NRF52840 ItsyBitsy Software Communication Protocols

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Software UART

This is a software, bit-banging, non-blocking API driven by the onboard timer peripheral on the nrf52840 device.

Requirements

• UART RX [USB to UART or any other device]
• NRF52840 based development board
• Wire
• PlatformIO IDE

Instructions

1. Open the project in PlatformIO IDE. Let IDE update dependencies.
2. Build and upload project.
3. Connect UART RX [host] to SW UART TX [default: pin 7u].
4. Listen to UART at 9600 baud, 8N1 configuration.

Output

  ItsyBitsy SW UART!
  ItsyBitsy SW UART!
  ItsyBitsy SW UART!
  ItsyBitsy SW UART!
  ItsyBitsy SW UART!
  ItsyBitsy SW UART!
  ItsyBitsy SW UART!

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