AN4080 datasheet(22/35 Pages) STMICROELECTRONICS

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Debug management

AN4080

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DocID023035 Rev 4

Debug management

4.1

Introduction

The host/target interface is the hardware equipment that connects the host to the application

board. This interface is made of three components: a hardware debug tool, an SWD

connector and a cable connecting the host to the debug tool.

Figure 8 shows the connection of the host to the evaluation board (STM320518_EVAL).

The STM320518_EVAL evaluation board embeds the debug tools (ST-LINK).

Consequently, it can be directly connected to the PC through a USB cable.

Figure 8. Host-to-board connection

4.2

SWD port (serial wire debug)

The STM32F0xx core integrates the serial wire debug port (SW-DP). It is an ARM® standard

CoreSight™ debug port with a 2-pin (clock + data) interface to the debug access port.

4.3

Pinout and debug port pins

The STM32F0xx MCU is offered in various packages with varying numbers of available

pins.

4.3.1

Serial wire debug (SWD) pin assignment

The same SWD pin assignment is available on all STM32F0xx packages.

Table 4. SWD port pins

SWD pin name

SWD port

Pin assignment

Type

Debug assignment

SWDIO

I/O

Serial wire data input/output

PA13

SWCLK

Serial wire clock

PA14

AN4080 Datasheet(PDF) 22 Page - STMicroelectronics