Example

AN4457

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DocID026046 Rev 1

3

Example

The example provided in STSW-STM32156 illustrates data exchange between the UART

emulator and the hardware UART.

3.1

Hardware requirements

The hardware required to run this example is the following:

•

Two Nucleo boards (NUCLEO-F401RE)

•

Two Mini-USB cables to power the boards and to connect the Nucleo embedded ST-

LINK for debugging and programming.

The connection between the two Nucleo boards through UART lines is described in Figure 9

and Table 4.

Figure 9. UART emulator and UART HW connection

Table 4. UART Emulator and UART hardware connection

Nucleo board A (UART emulator)

Nucleo board B (hardware UART)

UART TX (PC10)

UART RX (PA10)

UART RX (PC11)

UART TX (PA9)

GND

GND