void us_ticker_set_interrupt(timestamp_t timestamp) { uint32_t tick_cnt; uint32_t cur_tick_cnt; uint32_t time_def; tick_cnt = (uint32_t)timestamp/TIMER_TICK_US; cur_tick_cnt = 0xffffffff - HalTimerOp.HalTimerReadCount(SYS_TIM_ID); if (tick_cnt > cur_tick_cnt) { time_def = tick_cnt - cur_tick_cnt; } else { time_def = 0xffffffff - cur_tick_cnt + tick_cnt; } TimerAdapter.IrqDis = 0; // Enable Irq TimerAdapter.TimerLoadValueUs = time_def * TIMER_TICK_US; TimerAdapter.TimerMode = USER_DEFINED; // Countdown Free Run HalTimerOp.HalTimerInit((VOID*) &TimerAdapter); }
uint32_t us_ticker_read() { uint32_t tick_cnt; uint64_t us_tick; //1 Our G-timer resolution is ~31 us (1/32K), and is a countdown timer if (!us_ticker_inited) us_ticker_init(); tick_cnt = HalTimerOp.HalTimerReadCount(SYS_TIM_ID); us_tick = TIMER_TICK_US*(0xffffffff - tick_cnt); // TODO: handle overflow return ((uint32_t)us_tick); }
uint32_t us_ticker_read() { uint32_t tick_cnt; uint32_t ticks_125ms; uint32_t ticks_remain; uint64_t us_tick; //1 Our G-timer resolution is ~31 us (1/32K), and is a countdown timer // if (!us_ticker_inited) { // us_ticker_init(); // } tick_cnt = HalTimerOp.HalTimerReadCount(SYS_TIM_ID); tick_cnt = 0xffffffff - tick_cnt; // it's a down counter ticks_125ms = tick_cnt/(GTIMER_CLK_HZ/8); ticks_remain = tick_cnt - (ticks_125ms*(GTIMER_CLK_HZ/8)); us_tick = ticks_125ms * 125000; us_tick += (ticks_remain * 1000000)/GTIMER_CLK_HZ; return ((uint32_t)us_tick); }
uint32_t us_ticker_read() { uint32_t tick_cnt; uint32_t tick_cnt_div_4; uint32_t tick_cnt_mod_4; uint64_t us_tick; //1 Our G-timer resolution is ~31 us (1/32K), and is a countdown timer // if (!us_ticker_inited) { // us_ticker_init(); // } tick_cnt = HalTimerOp.HalTimerReadCount(SYS_TIM_ID); tick_cnt = 0xffffffff - tick_cnt; // it's a down counter tick_cnt_div_4 = tick_cnt >> 2; tick_cnt_mod_4 = tick_cnt - (tick_cnt_div_4 << 2); us_tick = (TIMER_TICK_US_X4*tick_cnt_div_4) + (TIMER_TICK_US*tick_cnt_mod_4); // TODO: handle overflow return ((uint32_t)us_tick); }
void us_ticker_init(void) { if (us_ticker_inited) return; us_ticker_inited = 1; // Initial a G-Timer TimerAdapter.IrqDis = 1; // Disable Irq TimerAdapter.IrqHandle.IrqFun = (IRQ_FUN) _us_ticker_irq_handler; TimerAdapter.IrqHandle.IrqNum = TIMER2_7_IRQ; TimerAdapter.IrqHandle.Priority = 0x20; TimerAdapter.IrqHandle.Data = (u32)NULL; TimerAdapter.TimerId = APP_TIM_ID; TimerAdapter.TimerIrqPriority = 0; TimerAdapter.TimerLoadValueUs = 1; TimerAdapter.TimerMode = FREE_RUN_MODE; // Countdown Free Run HalTimerOp.HalTimerInit((VOID*) &TimerAdapter); DBG_TIMER_INFO("%s: Timer_Id=%d\n", __FUNCTION__, APP_TIM_ID); }
void us_ticker_set_interrupt(timestamp_t timestamp) { uint32_t cur_time_us; uint32_t time_def; cur_time_us = us_ticker_read(); if ((uint32_t)timestamp >= cur_time_us) { time_def = (uint32_t)timestamp - cur_time_us; } else { time_def = 0xffffffff - cur_time_us + (uint32_t)timestamp; } if (time_def < TIMER_TICK_US) { time_def = TIMER_TICK_US; // at least 1 tick } TimerAdapter.IrqDis = 0; // Enable Irq TimerAdapter.TimerLoadValueUs = time_def; TimerAdapter.TimerMode = USER_DEFINED; // Countdown Free Run HalTimerOp.HalTimerInit((VOID*) &TimerAdapter); }
void us_ticker_clear_interrupt(void) { HalTimerOp.HalTimerIrqClear((u32)TimerAdapter.TimerId); }
void us_ticker_disable_interrupt(void) { HalTimerOp.HalTimerDis((u32)TimerAdapter.TimerId); }
uint32_t gtimer_read_tick (gtimer_t *obj) { PTIMER_ADAPTER pTimerAdapter = &obj->hal_gtimer_adp; return (HalTimerOp.HalTimerReadCount(pTimerAdapter->TimerId)); }