SW4STM32C datasheet(34/99 Pages) STMICROELECTRONICS

34 / 99 page

Connecting to the board

AN4989

34/99

DocID030181 Rev 2

Reset: controls the reset operations performed by the target device. The available options

vary with the selected device.

•

Autodetect selects the best suitable reset method for the target device. This can be a

specialized reset or standard method. If Autodetect finds an unknown device, it uses

the SYSRESETREQ method.

•

HW RESET performs a hardware reset by asserting the hardware reset (HW RESET)

signal.

•

SYSRESETREQ performs a software reset by setting the SYSRESETREQ bit. The

Cortex®-M core and on-chip peripherals are reset.

•

VECTRESET performs a software reset by setting the VECTRESET bit. Only the

Cortex®-M core is reset. On-chip peripherals are not reset. For some Cortex®-M

devices, VECTRESET is the only way they may be reset. However, VECTRESET is

not supported on Cortex®-M0, Cortex®-M0+, Cortex®-M1, and ARM®v8-M cores.

Refer to http://www.keil.com/

Hotplug

If all of the following options are disabled, no hardware reset is performed at debugger start:

•

Options For Target - Debug - Load Application at startup

•

Options For Target - Debug - Settings - Reset after connect (with Options For Target -

Debug - Settings - Connect selected as NORMAL)

•

Options For Target - Utilities - Update Target before Debugging

Figure 21. Keil® hotplug step1

SW4STM32C Datasheet(PDF) 34 Page - STMicroelectronics