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STM32F0 UART with DMA transmit max. 4 bytes

Question asked by zirngibl.peter on Mar 2, 2015
Latest reply on Jul 6, 2015 by Clive One
I've test the STM32F072 for using it in a new project. The configuration and libbrary are used from the CubeMX with the Keil compiler.
Now I can maximum transmit 4 bytes over the UART with one DMA transfer.
main.c attached

STM32CubeMX 4.6.0
STM32CubeF0 Firmware Package 1.2.1
Keil MDK

Best Regards