X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fcpu%2Fcortex-m3%2Fdrv%2Ftimer_cm3.h;h=b81df0bf7ec1e3d9d09e735fff677bf94ab3e1eb;hb=e4f77ad0d0b668029e0400412ea8628bc005a583;hp=6cfaf8cf6fe68d228208bec25b3ee764c12fc176;hpb=476b69eb75e5eca105bb4b3474df19e6cfdbed68;p=bertos.git diff --git a/bertos/cpu/cortex-m3/drv/timer_cm3.h b/bertos/cpu/cortex-m3/drv/timer_cm3.h index 6cfaf8cf..b81df0bf 100644 --- a/bertos/cpu/cortex-m3/drv/timer_cm3.h +++ b/bertos/cpu/cortex-m3/drv/timer_cm3.h @@ -35,11 +35,50 @@ * \brief Low-level timer driver (SysTick) for Cortex-M3. */ -#include +#ifndef TIMER_CM3_H +#define TIMER_CM3_H #if CPU_CM3_LM3S - #include "timer_lm3s.h" + #include +#elif CPU_CM3_STM32 + #include /*#elif Add other families here */ #else #error Unknown CPU #endif + +/* Ticks frequency (HZ) */ +#define TIMER_TICKS_PER_SEC 1000 + +/* Frequency of the hardware high-precision timer. */ +#define TIMER_HW_HPTICKS_PER_SEC (CPU_FREQ) + +/* Maximum value of the high-precision hardware counter register */ +#define TIMER_HW_CNT (CPU_FREQ / TIMER_TICKS_PER_SEC) + +/** Type of time expressed in ticks of the hardware high-precision timer */ +typedef uint32_t hptime_t; +#define SIZEOF_HPTIME_T 4 + +/* Timer ISR prototype */ +ISR_PROTO_CONTEXT_SWITCH(timer_handler); +#define DEFINE_TIMER_ISR DECLARE_ISR_CONTEXT_SWITCH(timer_handler) + +INLINE void timer_hw_irq(void) +{ +} + +INLINE bool timer_hw_triggered(void) +{ + return true; +} + +INLINE hptime_t timer_hw_hpread(void) +{ + return HWREG(NVIC_ST_CURRENT); +} + +void timer_hw_init(void); +void timer_hw_exit(void); + +#endif /* TIMER_CM3_H */