DCC_STM32 Arduino Motor Shield v3 ENABLE A = D03 = PE13 ENABLE B = D11 = PA7 DIR A = D12 = PA6 = TIM3_CH1, TIM13_CH1 DIR B = D13 = PA5 = TIM2_CH1, TIM8_CH1N SENSE A = A0 = PA3 = ADC123_IN3 SENSE B = A1 = PC0 = ADC123_IN10