UART emulator description

AN4457

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DocID026046 Rev 1

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UART emulator description

The principle consists in emulating the UART protocol via GPIO, EXTI, timer and DMA

peripherals.

1.1

Main features

The main features of the UART emulator are the following:

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Full-duplex asynchronous communications up to 115200 bps

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Programmable data word length: from 5 to 9 bits

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Flexible GPIO usage: all GPIOs can be configured as UART_TX/RX

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Configurable number of stop bits: 1 or 2 stop bits

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Parity control

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Transmission of parity bit

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Parity check of received data frame

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Transfer detection flags

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Receive complete

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Transmit complete

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Error detection flags

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Frame error

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Parity error