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Reinitialize the DMA

Hi everyone,

Please, I'm using the examples given with the keil solution to implement a program that uses the DMA between the UART and a buffer, the problem is that I want the DMA to interrupt when the buffer gets full, but then to restart working. The interupt is working once, but then the program stops.
I guess I have a problem in reinicializing the DMA once the interrupt comes.

thank you very much