#ifndef __SYSTICK_H__
#define __SYSTICK_H__

#include <stdint.h>

/**
 * @brief Reload value for the systick timer.
 *
 * This value has to be configured to set the systick to a one milliscond tick interval
 * The default value is 168000, which results in a 1ms tick for 168 MHz CPU speed
 */
#define SYSTICK_RELOAD (168000UL)

/**
 * @brief Variable used by the systick_wait_ms function
 */
extern volatile uint32_t wait_tick_ms;

/**
 * @brief Systemclock in milliseconds.
 *
 * This value must not be reset during the whole runtime.
 *
 */
extern volatile uint64_t global_tick_ms;

/**
 * @brief Setup the Systick timer to generate a 1 ms tick
 */
void systick_setup(void);

/**
 * @brief Wait for x milliseconds
 *
 * This function is not reentrant and must not be called from an interrupt
 *
 * @warning Do not use in interrupt context
 * @param ms wait time in ms
 */
void systick_wait_ms(uint32_t ms);


#endif /* __SYSTICK_H__ */