HardFault if USART2 RX is left floating on 5035 (RS232 converter chip detached via 0-ohm res)

earthlcd / ezLCD-5x

Public Repository for ezLCD-5035-RT release files system, firmware and issue reporting

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Open microlan opened 1 year ago

microlan commented 1 year ago

Describe the bug Removing RS232 resistors on 5035 causes hardfault if nothing is connected to TTL USART2 pins.

Environment Remove R24

POTENTIAL FIX: Enable PullUp or PullDn on USART2/RX