User manual

Wunderbar v2 23-10-17
1. Long press (over 5 seconds): this will clear onboarding data from Wun-
derbar. Once this button is pressed for 5 seconds User led will start
blinking rapidly and onboarding data will be cleared when button is
released. This is required if Wunderbar configuration (WiFi or Conrad
Connect credentials) needs to be changed.
Warning!
It is not recommended to clear onboarding data at the end of
onboarding process, while Wunderbar is storing data, as it might
lead to data corruption and/or render Wunderbar nonfunctional.
2. Short press (under 5 seconds): if Wunderbar is onboarded this will
send a message to Conrad Connect Cloud with a counter of button
presses. Otherwise, short press on User button has no effect.
5.3 Button combination
Wunderbar has a special firmware upgrade mode, where it is possible to
change Wunderbar’s firmware. To enter this mode (called DFU mode):
• press and hold User button
• press and release Reset button
• release User button
Warning!
Wunderbar operation mode can be changed at any time, though it is
not recommended to switch mode at the end of onboarding process and
not to press both buttons longer than 5 seconds to avoid data and/or
hardware corruption.
5.4 User led
User led is the main feedback mechanism for Wunderbar. It has following
indications:
• Slow blinking (every 0.45 second) indicates that Wunderbar is con-
necting to WiFi.
• Normal blinking (every 0.3 second) indicates that Wunderbar is not
onboarded and awaits connection over serial port.
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