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  • The UART emulator is needed in applications that require more UARTs than the ones provided by STM32F4 microcontrollers.

    The STSW-STM32156 firmware provides an emulated full-duplex UART which supports up to 9 data bits and up to115200 baud rates.
    The STSW-STM32156 firmware also offers an example of communications between a hardware and a software UART.
    For more details refer to application note AN4457.

    Key Features

    • Full duplex, asynchronous communications
    • Full duplex mode up to 115200 bps
    • Data length (5 up to 9 bits)
    • Flexible GPIO use: all GPIOs could be configured as UART TX/RX

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Technical Documentation

    • Description Version Size Action
      DB2566
      Implementing an emulated universal asynchronous receiver/transmitter on STM32F4 series
      1.0
      110.73 KB
      PDF
      DB2566

      Implementing an emulated universal asynchronous receiver/transmitter on STM32F4 series

    • Description Version Size Action
      AN4457
      Implementing an emulated UART on STM32F4 microcontrollers
      2.0
      496.49 KB
      PDF
      AN4457

      Implementing an emulated UART on STM32F4 microcontrollers

Presentations & Training Material

    • Description Version Size Action
      STM32 and STM8 embedded software solutions 7.0
      3.12 MB
      PDF

      STM32 and STM8 embedded software solutions

Legal

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      SLA0048
      Mix Ultimate Liberty+OSS+3rd-party V1 - SOFTWARE LICENSE AGREEMENT
      5.5
      87.58 KB
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      SLA0048

      Mix Ultimate Liberty+OSS+3rd-party V1 - SOFTWARE LICENSE AGREEMENT