Configure_TIM() function

This function configures TIM3 channel 3 to generate a PWM edge aligned signal with a frequency equal to 17.57 KHz and a variable duty cycle that is changed by the DMA after a specific number of update DMA requests. The number of this repetitive requests is defined by the TIM3 repetition counter, each 4 update requests, the TIM3 Channel 3 Duty Cycle changes to the next new value defined by the aCCValue.