Hi, The problem I am facing is quite weird but seems real. When I connect STM32F429ZI to a radio we developed around CC1310 from TI via UART, I noticed that after flashing new firmware into STM32F429ZI or a cold start, I have to reset CC1310 to get UART communication between those two, specifically…

The problem was tracked down to glitch on UART RX line on CC1310. When STM32Fxxx with Mbed resets. I assume RX line is briefly pulled down therefore CC1310 thinks some data is going to be transmitted, while there is no actual data. Such glitch was not properly handled by either CC1310 hardware, driv…

What could go wrong when connecting UARTto MCUs from other vendors and running differentstack?

Mbed OS

JohnnyK (Jan Kamidra) February 11, 2022, 7:08am 3

Hello,

Can’t it be related to this? STM32 : full GPIO reset during mbed init.

BR, Jan

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What could go wrong when connecting UARTto MCUs from other vendors and running differentstack?

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