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I have used software control GPIO simulate parallel interface to successfully receive data, but how to faster, I used timer to trigger DMA, but the effect is very bad.About: 1-1.5 FPS
How does STM32 dynamically allocate memory ?
Keil MDK Device DatabaseIf no parameter, it needs to look like thisSo, MDK can not setting "Option for target-debug" correctly 
Version: 1.14.1MCU package: STM32CubeF1 Firmware Package V1.8.0 / 26-June-2019The GPIO Settings of the USART auto configuration are incorrect.
Kudos given to