diff options
Diffstat (limited to 'src/ao_timer.c')
| -rw-r--r-- | src/ao_timer.c | 111 | 
1 files changed, 0 insertions, 111 deletions
diff --git a/src/ao_timer.c b/src/ao_timer.c deleted file mode 100644 index c977fbc8..00000000 --- a/src/ao_timer.c +++ /dev/null @@ -1,111 +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; -} - -static __xdata uint8_t ao_forever; - -void -ao_delay(uint16_t ticks) -{ -	ao_alarm(ticks); -	ao_sleep(&ao_forever); -} - -#define T1_CLOCK_DIVISOR	8	/* 24e6/8 = 3e6 */ -#define T1_SAMPLE_TIME		30000	/* 3e6/30000 = 100 */ - -#if HAS_ADC -volatile __data uint8_t	ao_adc_interval = 1; -volatile __data uint8_t	ao_adc_count; -#endif - -void ao_timer_isr(void) __interrupt 9 -{ -	++ao_tick_count; -#if HAS_ADC -	if (++ao_adc_count == ao_adc_interval) { -		ao_adc_count = 0; -		ao_adc_poll(); -	} -#endif -} - -#if HAS_ADC -void -ao_timer_set_adc_interval(uint8_t interval) __critical -{ -	ao_adc_interval = interval; -	ao_adc_count = 0; -} -#endif - -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; -} - -/* - * AltOS always cranks the clock to the max frequency - */ -void -ao_clock_init(void) -{ -	/* Switch system clock to crystal oscilator */ -	CLKCON = (CLKCON & ~CLKCON_OSC_MASK) | (CLKCON_OSC_XTAL); - -	while (!(SLEEP & SLEEP_XOSC_STB)) -		; - -	/* Crank up the timer tick and system clock speed */ -	CLKCON = ((CLKCON & ~(CLKCON_TICKSPD_MASK | CLKCON_CLKSPD_MASK)) | -		  (CLKCON_TICKSPD_1 | CLKCON_CLKSPD_1)); - -	while ((CLKCON & (CLKCON_TICKSPD_MASK|CLKCON_CLKSPD_MASK)) != -	       (CLKCON_TICKSPD_1 | CLKCON_CLKSPD_1)) -		; -}  | 
