USART — Maple v0.0.9 Documentation

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# USART

- Hardware/Circuit Design
- Compatible Devices and Specifications
- Recommended Reading

## Hardware/Circuit Design

The Maple has 3 separate USART devices. In the most simple use case, the RX and TX pins are used to send data at a predetermined baudrate with the line voltage level relative to ground. Their usage is documented in the Serial Ports language reference page.

## Compatible Devices and Specifications

We have successfully used the Maple USART ports with an FT232R-based USB-serial converter at up to 115200 baud; higher speeds should certainly be possible.

## Recommended Reading

- Wikipedia article on Universal asynchronous receiver/transmitter (USART)
- Arduino reference on Serial
- STMicro documentation for STM32F103RB microcontroller:
  - Datasheet (pdf)
  - Reference Manual (pdf)

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