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Data transfer from GPIO port to RAM buffer using DMA upon receiving a trigger signal on the timer capture input channel.

Question asked by patel.vimal.001 on Aug 7, 2013
Latest reply on Nov 16, 2015 by james.Coz
       
  1. Our requirement is to configure the DMA so that it transfers data from the GPIO lines (8 bit data lines) to the RAM buffer upon receiving a trigger signal on the timer capture input channel.
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  3. We had received an example code from ST for the F1 series controllers and the  code is attached. The code works fine with the F1 discovery board. Now we are trying to do the same thing on the F4 board. We have implemented the same configurations for F4 board and tried with F4 discovery board but the DMA data transfer doesn’t happen.The code for F4 is also attached.
       
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  5. The code file is attached. Please note that we have used standard peripheral library functions from ST. Can you please go through our configurations and point out errors? Or send the useful example which can fulfill our requirements.




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