diff options
Diffstat (limited to 'ao_timer.c')
-rw-r--r-- | ao_timer.c | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/ao_timer.c b/ao_timer.c deleted file mode 100644 index a6a7646f..00000000 --- a/ao_timer.c +++ /dev/null @@ -1,86 +0,0 @@ -/* - * Copyright © 2009 Keith Packard <keithp@keithp.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - */ - -#include "ao.h" - -static volatile __data uint16_t ao_tick_count; - -uint16_t ao_time(void) __critical -{ - return ao_tick_count; -} - -void -ao_delay(uint16_t ticks) -{ - uint16_t until = ao_time() + ticks; - - while ((int16_t) (until - ao_time()) > 0) - ao_sleep(DATA_TO_XDATA(&ao_tick_count)); -} - -#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; - 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; - ao_adc_count = 0; -} - -void -ao_timer_init(void) -{ - /* NOTE: This uses a timer only present on cc1111 architecture. */ - - /* disable timer 1 */ - T1CTL = 0; - - /* set the sample rate */ - T1CC0H = T1_SAMPLE_TIME >> 8; - T1CC0L = (uint8_t) T1_SAMPLE_TIME; - - T1CCTL0 = T1CCTL_MODE_COMPARE; - T1CCTL1 = 0; - T1CCTL2 = 0; - - /* clear timer value */ - T1CNTL = 0; - - /* enable overflow interrupt */ - OVFIM = 1; - /* enable timer 1 interrupt */ - T1IE = 1; - - /* enable timer 1 in module mode, dividing by 8 */ - T1CTL = T1CTL_MODE_MODULO | T1CTL_DIV_8; -} - |