LED1 PB12 LED2 PB11 LED3 PB1 LED4 PB0
SW1 PB15 SW2 PB14 SW3 PB13 SW4 PC13
The display pins are supposed to all be open-drains. Individual segment is lit up by putting both the digit and segment on. Only one digit at a time is supposed to be lit up, by turning on multiple digits, it's possible.
DIG1 PA6 TIM3 CH1 DIG2 PA3 TIM2 CH4 DIG3 PA7 TIM3 CH2 DIG4 PA8 TIM1 CH1 DIG5 PA9 TIM1 CH2 DIG6 PA2 TIM2 CH3 DIG7 PA10 TIM1 CH3 DIG8 PA1 TIM2 CH2
A PB10 B PB2 C PB8 D PB6 E PB9 F PB3 G PB4 DP PB7