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[STM32 + Arduino] Serial Link
CommunicationintermediateArduino Uno

[STM32 + Arduino] Serial Link

Cross-board UART: the STM32 Blue Pill sends a "PING n" message over USART1 (PA9 TX) into the Arduino Uno RX (pin 0). The Uno reads each line and blinks LED 13 + echoes "[Uno] got: ..." to its own Serial Monitor. Watch both monitors.

What you'll simulate

  • ✓Real Arduino Uno emulation — cycle-accurate, no hardware needed
  • ✓Interactive simulation canvas
  • ✓Serial Monitor included — see output in real time
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