Abstract: A method for handling watchdog events of an electronic device includes detecting a watchdog fault in a normal mode, which is a watchdog event in which a watchdog trigger is not correctly serviced; entering from the normal mode into a first escalation level of nx escalation levels upon detection of the watchdog fault, wherein nx is an integer equal to or greater than 1; detecting correct watchdog events, which are watchdog events in which a watchdog trigger is correctly serviced; and concurrently detecting watchdog faults, leaving the first escalation level if a first escalation condition is met. An electronic device embodiment includes a CPU and program instructions for carrying out the method.

Abstract: A method for handling watchdog events of an electronic device includes detecting a watchdog fault in a normal mode, which is a watchdog event in which a watchdog trigger is not correctly serviced; entering from the normal mode into a first escalation level of nx escalation levels upon detection of the watchdog fault, wherein nx is an integer equal to or greater than 1; detecting correct watchdog events, which are watchdog events in which a watchdog trigger is correctly serviced; and concurrently detecting watchdog faults, leaving the first escalation level if a first escalation condition is met, and recovering in a recovering step back from any of the nx escalation levels to a previous level or mode, if a de-escalation condition is met. An electronic device embodiment includes a CPU and program instructions for carrying out the method.

Abstract: A switch state detector for use in a system wherein a plurality of n switches (S1, . . . , Sn) produces on a single line (22) a number of discrete voltage levels each representative of one particular state of open and closed switches. The switch state detector comprises a plurality of reference voltage sources each of which corresponds to one of the discrete voltage levels and a set of comparators (C1, . . . , Cm-1) each having a first input connected to the single line (22) and a second input connected to one of the reference voltage sources. The switch state detector further comprises a decoder (24) with inputs receiving the outputs from the comparators (C1, . . . , Cm-1) and with outputs (28) providing a digital representation of the particular state of each of the switches (S1, . . . , Sn). There is further provided an encoder comprising a plurality of n switches (S1, . . .

Abstract: A method for handling watchdog events of an electronic device includes detecting a watchdog fault in a normal mode, which is a watchdog event in which a watchdog trigger is not correctly serviced; entering from the normal mode into a first escalation level of nx escalation levels upon detection of the watchdog fault, wherein nx is an integer equal to or greater than 1; detecting correct watchdog events, which are watchdog events in which a watchdog trigger is correctly serviced; and concurrently detecting watchdog faults, leaving the first escalation level if a first escalation condition is met, and recovering in a recovering step back from any of the nx escalation levels to a previous level or mode, if a de-escalation condition is met. An electronic device embodiment includes a CPU and program instructions for carrying out the method.