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subdevices
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subdevices [2020/06/09 16:35] ursgraf [PPWA] |
subdevices [2020/06/09 17:24] (current) ursgraf [Watchdog] |
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| | | | | | | | | |rearm|status| | | | | | | | | | |rearm|status| | ||
| - | status: shows the value of the watchdog signal. If '1': the watchdog-timer is still running and the output is set, if '0': the watchdog has timed out and the output is not set. \\ | + | status: shows the value of the watchdog signal. If '1': the watchdog-timer is still running and the signal ''granted'' is set. If '0': the watchdog has timed out and ''granted'' is not set. \\ |
| rearm: When the watchdog has fired (timed out), it has to be reset with this signal. Write '1' to rearm. This bit is self clearing to '0'.\\ | rearm: When the watchdog has fired (timed out), it has to be reset with this signal. Write '1' to rearm. This bit is self clearing to '0'.\\ | ||
| - | counter: before the watchdog gets rearmed, a counter-value has to be set. | + | counter: set the watchdog timeout before you arm the watchdog. |
| === Outputs === | === Outputs === | ||
| + | This subdevice uses two pins on the FPGA device. The two output are as follows | ||
| + | * watchdog_pwm: outputs short pulses each time the counter value is reloaded | ||
| + | * granted: outputs logic '1' as long as the watchdog is active. As soon as a timeout occurs, this signals goes to logic '0'. | ||
| ===== Sensor ===== | ===== Sensor ===== | ||
subdevices.txt · Last modified: 2020/06/09 17:24 by ursgraf
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