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#pragma once
#define PINOUT_DISP_CLK (5)
#define PINOUT_DISP_DIO (6)
#define PINOUT_POT (7)
// GPIO B
#define PINOUT_LED_1 (3)
#define PINOUT_LED_2 (5)
#define PINOUT_LED_3 (4)
#define PINOUT_LED_4 (6)
#define PINOUT_BTN (8)
void shield_config();
void toggle_direction();
void EXTI4_15_IRQHandler(void);
void interrupt_setup();
void led_write(int num, int on);
int button_read();
unsigned int pot_read();
void next_led();
void dumb_delay();
void timer_delay(unsigned short millis);
int main();
typedef enum {
up_idle = 0,
down_edge = 1,
down_idle = 2,
up_edge = 3,
} button_state;
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