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Ok, so quickly mashing up another example using a different TIM, DMA Stream/Channel for illustration,outputting via GPIOC[0..7] although PC0 is confli... 阅读全文
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Data transfer from GPIO port to RAM buffer using DMA upon receiving a trigger signal on the timer capture input channel.Our requirement is to configur... 阅读全文
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The DMA channels can also work without being triggered by a request from a peripheral.This mode is called Memory to Memory mode.If the MEM2MEM bit in ... 阅读全文
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http://www.efton.sk/STM32/bt.c// Timer-triggered memory-to-memory DMA transfer demonstrator for STM32F4xx (probably good enough for STM32F2xx too)// N... 阅读全文
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/******************************************************************************* 编译环境: EWARM V5.30 硬件环境: DZY2.PCB STM32 FW: V3.0.0 作者 : szlihongtao ... 阅读全文
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参考 ：STM32输入捕获模式设置并用DMA接收数据PWM input modeThis mode is a particular case of input capture mode.The procedure is the same except: Two ICx signals are ma... 阅读全文
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Serial Wire Debug (SWD) provides a debug port for severely pin limited packages,often the case for small package microcontrollers but also complex ASI... 阅读全文
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AN2820 Driving bipolar stepper motors using a medium-density STM32F103xx microcontrollerIntroductionThis application note describes how to achieve com... 阅读全文
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1. RequirementsTo generate a PWM output, we need to create a train of pulses with constant period and variable duty cycle.The dutycycle, being the mod... 阅读全文
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AN2548 --使用 STM32F101xx 和 STM32F103xx 的 DMA 控制器DMA控制器DMA是AMBA的先进高性能总线(AHB)上的设备，它有2个AHB端口：一个是从端口，用于配置DMA，另一个是主端口，使得DMA可以在不同的从设备之间传输数据。DMA的作用是在没有Cortex-... 阅读全文
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Reading string descriptors: String (0x01): "Travis Robinson" String (0x02): "Benchmark Device" String (0x03): "LUSBW1" String (0xEE): "MSF... 阅读全文
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Microsoft OS DescriptorsUpdated: April 11, 2014USB devices store standard descriptors in firmware for the device, and its interfaces and endpoints. In... 阅读全文
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WCID DevicesWhat is WCID?AWCID device, where WCID stands for "WindowsCompatibleID", is an USB device that provides extra information to a Windows syst... 阅读全文
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Special processing on the client is needed when processing TS_URB_OS_FEATURE_DESCRIPTOR_REQUEST.The following describes how to get the OS-specific str... 阅读全文
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How can you add extra hardwareUARTsto a 32bit TMS470ARM7-basedmicrocontrollerat zero cost?Solution: Designers can use the high-end timer (HET) periphe... 阅读全文