I need to do a project where I use the BDMA to transfer arrays from memory to the GPIO. The idea is to send the information in 8 bit parallel at 12.5MHz.
I started with the DMA example from the STM32 (called DMAMUX_RequestGen) to try to understand how the BDMA works.
I started with this array.
In the example, the BDMA is set to transfer two bytes in circular mode using this function
In this case the program runs correctly and I get a signal like this (the idea is to get a square wave):
But when I change the function so it sends 8 values in circular mode,
the signal gets "corrupted" (I was expecting the signal to be like the one in the last capture):
I need this signal to not be "corrupted" with more than 4 elements because I need to send more than 240 bytes in a row.
I tried to see were the problem is but I am not having any luck.
Has anyone got any idea?
