arch.h

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#ifndef _ARCH_H_
#define _ARCH_H_

/* Tick system is LSE/4 = 8,192 kHz */
#define TICK_FREQ          8192 // Hz

/* CPU Low-Power wakeup and sleep latency */
#define HAL_CPU_LP_WAKEUP_LATENCY   24 // in ticks (~3 ms)
#define HAL_CPU_LP_SLEEP_LATENCY    24 // in ticks (~3 ms)

/* GPIO mapping */
typedef enum {
    GPIO_PORT_A = 0,
    GPIO_PORT_B = 1,
    GPIO_PORT_C = 2,
    GPIO_PORT_D = 3,
    GPIO_PORT_E = 4,
    GPIO_PORT_H = 7,
} gpio_port_t;

/* List of available USART ports */
typedef enum {
    USART_PORT_1,
    USART_PORT_2,
    USART_PORT_4,
    USART_PORT_5,
    LPUART_PORT_1,
} usart_port_t;

/* List of available I2C ports */
typedef enum {
    I2C_PORT_1,
    I2C_PORT_2,
} i2c_port_t;

#endif /* _ARCH_H_ */