Device doesn't boot - Githubissues

IRNAS / pulseox-hardware

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Device doesn't boot #20

Open LukaBanovic opened 6 years ago

LukaBanovic commented 6 years ago

With the new MCU when the device is powered on via ON/OFF switch, the MCU doesn't boot. It boots after a reset (e.g. when there is a short circuit made between 3V3 and GND pins on display header, for a short moment). If the short circuit is removed, the device then keeps working normally. Firmware flashing works fine.

VojislavM commented 6 years ago

remove the C2 on the new version V2.1 and then try

LukaBanovic commented 6 years ago

Problem solved by adding 100kOhm resistor between MCU BOOT_0 and GND.