14 rt_inline rt_uint32_t timeout_calc(rt_hwtimer_t *timer, rt_hwtimerval_t *tv)  in timeout_calc()  argument
25     overflow = timer->info->maxcnt/(float)timer->freq;  in timeout_calc()
28     if (tv_sec < (1/(float)timer->freq))  in timeout_calc()
32         timeout = 1/(float)timer->freq;  in timeout_calc()
42                 counter = timeout*timer->freq;  in timeout_calc()
43                 devi = tv_sec - (counter/(float)timer->freq)*i;  in timeout_calc()
64     timer->cycles = i;  in timeout_calc()
65     timer->reload = i;  in timeout_calc()
66     timer->period_sec = timeout;  in timeout_calc()
67     counter = timeout*timer->freq;  in timeout_calc()
75     rt_hwtimer_t *timer;  in rt_hwtimer_init()  local
77     timer = (rt_hwtimer_t *)dev;  in rt_hwtimer_init()
79     if ((1000000 <= timer->info->maxfreq) && (1000000 >= timer->info->minfreq))  in rt_hwtimer_init()
81         timer->freq = 1000000;  in rt_hwtimer_init()
85         timer->freq = timer->info->minfreq;  in rt_hwtimer_init()
87     timer->mode = HWTIMER_MODE_ONESHOT;  in rt_hwtimer_init()
88     timer->cycles = 0;  in rt_hwtimer_init()
89     timer->overflow = 0;  in rt_hwtimer_init()
91     if (timer->ops->init)  in rt_hwtimer_init()
93         timer->ops->init(timer, 1);  in rt_hwtimer_init()
106     rt_hwtimer_t *timer;  in rt_hwtimer_open()  local
108     timer = (rt_hwtimer_t *)dev;  in rt_hwtimer_open()
109     if (timer->ops->control != RT_NULL)  in rt_hwtimer_open()
111         timer->ops->control(timer, HWTIMER_CTRL_FREQ_SET, &timer->freq);  in rt_hwtimer_open()
124     rt_hwtimer_t *timer;  in rt_hwtimer_close()  local
126     timer = (rt_hwtimer_t*)dev;  in rt_hwtimer_close()
127     if (timer->ops->init != RT_NULL)  in rt_hwtimer_close()
129         timer->ops->init(timer, 0);  in rt_hwtimer_close()
144     rt_hwtimer_t *timer;  in rt_hwtimer_read()  local
149     timer = (rt_hwtimer_t *)dev;  in rt_hwtimer_read()
150     if (timer->ops->count_get == RT_NULL)  in rt_hwtimer_read()
153     cnt = timer->ops->count_get(timer);  in rt_hwtimer_read()
154     if (timer->info->cntmode == HWTIMER_CNTMODE_DW)  in rt_hwtimer_read()
156         cnt = (timer->freq * timer->period_sec) - cnt;  in rt_hwtimer_read()
159     t = timer->overflow * timer->period_sec + cnt/(float)timer->freq;  in rt_hwtimer_read()
172     rt_hwtimer_t *timer;  in rt_hwtimer_write()  local
174     timer = (rt_hwtimer_t *)dev;  in rt_hwtimer_write()
175     if ((timer->ops->start == RT_NULL) || (timer->ops->stop == RT_NULL))  in rt_hwtimer_write()
181     timer->ops->stop(timer);  in rt_hwtimer_write()
182     timer->overflow = 0;  in rt_hwtimer_write()
184     t = timeout_calc(timer, (rt_hwtimerval_t*)buffer);  in rt_hwtimer_write()
185     if ((timer->cycles <= 1) && (timer->mode == HWTIMER_MODE_ONESHOT))  in rt_hwtimer_write()
190     if (timer->ops->start(timer, t, opm) != RT_EOK)  in rt_hwtimer_write()
199     rt_hwtimer_t *timer;  in rt_hwtimer_control()  local
201     timer = (rt_hwtimer_t *)dev;  in rt_hwtimer_control()
207         if (timer->ops->stop != RT_NULL)  in rt_hwtimer_control()
209             timer->ops->stop(timer);  in rt_hwtimer_control()
228         if ((*f > timer->info->maxfreq) || (*f < timer->info->minfreq))  in rt_hwtimer_control()
234         if (timer->ops->control != RT_NULL)  in rt_hwtimer_control()
236             result = timer->ops->control(timer, cmd, args);  in rt_hwtimer_control()
239                 timer->freq = *f;  in rt_hwtimer_control()
256         *((struct rt_hwtimer_info*)args) = *timer->info;  in rt_hwtimer_control()
276         timer->mode = *m;  in rt_hwtimer_control()
289 void rt_device_hwtimer_isr(rt_hwtimer_t *timer)  in rt_device_hwtimer_isr()  argument
291     RT_ASSERT(timer != RT_NULL);  in rt_device_hwtimer_isr()
293     timer->overflow ++;  in rt_device_hwtimer_isr()
295     if (timer->cycles != 0)  in rt_device_hwtimer_isr()
297         timer->cycles --;  in rt_device_hwtimer_isr()
300     if (timer->cycles == 0)  in rt_device_hwtimer_isr()
302         timer->cycles = timer->reload;  in rt_device_hwtimer_isr()
304         if (timer->mode == HWTIMER_MODE_ONESHOT)  in rt_device_hwtimer_isr()
306             if (timer->ops->stop != RT_NULL)  in rt_device_hwtimer_isr()
308                 timer->ops->stop(timer);  in rt_device_hwtimer_isr()
312         if (timer->parent.rx_indicate != RT_NULL)  in rt_device_hwtimer_isr()
314             timer->parent.rx_indicate(&timer->parent, sizeof(struct rt_hwtimerval));  in rt_device_hwtimer_isr()
331 rt_err_t rt_device_hwtimer_register(rt_hwtimer_t *timer, const char *name, void *user_data)  in rt_device_hwtimer_register()  argument
335     RT_ASSERT(timer != RT_NULL);  in rt_device_hwtimer_register()
336     RT_ASSERT(timer->ops != RT_NULL);  in rt_device_hwtimer_register()
337     RT_ASSERT(timer->info != RT_NULL);  in rt_device_hwtimer_register()
339     device = &(timer->parent);  in rt_device_hwtimer_register()