Page 346 - ARM Based Microcontroller Projects Using MBED

332 13. UART PROJECTS

FIG. 13.8 Typical display from the Receiver Node.

13.4 SUMMARY

In this chapter we have learned about the following:
• UART
• Nucleo-F411RE development board UART modules
• Mbed UART functions
• A project where two Nucleo-F411RE development boards are connected together through
one of their UART ports and they communicate with each other.

13.5 EXERCISES

1. What does the acronym UART stand for?
2. Explain the minimum signals that can be used when two devices want to communicate
using UARTs.
3. What is the baud rate? What are the typical baud rates?
4. Two Nucleo-F411RE development boards are to be connected via the UART interface.
Write a program to show how the data sent by one device can be received and displayed on
the PC screen by the other device.
5. What are USBTX and USBRX?
6. Explain how sensor data can be received by a Nucleo-F411RE development board and then
displayed on the PC screen. Give an example project with the code.