144遇到一个问题，我使用eb配置工具，我配置好了FTM0的四个通道输出，并且再代码中调用了PWM_Init();setdutycycle（8129）；我在配置中选择的是中心对齐模式，不启动死区，也不和别的通道绑定，并且周期设置的是0.00125，每个通道都是独立模式，得到的是250us，占空比20%的方波，这显然不对，我希望是25%才对，所以我后面换了一下占空比为setdutycycle（16339），但是这个得到的结果是波形不对，通道变成了由150us周期66占空比的方波和100us周期为50占空比的方波交替出现，请问这是为什么？这是我的实际波形；
事实上可以看出我这里有两个问题：1、为什么我的pwm占空比设置会有偏差；2、为什么我的pwm周期在不断地变化？
Hi
请告诉我你测试的是哪个版本的Real-Time Drivers for S32K1还是之前哪个版本的AUTOSAR MCAL for S32K1 devices?
请注意，MPC5xxx 和 S32K1xx 器件的 MCAL 已停止支持。如需进一步支持，需经市场团队批准，请联系您的恩智浦销售人员寻求帮助。
Best Regards,
Robin
我不清楚你使用的哪个版本软件，但需要注意设置Loading Point，参考以下两个讨论：
Changing FTM_PWM period and duty cycle
S32K116 PWM输出问题
No ratings