ARTERY AT-START-F407, User Manual

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AT-START-F407 User Manual
2020.11.20 10 Rev 1.20
3.3 Programming and debugging
3.3.1 Embedded AT-Link-EZ
The evaluation board embeds Artery AT-Link-EZ programming and debugging tool for users to
program/debug the AT32F407VGT7 on the AT-START-F407 board. AT-Link-EZ supports SWD
interface mode and supports a set of virtual COM ports (VCP) to connect to the
USART1_TX/USART1_RX (PA9/PA10) of AT32F407VGT7. In this case, PA9 and PA10 of
AT32F407VGT7 will be affected by AT-Link-EZ as follows:

PA9 is weakly pulled up to high level by the VCP RX pin of AT-Link-EZ;

PA10 is strongly pulled up to high level by the VCP TX pin of AT-Link-EZ
Note: The user can set R9 and R10 OFF, then the use of PA9 and PA10 of AT32F407VGT7 is not subject
to the above restrictions.
Please refer to AT-Link User Manual for complete details on the operations, firmware upgrade and
precautions of AT-Link-EZ.
The AT-Link-EZ PCB on the evaluation board can be separated from AT-START-F407 by bending
over along the joint. In this case, AT-START-F407 can still be connected to the CN7 of AT-Link-EZ
through CN2 (not mounted before shipping), or can be connected with another AT-Link to continue
the programming and debugging on the AT32F407VGT7.
3.3.2 20-pin ARM
®
standard JTAG connector
AT-START-F407 also reserves JTAG or SWD general-purpose connectors as
programming/debugging tools. If the user wants to use this interface to program and debug the
AT32F407VGT7, please separate the AT-Link-EZ from this board or set R41, R44 and R46 OFF,
and connect the CN3 (not mounted before shipping) to the programming and debugging tool.
It is recommended to use AT-Link series development tools to experience the best debugging
environment despite Artery MCUs compatible with most of the 3
rd
party development tools.