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STM32F103R4 APB2 interfaces not working

Question asked by puri.salil on Sep 30, 2013
Latest reply on Sep 30, 2013 by Clive One

My name is Salil and i am a product design engineer with EZ metrology.
We are currently using STM32F103R4 in one of our developing products. This product uses only one USART interface (that works) and simple GPIO interfaces for turining ON and OFF devices.
For some reason all interfaces on the APB2 Bus (including GPIOs) do not work. whereas USART 2 on APB1 bus works fine ( all APB1 bus peripherals work fine)

What could be the possible reason for this?
Please let me know if more information is needed