Eval
Schematics

Wiki¶

(Polnisch fuer Ausfall, Stoerung)

Reboot tests for nodes in order to

• Test RTC persistence (Does RTC battery still work)
• Test bootup issues (delay for flash chips) (CANDIS SPI Flash issues)
• Test battery livetime (How long does miniminutnik run on one charged battery)

Parts¶

• PI5C3257QE; 4xSPDT; 1 Schalter; 0.229€; 2 of them.
• N+P-MOSFET for power switching
• Button for device switching
• Orange-LED: Target is on; Violet LED: Target is off (Awira is connected); Orange-Blinking: Test running; Violett-Blinking: Test running; Alternating: Target powered only
• Red-Blinking: Test failed; Red-On: Test succeeded
• 3V output e.g. for Miniminutnik reboot tests
• 5V Input when CAN (-connector) is not available
• Transceiver, STM32F072, voltage regulator

Behaviour¶

Awaria has Debug+CANBus 'input' which can be disconnected by electrical switches
To the own debug output either target device or awarias UART is routed.
A running test is interrupted

Open points¶

• Measure current? I don't have a 'nice' device which does such thing yet. Here an additional UART would make sense to access Awaria while target is running. But power and routing is seperated.