December 2010

Doc ID 17860 Rev 1

1/19

AN3265

Application note

Handling hardware and software failures

with the STM8S-DISCOVERY

Application overview

This application is based on the STM8S-DISCOVERY. It demonstrates how to use the

STM8S window watchdog (WWDG) and independent watchdog (IWDG) in conjunction with

the clock security system (CSS) to handle software and hardware failures.

Two external pushbuttons are used to simulate malfunctions while the LEDs monitor the

application progress.

Once the STM8S105C6T6 is powered up through an USB cable connected to the host PC,

LED LD2 starts blinking meaning that the programming operation has completed

successfully.

Reference documents

●

STM8S-DISCOVERY evaluation board user manual (UM0817).

●

“Developing and debugging your STM8S-DISCOVERY application code” user manual

(UM0834).

●

STM8S105xx datasheet

●

STM8S reference manual (RM0016)

www.st.com