static volatile __data uint16_t ao_tick_count;
-uint16_t ao_time(void)
+uint16_t ao_time(void) __critical
{
- volatile bit ea_save;
- __data uint16_t ret;
-
- ea_save = EA;
- ret = ao_tick_count;
- EA = ea_save;
- return ret;
+ return ao_tick_count;
}
void
#define T1_CLOCK_DIVISOR 8 /* 24e6/8 = 3e6 */
#define T1_SAMPLE_TIME 30000 /* 3e6/30000 = 100 */
+volatile __data uint8_t ao_adc_interval = 1;
+volatile __data uint8_t ao_adc_count;
+
void ao_timer_isr(void) interrupt 9
{
++ao_tick_count;
- ao_adc_poll();
+ if (++ao_adc_count >= ao_adc_interval) {
+ ao_adc_count = 0;
+ ao_adc_poll();
+ }
ao_wakeup(DATA_TO_XDATA(&ao_tick_count));
}
+void
+ao_timer_set_adc_interval(uint8_t interval) __critical
+{
+ ao_adc_interval = interval;
+}
+
void
ao_timer_init(void)
{
/* set the sample rate */
T1CC0H = T1_SAMPLE_TIME >> 8;
- T1CC0L = T1_SAMPLE_TIME;
+ T1CC0L = (uint8_t) T1_SAMPLE_TIME;
T1CCTL0 = T1CCTL_MODE_COMPARE;
T1CCTL1 = 0;